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Practical Physiology
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Measurement of Blood
Pressure In Man
PreLabDr Sherwan Shal 2008
Switch off your Mobile phones PLZ!!
I want to hear NOTHING !!!
Main Methods• Direct :
More accurate, but complicated.• Indirect:
Less accurate, easy to perform, sufficient.
Instruments (Sphygmomanometer)
1. Mercurial: Best, reliable, easy to mend, but large and heavy in weight.1. Aneroid: less reliable, easy to handle and
small and light in weight.2. Electronic: easy to use, less reliable.
Mercurial Sphygmomanometer
Aneroid Sphygmomanometer
Electronic sphygmomanometer
Remember ; Pain and fear raise your BP !!
Methods For BP Estimation• Palpatory:
Using only sphygmomanometer.• Auscultatory Method:
Using Sphyg. + Stethoscope.
BP Measurement• "Blood pressure"– Systolic over diastolic– About 120/80 mmHg
• Sphygmomanometer– "Estimate of pressure"– Korotkoff sounds
Notes• If a vessel is completely blocked:
No flow, no pulse and no sound.• If completely opened:
There is flow, there is pulse but no sound.• If the artery is partially closed (obstructed) then:
There is flow, pulse and sound.• Sound ONLY when there is partial obstruction
Stethoscope
Video of the BP Measurement
Click Me To See More
Normal Blood Pressure• Depend on age and other factors:• Young adult:• Systolic 100-130 mmHg / Diastolic 60-90 mmHg• Children: Systolic up to 100 and Diastolic upto 60 is normal.• Elderly: up to 130/90 mmHg ( Increased because of
atherosclerosis)• Age + 100 is accepted for systolic , so , if some one is 50
years then systolic of 150 mmHg is normal. ( Diastolic upto 90 mmHg)
• Pulse pressure = Systolic–Diastolic• Mean arterial pressure (MAP) = Diastolic +
1/3 pulse p
Sport and Exercise
Good Diet Hygiene