Question

In an adult, a heart rate of 60-100 beats/min is a normal sinus rhythm (NSR). A heart rate at or above 101 beats/min is called tachycardia, but in young children, this rate would be considered normal. Heart rates belovw 60 beats/min are normal for highly conditioned individuals, but in most adults this is bradycardia I. Calculate the heart rate for the ECGx.0 Diagnosis P-R intervals: Normal P-R intervals are between 0.12 and 0.2 seconds, averaging about 0.16 seconds. P-F intervals longer than 0.2 seconds could be indicative of a heart block. A heart block could be produced by cardiac damage to the AV node or AV bundle, reducing electrical conduction from the atria to the ventricles. A complete heart block results in the ventricles depolarizing independently from the atria. QRS complex: A normal QRS complex is 0.06 to 0.10 seconds. If this complex is longer than 0.12 seconds, a right or left bundle branch block may be considered, and the two ventricles do not contract simultaneousl y. Q-T interval: A normal Q-T interval is 0.3-0.38 seconds. The interval becomes longer as the heart rate decreases, and the interval becomes shorter as the heart rate increases. flow) or myocardial damage lengthens the normal interval. Calculate the times for the following intervals. Show work. P-R QRS Q-T Diagnosis Pessible complications

Answer 1

P-R interval - one small square is 0.04 sec. P-R interval is 4 small squares I. e. 0.04 X 4 = 0.16 sec

QRS Interval - one small square I. e 0.04 sec

Q-T - 15 small squares ( 15 X 0.04 =0.6 sec. It is prolonged

Diagnosis - sinus bradycardia