When measuring baseline vitals and the pulse is irregular you should:

Take pulse for 15 seconds and multiply the amount by 4

Take pulse for full 60 seconds

Take pulse for 30 seconds and multiply by 2

Take pulse for 45 seconds to ensure

When measuring baseline vitals and the pulse is irregular you should: Take the pulse for 15 seconds and multiply the amount by 4
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additional information:

When taking your pulse:
Using the first and second fingertips, press firmly but gently on the arteries until you feel a pulse.
Begin counting the pulse when the clock's second hand is on the 12.
Count your pulse for 60 seconds (or for 15 seconds and then multiply by four to calculate beats per minute).