CEN Practice Exam 1
A. The child weighs 30 kg. The correct initial joule dose is 2 joules per kg. The correct dose
would be 60 joules for the initial shock and increasing to 4 joules per kg. This dose can be
increased up to a maximum of 10 joules per kg. - ANS-A7-year-old suddenly develops
ventricular fibrillation. The child weighs 66 lbs (30 kg). Cardiopulmonary resuscitation is started
immediately. What is the correct defibrillation dose for the initial shock to be used by the
emergency nurse?
A. 60 joules
B. 30 joules
C. 120 joules
D. 90 joules
A. The use of supplemental oxygen in normoxic patients has not been established. In patients
with potential coronary artery syndrome, withholding of additional supplemental oxygen should
be considered for those in the prehospital or in-patient hospital setting and the emergency
department. - ANS-A patient presents to the emergency department with chest pain and
diaphoresis, and denies dyspnea. Vital signs are BP 148/70 mm Hg, HR 72 beats/minute, RR
18 breaths/minute, Sp02 98% on room air. Breath sounds are clear and equal. rlhe
electrocardiogram shows an inferior wall ST segment elevation. You anticipate the following
oxygen order.
A. No supplemental oxygen at this time
B. Nasal cannula at 6 L per minute
C. Partial rebreather mask at 10 L per minute
D. Nonrebreather mask at 15 L per minute
B. A demand pacemaker has the capability to sense the patient's intrinsic heart rhythm and only
delivers an impulse to "fire" when the patient's intrinsic heart rate falls below a given rate. -
ANS-During triage, the patient states the pacemaker only fires when the patient's heart rate
slows below a certain number of beats/minute. The nurse anticipates that the patient has a(n):
A. asynchronous pacemaker.
B. demand pacemaker.
C. dual-chamber pacemaker.
D. fixed-rate pacemaker.
B. A low end-tidal carbon dioxide level indicates a lack of both end cellular perfusion and
adenosine triphosphate production, resulting in cellular death. - ANS-A patient presents via
emergency medical services in cardiopulmonary arrest, following 15 minutes of cardiopulmonary
resuscitation (CPR). On completion of the initial nursing assessment, which of the following
findings would indicate that termination of resuscitation efforts should be considered?
A. Decreased compliance while performing bag-mask device ventilation
B. An end-tidal carbon dioxide level reading less than 10% after 20 minutes of high-quality CPR
C. An initial rhythm of pulseless electrical activity
D. An initial presentation of a shockable rhythm
A. The child weighs 30 kg. The correct initial joule dose is 2 joules per kg. The correct dose
would be 60 joules for the initial shock and increasing to 4 joules per kg. This dose can be
increased up to a maximum of 10 joules per kg. - ANS-A7-year-old suddenly develops
ventricular fibrillation. The child weighs 66 lbs (30 kg). Cardiopulmonary resuscitation is started
immediately. What is the correct defibrillation dose for the initial shock to be used by the
emergency nurse?
A. 60 joules
B. 30 joules
C. 120 joules
D. 90 joules
A. The use of supplemental oxygen in normoxic patients has not been established. In patients
with potential coronary artery syndrome, withholding of additional supplemental oxygen should
be considered for those in the prehospital or in-patient hospital setting and the emergency
department. - ANS-A patient presents to the emergency department with chest pain and
diaphoresis, and denies dyspnea. Vital signs are BP 148/70 mm Hg, HR 72 beats/minute, RR
18 breaths/minute, Sp02 98% on room air. Breath sounds are clear and equal. rlhe
electrocardiogram shows an inferior wall ST segment elevation. You anticipate the following
oxygen order.
A. No supplemental oxygen at this time
B. Nasal cannula at 6 L per minute
C. Partial rebreather mask at 10 L per minute
D. Nonrebreather mask at 15 L per minute
B. A demand pacemaker has the capability to sense the patient's intrinsic heart rhythm and only
delivers an impulse to "fire" when the patient's intrinsic heart rate falls below a given rate. -
ANS-During triage, the patient states the pacemaker only fires when the patient's heart rate
slows below a certain number of beats/minute. The nurse anticipates that the patient has a(n):
A. asynchronous pacemaker.
B. demand pacemaker.
C. dual-chamber pacemaker.
D. fixed-rate pacemaker.
B. A low end-tidal carbon dioxide level indicates a lack of both end cellular perfusion and
adenosine triphosphate production, resulting in cellular death. - ANS-A patient presents via
emergency medical services in cardiopulmonary arrest, following 15 minutes of cardiopulmonary
resuscitation (CPR). On completion of the initial nursing assessment, which of the following
findings would indicate that termination of resuscitation efforts should be considered?
A. Decreased compliance while performing bag-mask device ventilation
B. An end-tidal carbon dioxide level reading less than 10% after 20 minutes of high-quality CPR
C. An initial rhythm of pulseless electrical activity
D. An initial presentation of a shockable rhythm
