Deck 8: Pacemaker Rhythms

Question 1

Identify the following rhythm: _________________________

Answer 1

Ventricular paced rhythm with 100% capture

Question 2

A(n) __________ is a vertical line on the ECG that indicates the artificial pacemaker has discharged.

Answer 2

pacemaker spike

Question 3

In pacing, rate modulation refers to _____.

A) the ability of a pacemaker to recognize and respond to intrinsic electrical activity
B) the minimum level of electrical current needed to consistently depolarize the myocardium
C) the ability of a pacemaker to increase the pacing rate in response to physical activity or metabolic demand
D) a pacing lead with a single electrical pole at the distal tip of the pacing lead through which the stimulating pulse is delivered.

Answer 3

C
Rate modulation refers to a pacemaker's ability to adapt its rate to meet the body's needs caused by increased physical activity and then increase or decrease the pacing rate accordingly. A pacemaker's rate modulation capability may also be referred to as rate responsiveness or rate adaptation.

Question 4

Identify the following rhythm: _________________________

Question 5

The first letter of the pacemaker identification code represents _____.

A) the chamber sensed
B) the chamber paced
C) the mode of response
D) programmable functions

Question 6

Describe what is meant by the term overdrive pacing.

Question 7

In pacing, sensitivity refers to _____.

A) the ability of a pacemaker to recognize and respond to intrinsic electrical activity
B) a pacing lead with a single electrical pole at the distal tip of the pacing lead through which the stimulating pulse is delivered
C) the successful conduction of an artificial pacemaker's impulse through the myocardium, resulting in depolarization
D) the length of time between an atrial sensed or atrial paced event and the delivery of a ventricular pacing stimulus

Question 8

The second letter of the pacemaker identification code represents _____.

A) programmable functions
B) the chamber sensed
C) the mode of response
D) the chamber paced

Question 9

In pacing, threshold refers to _____.

A) the ability of a pacemaker to recognize and respond to intrinsic electrical activity
B) the minimum level of electrical current needed to consistently depolarize the myocardium
C) a pacing lead with a single electrical pole at the distal tip of the pacing lead through which the stimulating pulse is delivered
D) the ability of a pacemaker to increase the pacing rate in response to physical activity or metabolic demand

Question 10

Identify the following rhythm: _________________________

Question 11

Capture is _____.

A) the electrical stimulus delivered by a pacemaker's pulse generator
B) a vertical line on the ECG that indicates the pacemaker has discharged
C) the time measured between a sensed cardiac event and the next pacemaker output
D) the ability of a pacing stimulus to successfully depolarize the cardiac chamber that is being paced

Question 12

Explain the difference between electrical capture and mechanical capture.

Question 13

Explain the benefits of a dual-chamber pacemaker.

Question 14

Identify the following rhythm: _________________________

Question 15

Your patient has a DDD pacemaker. Briefly explain the meaning of each of these letters.

Question 16

Your patient has a VVI pacemaker. Briefly explain the meaning of each of these letters.

Question 17

A demand pacemaker is also known as a _____ pacemaker.