Ventricular and Pacemaker Rhythms

Question 1

VENTRICULAR RHYTHMS:

Answer 1

Start at the Purkinje Fibers and has a rate of 20-40 BPM

Question 2

What are the types of premature ventricular contractions (PVCS)?

Answer 2

• Idioventricular rhythm
• Accelerated idioventricular rhythm
• Ventricular tachycardia (V-Tach)
• Agonal rhythm
• Ventricular fibrillation (V-Fib)
• Asystole

Question 3

What cause premature ventricular contractions?

Answer 3

They are caused by ectopic beats that originate from the rhythm of the ventricle

• QRS will have bizzare T-wave in opposite direction

Question 4

UNIFOCAL PVCS:

Answer 4

Early beat that suggests area of irritation is present in the ventricle

Question 5

MULTIFOCAL PVCS:

Answer 5

Different shapes/forms suggesting that irritation is present in ventricle

Question 6

INTERPOLATED PVCS:

Answer 6

Premature ventricular contraction occurring during R-R interval without interrupting normal cycle

Question 7

OCCASIONAL PVCS:

Answer 7

When more than 1 to 4 premature ventricular contractions occur per min

Question 8

FREQUENT PVCS:

Answer 8

When 5 or more premature ventricular contractions occur per min

Question 9

What are the types of PREMATURE COMPLEXES?

Answer 9

VENTRICULAR BIGEMINY = Normal sinuses impulse is followed by a vent

VENTRICULAR TRIGEMINY = When a ventricular premature beat occurs after every beat

Question 10

IDIOVENTRICULAR RHYTHM:

Answer 10

A heart rhythm in which your lower heart chambers beat more slowly than normal

• Ventricular rate is 20-40 BPM because of Purkinje Fibers
• P-wave is absent
• Can cause unconsciousness

Question 11

VENTRICULAR TACHYCARDIA (V-Tach):

Answer 11

When 3 or more PVCS occur in a row and the ventricles are continuously contracting and relaxing

*Followe CODE BLUE/ CPR

Question 12

AGORIAL RHYTHM:

Answer 12

When the SA/AV Nodes and Purkinje fibers have failed

• Loss of cardiac output
• Rate less than 20 BPM

Question 13

VENTRICULAR FIBRILLATION:

Answer 13

Chaotic electrical activity within the ventricles that cause no cardiac output

• Advanced cardiac life support will be needed
• Ventricular rate is greater than 300 BPM

Question 14

ASYSTOLE:

Answer 14

It’s a flat line, there is no electrical heart activity present

• NO RHYTHM WAVEFORM

FOLLOW RESUSCITATION POLICY

Question 15

ELECTRONIC PACEMAKER:

Answer 15

Has a …

PACING SPIKE = A thin line on ECG tracing indicating electrical stimulation from an outside source

Question 16

PACEMAKER COMPLICATIONS:

Answer 16

• Weak battery
• Program complication = Set too low to see normal contractions
• Loss of capture = Fails to initiate an electrical shock
• Oversensing = Sense outside sources and not depolarize
• Malsensing = Fails to sense
• Malfunctioning = Fails to keep appropriate rhythm