If the radial pulse is irregular, how long should you count?

• A. 15 seconds
• B. 60 seconds
• C. 30 seconds
• D. 120 seconds

Answer: (B)

When the pulse is irregular, count for a full minute to get an accurate rate and to capture the variability in the rhythm. Shorter counts assume a steady rhythm and can mislead you when beats come at irregular intervals or with pauses. A 60-second count records every beat and reveals the true beats-per-minute and any irregular pattern. To do this, place two fingers on the radial artery at the wrist, start the timer with the first pulse you feel, and count all the beats for 60 seconds, then note the rate and whether the rhythm is regular or irregular.