Lecture 2: Patient evaluation and prep Flashcards
Whose responsibility is it to perform the pre-anesthetic evaluation?
the vet in charge of the patient
What are the required components of the signalment?
Species, breed, age, sex, and reproductive status
In older patients, what is the minimum database of lab testing that should be done?
CBC, CHEM, UA
When is the pre-anesthetic evaluation performed?
Usually the day before or up to 1 week before
What is the ASA category of normal healthy patients?
I
What is the ASA category of patients with mild systemic disease
II
What is the ASA category of patients with severe systemic disease?
III
What is the ASA category of patients with severe systemic disease that is a constant threat to life?
IV
What is the ASA category of moribund patients not expected to survive without surgery?
V
How long would you fast a canine or feline patient before anesthesia?
6-12 hours
How long would you fast small ruminants, calves, and camelids prior to anesthesia?
Food: 12-18 hours
Water: 8-12 hours
How long would you fast an equine patient prior to anesthesia?
4-12 hours
Why is a patient fasted prior to general anesthesia?
- Decrease food and fluid in stomach
- Decrease risk of aspiration
- Distended stomach or rumen impairs ventilation and could lead to hypoxemia and hypercapnia
- in horses, a full stomach could rupture at induction
What are the four general anesthetic concerns?
- Hypotension
- Hypoventilation
- Hypothermia
- Hypoxemia
