Practice EKG Rhythm Strips 117
Identify the following rhythms.
2.
3.
4.
5.
Answers
1.
The rhythm is regular and the rate is 80/min. The P waves are uniform, upright, and precede the QRS complexes. Two unifocal PVCs are present. A compensatory pause follows the PVC. PR: .24 sec, QRS: .10 sec, QT: .44 sec,
2.
There is AV dissociation present. It looks like a type II block but there really is not any association between the P waves and the QRS complexes. The PR interval is not consistent from beat to beat. Atrial rate 110/min. Ventricular rate 30/min. PR: ---, QRS: .12 sec, QT: .40 sec.
3.
The rhythm is irregular with a ventricular rate of 75/min. The R-R interval between the first two complexes is .76 sec and the R-R interval between the last two complexes is .88 sec. The P waves are positive and correspond to the QRS complexes. No ectopic beats are noted. PR: .16 sec, QRS: .08 sec, QT: .42 sec.
4.
Complete AV dissociation is present. The atrial rate is 80/min and the ventricular rate is 40/min. The P waves are upright and have no relationship with the QRS complexes. No ectopic beats are present. PR: ---, QRS: .08 sec, QT: .48 sec. The block is close to the AV junction which gives the QRS complexes a narrow appearance.
5.
The rhythm is irregular and the rate is 70/min. There are flutter waves present in a variable ratio. 5:1, 4:1, 3:1. No ectopic beats are present. PR: ---, QRS: .08 sec, QT: .28 sec.
1.
2.
3.
4.
5.
Answers
1.
 |
| 1st degree block with unifocal PVCs |
The rhythm is regular and the rate is 80/min. The P waves are uniform, upright, and precede the QRS complexes. Two unifocal PVCs are present. A compensatory pause follows the PVC. PR: .24 sec, QRS: .10 sec, QT: .44 sec,
2.
|
| Complete heart block |
3.
|
| Sinus arrhythmia |
The rhythm is irregular with a ventricular rate of 75/min. The R-R interval between the first two complexes is .76 sec and the R-R interval between the last two complexes is .88 sec. The P waves are positive and correspond to the QRS complexes. No ectopic beats are noted. PR: .16 sec, QRS: .08 sec, QT: .42 sec.
4.
 |
| Complete heart block |
Complete AV dissociation is present. The atrial rate is 80/min and the ventricular rate is 40/min. The P waves are upright and have no relationship with the QRS complexes. No ectopic beats are present. PR: ---, QRS: .08 sec, QT: .48 sec. The block is close to the AV junction which gives the QRS complexes a narrow appearance.
5.
 |
| Atrial flutter |
The rhythm is irregular and the rate is 70/min. There are flutter waves present in a variable ratio. 5:1, 4:1, 3:1. No ectopic beats are present. PR: ---, QRS: .08 sec, QT: .28 sec.
Comments
Post a Comment