NUR 254 CV concepts

NUR 254 CV concepts
1. What is an S3 heart sound?
Answer
Ventricular gallop (extra sound heard after S2)
2. What is an S4 heart sound?
Answer
Arial gallop (extra sound heard before S1)
3. How is stroke volume determined?
Answer
By preload, afterload, and contractility
4. How is cardiac output determined?
Answer
Stroke volume x Heart Rate
5. What does cardiac output tell us?
Answer
If the heart is pumping correctly
6. What is contractility?
Answer
Heart's ability to squeeze
7. What is the relationship between stroke volume and heart rate?
Answer
They are directly inverse (one goes up, the other goes down)
8. What med is given to increase contractility?
Answer
Digoxin (digitalis)