Wilderness First Response Flashcards
What is the primary role of a Wilderness First Responder (WFR)?
To provide emergency medical care in remote settings.
True or False: A Wilderness First Responder is trained to perform advanced medical procedures.
False.
What does the acronym WFR stand for?
Wilderness First Responder.
Fill in the blank: A WFR is trained to assess _____ in a wilderness setting.
medical emergencies.
What is the first step in the WFR patient assessment process?
Scene safety.
True or False: WFRs can only operate in groups.
False.
What should you do if a mountain biker is unconscious?
Check for responsiveness and call for help.
What is the most common injury in mountain biking?
Fractures.
Multiple choice: What is the best way to manage a bleeding wound?
Apply direct pressure.
What is the recommended position for a patient who is in shock?
Lay them flat and elevate their legs.
True or False: Mountain biking injuries require immediate evacuation regardless of severity.
False.
What is the primary concern when treating a head injury?
Monitoring for signs of concussion or increased intracranial pressure.
Fill in the blank: A WFR should always have a _____ kit while biking.
first aid.
What is a common sign of a fracture?
Swelling and deformity.
Multiple choice: Which of the following is NOT a sign of hypothermia?
Increased heart rate.
What is the priority of care for a patient with a suspected spinal injury?
Stabilization of the spine.
True or False: You should remove a helmet from an injured mountain biker immediately.
False.
What does the acronym SAMPLE stand for in patient history taking?
Signs, Allergies, Medications, Past medical history, Last oral intake, Events leading up to injury.
What is the recommended treatment for heat exhaustion?
Move the person to a cooler place and provide fluids.
Fill in the blank: Always perform a _____ check before assisting an injured person.
scene safety.
What is the first aid response for a sprained ankle?
Rest, Ice, Compression, Elevation (RICE).
True or False: A WFR can administer medications.
True, within their training limits.
What is the best way to prevent mountain biking injuries?
Wearing proper gear and following safety guidelines.
Multiple choice: Which of the following is a symptom of a concussion?
Confusion.
What is the purpose of a triage system?
To prioritize patients based on the severity of their condition.
Fill in the blank: In a wilderness setting, _____ is crucial for effective communication.
signaling.
What should you do if you suspect a spinal injury?
Keep the person still and avoid movement.
True or False: Mountain biking injuries are always life-threatening.
False.
What does the term ‘evacuation’ refer to in wilderness first response?
Transporting an injured person to a location where they can receive advanced medical care.
What is a common method for treating a burn?
Cool the burn with running water.
Multiple choice: What is the best way to carry a patient in a remote area?
Use a stretcher or improvised carrying device.
What should you assess first in a patient with multiple injuries?
Airway, Breathing, Circulation (ABC).
Fill in the blank: Always have a _____ with you when mountain biking.
buddy.
What is the primary goal of wilderness first aid?
To stabilize the patient until professional help arrives.
True or False: A WFR can perform CPR.
True.
What is the importance of hydration during mountain biking?
To prevent dehydration and heat-related illnesses.
What should you do if a patient is bleeding heavily?
Apply direct pressure and elevate the injury if possible.
Multiple choice: Which of the following is a sign of dehydration?
Dark urine.
What is the best way to treat a dislocated joint?
Immobilize the joint and seek medical help.
Fill in the blank: Always assess _____ before providing care.
the environment.
What is a critical factor in managing an emergency in the wilderness?
Effective communication.
True or False: You should encourage a person with a suspected fracture to move the injured limb.
False.
What is the typical duration of a WFR course?
Approximately 70-80 hours.
What should be included in a basic first aid kit for mountain biking?
Bandages, antiseptic wipes, and a splint.
Multiple choice: What is the most effective way to prevent hypothermia?
Dress in layers.
What is the recommended response for a person experiencing an asthma attack?
Help them use their inhaler and find a calm position.
Fill in the blank: A WFR must be able to _____ their own limitations.
recognize.
What is the purpose of a safety plan in mountain biking?
To outline procedures for emergencies.
True or False: You need special certification to be a WFR.
True.
What is the first step in treating a snake bite?
Keep the patient calm and immobilize the affected limb.
Multiple choice: Which of the following is a common sign of a heart attack?
Chest pain.
What should you do if a mountain biker is having a seizure?
Clear the area and protect their head.
Fill in the blank: Always have a _____ plan when biking in remote areas.
rescue.
What is the best way to treat a sprained wrist?
Rest, Ice, Compression, Elevation (RICE).
True or False: You should give food or drink to an unconscious patient.
False.
What is a key component of wilderness first aid training?
Scenario-based practice.
Multiple choice: Which of the following is NOT a sign of stroke?
Rapid breathing.
What is the primary concern for a patient with a broken leg?
Pain management and stabilization.
Fill in the blank: A WFR should always carry a _____ for communication.
whistle.
What should you assess in a patient with a suspected concussion?
Cognitive function and balance.
True or False: A WFR can provide emotional support to patients.
True.
What is the best method for treating a minor cut?
