help 1, 2, & 3! 160 RK 15 Exercise 120 80 Control 40 0 50 LV Volume (mL) 100 150
ID: 3477878 • Letter: H
Question
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1, 2, & 3!
160 RK 15 Exercise 120 80 Control 40 0 50 LV Volume (mL) 100 150 Directions List all of the changes from control you see above (due to exercise) and their possible causes Note that some changes may have more than a single cause and even involve mechanisms not displayed on this graph! You should list as many logical causes of each change as possible. Please organize your answer into 3 separate lists; 1) effects causing changes on the right on the loop 2) effects causing changes on the left of the loop, and 3) effects causing changes to the height of the loop.Explanation / Answer
Answer
from the graph the right loop indicates End-systolic pressure-volume.
The left loop indicates End diastolic pressure-volume
The height of loop indicates Ejection period
1. changes in right loop are
right loop means the maximal pressure that is developed by the ventricle at any given LV volume. the changes affect the right loop are preload, afterload, and heart rate. The ESPV becomes steeper and shifts to left and increases cotractility. The ESPVR becomes flatter and shifts to the right and decreases contractility.
2. changes in left loop
it indicates the End diastolic pressure-volume changes. it is the passive filling curve for the ventricle. during which the ventricle are filled blood to delelop pressure. any change in this leads to decreased cardiac output.
3. height of loop is ejection loop.
here it start to eject the blood and the point in which ventricular pressure just exceeds aortic pressure. increased pressure reflects the pressure existing in the aorta at the onset of ejection and is called the diastolic blood pressure (DBP).
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