What is the Difference Between Apical and Radial Pulse?

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The main difference between apical and radial pulse is their location: the apical pulse is felt over the left side of the chest on the apex of the heart, while the radial pulse is felt at the wrist. Here are some key differences between the two:

  • Location: Apical pulse is located on the left side of the chest over the apex of the heart, while radial pulse is located at the wrist.
  • Pulse Measurement: Apical pulse is measured using a stethoscope placed over the heart, whereas radial pulse is measured by applying finger pressure to the inner wrist.
  • Sensitivity: Radial pulse can be lost if the heart pumps blood very weakly, while apical pulse provides a more accurate reading of heart contractions.
  • Pulse Deficit: The difference between apical and radial pulse measurements is called pulse deficit. A normal apical-radial pulse is zero, but when the two numbers are different, it is called a pulse deficit, which may indicate an issue with the heart or vascular system.

In a healthy adult, the apical and radial pulse should ideally be the same. However, if the heart is weak or there is vascular disease, the radial pulse may be lower than the apical pulse. The apical pulse is considered more accurate and sensitive than the radial pulse, as it provides information on the heart's count, rhythm, strength, and quality.

Comparative Table: Apical vs Radial Pulse

The main difference between apical and radial pulse is that the apical pulse is felt over the left side of your chest over your heart, whereas the radial pulse is felt at your wrist. Here is a table outlining the differences between apical and radial pulse:

Feature Apical Pulse Radial Pulse
Pulse location Felt over the left side of your chest over the apex of your heart Felt at your wrist
Pulse measurement Requires a stethoscope for auscultation Can be palpated using the tips of the index and third fingers
Pulse deficit The difference between apical and radial pulse is called pulse deficit -

Pulse deficit is the difference between the apical and radial pulse, and it may indicate an irregularity in the heart's function. If a physician finds any irregularity in the apical pulse, they will check for pulse deficit by taking simultaneous measurements of both apical and radial pulses for one full minute.