CNOR Flashcards
What is the first sign of Malignant Hyperthermia?
↑ ETCO2 & tachycardia
What is the treatment for Malignant Hyperthermia?
dantrolene (2-3mg/kg IV every 5min) w/ sterile water
What are the nursing interventions when a patient shows signs of Malignant Hyperthermia?
Stop anesthetic
Start central line
Bring down body temp
How do you bring down body temp for Malignant Hyperthermia?
Chilled Water
Ice Packs
Bladder instillation
What is the most common trigger of Malignant Hyperthermia?
Halothane
What is Halothane?
General anesthetic for induction / maintenence
What are the symptoms of Malignant Hyperthermia?
skeletal muscle contractions
↑ body temp
hypoxia
desaturated blood
mottled skin
cola colored urine
What is the main complication of Malignant Hyperthermia?
Rhabdomyolosis
What is Rhabdomyolosis?
damaged muscle tissue releases proteins and electrolytes into the blood - can lead to death
When can signs of Malignant Hyperthermia appear?
Up to 1-3 days post op
What anesthetics are safe to use in patient with Malignant Hyperthermia?
Nitrous oxide and sodium panthenol
What are the risk factors of Malignant Hyperthermia?
Muscular dystrophy
halothane use
first time under anesthesia
younger patient
Where should the safety strap be placed during positioning?
2” above the knees over the blanket
What position should the patient’s arms be in to prevent brachial plexus injury during surgery?
The patient’s arms should be at a 90° angle when supine.
How many people should be used to move an incapacitated patient during surgery positioning
4+
Who calls the count when moving a patient?
The person at the head
What is the shearing force?
dragging the skin across the sheet
Avoid
What is the recommended hand position for a patient in the supine position when arms are tucked?
Arms should be tucked with thumbs up (palms towards the body) to prevent ulnar injury
What are the pressure areas to be monitored in supine positioning?
scapula, elbows, sacrum, coccyx, heels, and occiput
What is the positioning for a patient undergoing perineal prostatectomy?
high lithotomy
What precautions should be taken during positioning for a pregnant patient?
positioner should be placed under the right side (left lateral decubitus) to relieve pressure off the inferior vena cava (IVC) and aorta
Where does the kidney rest?
12th rib
What is Trendelenberg?
feet higher than head
What should be monitored in Tredelenberg?
Intrathoracic and intracranial pressure
What are the effects of Low Trendelenburg?
cerebral edema and ischemic pressure on optic nerve
What are the effects of Steep Trendelenburg?
optic nerve neuropathy
What is reverse Trendelenberg?
Head higher than feet
What are the effects of low reverse Trendelenburg?
venous pooling to lower body
Where does the safety strap go in lithotomy?
Off the patient
What should be monitored in hemilithotomy positioning?
compartment syndrome
Where do candy canes put pressure?
plantar nerve / ankles & feet
How should legs be managed during positioning changes (ex: lithotomy)?
Elevate and lower them together for hemodynamic stability
Which nerve can become damaged in lithotomy?
Obturator nerve (hip)
Which nerve can become damaged in obese patients in lithotomy?
Peroneal nerve
How to avoid peroneal nerve damage?
pad the lateral aspect of the knee
What is seated position?
knees flexed at 30°
What effects does seated positioning have?
bradycardia and hypotension
What are the risks of beach chair positioning?
DVT, VTE, or air embolism
How do you treat an air embolus?
Remove air with CVC from right atrium, put the patient in steep trendelenburg with right side up to prevent air embolus from going into lungs
Which pressure points should be monitored in seated positioning?
Scapula, heels, ischial tuberosities
Which pressure points should be monitored in lateral positioning (>4hr)?
Ear, acromion, olecranon, iliac crest, trochanter, lateral leg, and malleolus
What positioning tools are needed for wide axillary positioning?
chest roll/support under ribs
No rolled towels/blankets
How should the upper arm be positioned in lateral positioning?
Level with the shoulder
Where should the safety strap be placed in lateral positioning?
at the hip
What pressure points should be monitored in lateral positioning?
ear, iliac crest, dependent knee, acromion process, greater trochanter of femur, malleolus
How should the chest rolls be positioned in the prone position?
laterally from clavicle to iliac crest
What should be done to ensure proper foot positioning in the prone position?
pillow or ankle roll should be placed so that the feet are off the OR table
Where does the safety strap go in prone position?
over the thighs
What should be monitored for when the patient is in the prone position?
facial edema and ocular pressure
Where are the pressure points in prone position?
face, breasts, iliac crest, patella, male genitalia, and dorsum of feet
How should cervical alignment be maintained during surgery in the prone position?
