The difference between the apical pulse rate and the radial pulse rate, counted simultaneously, defines the discrepancy. A healthcare professional assesses the apical pulse by listening with a stethoscope over the heart, typically at the apex. At the same time, another professional palpates the radial pulse in the wrist. Subtracting the radial pulse rate from the apical pulse rate yields the specific value. For instance, if the apical rate is 80 beats per minute and the radial rate is 70 beats per minute, the result would be 10 beats per minute.
This measurement is important in identifying certain cardiovascular conditions, such as atrial fibrillation, where not every heartbeat generates a palpable peripheral pulse. Recognizing the discrepancy can aid in the diagnosis and management of cardiac arrhythmias. Historically, manual measurement and comparison of the two pulse rates provided a crucial, non-invasive diagnostic tool, especially before the widespread availability of advanced cardiac monitoring technologies.
