A client has been experiencing increasing fatigue in recent months, a trend that has prompted an echocardiogram. Results of this diagnostic test suggest that the client's end-diastolic volume is insufficient
Which of the following parameters of cardiac performance will directly decrease as a result of this?
A) Inotropy
B) Cardiac contractility
C) Preload
D) Afterload
Ans: C
Feedback:
Preload is the volume of blood stretching the heart muscle at the end of diastole and is normally determined mainly by the venous return to the heart. Afterload represents the force that the contracting heart muscle must generate to eject blood from the filled heart. Cardiac contractility, or inotropy, is the contractile performance of the heart.
You might also like to view...
What type of headache is characterized by mild-to-moderate pain, is usually bilateral, and lasts 30 minutes to 7 days but is not aggravated by physical activity and is not associated with nausea or vomiting?
A. Headache caused by excessive pressure B. Headache caused by hemorrhage C. Migraine headache D. Episodic tension-type headache (ETTH)
Match each vitamin with its name.
a. Cholecalciferol b. Retinol, beta carotene c. Phytonadione d. Tocopherol e. Ascorbic acid 1. Vitamin A 2. Vitamin C 3. Vitamin E 4. Vitamin K 5. Vitamin D
The external appendages on the sides of the head that are usually referred to as ears are known as ________
Fill in the blank(s) with correct word
Which of the following is NOT a characteristic of aerobic exercise?
a. It utilizes rhythmic body movements. b. It utilizes small muscles in repetitive movements. c. It forces the heart to pump at a rate above its resting rate. d. It requires a sustained elevation of the body's utilization of oxygen.