Keep cervical neck aligned with rest of spine
What potential issues can the jack-knife position cause?
circulatory changes and compromise respirations
When should hand hygiene be performed?
Before/after patient contact, touching surroundings, wearing gloves, eating/bathroom, touching bodily fluids, aseptic procedures, and handling medications
How long should hand hygiene be performed for C-Diff patients?
15 seconds with soap and water
What can hot water cause in hand hygeine?
dermatitis
What should be done after using hand sanitizer?
Let it dry naturally, avoid waving hands
How long should surgical scrub last?
2-5 minutes
When do bean bags cause injury?
When they are left on suction
What are the characteristics of iodine as a prep solution?
Intermediate acting, oxidizes bacteria, minimal residual effect
What are the effects of iodism?
burns, thyroid issues
What is iodism?
Too much iodine
What is contraindicated when using iodine?
pregnancy / lactation
What should be avoided when using iodine?
Mucous membranes
Where can iodine be safely used?
Perineum, eyes, ears
What alternatives can be used for iodine if allergic?
PCMX or undiluted 3% H2O2
What should be considered regarding iodine use and pregnancy?
iodine can cross placenta
What is the recommended eye prep solution?
Ophthalmic betadine
What are the characteristics of chlorhexidine gluconate?
Intermediate acting, disrupts cell membrane, long residual effect (up to 6 hours)
What inactivates iodine?
blood or mucus
What should be avoided when using chlorhexidine gluconate?
mucus membranes
What types of bacteria can ethyl/isopropyl alcohol effectively combat?
gram -/+
What is the residual effect of ethyl/isopropyl alcohol?
none
What types of bacteria is Chloroxylenol Parachlorometaxylenol effective against?
gram -/+, disrupts cell wall
Is Triclosan used as prep?
No, banned due to environmental impact and is antibiotic resistant
Where do you start prepping the abdomen?
at the incision line and it is not passed over
What does wearing a jacket during prep do?
prevents skin shedding
What action should be avoided during surgery regarding drapes?
Avoid repositioning
When can chlorhexidine gluconate be used?
in patients with VRE
Which areas are prepped first?
areas considered contaminated and umbilicus
What happens if hair is removed during surgical prep?
There are higher rates of post-op infection
What is the main source of transmission for microorganisms?
person to person contact
Where do bacteria commonly form biofilms?
warm, moist areas
What do Bacillus and Clostridium bacteria form?
endospores, which are hard to kill
What is the first line of defense against microorganisms?
skin
What type of bacteria is commonly found on the skin and body hair?
staphylococcus aureus
What does MRSA stand for, and how does it spread?
MRSA stands for Methicillin-resistant Staphylococcus aureus. It spreads through skin contact.
Name some diseases transmitted via droplet transmission.
common cold, chickenpox, flu, bacterial meningitis, strep throat, tuberculosis, measles, mumps, whooping cough, diphtheria, and pertussis.
When should a mask be worn to prevent droplet transmission?
within 3 feet of talking
What type of mask should be worn to prevent TB transmission?
N95
What are some ways to prevent airborne transmission in the operating room?
damp dusting, surgical plume (smoke), drapes, and minimal in/out traffic
How is prion disease characterized?
nonliving protein-based helical structure without DNA/RNA that forms a sponge-like protein in the brain
What is Creutzfeldt-Jakob Disease (CJD) commonly known as?
mad cow disease
How is Creutzfeldt-Jakob Disease diagnosed?
brain biospy
How can Creutzfeldt-Jakob Disease be transmitted?
blood, instruments, growth hormone, brain tissue, dual grafts, infected cattle, and can be inherited or spontaneous
How is prion disease inactivated?
heat, drying, freezing, most chemical radiation
What is Spongiform Encephalopathy (TSE)?
rare family of prions that causes fatal neuro disorders (ex: CJD)
What parts of the body does Creutzfeldt-Jakob Disease affect?
brain, spinal cord, CSF, cornea, present in low concentrations in other tissues
What are the long term effects of Creutzfeldt-Jakob Disease?
dementia and death
What is the recommended size for a tourniquet cuff?
