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NURS 5354 EKG EXAM QUESTIONS
WITH ANSWERS.
Mobitz Type II S/S - correct answer -Bradycardia, irregular heart
beats, or hypotension
3rd degree AV block - correct answer -complete heart block. No
conduction through the AV node leading to complete AV
dissociation. The ECG shows regular P intervals, regular R-R
intervals, failure of a relationship between the P waves and QRS
complexes, and typically more P waves are present than QRS
complexes
3rd degree AV block etiology - correct answer -myocardial
infarction, valvular disease or recent valvular surgery, anti-
arrhythmic
3rd degree S/S - correct answer -altered mental status, SOB,
dizziness, syncope, CP
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Patients who present with a AV block typically require monitoring
by a cardiologist or an 2nd and 3rd AV block require - correct
answer -immediate EP consultation for possible pacemaker
placement
Paced rhythms Oversensing - correct answer -device interprets
non-cardiac sources as being cardiac which in turns results in the
device not initiating when it should
Paced Rhythm Undersensing - correct answer -device fails to turn
off despite a cardiac impulse being present
Paced Rhythm Capture - correct answer -device delivers a
sufficient impulse that results in depolarization. The waveform
follows the pacer spike
Paced Rhythm Failure to capture - correct answer -device fails to
deliver enough energy to illicit depolarization. As a result, there
will be a pacer spike with no corresponding depolarization or
delayed depolarizatio.
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Atrial-pacing - correct answer -Presence of a pacing spike prior to
the p-wave
Ventricular-pacing - correct answer -presence of a pacing spike
prior to the QRS complex (wide and bizarre). The pacemaker lead
is usually placed in the R V causing RV depolarizing prior to the L
V. This delayed ventricular response results in a ventricular
configuration similar to a LBBB
Atrioventricular-pacing - correct answer -presence of a pacing
spike prior to the p wave and QRS complex.
AOO - correct answer -atrial pacing but no sensing
AAI - correct answer -atrial pacing and atrial sensing, therefore,
intrinsic p waves inhibit atrial pacing
VOO - correct answer -ventricular pacing but no sensing
NURS 5354 EKG EXAM QUESTIONS
WITH ANSWERS.
Mobitz Type II S/S - correct answer -Bradycardia, irregular heart
beats, or hypotension
3rd degree AV block - correct answer -complete heart block. No
conduction through the AV node leading to complete AV
dissociation. The ECG shows regular P intervals, regular R-R
intervals, failure of a relationship between the P waves and QRS
complexes, and typically more P waves are present than QRS
complexes
3rd degree AV block etiology - correct answer -myocardial
infarction, valvular disease or recent valvular surgery, anti-
arrhythmic
3rd degree S/S - correct answer -altered mental status, SOB,
dizziness, syncope, CP
, Page | 2
Patients who present with a AV block typically require monitoring
by a cardiologist or an 2nd and 3rd AV block require - correct
answer -immediate EP consultation for possible pacemaker
placement
Paced rhythms Oversensing - correct answer -device interprets
non-cardiac sources as being cardiac which in turns results in the
device not initiating when it should
Paced Rhythm Undersensing - correct answer -device fails to turn
off despite a cardiac impulse being present
Paced Rhythm Capture - correct answer -device delivers a
sufficient impulse that results in depolarization. The waveform
follows the pacer spike
Paced Rhythm Failure to capture - correct answer -device fails to
deliver enough energy to illicit depolarization. As a result, there
will be a pacer spike with no corresponding depolarization or
delayed depolarizatio.
, Page | 3
Atrial-pacing - correct answer -Presence of a pacing spike prior to
the p-wave
Ventricular-pacing - correct answer -presence of a pacing spike
prior to the QRS complex (wide and bizarre). The pacemaker lead
is usually placed in the R V causing RV depolarizing prior to the L
V. This delayed ventricular response results in a ventricular
configuration similar to a LBBB
Atrioventricular-pacing - correct answer -presence of a pacing
spike prior to the p wave and QRS complex.
AOO - correct answer -atrial pacing but no sensing
AAI - correct answer -atrial pacing and atrial sensing, therefore,
intrinsic p waves inhibit atrial pacing
VOO - correct answer -ventricular pacing but no sensing
