What factors affect stroke volume?
What will be an ideal response?
Stroke volume is determined by the degree of ventricular filling when the heart is relaxed (preload), the pressure against which the ventricle must pump (afterload), and the myocardium's contractile state (contracting or relaxing).
You might also like to view...
The nurse is assessing a patient's environment and its impact on outdoor activity and notes that the child rarely plays outside. Which is true regarding the indoor environment?
a. Indoor environments protect the patient from toxics chemicals. b. Indoor activity is sometimes a result of unsafe outdoor conditions. c. Indoor activity decreases the risk of respiratory illness. d. Indoor lifestyles reduce the risk for sedentary behaviors.
During an initial assessment by the nurse, a patient's blood pressure measures 160/90. When should the patient be instructed to have a follow-up assessment of his or her blood pressure?
A) In 2 years B) In 1 year C) Within 1 month D) Immediately
The nurse is explaining the preparation needed for a positive emission tomography (PET) scan. What should these instructions include?
1. Only be allowed to drink water the morning of the test 2. Be given a mild sedative 1 hour before the test 3. Have an intravenous line inserted just before the test. 4. Need to drink several glasses of contrast media
During a routine physical examination, an older patient reports having problems falling asleep at night despite engaging in vigorous activities to become tired in the evening. How should the nurse respond to the patient?
1. "You should vary your routine each day." 2. "You should time activities to end within an hour of bedtime." 3. "Exercise is recommended, but it should not be done closer than 3 hours to bedtime." 4. "Lighten your exercise routine in the afternoon; concentrate exercise toward the morning hours."