Wide cuff (> 1/2 diameter of extremity)
What should be applied under the tourniquet cuff?
Wrinkle-free padding
How much higher should the tourniquet pressure be compared to SBP when placed on upper extremity, calf, and ankle?
30-70mmHg higher, typically at 200-250mmHg
When should antibiotics be given when using a tourniquet?
20 min before tourniquet goes up
What should the tourniquet pressure be when placed on thigh?
250-300mmHg or 400mmHg if patient is larger
How does limb occlusion pressure (LOP) affect tourniquet pressure settings?
Adjust pressure based on LOP or systolic pressure & limb circumference.
When is limb occlusion pressure checked?
Prior to inflation
How is limb occlusion pressure checked?
Use doppler to locate artery distal to cuff, slowly increase pressure until pulse stops
What is the recommended tourniquet pressure adjustment for LOP < 130 mmHg?
Increase the tourniquet pressure by 40 mmHg
What is the recommended tourniquet pressure adjustment for LOP between 130-190 mmHg?
Increase the tourniquet pressure by 60 mmHg
What is the recommended tourniquet pressure adjustment for LOP > 190 mmHg?
Increase the tourniquet pressure by 80 mmHg
How is pediatric tourniquet pressure adjusted in relation to LOP?
set 50 mmHg greater than LOP
How long can the tourniquet be inflated for upper extremity surgeries?
1 hr
What complication can arise from rapid deflation of a tourniquet?
Rush of metabolic waste and medications
What are the signs and symptoms of rapid deflation of a tourniquet?
Ringing ears, numbness/tingling in lips/fingers, loss of consciousness, seizures, arrhythmias.
How can you facilitate proper tourniquet application in obese patients?
Gentle traction of adipose tissue distal to the cuff
What should be documented regarding tourniquet use?
Location of cuff, cuff pressure, time of inflation and deflation, distal pulses before and after, person who applied cuff, skin protection measures, limb occlusion pressure, skin integrity before and after, and ID# of tourniquet used.
What are the contraindications for esmark use?
Risk of DVT, thrombus, infection, dislocated fractures, malignancy.
How long can the tourniquet be inflated for lower extremity surgeries?
90 min
How long can the tourniquet be inflated for pediatric surgeries?
75 min
What do you do if you go over the time limit for tourniquet?
deflate and allow for reperfusion for at least 10-15 minutes then reinflate
What are the potential complications of using a tourniquet?
hyperthermia (inflation), hypothermia (deflation), emboli (1 min after deflation), increased ICP, overpressurization (nerve damage, pain at site), ischemic injury, underpressurization (bleeding, venous congestion)
What overlap should be maintained when applying a tourniquet?
3-6 inches
Where should the tubing of a tourniquet be positioned on the extremity?
On the lateral aspect of the extremity.
What is the purpose of using an esmark bandage before inflating a tourniquet?
exsanguinate the limb
What should be done if you can’t use esmark to exsanguinate the limb?
Exsanguinate by elevation
What may cause rhabdomyolysis when using a tourniquet?
Compartment syndrome
What should be done if there is rapid delfation when using a tourniquet?
lactic acid bolus
What complications come from nerve damage from tourniquets?
permanent motor / sensory deficits
How should a timeout be performed when using a tourniquet?
mention placement of tourniquet
What are the 7 rights of medication administration?
Patient, drug, time, route, dose, reason, documentation
What precaution should be taken with medications regarding the rubber stopper?
Do not remove the rubber stopper from medications.
What are characteristics of Absorbable Gelatin?
Used for capillary bleeding, can soak up to 45x its weight, can be used on infected tissue
What are examples of Absorbable Gelatin?
Gelfoam, Surgiflo
What are characteristics of Oxidized Cellulose?
Cotton or rayon based, soak 10x its weight, not for long term use
Where can you place Oxidized Cellulose?
On sutures or wrap around oozing areas
What is Microfibrillar Collagen made from?
Bovine
How does Microfibrillar Collagen work?
swells to form a clot when dry and pressure is applied.
What are characteristics of Absorbable Collagen?
used for oozing / bleeding, not for infected wounds, 8-10 weeks to absorb
What does Thrombin do?
accelerates the clotting process
What is an example of Thrombin?
Tisseel
What is Magnesium Sulfate used for in pregnancy?
lower blood pressure and an anticonvulsant in preeclampsia
What should be avoided in patients with a PCN allergy?