Clean the wound and apply a sterile bandage.
Multiple choice: Which of the following is a risk factor for mountain biking injuries?
Inexperience.
What should you do if a patient is allergic to a medication?
Avoid administering that medication and seek alternatives.
Fill in the blank: It is important to _____ your first aid kit regularly.
check.
What is the role of a spotter in mountain biking?
To assist and ensure safety while riding difficult terrain.
True or False: You should always use a helmet while mountain biking.
True.
What is the first action to take if someone is choking?
Encourage them to cough if they can.
Multiple choice: What is the best way to treat a bee sting?
Remove the stinger and apply a cold pack.
What should you do if you encounter a wild animal while biking?
Stay calm and slowly back away.
Fill in the blank: Always inform someone about your _____ before going mountain biking.
route.
What is one of the main goals of wilderness first aid?
To preserve life.
True or False: It’s acceptable to move an injured person without assessing the situation.
False.
What is a common sign of a broken bone?
Inability to move the affected area.
Multiple choice: Which of the following is the best way to treat frostbite?
Gradually rewarm the affected area.
What should you do if a patient is experiencing severe anxiety?
Provide reassurance and help them focus on their breathing.
Fill in the blank: Maintaining _____ is crucial for a WFR.
skills.
What is the primary focus during a wilderness rescue?
Safety of the rescuer and the patient.
True or False: A WFR can work independently in the wilderness.
True, but should follow protocols.
What should be included in a rescue plan?
Evacuation routes and communication methods.
Multiple choice: What is a common treatment for a sprained ankle?
RICE method.
What should you do if you encounter a medical emergency while biking?
Assess the scene and provide care as needed.
What is the most important topic in sports outdoor medicine?
The management of someone injured
What are the four effective survey techniques used in initial assessment?
- Scene survey
- Primary survey
- Secondary survey
- Ongoing survey
What is the first survey technique when assessing an injured patient?
Scene survey
What should you ensure before entering a scene to assess a victim?
The scene is safe
What is the primary purpose of the primary survey?
To keep the victim alive
What acronym is used to prioritize treatment during the primary survey?
MARCH
What does the ‘M’ in the MARCH acronym stand for?
Massive hemorrhage
What does the ‘A’ in the MARCH acronym represent?
Airway (with C-spine precautions)
What is the third priority in the MARCH acronym?
Respiration
What should be prioritized even before managing the airway?
Preventing major hemorrhage
What steps should be taken to stop heavy bleeding?
Direct pressure or a tourniquet
What should you assume if a victim is unresponsive?
There is a C-spine injury
What precaution should be taken for Airway during the primary assessment?
Hold the C-spine
What should you check for after assessing the airway?
Respiration
What falls under Circulation when using the MARCH acronym?
Checking the pulse
What action should be taken if the victim is not breathing or has no pulse?
Initiate CPR
Fill in the blank: The second survey technique is the _______.
Primary survey
True or False: The scene survey should take a long time to complete.
False
What is the primary focus of Hypothermia/Hyperthermia management?
Ensure the patient is warm and dry and assess the need for evacuation (Hike vs. Helicopter)
This highlights the importance of environmental factors in patient care.
What does MARCH stand for in the primary survey?
MARCH prioritization ensures patient stability
MARCH is a mnemonic used in trauma assessment.
What does the acronym SAMPLE represent in the secondary survey?
- Symptoms/Sübjective
- Allergies
- Medications
- Prior medical history
- Last oral intake
- Events leading up to illness/injury
SAMPLE helps gather comprehensive patient history.
What should you do if a patient cannot answer questions during the secondary survey?
Ask family, friends, or bystanders for information
This approach ensures critical information is obtained.
What is the purpose of the ongoing survey?
Repeat the assessment as often as needed, especially if the patient is unstable
Continuous monitoring is vital until medical help arrives.
What does the acronym AVPU stand for in the ongoing survey?
- Alert
- Verbal
- Pain
- Unresponsive
AVPU is used to assess a patient’s responsiveness.
When should you move a patient to a safer location?
If the scene is not safe for the victim
Ensuring safety is paramount, but careful consideration of potential spinal injuries is necessary.
What is the risk-to-benefit ratio in scene safety?
Weighing the risks of moving the victim against the dangers of staying in the current location
This assessment is crucial in emergency situations.
What is the blood sweep?
A quick assessment to identify major bleeding and deformities
Effective for detecting both external and potential internal injuries.
Why is it important to look under layers of clothing during a blood sweep?
Blood can collect between layers, indicating hidden injuries
Comprehensive assessment includes examining all areas of the body.
What should you do if a patient is bleeding internally?
Evacuate them as quickly as possible
Internal bleeding is a critical condition that requires immediate medical attention.
True or False: You should not check the ground or street for blood during the blood sweep.
False
Checking the surroundings can provide additional information about the patient’s condition.
What is a significant difference between wound management in the wilderness and urban settings?
Backcountry wounds are often dirty or may become dirty, and there is often a lack of first aid materials.
