CARDIOLOGY CHAPTER 17
CARDIOVASCULAR EMERGENCIES
QUESTIONS VERIFIED AND ACCURATE.
In contrast to coarse ventricular fibrillation, fine ventricular fibrillation indicates
that:
A: Energy reserves of the cardiac cells have been expended
B: The arrhythmia is more likely to respond to defibrillation
C: A perfusing rhythm is not possible following defibrillation
D: The cardiac cells temporarily have adequate energy stores
A: Energy reserves of the cardiac cells have been expended
Which of the following statements regarding asystole is correct?
A: A disconnected ECG lead often mimics asystole
B: Defibrillation is indicated in some cases of asystole
C: Most cases of asystole present with P waves only
D: Asystole is the result of prolonged myocardial hypoxia
D: Asystole is the result of prolonged myocardial hypoxia
Unlike an idioventricular rhythm, an agonal rhythm:
A: Is associated with a faster rate
B: Does not produce a palpable pulse
C: Is associated with a lower mortality rate
D: Indicates a regular ventricular pacemaker
B: Does not produce a palpable pulse
The firing of an artificial ventricular pacemaker causes:
A: A change in the shape of the preceding P waves
B: A vertical spike followed by a wide QRS complex
C: A small spike followed by a narrow QRS complex
D: A wide QRS complex followed by a vertical spike
,B: A vertical spike followed by a wide QRS complex
A demand pacemaker:
A: Generates pacing impulses only when it senses that the heart's natural
pacemaker has fallen below a preset rate
B: Sends out single electrical impulses when the patient's inherent pacemaker
rate exceeds 150 beats/min
C: Is easily identified on a cardiac rhythm strip by noting the presence of pacer
spikes before all of the QRS complexes
D: Attaches to the atria and the ventricles and only generates an impulse if it
senses that the patient is in ventricular fibrillation
A: Generates pacing impulses only when it senses that the heart's natural pacemaker
has fallen below a preset rate
A "runaway" pacemaker is characterized by:
A: An absence of pacemaker spikes
B: Profound slowing of the heart rate
C: A tachycardic pacemaker rhythm
D: A narrowing of the QRS complexes
C: A tachycardic pacemaker rhythm
Patient's with Wolff-Parkinson-White syndrome:
A: Have a diseased SA node, resulting in ectopic atrial pacemakers and abnormal
AV nodal conduction
B: Are highly susceptible to a variety of bradycardic rhythms due to an abnormal
delay at the AV node
C: Have an accessory pathway that bypasses the AV node and causes early
ventricular depolarization
D: Experience independent atrial depolarization due to failure of the Bachmann
bundle between the atria
C: Have an accessory pathway that bypasses the AV node and causes early
ventricular depolarization
,A delta wave is identified on a cardiac rhythm strip as a(n):
A: Apparent P wave that occurs at the end of the QRS complex
B: Acute widening of the QRS complex immediately after the R wave
C: Rapid upslope to the R wave immediately after the end of the P wave
D: Delay between the end of the P wave and the beginning of the R wave
C: Rapid upslope to the R wave immediately after the end of the P wave
Aberrant conduction is _____ conduction.
A: Rapid
B: Abnormal
C: Very slow
D: Irregular
B: Abnormal
The presence of a J wave (Osborn wave) on the ECG is an indicator of:
A: A delta wave
B: Hyponatremia
B: Hypercalcemia
D: Hypothermia
D: Hypothermia
Which of the following ECG abnormalities is MOST consistent with hyperkalemia?
A: Tall, peaked T waves
B: Prominent U waves
C: Prolonged QT interval
D: The presence of a J wave
A: Tall, peaked T waves
Lead I views the _____ wall of the heart, while lead aVF views the _____ wall of the
heart.
A: Lateral, inferior
B: Septal, anterior
, C: Posterior, septal
D: Anterior, inferior
A: Lateral, inferior
The precordial leads to NOT view the _____ wall of the heart
A: Septal
B: Inferior
C: Anterior
D: Laterl
B: Inferior
When viewing leads V3 and V4, you are looking at the _____ wall of the _____.
A: Septal, heart
B: Lateral, left ventricle
C: Anterior, left ventricle
D: Inferior, right ventricle
C: Anterior, left ventricle
Which of the following leads provides the BEST view of the anterolateral wall of
the left ventricle?
A: V2 to V3
B: V4 to V6
C: V4 to V5
D: V5 to V6
B: V4 to V6
Leads V1 to V3 allow you to view the _____ wall of the left ventricle.