Cefixime, Rocephin
Example of Oxidized Cellulose?
surgicel
What are the parameters to monitor during local anesthesia administration?
BP, HR/pulse, SpO2, pain, anxiety, LOC
What is the role of the monitoring RN during local anesthesia administration?
The monitoring RN can also serve as a circulator
How are esters metabolized?
pseudocholinesterase.
What is released during the metabolism of esters?
para-aminobenzoic acid (PABA)
What response can an allergy to esters cause?
histamine response
Name some examples of esters used in local anesthesia.
cocaine, procaine, and tetracaine
How are amides metabolized?
liver
Give examples of commonly used amides in local anesthesia.
bupivacaine, lidocaine, and mepivacaine
What is Local Anesthetic Systemic Toxicity (LAST)?
High serum levels of local anesthetics causing CNS and cardiovascular complications
When can signs of LAST appear?
Within 1 minute to 30 minutes after injection
How often should patients be assessed for LAST?
Frequently
What are the risk factors for LAST?
advanced age, liver disease, decreased albumin levels, CHF, ischemic heart disease, acidosis, meds that inhibit sodium channel, low EF, conduction abnormalities, BIER block
What are the initial signs of LAST?
Dizziness, numbness in the tongue, metallic taste, LOC, anxiety, agitation
What are the intermediate signs of LAST?
Shivering, slurred speech, confusion, seizures
What are the severe signs of LAST?
Coma, decreased heart rate, cardiac arrest
What is the first intervention step for LAST?
Call anesthesia
How should the airway be maintained in LAST?
100% oxygen and hyperventilation
What medication (and how) should be administered in LAST?
20% lipid emulsion 1.5 mL/kg bolus, repeat up to 3 times, then 0.25 mL/kg/min infusion IV
How can you prevent LAST when using local anesthetics?
Know and calculate the maximum dose
What should be done before injecting local anesthetics to prevent LAST?
Aspirate at the site
What should you ask the patient to help prevent LAST?
If they are experiencing symptoms
How should large or multiple wounds be repaired to prevent LAST?
Serial repairs
What is used to monitor moderate sedation?
Capnography, depth of sedation scale (ETCO2), BIS monitoring, and audible alarms.
What should be considered when adjusting medication doses for older adults during moderate sedation?
Dose adjustments are necessary, be aware of individual patient needs.
Why should airway obstruction be considered during the discharge of infants and toddlers?
Their heads may fall forward, causing airway obstruction.
Who provides guidelines for the scope of practice of the RN?
Nurse Practice Act (SBON, AORN)
Which ASA physical status classifications can an RN administer moderate sedation to?
ASA 1, 2, & 3
What patient characteristics should be avoided in moderate sedation?
Beards, dentures, and sleep apnea
What is required for the monitoring RN during moderate sedation?
No competing responsibilities and 2 RNs in the room at all times, with brief interruptible tasks allowed.
What areas should education and competency cover for moderate sedation?
Pharmacology, expected sequence of events, completing pain assessments, and patient teaching.
What are examples of regional anesthesia?
Topical (drops or ointment) and local infiltration.
How is local infiltration administered?
Injected into the incision site
How does epinephrine affect local infiltration?
delay absorption for post-op pain
What is the maximum dose of 1% lidocaine without epinephrine?
5 mg/kg/day
What is the maximum dose of 1% lidocaine with epinephrine?
7 mg/kg/day
Which herbal supplements are associated with liver damage?
Echinacea and kava.
What unusual effect can kava have when used with propofol?
Turns urine green
Which herbal supplements can increase the risk of bleeding?
Ginger, gingko, garlic, feverfew, saw palmetto, biloba, and omega-3
Which herbal supplements can cause arrhythmias or affect blood pressure?
Goldenseal, milk thistle, licorice, and ginseng with ephedra (with atropine)
Which herbal supplements can prolong emergence from anesthesia?
Gingko, St. John’s wort, and valerian
Which herbal supplement is associated with hypertension?
Ginseng
What is the function of mydriatics in eye medications?
Mydriatics dilate the pupil and reduce the effect of trauma by paralyzing the sphincter muscle of the iris.
Give two examples of mydriatics.
Neo-synephrine and atropine.
What is the function of miotic eye medications?
Miotics constrict the pupil and decrease intraocular pressure (IOP)
Which disease are myotic medications usually used in?