What is the first step in managing a wound after the primary survey?
Gain exposure to the injured area.
What is hemostasis?
Stopping the bleeding.
What does ‘M’ stand for in the MARCH protocol?
Massive hemorrhage.
What is the first step in stopping any blood loss?
Application of direct pressure.
What should you do if direct pressure does not stop the bleeding?
Use a tourniquet.
True or False: Elevation of the limb above the heart is often sufficient to stop bleeding.
False.
Where should a tourniquet be placed?
About two to four inches above the wound.
What should you mark on the patient’s forehead after placing a tourniquet?
The time that you placed the tourniquet.
What is the most important intervention to prevent infection in wound management?
High-pressure irrigation.
What should be used to create a high-pressure stream of water for irrigation?
A catheter tip or a plastic bag with a small hole.
What should be done to visible foreign matter in a wound?
Remove it to minimize infection, inflammation, and discomfort.
What is the purpose of dressing a wound?
To protect wounds from the environment and help prevent infection.
Fill in the blank: If a commercial pad or dressing is not available, improvise using a _______.
4 x 4 pad covered in an antibiotic ointment.
What types of injuries require consideration for evacuation?
- Complex or mutilating wounds
- Grossly contaminated with penetrating debris
- Laceration of eyelid, ear or cartilage
- Penetration of bone, joint or tendon
- Bites of hands, legs or feet
- Amputations
What recent studies suggest about wound scabbing?
Keeping the wound environment moist promotes healing and reduces scar formation.
What should be done daily to keep a wound moist?
Apply Vaseline, honey, or a clean and moist dressing.
True or False: Wounds should be kept exposed to the air to promote healing.
False.
What should be done to wounds to minimize scab formation?
Rinse daily and inspect dressings.
What are the three rules for wound healing?
Keep them clean, keep them moist, keep them covered
What are the two courses of action for closing a laceration in the wilderness?
- Primary closure
- Delayed primary closure
What methods can be used for primary closure of a laceration?
- Sutures
- Staples
- Tape
- Skin glue
What is the advantage of primary closure compared to delayed primary closure?
Immediate treatment with better mobility and less pain
What is the main disadvantage of primary closure?
Higher risk of infection
What is used to achieve closure with steri-strips or tape?
Place steri-strips or tape over the wound and pull the wound together
Where are staples appropriate for use when closing wounds?
Anywhere except the face
What is skin glue used for?
Closing small and uncomplicated lacerations
What must be done to flexible parts of the body after applying skin glue?
Immobilize the joint with a splint
How are burn injuries classified?
- By Depth
- By Area
- Location on the body
What are the three depths of burns?
- Superficial
- Partial thickness
- Full thickness
What is a characteristic of superficial burns?
Skin can become red and painful
What treatment is recommended for superficial burns?
Aloe-vera gel and cool damp cloths
What should be avoided to prevent increased scar formation in superficial burns?
Leaving the wound to dry
What is the treatment for partial and full-thickness burns?
- Gently clean with cool water
- Trim away loose skin
- Apply antibacterial ointment
- Cover with a non-adhesive sterile dressing
What should not be applied directly to burns for more than 15 minutes?
Ice
What is the Rule of Nines used for?
To aid in decision making for evacuation based on total body surface area affected by burns
What percentage of body surface area does each arm represent in the Rule of Nines?
9%
What percentage of body surface area does each leg represent in the Rule of Nines?
18%
When should a burn victim be evacuated?
- Partial thickness burns greater than 10% body surface area
- Full thickness burns greater than 1% body surface area
- Burns involving the face, hands, feet, or genitals
- Electrical burns
- If the burn victim is medically ill
- Uncontrolled pain
- Burns complicated by smoke or heat inhalation
What is a blister?
A pocket of fluid between the upper layers of skin
Commonly develops from friction, freezing, or burns.
What are the common causes of blisters?
- Friction (e.g., from poorly fitting shoes)
- Freezing of the skin (frostbite)
- Burns
What is the purpose of a blister?
To protect and cushion the layers underneath the skin
What can blisters be filled with?
- Serum
- Plasma
- Blood
- Pus
What is a ‘hot spot’ in relation to blisters?
A sore spot that usually forms before a blister
What should you do if a small blister or hot spot forms?
Place a dual-layer pad over that area
What is Blist-o-ban?
A material used to address friction and shear forces on the skin
How does a dual-layer pad prevent blisters?
It allows the bandage to glide smoothly, deflecting friction and shear forces away from the skin
What is the key to preventing friction blisters on feet?
Reducing hot spots by properly breaking in boots and reducing moisture by wearing wool socks
How can you treat a blister that has already formed?
Cut a hole in the moleskin and place the ring around the blister
When should a blister be opened?
If it is 2 cm in diameter or larger, or if it has already ruptured
What is Medihoney?
A honey-based treatment used in wound care to prevent infection and speed healing
What are the benefits of using Manuka honey in wound care?
Contains methylglyoxal which helps fight a broader range of bacteria strains
What are some over-the-counter topical first aid antibiotics?
