How does positive-pressure ventilation affect cardiac output?
A. There is no effect on cardiac output because positive-pressure ventilation is the act of normal breathing.
B. It decreases intrathoracic pressure, which facilitates venous return to the heart and increases cardiac output.
C. It causes pressure in the chest to decrease, which increases stroke volume and cardiac output.
D. It increases intrathoracic pressure, which decreases venous return to the heart and causes a decrease in cardiac output.
Answer: D. It increases intrathoracic pressure, which decreases venous return to the heart and causes a decrease in cardiac output.
You might also like to view...
Flammable liquids:
A. are extremely volatile. B. are slightly flammable. C. have a flash point at or above 100°F (38°C). D. are grouped together as Class II flammable liquids.
For engagement to occur, it is not necessary to:
a. establish relationships b. receive federal funding c. build trust d. seek commitment from community leaders e. all of the above
hemoglobin A1c test reflects blood glucose levels over what period of time?
A. 1 year B. 6 months C. 3 months D. 1 month E. 2 weeks
A CAM therapy based on the belief that illness and pain occur when Chi (life energy) is blocked as it flows through meridians is ____
A) reflexology B) acupressure C) homeopathy D) biofeedback