Instant Access AAVSB.VTNE.v2026-10-12.q316 Actual Practice Test Engine for Free (Page 30)

Question 141

A new guinea pig owner presents with a male and a female. She would like to breed them. She was advised that they are only about two months of age at present. You discuss the breeding characteristics, behaviors, and concerns of cavies.
All of the following are true, except:

A.Gestation length is 59-72 days (average 64 days)
B.Sows become sexually mature at two months of age
C.Boars can mate between two and three months of age
D.Breeding for the first time after 11 months of age is not recommended because of stiffening of the pubic symphysis

Question 142

Which of the following is a key factor in fecal parasite screening?

A.Number of people who have handled the sample
B.The type of food last eaten by the pet
C.Amount of light to which the sample has been exposed
D.Age of the stool being sampled

Question 143

In Stage 3 anesthesia, which of the four planes is when the animal may require assisted ventilation?

A.Plane 1
B.Plane 2
C.Plane 3
D.None of these. This occurs in Stage 2.

Correct Answer: C

Anesthesia has been described as a series of four stages with specific reflexes and/or signs:
Stage 1: The period between administration of an anesthetic and loss of consciousness.
Respiratory efforts change as anesthesia deepens. In Stage 1, the animal is awake and respiration may be quite rapid due to the excitation of being handled. It is evenly apportioned between the chest and abdomen and is quite regular.
Stage 2: The period after the loss of consciousness, which may include actions such as uncontrolled movement, delirium, vocalization.
Muscle tone decreases from a maximum during Stage 2 all the way through Stage 3. Jaw tone is a good indication of muscle tone. Breathing is still evenly apportioned between chest and abdomen but is less regular and breath-holding may occur.
Stage 3: The level at which surgery can be performed.
Shine a light in the eye and the pupil constricts (present at the start of Stage 3 and starts to decrease and will be absent by about the middle of Stage 3). Touch the corner of the eye or the cornea and the animal blinks (disappears early in Stage 3). Simulation of the larynx will cause the animal to swallow. The stimulation may be from outside, for example, an attempt to pass an endotracheal tube. Or the stimulation can be internal, for example, the presence of secretions at the larynx. This is a mechanism to prevent accidental aspiration of fluids into the lungs. This reflex will disappear early in Stage 3. Early in Stage 3, breathing is regular with equal contributions from chest and abdomen. As anesthesia deepens, breathing becomes shallower and more predominantly abdominal. Late in Stage 3, it becomes irregular and in Stage 4, it will stop.
Stage 3 anesthesia is divided into three planes:
*Plane 1: "Light" anesthesia - the animal still has blink and swallowing reflexes, and regular respiration.
*Plane 2: "Surgical" anesthesia - the animal has lost blink reflexes, pupils become fixed and respiration is regular.
*Plane 3: "Deep" anesthesia - the animal starts losing the ability to use the respiratory muscles and breathing becomes shallow; may require assisted ventilation.
Stage 4: Anesthetic crisis! Respiratory arrest and death from circulatory collapse are imminent.
Note: Some systems may divide Stage 3 into four planes, with plane 3 and 4 deeper than ideal.

Question 144

Mandibular brachygnathism is also known as which of the following?

A.Maxillomandibular asymmetry
B.Neutroclusion
C.Mandibular distoclusion
D.Mandibular mesioclusion

Question 145

In the nonpharmacologic management of pain, which choice is not a benefit of electrical stimulation devices such as TENS and NMES?

A.Enhanced lymphatic flow
B.Reduced edema
C.Provides pain control
D.Improved wound healing

Question 141

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