Measuring blood pressure. How it works:

 

#How It Works:

1. Cuff Inflated – Artery Closed

The cuff is pumped up to stop blood flow in the arm. You hear nothing through the stethoscope.

2. Cuff Pressure Drops – Artery Opens Slightly

Air is slowly released. When blood starts to squeeze through, it makes a tapping sound (called Korotkoff sounds).

→ First sound = Systolic pressure (top number)

3. Cuff Pressure Drops More – Artery Fully Open

Blood flows smoothly again and the sound disappears.

→ Last sound = Diastolic pressure (bottom number)

 

#Main Tools:

• Sphygmomanometer (blood pressure device) includes:

• Gauge: Shows the pressure in mmHg.

• Bulb: Pumped by hand to inflate the cuff.

• Valve: Releases air slowly to lower the pressure.

• Cuff: Wrapped around the upper arm and inflated to squeeze the artery.

• Stethoscope: Used to listen to blood sounds in the arm.

 

Body Parts Involved:

• Heart: Pumps blood through the body.

• Brachial artery: Main artery used for measuring blood pressure.

• Radial & Ulnar arteries: Branch from the brachial artery but not directly used during this measurement.

 

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