Glaucoma
Give two examples of miotic eye medications.
Miochol and miostat
What is the function of tropicamide in eye medications?
Tropicamide dilates the eyes and causes inability to focus due to its anticholinergic properties.
What type of eye medication is pilocarpine and when should it not be used?
Pilocarpine is a miotic and should not be used with cataracts.
How are aminoesters metabolized?
By plasma by liver enzymes
What can aminoesters stimulate?
Allergies
Give three examples of aminoesters.
Cocaine, tetracaine, and novocaine
How are aminoamides metabolized?
Liver
Give two examples of aminoamides.
Lidocaine and bupivacaine
What cardiac symptoms is lidocaine used for?
arrhythmias and pulseless ventricular tachycardia
How does bupivacaine compare to lidocaine in strength?
4x stronger
What areas are targeted by a femoral nerve block?
anterior thigh and knee, including the quadriceps and tendon repairs
What are the primary effects of benzodiazepines?
Reduce anxiety and provide sedation
What is Versed (Midazolam) primarily used for?
Amnesic and anti-anxiety effects
What is a key contraindication for Versed (Midazolam)?
Narrow-angle glaucoma
How is Versed (Midazolam) administered?
IV only
What is the duration of action for Versed (Midazolam)?
Short acting
How can Valium (Diazepam) be administered?
Orally or IV
What is a notable side effect of Valium (Diazepam) when given IV?
Can burn
What respiratory effect is associated with Valium (Diazepam)?
potent respiratory depressant
How long does it take for Valium (Diazepam) to be eliminated from the body?
Approximately 2 days
What is Romazicon (Flumazenil) used for?
As a reversal agent for benzodiazepines
What are the contraindications for Romazicon (Flumazenil)?
Seizures and tricyclic antidepressant (TCA) use.
How do our bodies control pain naturally?
Through natural endorphins.
What natural ability do humans have concerning pain?
The natural ability to ignore pain.
What is an endorphin?
Endogenous morphine
What effect can synthetic opioids have on the body?
Histamine release
What are high-risk factors associated with narcotic use?
Respiratory depression, head injuries, breathing problems, obesity, age over 60.
What are the key characteristics of Morphine/Duramorph?
Fast-acting, used for moderate to severe pain
What is the onset time for Morphine/Duramorph?
1-3 minutes
What are common side effects of Morphine/Duramorph?
Constipation and urinary retention
What is a notable complication of Morphine/Duramorph?
Nausea / vomiting
How long does Morphine/Duramorph last during conscious sedation or epidurals?
3-4 hours
What is the recommended dose of Morphine/Duramorph for conscious sedation or epidurals?
1-2 mg
How does Fentanyl/Sublimaze compare in potency to Morphine?
100x more potent
What is the onset time for Fentanyl/Sublimaze?
1-3 minutes
How long does a 25 mcg dose of Fentanyl/Sublimaze last?
30-60 min
What are potential side effects of Fentanyl/Sublimaze?
Delayed respiratory depression
What drug interaction should be considered with Fentanyl/Sublimaze?
MAOIs
How should IV Fentanyl/Sublimaze be administered?
Push slowly
What is the potency of Meperidine/Demerol compared to Morphine?
1/10th times the strength
What is the onset time for Meperidine/Demerol?
1-5 min
How long does a 10-20 mg dose of Meperidine/Demerol last?
1-2 hr
What additional condition is Meperidine/Demerol used for?
Shivering
What are the risks associated with Meperidine/Demerol?
Head injuries/increased ICP (increase in CSF pressure), liver or kidney damage.
How does Hydromorphone/Dilaudid compare in strength to Morphine?
7x stronger
How should IV Hydromorphone/Dilaudid be administered?
Push slowly
What is the function of Narcan/Naloxone?
It is a reversal agent that competes for opiate receptors.
What is the initial dose range for Narcan/Naloxone?
0.4-2 mg
How is Narcan administered?
IV, IM, subcutaneously, or nasally
How long does Narcan/Naloxone last?
30-45 min
What is the recommended redosing interval for Narcan/Naloxone?
0.1-0.2 mg at 2-3 minute intervals, redose every 2 minutes up to 10 mg.
What are potential side effects of Narcan/Naloxone?
Increased heart rate, stroke, hypertension, respiratory depression
How is Narcan/Naloxone metabolized?
Liver
How is Narcan/Naloxone excreted?
