32 Questions
What is the approximate risk of death for healthy cats undergoing anesthesia?
0.1%
What is the approximate risk of death for unhealthy dogs undergoing anesthesia?
1.3%
What is the common cause of death in small animals during anesthesia?
Cardio-respiratory causes
When do the majority of deaths occur in equine patients post-anesthesia?
Immediately after recovery
What is the approximate risk of death for healthy horses undergoing anesthesia?
1%
What is the approximate risk of death for sick rabbits undergoing anesthesia?
7%
What is the rationale for pre-anesthetic blood testing?
To detect underlying health issues that may affect anesthesia
What is the ASA physical status classification system used for?
To classify patients based on their overall health status
Which group of patients is at increased risk of anesthesia mortality/morbidity based on signalment?
Geriatric patients
What are some of the factors that can affect patient safety during anesthesia?
Patient's underlying health conditions
What is the ASA grade for a patient with uncontrolled diabetes and anaemia?
ASA 3
What does the addition of 'E' to an ASA grade (e.g. 4E) designate?
An emergency case
What is the minimum pre-anaesthetic blood test profile recommended for very young animals or emergency cases?
PCV/Total protein, Urea/Creatinine, Electrolytes, Glucose
What are the major disease factors influencing anaesthetic risk based on?
All body systems
What does the delivery of oxygen depend on during anaesthesia?
Cardiac output, blood oxygen content, oxygen saturation, haemoglobin concentration
What is promoted by a pre-anaesthetic assessment?
A logical approach to anaesthetic choices
What does ASA 5 designate?
Moribund patient, not expected to survive >24hrs with or without treatment
What is the aim when considering an animal with renal disease for anaesthesia?
Maintain blood pressure under anaesthesia so renal perfusion remains adequate
What are examples of injuries that animals may present with?
Fractures/Dislocations, Wounds, Haemorrhage, Organ rupture
What is the impact of anaesthesia on older animals?
Greater cardiorespiratory impact
What is the approximate risk of death for healthy horses undergoing anesthesia?
1%
What is the aim when considering an animal with renal disease for anesthesia?
To minimize perioperative stress
What does ASA 5 designate?
Moribund patient not expected to survive without the operation
What is promoted by a pre-anaesthetic assessment?
Minimizing patient stress
What is the rationale for pre-anesthetic blood testing?
To assess organ function and detect underlying disease
What is the impact of anaesthesia on older animals?
Reduced physiological reserves
What is the approximate risk of death for healthy horses undergoing anesthesia?
1 in 10,000
What is the common cause of death in small animals during anesthesia?
Uncontrolled heart failure
What is promoted by a pre-anaesthetic assessment?
Anticipation of complications
What is the aim when considering an animal with renal disease for anaesthesia?
Maintain blood pressure under anaesthesia
What is the approximate risk of death for sick rabbits undergoing anesthesia?
1 in 1000
What does the delivery of oxygen depend on during anaesthesia?
All of the above
Study Notes
Anesthesia Risks
- The approximate risk of death for healthy cats undergoing anesthesia is not specified.
- The approximate risk of death for unhealthy dogs undergoing anesthesia is not specified.
- The common cause of death in small animals during anesthesia is not specified.
- The majority of deaths in equine patients occur post-anesthesia.
- The approximate risk of death for healthy horses undergoing anesthesia is not specified.
- The approximate risk of death for sick rabbits undergoing anesthesia is not specified.
Pre-Anesthetic Testing
- The rationale for pre-anesthetic blood testing is to assess the animal's overall health before undergoing anesthesia.
- The ASA physical status classification system is used to evaluate the patient's physical health and determine the level of anesthesia risk.
ASA Classification
- The ASA grade for a patient with uncontrolled diabetes and anaemia is ASA 4.
- The addition of 'E' to an ASA grade (e.g. 4E) designates emergency surgery.
- ASA 5 designates a patient who is moribund and not expected to survive without surgery.
Anesthesia Considerations
- Factors that can affect patient safety during anesthesia include age, size, and underlying health conditions.
- The delivery of oxygen during anesthesia depends on the patient's respiratory and cardiovascular function.
- A pre-anesthetic assessment promotes the identification of potential risks and allows for the development of an anesthesia plan tailored to the patient's needs.
- The aim when considering an animal with renal disease for anesthesia is to minimize the risk of kidney damage.
- Injuries that animals may present with include trauma, fractures, and wounds.
- Anesthesia can have a significant impact on older animals, particularly those with underlying health conditions.
- The major disease factors influencing anesthesia risk are based on the patient's overall health and underlying medical conditions.
Test your knowledge of anaesthetic risk assessment in veterinary patients with this quiz. Assess your understanding of the ASA physical status classification system and strategies to minimize risk. Perfect for veterinary students and professionals.
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