Module 14 Wk 1 Flashcards
(Small Animal Emergencies: Triage and Patient Stabilisation)
Explain how to perform a triage exam
- Stable vs. immediate care (CPA/Shock)
- Based on vital signs- AirwayBreathingCirculation
- Includes brief history (presenting complaint), CPR code status and brief focused physical exam
- Traffic light system Red: Critical Unstable Amber: Urgent/potentially unstable Green: Stable
Explain how to perform a primary survey and concept of ABCDE
- Goal of a primary summary is to identify and stabalise life threatening problems
- ABCDE stands for AirwayBreathingCirculationDemnorEntire body
Explain the difference between a primary and secondary survey
In a primary survey, it’s quick, whereas in a secondary survey, you are doing a full clinical examination, body weight, detailed history, and giving the client an estimation of the visit. In this secondary survey, you want to fully understand the patient’s condition and develop a comprehensive diagnosis and treatment plan.
Describe common emergency stabilisation measures and evaluate their suitability in an individualpatient
Describe options for vascular access in the emergency patient
- IV should be obtained asap in all critically ill patients for fluids and drugs.
- In patients unable to breathe this may need to be delayed to allow for stabiliation in O2 therapy so options include
- Peripheral venous catheter – cephalic/saphenous
- Central venous catheter- jugular
- PICC- peripherally inserted central catheters
- Intraosseous catheter- prone to infection
- Venous cutdown
Describe an emergency database
- PCV/TS
- Blood glucose
- Lactate
- BUN/Creatinine
- Blood smear
- Venous blood gas and electrolytes
(Management of shock)
Define shock
- An imbalance between O2 supply and demand in the cell
Identify different types of shock
- Hypovolaemic
- Haemorrhagic
- Disruptive
- Cardiogenic
- Hypoxic
- Obstructive
- Metabolic
- (overlap of different types of shock)
Recognise the major indications for fluid therapy and identify clinical cases where fluid therapy may be required
The compensatory mechanisms in shock lead to dehydration, volume loss (hypovolemia or blood loss) and 3rd space loss so need fluid therapy to restore circulation and perfusion
T/F Fluid is a goal directed therapy
True - It is a goal directed therapy
What is the fluid rate for dogs?
Dogs: 10-20ml/kg IV
What is the fluid rate for cats?
Cats: 5-10 ml/kg IV
What route would you use when treating a patient with fluids?
- venous access
- intraosseous access - good in puppies or kittens as difficult to get access
What are the two types of fluid you can use?
- hypertonic crystalloids shift fluids into the intravascular space, increasing vascular volume rapidly. Has anti-inflam effects and reduces ICP
- colloids are larger molecules that do not cross the vascular endothelium. They have a high Colloid osmotic pressure, which expands and maintains intravascular volume. For shock, a smaller volume than crystaloids is required. They have controversial benefits.
What are the different types of drugs that help treat shock?
- Vasopressors
- Intropes
- Vitamins can treat oxidative stress.
- steroids
What does a Vasopressors do? What can you treat with them?
They cause vasoconstriction and reduce the intravascular space optimising volaemia. Could treat septic and distributive shock.
What do Intropes do? What can you use them to treat?
They decrease systolic function of the heart. Can use to treat septic shock.
Explain how monitoring of clinical signs, physiological and laboratory data assist in the diagnosis and treatment of shock
It is really important as it gives you an indication of the severity of the shock the patient is suffering from. You should monitor HR, RR, MM colour, CRT, Mentation, Pulses, and extremities (temp).
Discuss common complications which may occur as a result of fluid therapy
- when treating haemorrhagic shock, an excess of fluid will exacerbate bleeding
- when treating obstructive shock, there is a risk of hypervolaemia after correction.
What are the consequences of shock?
- reperfusion injury
- Dilated coagulopathy
- SIRS
- MODS
(Evaluation and Emergency Management of the Trauma Patient - Thoracic trauma)
Describe the major causes of hypoxaemia following an RTA
Outline the various options for management of pneumothorax
The goal is to re-expand the collapsed lung. Along with this we want to improve the venous return and cardiac output. Pleural drainage may be required via thoraconcentesis tube. If unresolved, it may need an exploratory thoracotomy.
Methods of providing supplemental oxygen
- Intubation
- Ventilation
Recognize the clinical manifestations of traumatic brain (primary and secondary) injury and raised Intra-cranial pressure
- Primary Injury is immediate result. This type of injury includes concussion, contusion and laceration resulting in heamatoma formation and brain compression.
- secondary injury is hours or days after trauma. This type of injury is caused by a combination of intracranial and systemic insults leading to neuronal cell death.
- raised intracranial pressure is where the volume of the intracranial contents exceed compensatory mechanisms resulting in brain herniation if not identified and treated.
Describe how you would assess the severity of a TBI
- Level of consciousness
- Brain-stem reflexes (pupil size, PLRs and eye movement)
- Limb movements
- Respiratory pattern
- Blood pressure and heart rate
Describe how you would manage a TBI
- You want to ensure there is adequate oxygenation. You want to avoid and/or correct factors that predispose to secondary brain injury. Along with this you wany to address raised ICP.
What steps would you take if there is clinical eveidence of ICH in your patient?
