How can I estimate stroke volume? - stroke volume average
I am a poster project for the honor of anatomy, and get 10 extra points (you have), if I can not understand what I mean stroke volume after an activity to calculate the heart rate. I know that the volume stroke average, while I am at rest, is 80 ml. So, how can I assume that has increased in my heart?
Sunday, January 31, 2010
Stroke Volume Average How Can I Estimate Stroke Volume?
2 comments:
The stroke volume is determined (approximately) for blood pressure, heart rate did not. Minute volume of heart rate affected because the stroke volume times heart rate. I takes about an estimate of stroke volume 1.75 * pressure difference. The pulse pressure is determined by the blood pressure. This is the systolic minus diastolic pressure. 120/80 blood pressure usually produces a pressure difference of 40 (120-80 = 40). 1.75 * 40 = 70. This blood pressure, we can estimate the stroke volume of 70ml for each heartbeat. The volume of the protocol for that person when the heart rate 80 5600ml (70 * 80 = 5600) is.
Summary: (systolic - diastolic) * 1.75 = estimate of stroke volume
You can try to manipulate the equation:
CO = HR x SV
The production of CO = cardiac
HR = heart rate
SV = stroke volume
- An increase of increased emissions of CO = HR
- Increased SV = increase in CO
So, if you know or can one of the ranges should be determined by others in a position to calculate SV.
In addition, to increase SV, one of the following circumstances:
There is an increase in systemic vascular resistance
increased preload
decreased afterload
increases contractility
Post a Comment