Kidneys
What is the primary use of neuromuscular blockers in surgery?
abdominal surgery and work on muscles
What do nondepolarizing neuromuscular blockers do?
Prevent muscle contraction by binding to cholinergic receptors
What are some characteristics of neuromuscular blockers?
do not cause fasciculation and are not MH triggers.
What are acetylcholine competitive antagonists?
Blocking agents that block acetylcholine and do not interact with the receptor (slower than succinylcholine)
What is Atracurium/Tracrium used for?
Intubation
How long does Atracurium/Tracrium last?
30-60 min
What are the effects of Atracurium/Tracrium?
Decreased blood pressure, vasodilation, and histamine release.
What is the intubation dose for Atracurium/Tracrium?
0.3-0.5 mg/kg
How long does Vecuronium/Norcuron last?
30 min
What is the intubation dose for Vecuronium/Norcuron?
0.6 mg/kg
What are the storage requirements for Vecuronium/Norcuron?
Must be refrigerated
Are there any notable effects of Vecuronium/Norcuron?
No notable effects
How long does Rocuronium/Zemuron last?
30-90 min
What is the intubation dose for Rocuronium/Zemuron?
0.6-1.2 mg/kg
What are the effects of Rocuronium/Zemuron?
Increased heart rate and possible reactions with antibiotics; patients recover quickly.
How long does Pancuronium/Pavulon last?
Over 1 hr
What are the effects of Pancuronium/Pavulon?
Decreased blood pressure, increased heart rate, and bronchospasm.
What are the contraindications for Pancuronium/Pavulon?
Neonates and children (contains benzyl alcohol)
What is Neostigmine/Prostigmine used for?
reversal agent that inhibits the destruction of acetylcholine
What are the contraindications for Neostigmine/Prostigmine?
Asthma
What are the side effects of Neostigmine/Prostigmine?
seizures, coronary artery disease, arrhythmias, bowel obstruction, and urine retention
What do anticholinesterases do?
Block acetylcholinesterase, increase acetylcholine concentration in the neuromuscular junction, and displace muscle relaxants from acetylcholine receptors.
What are the unwanted side effects of anticholinesterases?
Decreased heart rate, bronchospasm, and enhanced GI peristalsis.
Why are anticholinesterases combined with muscarinic antagonists?
counteract unwanted side effects
Examples of muscarinic antagonists.
glycopyrrolate / atropine
Examples of Anticholinersterases
Neostigmine, Edrophonium, Sugammadex
How is Neostigmine typically administered?
Mixed with glycopyrrolate
What occurs first when Neostigmine is mixed with atropine?
Atropine effects
How is Edrophonium prepared?
Mixed with atropine
What is Sugammadex used for?
reverse any level of paralysis from rocuronium or vecuronium
How do depolarizing neuromuscular blockers work?
They stimulate the ANS and act like acetylcholine.
What are the contraindications for depolarizing neuromuscular blockers?
Involuntary muscle contractions (fasciculations) that result in flaccidity and triggering malignant hyperthermia (MH)
What is Succinylcholine/Anectine used for?
Intubation and induction
What is the duration of Succinylcholine/Anectine?
4-10 min
How is Succinylcholine metabolized?
By pseudocholinesterase (longer than acetylcholinesterase)
Is there a reversal agent for Succinylcholine?
No
What are the adverse reactions to Succinylcholine?
Decreased heart rate, increased intracranial pressure, increased potassium, oxygen depletion.
What are the contraindications for Succinylcholine?
Family history of malignant hyperthermia, glaucoma, and degenerative neuromuscular disorders.
How is induction achieved in children?
Inhalation
What are barbiturates used for induction?
Brevital, which is a short-acting anesthetic
What sedatives/hypnotics are used for induction?
Propofol and etomidate
What is the nurse’s responsibility during induction?
Remain with the patient, manage stress response (increased BP & HR), limit sensory stimulation, and know the location of the emergency/difficult intubation cart/trach tray
How should asthmatic patients be managed during induction?
Induce deeper anesthesia and use a bronchodilator prior to induction
Why is malignant hyperthermia (MH) a concern during induction?
Signs and symptoms appear from anesthesia gases
Who are at risk for aspiration during induction?
Patients with GERD, trauma, pregnancy, obesity, and those requiring awake intubation
What technique is used to reduce aspiration risk during induction?