- Bacitracin
- Neomycin
- Polymyxin B sulfate
What is Silvadene Cream 1% used for?
As a topical antimicrobial drug for prevention and treatment of wounds and burns
What are the four components of a tooth?
- Enamel
- Dentin
- Cementum
- Pulp
What is the hardest substance in the body?
Enamel
What is the function of dentin?
Lies beneath enamel and cementum; makes up a significant portion of the tooth
What happens if the dentin tubules become exposed?
Teeth become very sensitive to cold and air
What is the function of cementum?
Covers the root of the tooth and is similar in hardness to bone
What does the pulp of a tooth contain?
Nerves and blood vessels that supply the tooth
What is pulpitis?
Inflammation of the pulp, primary cause of toothaches
What can cause inflammation of the pulp?
- Bacterial entry from tooth decay
- Trauma
- Fillings placed near the pulp
What symptoms indicate pulpitis?
- Sensitivity to heat or cold
- Pain after removal of stimulus
What are common symptoms of pulpitis?
Sensitivity or pain to stimuli such as cold, hot, sweets, or tapping
What initial treatment should be done for pulpitis?
Remove irritants or debris, usually by swishing the mouth with warm water
What medication can be given to reduce pain from pulpitis?
Ibuprofen
What should patients with pulpitis do after initial treatment?
See a dentist upon returning home
What should you do when a filling or crown falls out?
Remove debris and fill the hole with temporary filling material
What are the two products you can use for temporary fillings?
- Cavit
- IRM
What is a characteristic of Cavit?
Comes pre-mixed and hardens once placed in the mouth
What is the advantage of IRM?
Can be mixed to any desired consistency
What types of activities commonly lead to dental trauma?
- Mountain biking
- Skiing
- Climbing
- Rafting
What is a common symptom of a chipped tooth?
An obvious chip in the tooth, usually without pulp exposure
What is the treatment for a chipped tooth?
Pain management and smoothing sharp edges with temporary filling
What defines a tooth fracture?
A very large part of the tooth is broken with loose fragments present
What should be done for a fractured tooth?
Remove loose fragments and cover the tooth with a temporary filling
What happens when a tooth is knocked loose?
The tooth can reattach and become secure again over time
What should patients do if their tooth is knocked loose?
Eat soft foods and take Ibuprofen
What is the best immediate action if a tooth is knocked out?
Try to put the tooth back in its socket
What is the success rate of a replanted tooth if done within 20 minutes?
High rate of success
What should you not do when handling a knocked-out tooth?
- Scrub
- Scrape
- Disinfect
- Let the root surface dry out
What is the best solution to store a knocked-out tooth?
- Hank’s Balanced Salt Solution
- Milk
How long can a tooth last in Hank’s Balanced Salt Solution?
24 hours
How long can a tooth last in milk?
About 6 hours
What are some not so great solutions for tooth storage?
- Salt water
- Saliva
What is a poor solution for tooth storage?
- Water
- Sports drinks
Why is water not a good storage medium for a tooth?
Destroys the cells on the tooth
What is a common limitation of saliva as a storage medium?
Contains enzymes and bacteria that can damage a tooth over time
What types of injuries are most commonly associated with mountain biking?
Wounds and bruises
Wounds and bruises account for the highest percentage of injuries sustained while biking.
What percentage of mountain biking injuries are fractures?
4%
Fractures are among the less common types of injuries in mountain biking.
Which body parts are most commonly injured in mountain biking?
- Neck
- Knees
- Buttocks/Groin
- Upper Extremities
These areas are where bikers most frequently seek medical care.
What is the recommended safety gear for mountain bikers to prevent head injuries?
Helmet
Bikers should always wear a helmet, which should be checked for integrity after any impact.
What are the clinical findings that may indicate a skull fracture in head injury cases?
Clear liquid leaking from the ears or nose
This symptom constitutes a medical emergency.
What are the common signs of a concussion?
- Headache
- Slurred speech
- Vomiting
- Delayed speech
- Disorientation
- Memory deficits
- Intense emotions
- Vertigo
- Nausea
- Vacant stare
- Delayed motor responses
- Confusion
- Loss of consciousness
- Dizziness
These symptoms may vary based on the severity and location of the concussion.
What is Micro-Whiplash syndrome associated with?
Tail vibrations on the neck
This syndrome can occur over extended periods while biking.
What can help manage generalized neck and back pain from biking?
- Massaging
- Ice
- Stretching
- Non-sedating pain relievers
These methods can alleviate discomfort from micro-injuries.
What conditions can arise from improper saddle height in biking?
- Patellar tendonitis
- Quadriceps tendonitis
These conditions often present with patellar pain, swelling, and joint tenderness.
What symptoms can occur if the saddle is positioned too high?
- Saddle sores
- Chafing
These issues result in localized skin irritation.
How can saddle sores and chafing be prevented?
- Keeping the area clean and dry
- Wearing seamless shorts
These practices can help alleviate symptoms associated with saddle sores.
