ALAT Anesthesia and Analgesia in Laboratory Animals

Question 1

Which of the following is the most commonly used injectable anesthetic combination in laboratory rodents?

Accepted Answer

Ketamine/xylazine

Answer

Propofol/midazolam

Answer

Thiopental/atropine

Answer

Fentanyl/droperidol

Question 2

What is the primary purpose of a pre-anesthetic evaluation in laboratory animals?

Accepted Answer

To assess health status and identify potential anesthetic risks

Answer

To determine the exact mg/kg dose required

Answer

To select the appropriate recovery cage size

Answer

To document the animal's weight for billing purposes

Question 3

Which monitoring parameter most directly reflects cardiovascular function during anesthesia?

Accepted Answer

Heart rate and pulse quality

Answer

Rectal temperature

Answer

Respiratory rate and tidal volume

Answer

Mucous membrane color alone

Question 4

What is the appropriate first response if an anesthetized animal's respiratory rate drops significantly below normal?

Accepted Answer

Administer a reversal agent if available and provide ventilatory support

Answer

Increase the anesthetic concentration

Answer

Wait 10 minutes to determine if it self-corrects

Answer

Immediately euthanize the animal per protocol

Question 5

Which route of administration is most commonly used to induce inhalant anesthesia in small laboratory rodents?

Accepted Answer

Induction chamber followed by nose cone maintenance

Answer

Intravenous injection via tail vein

Answer

Subcutaneous injection

Answer

Intramuscular injection into the hindlimb

Question 6

What does the term 'balanced anesthesia' mean in laboratory animal medicine?

Accepted Answer

Using a combination of agents to achieve anesthesia while minimizing each drug's side effects

Answer

Using equal volumes of two injectable anesthetic agents

Answer

Maintaining equal anesthetic depth throughout all four limbs

Answer

Balancing the anesthesia machine gas flow meter at zero

Question 7

Which reflex test is used to confirm adequate surgical anesthetic depth in a rodent?

Accepted Answer

Pedal withdrawal reflex (toe pinch)

Answer

Corneal reflex

Answer

Righting reflex

Answer

Swallowing reflex