A: Septal
B: Lateral
C: Anterior
D: Anteroseptal
D: Anteroseptal
CARDIOVASCULAR EMERGENCIES
QUESTIONS VERIFIED AND ACCURATE.
In contrast to coarse ventricular fibrillation, fine ventricular fibrillation indicates
that:
A: Energy reserves of the cardiac cells have been expended
B: The arrhythmia is more likely to respond to defibrillation
C: A perfusing rhythm is not possible following defibrillation
D: The cardiac cells temporarily have adequate energy stores
A: Energy reserves of the cardiac cells have been expended
Which of the following statements regarding asystole is correct?
A: A disconnected ECG lead often mimics asystole
B: Defibrillation is indicated in some cases of asystole
C: Most cases of asystole present with P waves only
D: Asystole is the result of prolonged myocardial hypoxia
D: Asystole is the result of prolonged myocardial hypoxia
Unlike an idioventricular rhythm, an agonal rhythm:
A: Is associated with a faster rate
B: Does not produce a palpable pulse
C: Is associated with a lower mortality rate
D: Indicates a regular ventricular pacemaker
B: Does not produce a palpable pulse
The firing of an artificial ventricular pacemaker causes:
A: A change in the shape of the preceding P waves
B: A vertical spike followed by a wide QRS complex
C: A small spike followed by a narrow QRS complex
D: A wide QRS complex followed by a vertical spike
,B: A vertical spike followed by a wide QRS complex
A demand pacemaker:
A: Generates pacing impulses only when it senses that the heart's natural
pacemaker has fallen below a preset rate
B: Sends out single electrical impulses when the patient's inherent pacemaker
rate exceeds 150 beats/min
C: Is easily identified on a cardiac rhythm strip by noting the presence of pacer
spikes before all of the QRS complexes
D: Attaches to the atria and the ventricles and only generates an impulse if it
senses that the patient is in ventricular fibrillation
A: Generates pacing impulses only when it senses that the heart's natural pacemaker
has fallen below a preset rate
A "runaway" pacemaker is characterized by:
A: An absence of pacemaker spikes
B: Profound slowing of the heart rate
C: A tachycardic pacemaker rhythm
D: A narrowing of the QRS complexes
C: A tachycardic pacemaker rhythm
Patient's with Wolff-Parkinson-White syndrome:
A: Have a diseased SA node, resulting in ectopic atrial pacemakers and abnormal
AV nodal conduction
B: Are highly susceptible to a variety of bradycardic rhythms due to an abnormal
delay at the AV node
C: Have an accessory pathway that bypasses the AV node and causes early
ventricular depolarization
D: Experience independent atrial depolarization due to failure of the Bachmann
bundle between the atria
C: Have an accessory pathway that bypasses the AV node and causes early
ventricular depolarization
,A delta wave is identified on a cardiac rhythm strip as a(n):
A: Apparent P wave that occurs at the end of the QRS complex
B: Acute widening of the QRS complex immediately after the R wave
C: Rapid upslope to the R wave immediately after the end of the P wave
D: Delay between the end of the P wave and the beginning of the R wave
C: Rapid upslope to the R wave immediately after the end of the P wave
Aberrant conduction is _____ conduction.
A: Rapid
B: Abnormal
C: Very slow
D: Irregular
B: Abnormal
The presence of a J wave (Osborn wave) on the ECG is an indicator of:
A: A delta wave
B: Hyponatremia
B: Hypercalcemia
D: Hypothermia
D: Hypothermia
Which of the following ECG abnormalities is MOST consistent with hyperkalemia?
A: Tall, peaked T waves
B: Prominent U waves
C: Prolonged QT interval
D: The presence of a J wave
A: Tall, peaked T waves
Lead I views the _____ wall of the heart, while lead aVF views the _____ wall of the
heart.
A: Lateral, inferior
B: Septal, anterior
, C: Posterior, septal
D: Anterior, inferior
A: Lateral, inferior
The precordial leads to NOT view the _____ wall of the heart
A: Septal
B: Inferior
C: Anterior
D: Laterl
B: Inferior
When viewing leads V3 and V4, you are looking at the _____ wall of the _____.
A: Septal, heart
B: Lateral, left ventricle
C: Anterior, left ventricle
D: Inferior, right ventricle
C: Anterior, left ventricle
Which of the following leads provides the BEST view of the anterolateral wall of
the left ventricle?
A: V2 to V3
B: V4 to V6
C: V4 to V5
D: V5 to V6
B: V4 to V6
Leads V1 to V3 allow you to view the _____ wall of the left ventricle.
A: Septal
B: Lateral
C: Anterior
D: Anteroseptal
D: Anteroseptal