What is the recommended action if concussion symptoms worsen and last longer than 15 minutes?
Evacuate the patient
This is crucial in managing head injuries effectively.
True or False: Most fractures and dislocations in mountain biking occur in the lower extremities.
False
Most fractures and dislocations occur in the upper extremity.
Fill in the blank: The treatment of a concussion varies with the _______.
[severity]
Mild concussions often require monitoring, while severe cases may need intensive care.
What is the proper seat height for a bike rider?
The rider should sit on the seat with their heel on the pedal, and the leg on the pedal should be straight.
How should the seat angle be adjusted for male and female riders?
For males, the seat angle is generally slightly elevated in the back; for females, it is generally depressed in the back.
What is the recommended handlebar position relative to the saddle?
The handlebar should be positioned one to four inches below the level of the saddle.
What percentage of a rider’s body weight should rest on the arms while riding?
About one third of the rider’s body weight.
What adjustments can be made to handlebars during long rides?
The height and positioning of the handlebars can be adjusted to help with back and neck pain.
When did rock climbing begin as a distinct athletic activity?
In the last nineteenth century in Europe.
What is the origin of rock climbing according to recent research?
Rock climbing began in Africa millions of years ago with our primate ancestors.
What is the most common injury associated with rock climbing?
Falling is the most common injury.
How do climbing ropes help reduce the force felt by a climber during a fall?
Climbing ropes are dynamic and can stretch up to 30% of their length.
What happens when a climber passes their leg in front of the rope during a fall?
The rope can grab their leg and flip them upside down, potentially causing head or neck impact.
What is the most dangerous moment for a climber?
The transition to descending after reaching the top of a route.
What critical mistake can lead to climbing deaths during descent?
Thinking they are secured to their second system and falling the full length of the route.
What can happen to a belayer during a fall?
The belayer can be slammed into the wall by a falling climber due to a lack of slack.
What types of injuries can occur to belayers?
Traumatic injuries including sprained and broken ankles and arms.
What can happen to climbers if their belayer is injured or killed?
Climbers can become stranded.
Fill in the blank: Rock climbing has been around for a very long time, with evidence of it dating back to the ______ century.
True or False: Helmets worn while climbing can help reduce the risk of severe spinal traumas and concussions.
What type of injuries are common in climbing?
Overuse injuries
These injuries often occur from overloading tendons, joints, and muscles.
What are the five pulleys in the fingers named?
A1, A2, A3, A4, A5
A1, A3, and A5 are considered minor pulleys, while A2 and A4 are major pulleys.
What is the primary function of the finger pulleys?
To prevent ‘bowstringing’
Pulleys hold tendons tightly to the bones.
Which pulley is most commonly injured in climbers?
A2 pulley
The A2 pulley is often cited as the most injured pulley that presents to clinicians.
What is the basic mechanism for flexor tendon pulley injury?
Force applied above what the pulley can tolerate
This often occurs when using the ‘crimp grip’.
What is a recommended prevention method for pulley injuries?
Gentle climbing and focus on good technique
Climbers should prioritize using their feet for upward progress.
What is the first step in healing a finger pulley injury?
Applying ice and taking an anti-inflammatory
Time off climbing is necessary until healing occurs.
What materials are most rock climbing shoes made of?
Leather uppers with rubber toe and heel caps
The rubber is specially formulated to improve friction.
Why do climbers wear climbing shoes several sizes smaller than street shoes?
To improve performance on different terrain
Features include downturned toes and stiff toe boxes.
What is suspension trauma?
A condition where blood pools in the legs while in a harness
It can lead to lightheadedness or passing out.
What are the symptoms of suspension trauma?
Lightheadedness and ultimately passing out
Symptoms can occur after over an hour of suspension, or within 5-10 minutes in 20% of cases.
What is the highest priority for field care of a suspension trauma patient?
Urgent evacuation to the ground
This is crucial as the condition can be life-threatening.
How many bones are in each foot?
28 bones
This represents nearly one-fourth of all the bones in the entire body.
What is the role of the big toe during hiking?
Grips the feet to the walking surface
The big toe carries part of the body weight with each step but no weight rests on it when standing.
How many arches does the foot have, and what is their purpose?
Three arches designed to act like springs
They aid in propulsion, store energy, and absorb shock.
What issues can arise from having low arches or flat feet?
Heel pain, arch pain, plantar fasciitis
A person may walk with their feet rotated incorrectly.
What problems can high arches cause?
Excessive pressure on the back part and forefoot areas
This can lead to heel pain and plantar fasciitis.
What should be done with useless shoe inserts?
Remove them and replace with proper arch supports
Arch supports are a less expensive alternative to new shoes.
What is the significance of activity-specific shoes?
They are designed for different movements
Running shoes for forward motion and basketball shoes for side-to-side movements.
What can happen if the wrong shoes are used for outdoor support?
Knee, hip, and back pain
Old and worn-out shoes can lead to awkward foot strikes.
How often should daily shoes be replaced?
Every six months at most
Monitor soles and replace or resole when support is low.