- Reduce cerebral oedema with hyperosmolar therapy
- Mannitol
- Hypertonic saline (NaCl 7.5%)(2-4 ml/kg IV over 10 minutes)
- Reduce Cerebral Metabolic rate
- Anaesthesia, barbiturate therapy, hypothermia
When using Mannitol and Hypertonic saline to treat Intra-cranial heamorrhage what would the dose and rate be?
- Mannitol 0.5-1 g/kg IV over 20. minutes
- Hypertonic saline - 2-4 ml/kg IV over 10 minutes
(Evaluation and Emergency Management of the Trauma Patient - Acute abdomen Abdominal Trauma)
What is a Heamoabdomen?
- Heamoabdomen - Where there is a precence of heamorrhagic effusion in the peritonial cavity.
What is a uroabdomen?
Uroabdomen - Where there is leakage of ureine into the peritoneal or retroperitoneal. This causes a loss of integrity of the urinary system.
How might a heamoabdomen clinically manifest
With a Heamoabdomen clinically the patient will present shocked/collapsed, having arrythmias/pulse defects.
How might a uroabdomen clinically manifest
With a Uroabdomen the patients bladder may or may not be palpable, urination may or may not be present.
Outline the potential consequences of abdominal trauma and their diagnosis
Sepsis peritonitis - peritonitis resulting from and identifiable source of intraperitoneal infection, typically bacterial in origin and most commonly a result of leakage of the GI tract.
Understand the principles governing the medical management of abdominal trauma.
In both heam and uro medical management is essential before any surgical correction.
Understand the principles governing the surgical management of abdominal trauma.
Surgical management is what comes after medical managment, This is where surgical intervention is used to try solve and explore the trauma.
How would you manage a heamoabdomen?
Initially, you want to manage the shock and control the source of bleeding. Fluid should be hypotensive or low volume. Blood transfusion can aid along with oxygen therapy.
(Imaging the Emergency Patient)
List the main common traumatic injuries.
- Pneumothorax
- Pulmonary contusion
- Pleural effusion (fluid)
- Ascites
- Diaphragmatic rupture
- Fracture/luxations
Whats the difference between over exposed and under exposed?
- Over-exposed is where it is too dark, there is a lack of contrast.
- Under-exposed is where it is too white with too little differentiation.
What are common traumatic lesions to the thoracic wall?
- Diaphragm rupture
- Ribs
- Dislocation of sternum
- Flail chest
What are 3 common intrathoracic traumatic lesions?
- Pneumothorax
- Pulmonary contortion
- Pneumomediastinum- cervical, pharyngeal?
What might you see on a radiograph of a patient who has pneumothorax?
- Heart raised from the sternum
- retraction of lung lobes
- increased lung opacity
- Blebs within the pulmonary tissue
What is the stand-out thing you see on a radiograph of a patient who has tension pneumothorax?
Heart raised from sternum
What is a pulmonary contusion?
It is a bruise on the lung which is the same opacity as soft tissue.
What would you see on a radiograph of a patient with pleural effusion?
- Loss of cardiac silhouette on DV and if very severe you’ll see it on lateral
- Retraction of lung lobes where there is visible soft tissue in plural spaces, outlines of lungs with leaf or scalloped edges.
T/F if pleural effusion is acute lungs will have scalloped edges?
Flase they will have leaf edges.
What can be seen on a radiograph of a patient with a diaphragmatic rupture?
- Abdominal Organs in the thoracic cavity
- Loss of diaphragmatic line
- Increased opacity
- Pleural effusion
What does FAST help detect?
- abdominal fluid
- Pericardial fluid
Describe what you would see on a radiograph of a patient with peritoneal effusion
- Organs not visible
- Loss of serosal detail
- presence of peritoneal fluid
- presence of peritoneal gas
What is GDV?
Gastric dilation and Volvulus is where the stomach is rotated and shaped like a smurf or popeye, and the small intestines are dilated, all causeing functional paralysis of SI.
(Anaesthetic risk and pre-anaesthetic assessment)
Describe the ASA physical status classification system
This is a 5 grade system.
- Grade 1 is a healthy patient
- Grade 2 is described as a mild, fully compensated, systemic disease.
- Grade 3 is where a severe systemic disease functionally affects the patient.
- Grade 4 is where a severe systemic disease is a constant threat to the patients life.
- Grade 5 is a moribund patient that is not expected to survive with or without treatment
Identify groups of patients at increased risk of anaesthetic mortality/morbidity based on signalment
- Age - older animals and very young animals
- Breed - brachycephalic and breeds that have unexpected responses to drugs
- Body weight - increased
Recognize major disease categories which increase anaesthetic risk and explain how these risks could be reduce
- cardiovascular and Respiratory are the main two
These can be reduced by
- Taking a full history
- abnormalities from this?
- can we stabilise these?
- Doing pre-op blood
- if there was anything from this?
- Can we do anything to limit the risk?
(Clinical pharmacology of analegesics)
Whats is the mechanism of Opioid analgesics
They activate opioid receptors to reduce neuronal excitability
What are the effects + side effects of Opioid Analgesics
- analgesic
- sedative
- dysphoria/euphoria
- respiratory depression
- Nausea
- Reduced gut motality
T/F Opiod analgesics have poor oral bioavailability?
True
What would you use opioid analgesics for?
- To relieve pain
- To provide sedation
- To reduce required dose of general ana
- To treat diarrhoea
- To control coughing
What patients would you take caution using opioid analgesics with?
- existing hypoventilaition
- increased ICP