What is Mean Blood Pressure?

• It is the average blood pressure during a single cardiac cycle.
• It can be determined from the formula MAP = (CO X SVR) + CVP where CO is cardiac output, SVR is systemic vascular resistance and CVP is central venous pressure.
• At nomal heart rate, it can be estimated as MBP = DBP+ 1/3 PP

(Mean blood pressure = Diastolic blood pressure + 1/3 Pulse pressure,
PP = SBP- DBP)

• At higher heart rate, MAP is the arithmetic mean of systolic and diastolic blood pressure
• The regional blood flow or the organ perfusion depends on MBP
• Normal ranges between 95-100 mmHg.
• MAP greater than 60 mmHg is enough to sustain the perfusion of organs