• The mean arterial pressure is the average pressure throughout the cardiac cycle.
•  But it is not the average of systolic and diastolic blood pressure ,because the duration of systole and diastole are different 
• The duration of systole is about 0.27ms
•  The duration of diastole is about 0.53 ms 
• Mean arterial pressure is determined by using the following equation 

•  Mean arterial pressure = (CO × SVR) × CVP

• CO = cardiac output

• SVR= systemic vascular resistance

• CVP= central venous pressure 

• But in practice MAP is determined by using the following equation 

• MAP = Diastolic Blood Pressure (DBP )+ 1/3 Pulse Pressure 

• Pulse pressure = Systolic Blood Pressure – Diastolic Blood Pressure  

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