BIOC34H3 Lecture Notes - Lecture 4: Ejection Fraction, Hypotension, Pulse Pressure
26 Jan 2018
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Note: atria is being filled with blood but the ventricles aren"t: cycle then repeats with start of phase one and opening of av valves. Pulse pressure: determine pulse pressure by subtracting sp from dp, 40 mmhg on average, linked to hardening of arteries when pulse pressure increases too much, could lead to reduced blood flow and therefore a heart attack. Important to blood pressure regulation, heart rate, stroke volume and many other calculations: since dp has bigger contribution the calculation isn"t simply the average of. Sp and dp: there are 2 main ways to calculate it, when you have sp and dp. 3: when you have pp and dp. 3: map is driving force for blood flow in systemic circulation. 110 mmhg: hypotension is defined as sp/dp of less than 90/60 mmhg. Stroke volume: stroke volume (sv) is the amount of blood pumped in one heartbeat, larger contraction force causes increased stroke volume.