Applying cricoid pressure
What is the narrowest part of a child’s airway?
cricoid cartilage
How is inhalation anesthesia administered?
face mask, endotracheal tube (ET), or laryngeal mask airway (LMA) mixed with CO2
What are the risks associated with Halothane?
Triggers MH
What can Halothane cause if combined with epinephrine?
arrhythmias
What is the strongest inhalation agent?
Halothane
What are the characteristics of Nitrous Oxide (N2O)?
It’s nonflammable, nonhalogenated, provides rapid induction and quick recovery, and is safe in MH patients
What are the potential effects of Nitrous Oxide (N2O)?
poor muscle relaxation, hypoxia, and support combustion like oxygen
What effects does nitrous oxide have on the cardiovascular system?
None
What is the purpose of Desflurane/Suprane?
used for patients with increased intracranial pressure (ICP)
What are the potential effects of Desflurane/Suprane?
glycosuria and proteinuria
What are the characteristics of Desflurane/Suprane in terms of onset and offset?
Fastest onset / offset of inhalation drugs
What are common side effects of Desflurane/Suprane?
Coughing and a smell resembling rubber
How does Isoflurane/Forane affect heart rate?
Slows
How is Isoflurane/Forane metabolized?
Liver
Is Isoflurane/Forane safe in patients with renal disease?
Yes, not metabolized by kidney
What are the potential effects of Isoflurane/Forane?
Respiratory depression and vasodilation
What happens if Isoflurane/Forane is used with a pneumatic tourniquet?
Increased ICP
What is the significance of Sevoflurane in pedatrics?
Agent of choice due to rapid onset / offset
When is Ethrane contraindicated?
Seizures
What is the composition of Propofol/Diprivan?
Contains soybean oil and lecithin
What is the dosage range for Propofol/Diprivan?
1.0-2.5 mg/kg
What are the effects of Propofol/Diprivan?
Respiratory and cardiac depression
What is the onset of action for Propofol/Diprivan?
rapid
What type of anesthesia does Ketamine/Ketalar provide?
dissociative anesthesia (patient is awake but unaware)
What are the effects of low-dose Ketamine/Ketalar?
does not cause respiratory depression, hallucinations, or delirium
What is the onset of action for Ketamine/Ketalar?
rapid
What are the contraindications for Pentothal/Thiopental Sodium?
chronic renal or hepatic disease
What are the effects of Pentothal/Thiopental Sodium?
decreased arterial pressure and cardiac output
What is the mechanism by which Pentothal/Thiopental Sodium protects the brain?
sedative-hypnotic properties
How long does Zofran/Ondansetron last?
12-24 hr
How long does Reglan/Metoclopramide last?
6 hr
What is the purpose of Scopolamine/Hyoscine before surgery?
placed behind the ear as a sedative
What is the mechanism of action of Prilosec/Omeprazole?
proton pump inhibitor that prevents the release of gastric acid
What is the dosage of Prilosec/Omeprazole?
60mg
How quickly does Protonix/Pantoprazole work?
20min
What is the concentration of IV Protonix/Pantoprazole?
4mg/mL
What is the indication for Adenosine/Adenocard?
increasing heart rate and restoring normal sinus rhythm (NSR) by causing brief asystole
What is the dosage of Adenosine/Adenocard?
6mg bolus every 1-2 min
What is the action of Amiodarone/Cordarone?
class II antiarrhythmic used for life-threatening ventricular arrhythmias
How is Amiodarone/Cordarone administered?
intravenously (IVP) as 300mg in 20-30mL of normal saline (NS) or D5W, followed by a repeat dose of 150mg every 3-5 min.
What is the purpose of Atropine/Atropen?
anticholinergic agent used for bradycardia, asystole, and AV node block
What is the dosage of Atropine/Atropen?
1mg every 3-5 min
When is Epinephrine/Adrenaline administered?
adrenergic emergency, asystole, pulseless ventricular tachycardia, asthma/allergic reactions
What are the routes of administration for Epinephrine/Adrenaline?
endotracheal (ET) inhalation, subcutaneous (subq), intramuscular (IM), or intravenous (IV) routes
What is the dosage of Epinephrine/Adrenaline?
1mg every 3-5 min
What is the action of Vasopressin/Vasostrict?
increases blood pressure by constricting blood vessels and restricts renal excretion while increasing peristalsis (ADH)
What is the dosage of Vasopressin/Vasostrict?
