What has the greatest influence on preload?
A.
Blood pressure
B.
Contractility
C.
Fluid volume
D.
Heart rate
ANS: C
Preload is equivalent to venous blood return to the atria and end diastolic volumes of the heart. This is directly influenced by fluid volume. Heart rate and contractility have some influence, but they are not the major determinants of preload. Blood pressure is not a direct influence on preload.
You might also like to view...
A client with AD begins to tell the nurse about his early-married life. The nurse should
a. assess orientation to time and place. b. distract the client from this activity. c. encourage the client to talk about recent memories. d. listen to his stories.
The nurse is working with the client to help him learn the DASH diet to lower his blood pressure. Which nutrient is very effective in lowering blood pressure when someone follows the DASH diet?
A) Potassium B) Sodium C) Glucose D) Phosphorus
An important consideration in health care is
A. preserving life at all costs. B. withholding expensive care from the elderly. C. maintaining and enhancing quality of life. D. humanizing care only for young patients.
All of the following are advantages of air transport over ground except
A) Time B) Cost C) Medical expertise during transport D) Communication