Chapter 120 - Vomiting and Regurgitation

Question 1

Vomiting or regurgitation: Occurs shortly after ingestion of food

Answer 1

Regurgitation

Question 2

Vomiting or regurgitation: Digested food

Answer 2

Vomiting

Question 3

Vomiting or regurgitation: Bile may be present

Answer 3

Vomiting

Question 4

Vomiting or regurgitation: Nausea often seen

Answer 4

Vomiting (premonitory signs)

Question 5

What is the most significant clinical complication of regurgitation?

Answer 5

Aspiration pneumonia

Question 6

T/F: In the absence of disease, patients with persistent regurg are able to maintain good hydration.

Answer 6

True

Question 7

Regurgitation is more common in what species?

Answer 7

Dogs

Question 8

What is the most common cause of regurg in the adult dog?

Answer 8

Idiopathic megaesophagus

Question 9

Name 6 causes of secondary megaesophagus

Answer 9

a. MG
b. Generalized NM disease
c. Lead toxicity
d. Addisons
e. HypoT
f. Dysautonomia

Question 10

What is the most common cause of drug induced esophagitis?

Answer 10

Doxycycline

Question 11

What does odynophagia mean?

Answer 11

Pain on swallowing

Question 12

What diagnostic is least likely to provide useful information in animals with regurg?

Answer 12

Abdominal ultrasound

Question 13

T/F: Most patients with MegaE secondary to Addison’s have electrolyte changes.

Answer 13

True

Question 14

The canine esophagus is comprised entirely of what type of muscle?

Answer 14

Striated

Question 15

T/F: Metoclopramide and cisapride are smooth muscle prokinetics.

Answer 15

True

Question 16

The vomiting reflex is mediated by what part of the brain?

Answer 16

The vomiting center in the medulla

Question 17

What parts of the GI nervous system stimulate the vomiting center?

Answer 17

Vagal and sympathetic afferent pathways

Question 18

What parts of the brain stimulate the vomiting center?

Answer 18

Vestibular system, Cerebrum, Chemoreceptor trigger zone

Question 19

What does the CRTZ lack that makes this important for the vomiting center?

Answer 19

Lacks a blood-brain barrier, making it sensitive to several common drugs and toxins

Question 20

Name a patient that may develop a hypochloridemic metabolic alkalosis.

Answer 20

Dogs with foreign bodies

Question 21

Name a patient that may develop a metabolic acidosis.

Answer 21

Patient with chronic vomiting

Question 22

What is the most common electrolyte disturbance in the vomiting patient?

Answer 22

Hypokalemia

Question 23

Name some ExtraGI causes of vomiting (12)

Answer 23

a. Uremia
b. Panc
c. DKA
d. Liver disease
e. Peritonitis
f. Pyo
g. Prostatitis
h. Drug or toxin
i. Addisons
j. HyperT
k. Vestibular disease
l. Heartworm disease (cats)

Question 24

T/F: In patients with vomiting, normal bloodwork is more strongly suggestive of extraGI disease.

Answer 24

False