40 units intravenously (IVP)
How does Nitroglycerin/Nitrostat work?
increases coronary blood flow by dilating arteries, thereby reducing blood pressure and relieving angina
What is the purpose of Lasix/Furosemide intraoperatively?
reduce intracranial pressure (ICP)
What is the indication for Mannitol/Osmitrol?
increased intracranial pressure (ICP) and intraocular pressure (IOP)
What is the action of Dilantin/Phenytoin?
prevent and treat seizures after head trauma
What is the action of Dantrolene/Revonto?
blocks the accumulation of calcium in skeletal muscles, primarily used for malignant hyperthermia (MH)
What is the administration method for Dantrolene/Revonto?
via central line as a 2-3mg/kg IV bolus
How should Ryanodex be reconstituted?
5mL of non-bacteriostatic water, used within 6 hours
Why should you add epinephrine to local anesthesia?
delay absorption for post op pain
What is the effect of Dopamine/Intropin on blood pressure?
Decreases
What is the effect of Dopamine/Intropin on cardiac output?
increases
What is the therapeutic indication of Dopamine/Intropin?
renal failure
What is the purpose of including Mannitol with Dantrolene?
increase renal function
What are the four kinds of brachial plexus blocks?
Interscalene
Supraclavicular
Infraclavicular
Axillary
What is the complication of an interscalene block?
Horner’s syndrome
What is Horner’s syndrome?
Disrupted nerve pathway on one side from the brain to the face / eye
What are symptoms of Horner’s syndrome?
Drooping eyelid, little / no sweating on affected side, smaller pupil
What is the complication of a supraclavicular block?
pneumothorax
What is the complication of an infraclavicular block?
short duration
What is the complication of an axillary block?
hematoma
accidental vascular injection
What is a Bier Block or Intravenous Regional Anesthesia (IVRA)?
regional anesthesia technique used for hand procedures
What is the typical duration of cases for which Bier Block is used?
Cases lasting 20-60 min
What is the primary advantage of Bier Block?
provides a bloodless surgical field
How quickly does Bier Block typically onset?
less than 5 min
What is the sequence of steps for performing a Bier Block?
- Exsanguinate the extremity.
- Apply a tourniquet.
- Inflate the proximal cuff.
- Inject local anesthesia and remove the IV.
- Perform the procedure.
- Deflate the cuff.
What surgical areas are well suited for a Femoral Block?
anterior thigh or knee, such as quadriceps tendon repair
In addition to surgery, what other purpose can the Femoral Block serve?
postoperative pain management after femur or knee surgery
Why is aspiration before injection important in neuraxial anesthesia?
prevents accidental intravascular injection
Which medication commonly causes LAST?
bupivacaine used in epidural procedures
What should be monitored during neuraxial anesthesia?
Sensory block and autonomic function of nerve roots and spinal cord.
What precautions should be taken while positioning or transferring patients during neuraxial anesthesia?
Careful positioning for proper body alignment and avoiding rapid changes to prevent hypotension.
When does motor function typically return compared to sensory functions during neuraxial anesthesia?
Motor function returns before sensory function
What factors should be considered before administering neuraxial anesthesia?
History of spinal malformation, previous spinal surgery, psychological status, and high skill level required in pediatric patients
What are the contraindications for neuraxial anesthesia?
Anticoagulation, increased intracranial pressure (ICP), septicemia, skin infection at insertion site, pre-existing neurological disorders (such as MS), cancer of brain or spinal cord, and patient refusal
What complications are associated with neuraxial anesthesia?
Respiratory depression, bladder distention, hypotension, and post-dural puncture headache
What can cause respiratory depression in epidurals?
sedation used with regional anesthesia or high placement affecting phrenic nerve
How do you treat bladder distension during an epidural?
offer void or catheter
What kind of needles are used in spinal anesthesia and why?
pencil point (not beveled)
prevent accidental dural puncture
What are some noninvasive treatments for post-dural puncture headache?
HOB flat, fluids, analgesics, caffeine, sumatriptan
Where is medication injected in peridural/epidural/caudal anesthesia?
epidural space
For what purpose can peridural/epidural/caudal anesthesia be used?
postoperative pain relief
What is a characteristic of peridural/epidural/caudal anesthesia in terms of duration?
Longer duration is achievable
In which regions of the body is peridural/epidural/caudal anesthesia commonly administered?
Thoracic / lumbar