What is the proper fit for hiking shoes?
Half-inch space between longest toe and front of shoe
Also, the index finger should fit between shoe and foot with little force.
What is the importance of clipping toenails before a hike?
Prevents trauma to the nails
Long nails can be pushed into by shoes, causing blood to form under them.
Is it better to wear one sock or two while hiking?
It comes down to personal preference
Both approaches can protect your feet if appropriate socks are used.
What is the purpose of a thin, moisture-wicking synthetic sock?
Reduces friction and wicks moisture away from the foot
It is typically worn under an outer sock.
What materials are commonly found in hiking socks?
A blend of fabrics for comfort, warmth, durability, and fast drying
Hiking socks are rarely made from a single fabric.
What is the most popular material for hiking socks?
Wool
Wool is recommended above all other materials for hiking socks.
What materials are commonly blended with wool in hiking socks?
- Synthetic materials
- Polyester
- Nylon
- Spandex
Blending improves durability and drying speed.
What are the properties of polyester as a sock material?
Insulates, wicks moisture, and dries quickly
Polyester is a synthetic material.
What is the role of nylon in hiking socks?
Adds durability and improves drying times
Nylon is occasionally used as the primary material.
What are the characteristics of silk as a sock material?
Natural insulator, comfortable, lightweight, but not very durable
Silk is occasionally used in sock liners.
What is the purpose of adding spandex to hiking socks?
Helps socks hold their shape and minimizes bunching and wrinkling
Spandex is included in small percentages.
What type of socks should be avoided for hiking?
100% cotton socks
Cotton absorbs sweat and dries very slowly.
What is a blister?
A pocket of fluid between the upper layers of skin, under the epidermis
Blisters commonly develop on the feet during hiking.
What causes blisters to form?
Friction between the shoe and foot
Friction can be caused by the force of the shoe and the interaction of skin and sock.
What is a ‘hot spot’ in the context of blisters?
A sore spot where blisters usually begin to form
Identifying hot spots early can help prevent full-blown blisters.
What material can be placed over a hot spot to prevent blisters?
Dual-layer pads, such as Blist-o-ban
These pads help reduce friction and pressure.
How should a blister that has already formed be treated?
Cut a hole in moleskin or duct tape and place it around the blister
This reduces pressure and pain on the blister.
When is it appropriate to open a blister?
If the blister is 2 cm in diameter or larger
Opening smaller blisters is generally not recommended.
What are the three ways heat moves from the body?
- Radiation
- Conduction
- Convection
These methods describe how heat is lost to the environment.
What is the normal human body temperature?
Around 98.6°F (37°C)
This temperature is crucial for understanding heat loss.
What is the best conductor of heat?
Water
Water conducts heat away from the body effectively.
What is the purpose of layering clothing for heat retention?
Traps body heat in dead air space and wicks moisture away
Layering prevents conductive and convective heat loss.
What is the function of the base layer in clothing?
Moves or ‘wicks’ water away from the skin
The base layer is essential for moisture management.
What is the purpose of the base layer in clothing?
To wick sweat away to keep you dry
This includes socks, underwear, and an initial pant/shirt base layer if in colder conditions.
What is the function of the middle layer in clothing?
To retain body heat by creating ‘dead air’
This can include clothing such as shirts and pants.
What is the role of the outer layer in clothing?
To act as a water- or wind-resistant barrier
This layer helps prevent convection loss of heat.
Why is it prudent to pack multiple layers of clothing?
To adapt to changing weather conditions
You can peel off layers to cool down or add layers if it gets colder.
What is a key characteristic of loose-fitting clothing in hot environments?
It facilitates ventilation by moving heat away from the body
What is one of the primary benefits of wool as a fabric choice?
It is an excellent insulator and maintains insulation even when wet
Merino wool can hold 30% of its weight in water absorption without feeling wet.
What makes ultra-fine merino wool a preferred choice?
It is itch-free, naturally breathable, moisture-wicking, and fast-drying
What are the advantages of synthetic fabrics like fleece?
Quick-drying, durable, and affordable
Synthetics have 3D patterns that imitate wool.
What is ‘down’ in the context of insulation?
The under plumage found beneath the feathers of ducks and geese
Down provides natural insulation.
What does the fill rating of down insulation indicate?
The amount of goose down added to the coat or sleeping bag
Higher numbers indicate more insulation and warmth.
What is a significant drawback of down insulation when wet?
It clumps and loses its ability to create dead air space
What are the characteristics of silk as a fabric?
Soft, thin, and light; good for cool weather
Silk does not wick moisture as well as wool or synthetics.
Why is cotton considered a poor choice for outdoor activities?
It does not wick moisture effectively and does not dry quickly
Wet cotton can lead to hypothermia.
What is the phrase used to describe the dangers of cotton in outdoor activities?
‘Cotton kills’
What are synthetic fibers primarily made from?
Chemicals created to produce fabrics like polyester, rayon, and acrylic
What are some advantages of synthetic fibers?
