- Which of the following most correctly matches the location and expected pressures in systole and diastole in a healthy animal?
a. Right ventricle: 25/0 mmHg, Pulmonary artery: 120/80 mmHg
b. Left ventricle: 25/0 mmHg, Left atrium: 10/5 mmHg
c. Right atrium: 5/0 mmHg, Pulmonary artery: 25/10 mmHg
d. Aorta: 120/80 mmHg, Right ventricle: 120/5 mmHg
- A patient with an arrhythmia is given a drug that slows the speed of conduction of the electrical impulse through the heart. Which of the following best describes this action?
a. Negative dromotropy
b. Positive dromotropy
c. Negative lusitropy
d. Positive lusitropy
- Which number correctly correlates with the timing of an S4 sound in the cardiac cycle?
a. 1
b. 2
c. 3
d. 4
- Which number is pointing to the location of mitral valve closure?
a. 1
b. 2
c. 3
d. 4
- A dog presents to the clinic with a heart rate of 130 beats/min, end systolic volume of 45mL, and stroke volume of 32mL. What is the approximate ejection fraction?
a. 71%
b. 58%
c. 42%
d. 28%
