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#1
12-01-2011
 USMLE Forums Scout Steps History: 1+CK+CS Posts: 88 Threads: 25 Thanked 19 Times in 11 Posts Reputation: 29
Calculating the heart rate in the EKG

What is the quickest and easiest method of calculating heart rates in ECG strips during exam for normal and abnormal rates..

#2
12-01-2011
 USMLE Forums Newbie Steps History: Not yet Posts: 3 Threads: 0 Thanked 0 Times in 0 Posts Reputation: 10
The easiest way

The easiest way for regular rhythm Is to calculate the # of large squares between two successive R waves then divide 300 over that #

For irregular rhythm it is more difficult
Calculate 20 large squares and count the # of R waves in that period then multiply with 15 ( bcs each large square is .2 sec so 20 squares equal 4 sec, and to reach 60 sec multiply by 15 ) or count 30 squares and multiply the # of R waves with 10 .

Hope it helps

 Tags EKGs-

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