Resistant to insects and fungus, cheaper to produce, and create dead space
What is a serious drawback of synthetic fibers?
They will melt and have little to no ability to absorb water
Why are synthetic clothes considered ideal in wet environments?
They always insulate, even when wet
What are the disadvantages of synthetic clothing for hiking?
They are heavy and do not pack well
What is Quallofil used for?
Sleeping bags and insulated jackets
What are the drawbacks of Quallofil?
It is heavy and bulky
What is PolarGuard known for?
It is considered the ‘premiere’ synthetic insulation
What improvements have been made to PolarGuard?
Less bulky and improved insulating abilities by around 10%
What are super thin fibers used for in clothing?
They create dead air space and more insulation
Name two examples of super thin fibers.
Primaloft and Thinsulate
What is the purpose of the Base layer in clothing?
To wick sweat away and keep you dry
What are examples of high-performance fabrics used for the Base layer?
- Wool
- Synthetic
- Silk
What is the function of the Middle layer?
To retain body heat
What materials are popular choices for the Middle layer?
- Wool
- Down
- Fleece
- Synthetics with high-loft options
What are some suitable options for wet weather in the Middle layer?
Synthetic pile or fleece options
What is the role of the Outer layer?
To serve as a water- or wind-resistant barrier
What features should an Outer layer have for wet conditions?
- Waterproof
- Sealed seams
- Zipper guards
- Cinch-able hoods
What is a good rule of thumb for the Mid-layer in colder weather?
Plan on wearing a synthetic as your go-to and pack an extra down jacket
What should you remember about dressing for the outdoors?
What you wear keeps you safe against the elements
Fill in the blank: There is no bad weather, only bad _______.
clothing
What has caused a 50 percent decrease in skiing related injuries since the 1970s?
Improvement of equipment with safety release bindings and hard-shell boots that allow for better control
What type of injuries have increased despite improvements in skiing equipment?
Soft tissue injuries
What percentage of downhill skiing accidents are due to improper equipment maintenance?
Nearly 50 percent
What is the primary cause of 70 percent of lower leg fractures and knee injuries while skiing?
Improper binding release
What is the most common type of injury among skiers?
Soft tissue knee injuries
Why are beginner skiers particularly susceptible to medial collateral ligament (MCL) injuries?
They are taught to use the ‘snowplow’ or ‘wedge’ technique, which can put stress on the MCL
What should be done if a knee injury is suspected while skiing?
Immobilize the knee with a splint and take the patient off the hill
What is the role of the anterior cruciate ligament (ACL) in the knee?
To prevent backward motion of the femur on the tibia and hyperextension at the knee
What is a common symptom reported by skiers who suffer an ACL injury?
Hearing an audible ‘pop’ or ‘snap’ prior to the knee giving out
What is a ‘boot top’ fracture?
A fracture that typically occurs at the top of the ski boot due to its hard shell providing support
What is the most common upper extremity injury among skiers?
Skier’s thumb injury
How does a skier’s thumb injury typically occur?
When the skier falls on their ski pole or the thumb catches snow during a fall
What are the symptoms of skier’s thumb injury?
Tenderness in the area with deep throbbing pain
What is the potential severity of head injuries in skiing?
They can cause a bleed in the brain
What can cause an MCL tear while skiing?
The impact caused by one leg falling on another
What is the common outcome of an ACL injury?
Popping sound during injury and potential knee instability
What type of injuries may occur due to a fall affecting the shoulder?
Injuries to ligaments, muscles, and tendons
What is the instinctual action that can lead to wrist injuries while skiing?
Reaching out a hand for support during a fall
What is skier’s thumb?
An acute injury that occurs when falling with your hand in the ski pole strap, causing a ligament tear
Fill in the blank: The most injured structure of the knee is the _______.
anterior cruciate ligament (ACL)
True or False: Most other skiing injuries are less severe than head injuries.
True
What is a boot top fracture?
Fracture of the tibia and/or fibula above the top of the boot.
These fractures almost always require surgical intervention due to high non-union rates.
What is the significance of helmet use in skiing?
Helmets offer limited protection beyond 12 mph and can create a false sense of security.
This may lead to reckless behaviors among skiers.
What should be suspected when assisting a patient who has fallen?
A head injury and common signs of concussions.
Vigilance is necessary to identify these injuries.
What is a toe side fall in snowboarding?
A fall where the snowboarder falls face forward toward the ground.
This can lead to clavicular fractures, shoulder separations, and head injuries.
What injuries can occur from a toe side fall in snowboarding?
Clavicular fractures, shoulder separations, facial injuries, and head injuries.
If the snowboarder braces for the fall, it can result in severe wrist or humeral fractures.
What is the most common wrist fracture seen among snowboarders?
‘Dinner fork’ fracture.
This term describes the characteristic appearance of the fracture.
What is the impact of wrist guards in snowboarding?
They prevent wrist injuries but may transfer forces to proximal joints, causing forearm fractures and shoulder injuries.
Wrist guards are common protective equipment for snowboarders.
