Describe the Sphygmanometer?



Describe the Sphygmanometer?..

Answer / gulshan kumar

Sphygmanometer:-It is an apparatus for measuring the blood pressure. By blood pressure is meant the pressure of the blood in arteries and specifically large artery of the arm.

The pressure obtaining during contraction of the heart is known as the ‘Systolic pressure’. The pressure occurring during relaxation is called ‘diastolic’. In a normal person the average Systolic pressure is equal to 220 mm, column of mercury and the average diasol pressure is that due to 80mm, of mercury. The sphygmomanometer consists of a U-tube manometer containing mercury. A hollow, air-tight rubber cuff is wrapped around the upper arm of the patient. Two rubber tubes communicate with the interior of the cuff. One of the tubes ends in a hollow rubber bulb and the other is connected to the monometer. A millimeter scale is fixed vertically alongside the limbs of the manometer. To measure blood pressure, the cuff is inflated till the pulse at the wrist just disappears. Next air pressure in the cuff is decreased. Blood now runs through the artery and a rustling sound is heated in the stethoscope. The reading of the top mercury columns gives the ‘systolic’ pressure. The pressure in the cuff is now released further when ultimately the sound of blood rushing through the artery disappears. The reading of the column of mercury at this time gives the ‘ diastolic’ pressure. These readings show whether the patient is suffering from high blood pressure(hypertension) or low blood pressure i.e. hypotension

Is This Answer Correct ?    0 Yes 0 No

Post New Answer

More General Physics Interview Questions

What large machine, which came on line in the summer of 2000 at the department of energys brookhaven national lab, is the world's highest energy ion collider:

0 Answers  


How fast can a shadow move ? If a moth fly's in front of a very bright room temperature light powerful enough to light up Saturn like the sun could it's shadow move faster then light if there was no light diffusion.

0 Answers   ME,


a car is travelling at 72kmph, and if that car slows down to 60kmph it takes an extra 1 hour to cover that same distance. at 72kmph, how long did it take for the car to cover that distance?

2 Answers  


Which is the sound wave that is below the human hearing?

0 Answers  


whether man or women came first on earth

3 Answers  






Explain why is there more friction when you push an object than when you pull it?

0 Answers  


Why mercury rises in a barometer ?

2 Answers  


How can it be proved that the strength of the North and South poles of the magnet is same ?

2 Answers  


What is Potassium Hydroxide ?

1 Answers  


What is Heat ?

1 Answers  


Will a dc motor actually produce voltage if it is spun in reverse?

0 Answers  


Why are morning and evening less warm than noons ?

4 Answers  


Categories