ECG components cycle 1 2 3 and Mean for normal heart P wave

ECG components cycle 1, 2, 3 and Mean for normal heart P wave P-R Interval P-R Segment QRS complex Q-T interval S-T segment T Wave Please state amplitude for P wave, QRS complex and T wave as well. I need to know based on the IMAGE of the ECG of a normal heart what EACH segment and wave measures at for the 1st, 2nd, and 3rd cycle as well as the amplitudes. I do not need to know the range of normalcy... I already know this.. I need to know the measurement of EACH component based on a basic ECG of a normal heart. Thanks.

Solution

ans.

ECG can be split into different segments.

PR Interval: it begins with P wave and ends with QRS wave. Normal values lies between .12 and .20 sec.

When ventricular preexcitation is there then duration of PR interval shortens which is less then .12 sec

In artrioventricular block the value is even greater than .20sec

QRS complex

begins with Q wave and ends with the S wave . It represents during ventricular depolirization.

ST segment

ST segments connect the QRS to T wave

ST duration is .08sec

The normal ST has slight upward concavity