Chapter 10

Question 1

Ventricle rhythms

Answer 1

originate in an irritable focus in the ventricle - travel cell by cell through the tissue

Question 2

PVC

Answer 2

heart rate - can occur at any rate
regularity - regular but interrupted by a premature beat
T wave - opposite the QRS
causes - heart disease, hypokalemia, hypoxia, low magnesium level
effects - can lead to worsening arrhythmias such as V-tach or V-fib

Question 3

Unifocal PVC

Answer 3

Have the same shape

Question 4

Multifocal PVC

Answer 4

have different shape

Question 5

R-on-T PVC

Answer 5

Land on the T wave of the preceding beat

Question 6

Couplets

Answer 6

paired PVCs, can be unifocal or multifocal

Question 7

fusion beats

Answer 7

combination of sinus beat and PVC

Question 8

Agonal Rhythm

Answer 8

heart rate - less than 20
regularity - irregular
T waves - opposite the QRS
causes - dying patient
effects - shock, unconsciousness, death
treatment - CPR, epinephrine, or vasopressin, atropine

Question 9

Idioventricular Rhythm

Answer 9

heart rate - 20-40
regularity - regular
T waves - opposite the QRS
causes - hypoxia, massive heart or organ damage
effects - decreased cardiac output
treatment - atropine, epinephrine

Question 10

Accelerated Idioventricular rhythm

Question 11

ventricular tachycardia

Question 12

Wolff-Parkinson-White Syndrome

Question 13

Torsades de pointes

Question 14

Ventricular Fibrillation

Question 15

Asystole

Question 16

Pacemakers