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NUR 254 CV concepts
- What is an S3 heart sound?
Answer Ventricular gallop (extra sound heard after S2)
- What is an S4 heart sound?
Answer Arial gallop (extra sound heard before S1)
- How is stroke volume determined?
Answer By preload, afterload, and contractility
- How is cardiac output determined?
Answer Stroke volume x Heart Rate
- What does cardiac output tell us?
Answer If the heart is pumping correctly
- What is contractility?
Answer Heart's ability to squeeze
- What is the relationship between stroke volume and heart rate?
Answer They are directly inverse (one goes up, the other goes down)
- What med is given to increase contractility? 1 / 2
Answer Digoxin (digitalis)
- (T/F) The better the contractility the higher the stroke volume.
Answer True
- What is preload?
Answer How much volume is going into the left atrium
- What is afterload? What is another name for afterload?
Answer How much pressure the left ventricle has to overcome to get out of the heart (also known as systemic vascular resistance - SVR)
- (T/F) If afterload is decreased then stroke volume will decrease.
Answer False (stroke volume will increase)
- What is given to decrease afterload?
Answer Vasodilator
- What is given to increase afterload?
Answer Vasoconstrictor
- What is stroke volume?
- / 2
Answer How much blood is ejected with each heartbeat
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