Simple Clues to Your Heart

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Some standard and simple techniques provide your doctor with the first clues to your heart's function.

Feel your pulse

Your doctor feels your pulse in order to check your heart's rate, rhythm and regularity. Each pulse matches up with a heartbeat that pumps blood into the arteries. The force of the pulse also helps evaluate the amount (strength) of blood flow to different areas of your body.

You can tell how fast your heart is beating (heart rate) by feeling your pulse. Your heart rate is the amount of times your heart beats in one minute.

To measure your pulse, you need a watch with a second hand.

  • Place your index and middle finger of your hand on the inner wrist of the other arm, just below the base of the thumb.
  • You should feel a tapping or pulsing against your fingers.
  • Count the number of taps you feel in 10 seconds.
  • Multiply that number by 6 to find out your heart-rate for one minute
    (pulse in 10 seconds x 6 = ____ beats per minute)

When feeling your pulse, you can also tell if your heart rhythm is regular or not.

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Listen to your heart

Your doctor listens to your heart with the aid of a stethoscope. The opening and closing of your valves make sounds ("lub dub") known as the heart sounds. The doctor can evaluate your heart and valve function and hear your heart's rate and rhythm by listening to your heart sounds.

Check your blood pressure (BP)

Blood pressure is the force or pressure exerted in the arteries by the blood as it is pumped around the body by the heart. It is recorded as two measurements:

  • Systolic pressure: pressure in the arteries during the period of the heart's contraction (the higher number)

  • Diastolic pressure: pressure in the arteries when the heart is relaxed, between heartbeats (the lower number)

Blood pressure is measured in millimeters of mercury (mm Hg), which refers to how high the pressure in the arteries can raise a column of mercury in a sphygmomanometer, a device for measuring blood pressure.

BP facts:

  • Normal blood pressure for an adult, relaxed at rest, is about 100

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