How many liters of oxygen can fit in an E cylinder?
5 causes of hypoxemia... go!
- Decreased FiO2
- V/Q mismatch
- Right to left shunt
- DIffusion Impairment
How many liters of oxygen can fit in an H cylinder?
What is the tank cylinder pressure in E and H oxygen tanks?
Anesthetized patients encounter respiratory depression from anesthetic drugs, so we supplement their oxygen to avoid hypoxemia. What is considered the minimum FIO2?
Minimum FIO2 = 35%
According to the ACVA, how often should you record findings while an animal is under anesthesia?
Every 5-10 minutes
The pressure reduction valve reduces cylinder pressure to a fixed _____ psi
Provides a constant pressure of 50 psi to the flowmeter
What is the main function of the 'pop-off' valve?
limits pressure buildup within the circuit
ALWAYS keep open unless delivering manual, controlled, or assisted ventilation
Gas passing through the oxygen flowmeter is reduced from 50 psi to about ____ psi
What is the SVP for Isoflurane at 20oC?
The check valve prevents transfilling of one tank to another. If this valve breaks, what would happen to the temperature as a result of rapid transfilling?
Temperature would increase
**risk of FIRE**
Would these hoses be used for re-breathing or non-rebreathing systems?
Ocular reflexes are a good indicator of anesthetic depth. The bovine eye rotates __________ during light planes of anesthesia
What are the three most common causes of hypotension under anesthesia?
vasodilation, decreased contractility, and bradycardia
When vasopressors are administered to a patient, what happens to the patient's heart rate?
What is the effect of Atropine on heart rate and blood pressure?
↑ HR & ↑ BP
Following IV injection of atropine, an initial increase in vagal tone may occur and a transient decreased heart rate or heart block can occur. This is followed by the expected increase in heart rate
T/F: With Xylazine, you may observe an initial vasoconstriction and rise in arterial blood pressure followed by a reflex bradycardia
What duration of analgesia do you expect when using butorphanol?
30 mins - 2 hours
Butorphanol is a mixed opioid agonist-antagonist (agonist at kappa receptor and antagonist at mu receptor). It is used for mild to moderate visceral pain, not effective for severe or orthopedic pain.
In what stage of anesthesia are vomiting and swallowing reflexes lost?
T/F: Doppler is used for reliable detection of diastolic pressure
Doppler is used for reliable detection of systolic pressure
What is the approximate duration of action of propofol?
Rapid-acting, ultra-short duration (<20 mins)
What respiratory effects might you expect after administering propofol?
dose-dependent depression & apnea
Always be prepared to assist ventilation
What is the equation you use to calculate proper size of rebreathing bag?
Body weight x Tidal volume x 5
- Normal tidal volume = 10-20 mls/kg
What flow rate is typically used with a non-rebreathing system?
Throughout the entire procedure
T/F: Calcium gluconate 23% and 0.9% NaCl both lower potassium concentration and are used for treatment of hyperkalemia
Both are used for treatment of hyperkalemia, but Calcium gluconate 23% does NOT lower [K+]. It protects the myocardium against the cardiotoxic effects of hyperkalemia and prevents arrhythmias
0.9% NaCl dilutes the high serum [K+]
What is the normal PaO2 range for arterial blood on 100% O2?
What is the most common pathologic arrhythmia in horses?
What is the approximate blood volume (in mL) for a 10 kg dog?
90 mL/kg x 10 kg
What is the approximate blood volume (in mL/kg) for ovines?
What is the normal pH range for arterial blood?
7.35 - 7.45