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You should never take a manual pulse with your thumb because of the chance of picking up your own pulse from the blood vessels in your thumb.
the thumb's tip is in a awkward position than the other fingertips.
Your thumb also has a pulse so you could be counting your own pulse beats per minute.
The thumb has a pulse.
Your thumb has its own pulse so it shouldn't be used to take your pulse.
the thumb, because it has its own pulse so cannot be used.
the thumb is never used because the thumb also has its own beat, so you could potentially be counting your own beat instead of the other persons. Also if you take your own pulse by your own thumb, you may be overlapping the counting of the beat
The thumb should not be used for measuring another person's heart rate, as its strong pulse may interfere with discriminating the site of pulsation
radial
radial pulse
Radial artery (lateral or thumb side of lower arm).
There's actually two pulses in your wrist. The most commonly used and easiest to find is your radial pulse. The radial pulse can be found by starting at your thumb and moving down to your wrist. Your ulnar pulse is harder to find and is found on the opposite side by tracing down your pinkie finger.