a. Junctional rhythm
b. Atrial fibrillation
c. Idioventricular rhythm
d. Complete heart block
a. Atrial paced
b. Biventricular paced
c. Dual paced
d. Ventricular paced
a. Junctional tachycardia
b. Supraventricular tachycardia
c. Sinus tachycardia
d. Atrial tachycardia
a. Sinus bradycardia with a pause
b. Sinus bradycardia with sinus arrhythmia
d. Junctional rhythm
a. Atrial fibrillation with RVR
b. Multifocal atrial tachycardia
c. Supraventricular tachycardia
d. Polymorphic ventricular tachycardia
1.b. Atrial fibrillation. The rhythm is irregular, irregular. The rate is extremely bradycardic at 30/min. No P waves are seen. Fibrillation can be seen between the QRS complexes. The QRS complexes are wide. There is 3 mm ST elevation in lead II. No ectopic beats are seen. PR: ---, QRS: .12 sec, QT: .44 sec.
2. b. Biventricular paced. The rate is regular. The rate is 75/min. The P waves are uniform. The rhythm is 100% biventricular paced.
3. a. Junctional tachycardia. The rhythm is regular. The rate is 125/min. No P waves are seen. That notching on the down slope of the ST segment may be an inverted P wave. The QRS complexes are narrow. No ectopic beats are seen. PR: ---, QRS: .08 sec, QT: .36 sec. If the rate were over 150 we would probably call this SVT. It cannot be sinus tachycardia or atrial tachycardia because both rhythms would have upright P waves
4. a. Sinus bradycardia with a pause. The rate is slow, it's 40/min. The rhythm is irregur because of the pause. There are upright and uniform P waves before each QRS complex. The QRS complexes look a little wide. No ectopic beats are seen. There is a 1.6 second pause present. PR: .16 sec, QRS: .12 sec, QT: .40 sec.
5. b. Multifocal atrial tachycardia. A definite P wave is seen with the 9th complex. Suspicious P waves are seen with the 12th and 17th complexes too.