What is a heel side fall in snowboarding?
A fall where the snowboarder falls backward toward the ground.
This can lead to buttock contusions, spinal compressions, and head injuries.
What percentage of drowning victims are male?
Nearly 80%.
This statistic highlights a gender disparity in drowning occurrences.
What role do drugs and alcohol play in drowning incidents?
They are involved in half of adolescent and adult deaths associated with water recreation.
Substance use significantly increases the risk of drowning.
What is the leading cause of drowning deaths related to boating?
Failure to wear a personal flotation device (PFD).
This accounts for 88% of drowning deaths while boating.
What happens to the lungs during drowning?
Victims inhale water, causing pulmonary damage and hypoxemia, leading to secondary organ damage.
The heart becomes ischemic, and neurological injury can result.
What are common heart issues following drowning?
Heart arrhythmias, or irregular heartbeats.
These are typically secondary to severe hypoxemia.
What is hypoxia?
A lack of oxygen that causes injury and inflammation in the brain, potentially leading to cerebral edema.
Oxygenation is crucial in managing submersion injuries.
How does drowning behavior appear to untrained observers?
It can look like calm, safe behavior.
Drowning itself is quick and silent, often preceded by distress that may not be obvious.
What is the instinctive drowning response?
A set of autonomic reactions occurring in the 20 to 60 seconds before sinking underwater.
Trained rescuers learn to recognize these movements.
What should a rescuer use to approach a drowning victim?
A buoyant object or approach from behind
This helps prevent the victim from submerging the rescuer.
What is the recommended technique if a rescuer is pushed underwater by a drowning victim?
Dive downwards to escape the victim
This technique allows the rescuer to avoid being held down.
What is the first priority after rescuing a drowning victim?
Transport the victim to the water’s edge
This prepares the victim for removal from the water.
How should a cooperative drowning victim be towed?
Held at the armpits
This method allows for better control and safety.
How should an unconscious drowning victim be towed?
Held at the chin and cheeks
This ensures the mouth and nose are above water.
What is the primary issue drowning causes?
An oxygenation problem
Drowning primarily affects the ability to breathe.
What does the European Resuscitation Council recommend for rescue breaths during CPR?
Five rescue breaths instead of two
This increases the likelihood of reviving the patient.
What is more important than post-submersion actions?
Prevention
Preventative measures can avoid drowning incidents altogether.
What should be avoided while participating in water activities?
Alcohol
Alcohol impairs judgment and increases drowning risk.
What safety equipment should everyone on a boat wear?
Approved personal flotation devices
These devices help keep the person’s head above water.
How many thunderstorms occur worldwide each day?
Approximately 50,000
Thunderstorms are a common global phenomenon.
How many people are estimated to be killed by lightning worldwide each year?
About 2,000
This figure is an estimate by National Geographic.
Which region in the United States is most prone to lightning?
Florida
Florida experiences a high frequency of thunderstorms.
What is the temperature reached by the heat of a lightning strike?
Around 27,000 C° (48,632 F°)
This extreme heat contributes to the formation of thunder.
What phenomenon is created by the rapid expansion of compressed air from a lightning strike?
Thunder
The shock wave produced results in the loud noise associated with lightning.
Where do most lightning deaths occur?
Open fields, sport parks, in/on water, under trees, on beaches, working on farm equipment
These locations are particularly dangerous during thunderstorms.
Fill in the blank: Lightning strikes the earth more than ______ times each second.
100
This statistic emphasizes the frequency of lightning activity.
What is positive lightning?
Lightning that originates from the top of a thunderstorm, which carries a large positive charge.
Why is positive lightning particularly dangerous?
It frequently strikes away from the rain core, usually ahead of the thunderstorm, striking areas considered low risk.
What is the recommended action before a storm strikes?
Get to shelter.
What is ground current?
Electricity that spreads out in the ground after a lightning strike, potentially causing injury.
What is side splash in the context of lightning injuries?
Lightning that jumps from an object to a person or from one person to another.
What are upward streamers?
High objects and the ground that produce leaders rising just prior to lightning strikes.
What is a direct strike?
Lightning that hits someone directly from the sky.
What are contact strikes?
Lightning that enters a person through wiring or water pipes.
What is blunt trauma in relation to lightning injuries?
Injuries caused by the concussive force of the lightning strike or being thrown by muscular contraction.
What percentage of lightning deaths are caused by ground current?
50-55%.
What is the most common cause of death in lightning strikes?
Cardiopulmonary arrest.
What should be done for a person in respiratory arrest after a lightning strike?
They may need only artificial respiration to prevent secondary hypoxic arrest.
What is the MARCH protocol?
A guideline to follow in emergencies, particularly for lightning strike victims.
What should you do if you hear thunder?
Seek shelter indoors.
What are some tips to reduce lightning strike risk outdoors?
- Avoid open fields
- Stay away from tall, isolated trees
- Spread out in groups
- Set up camp in low areas
- Stay away from water and metal objects
True or False: A tent offers protection from lightning.
False.