|3rd degree heart block|
The rhythm is slightly irregular. The atrial rate is 68/min and the ventricular rate of 36/min. There are upright P waves that are not associated with a QRS complex and some of the P waves are buried with the T waves. No ectopic beats are noted. PR: ---, QRS: .16 sec, QT: .52 sec.
The rhythm is irregular with a rate of 110/min. There are not any P waves only fibrillatory waves. a single supraventricular ectopic beat is present, the 5th complex. There is some ST depression and inversion of the T wave in the top lead (II). PR: ---, QRS: .08 sec, QT: .32 sec.
|Normal sinus rhythm with trigeminal PACs|
The rhythm is irregular due to the PACs. The rate is 90/min. The P waves are upright and precede the QRS complexes. The 3rd, 6th, and 9th complexes are trigeminal PACs and have a P wave that differs in shape from the sinus beats. PR: .20 sec, QRS: .08 sec, QT: .36 sec.
|1st degree heart block|
The rhythm is regular and the rate is 62/min. There are upright, uniform P waves that precede the QRS complexes. The PR interval is prolonged. PR: .32 sec, QRS: .08 sec, QT: .44 sec.
The rhythm is regular with a rate of 46/min. There are low voltage P waves that precede each QRS complex. No ectopy is present. PR: .12 sec, QRS: .08 sec, QT: .44 sec.