CEN 100 Final (Certified Emergency
Nurse) Latest 2026/2027 UPDATED
ACTUAL Exam Questions and
CORRECT Answers | Verified
CEN 100 Final (Certified Emergency Nurse) Latest |
Comprehensive Examination
CEN 100 Final (Certified Emergency Nurse) Latest 2026/2027
UPDATED ACTUAL Exam Questions and CORRECT
Answers actual exam preparation document with verified
INTRODUCTION
This document is an important and very helpful preparation
resource for CEN 100 Final (Certified Emergency Nurse) Latest
2026/2027 UPDATED ACTUAL Exam Questions and
CORRECT Answers. Every item uses a focused exam stem,
four response options, a keyed response, and a clear rationale,
making it easier to understand the subject, spot distractors, and
build real exam confidence.
Page 1
, Question 1
A patient arrives with a heart rate of 38 bpm, sinus bradycardia, and a blood
pressure of 78/44 mmHg after a beta-blocker overdose. Which intervention is
the most appropriate next step according to current AHA guidelines?
A. Administer atropine 0.5 mg IV and reassess in 3-5 minutes.
B. Initiate transcutaneous pacing immediately.
C. Administer glucagon 5 mg IV bolus followed by infusion.
D. Administer calcium chloride 10% 10 mL IV push.
Correct Answer: C - Administer glucagon 5 mg IV bolus followed
by infusion.
RATIONALE
Glucagon bypasses beta-receptor blockade by increasing cAMP and is
the preferred antidote for symptomatic beta-blocker toxicity. Atropine
is often ineffective for beta-blocker overdose. Pacing may be required
but is not first-line; calcium is used for calcium-channel blocker
toxicity.
Question 2
Which finding on a 12-lead ECG most reliably distinguishes hyperkalemia
from acute myocardial infarction in a patient with peaked T waves and a
widened QRS?
A. Presence of reciprocal ST depression.
B. Shortened QT interval.
C. Bradycardia with a sine-wave pattern.
D. ST elevation in contiguous leads.
Correct Answer: C - Bradycardia with a sine-wave pattern.
Page 2
, RATIONALE
Hyperkalemia classically produces peaked T waves, widened QRS,
and a sine-wave pattern with bradycardia, whereas MI produces
regional ST elevation with reciprocal changes. Reciprocal ST
depression and contiguous ST elevation are ischemic markers.
Shortened QT is not typical of hyperkalemia.
Question 3
A patient with suspected sepsis has a lactate of 4.2 mmol/L, hypotension
unresponsive to 30 mL/kg crystalloid, and a MAP of 58 mmHg. According to
the Surviving Sepsis Campaign 2026, which vasopressor is the first-line agent?
A. Dopamine
B. Norepinephrine
C. Vasopressin
D. Phenylephrine
Correct Answer: B - Norepinephrine
RATIONALE
Norepinephrine is the recommended first-line vasopressor for septic
shock due to its balanced alpha- and beta-adrenergic effects.
Dopamine is associated with more arrhythmias and is not preferred.
Vasopressin and phenylephrine are typically added as second-line
agents.
Question 4
A patient with a Glasgow Coma Scale of 6 after a fall is being prepared for
intubation. Which pre-intubation checklist item is most critical to prevent
secondary brain injury?
A. Ensuring two large-bore IVs are patent.
B. Administering a bolus of 3% hypertonic saline.
C. Maintaining normocapnia and avoiding hypotension.
D. Obtaining a cervical spine X-ray before intubation.
Page 3
, Correct Answer: C - Maintaining normocapnia and avoiding
hypotension.
RATIONALE
Preventing hypotension and maintaining normocapnia (PaCO2 35-40
mmHg) are critical to avoid secondary brain injury in traumatic brain
injury. Hypertonic saline is used for elevated ICP but is not the
immediate pre-intubation priority. IV access and imaging do not
directly prevent secondary injury.
Question 5
A patient presents with a suspected opioid overdose, pinpoint pupils, and
respiratory rate of 6/min. After administering naloxone, the patient develops
acute pulmonary edema. What is the most likely cause?
A. Anaphylactic reaction to naloxone.
B. Rapid reversal of opioid-induced respiratory depression.
C. Naloxone-induced seizure activity.
D. Underlying cardiac failure exacerbated by naloxone.
Correct Answer: B - Rapid reversal of opioid-induced respiratory
depression.
RATIONALE
Naloxone can precipitate acute pulmonary edema due to a sudden
catecholamine surge and increased sympathetic tone when reversing
opioid-induced respiratory depression. Anaphylaxis to naloxone is
rare. Seizures are not a typical effect, and cardiac failure is not directly
caused by naloxone.
Question 6
A patient with a traumatic amputation of the right arm is bleeding profusely.
Which method is the most effective initial hemorrhage control according to
current TCCC guidelines?
Page 4
Nurse) Latest 2026/2027 UPDATED
ACTUAL Exam Questions and
CORRECT Answers | Verified
CEN 100 Final (Certified Emergency Nurse) Latest |
Comprehensive Examination
CEN 100 Final (Certified Emergency Nurse) Latest 2026/2027
UPDATED ACTUAL Exam Questions and CORRECT
Answers actual exam preparation document with verified
INTRODUCTION
This document is an important and very helpful preparation
resource for CEN 100 Final (Certified Emergency Nurse) Latest
2026/2027 UPDATED ACTUAL Exam Questions and
CORRECT Answers. Every item uses a focused exam stem,
four response options, a keyed response, and a clear rationale,
making it easier to understand the subject, spot distractors, and
build real exam confidence.
Page 1
, Question 1
A patient arrives with a heart rate of 38 bpm, sinus bradycardia, and a blood
pressure of 78/44 mmHg after a beta-blocker overdose. Which intervention is
the most appropriate next step according to current AHA guidelines?
A. Administer atropine 0.5 mg IV and reassess in 3-5 minutes.
B. Initiate transcutaneous pacing immediately.
C. Administer glucagon 5 mg IV bolus followed by infusion.
D. Administer calcium chloride 10% 10 mL IV push.
Correct Answer: C - Administer glucagon 5 mg IV bolus followed
by infusion.
RATIONALE
Glucagon bypasses beta-receptor blockade by increasing cAMP and is
the preferred antidote for symptomatic beta-blocker toxicity. Atropine
is often ineffective for beta-blocker overdose. Pacing may be required
but is not first-line; calcium is used for calcium-channel blocker
toxicity.
Question 2
Which finding on a 12-lead ECG most reliably distinguishes hyperkalemia
from acute myocardial infarction in a patient with peaked T waves and a
widened QRS?
A. Presence of reciprocal ST depression.
B. Shortened QT interval.
C. Bradycardia with a sine-wave pattern.
D. ST elevation in contiguous leads.
Correct Answer: C - Bradycardia with a sine-wave pattern.
Page 2
, RATIONALE
Hyperkalemia classically produces peaked T waves, widened QRS,
and a sine-wave pattern with bradycardia, whereas MI produces
regional ST elevation with reciprocal changes. Reciprocal ST
depression and contiguous ST elevation are ischemic markers.
Shortened QT is not typical of hyperkalemia.
Question 3
A patient with suspected sepsis has a lactate of 4.2 mmol/L, hypotension
unresponsive to 30 mL/kg crystalloid, and a MAP of 58 mmHg. According to
the Surviving Sepsis Campaign 2026, which vasopressor is the first-line agent?
A. Dopamine
B. Norepinephrine
C. Vasopressin
D. Phenylephrine
Correct Answer: B - Norepinephrine
RATIONALE
Norepinephrine is the recommended first-line vasopressor for septic
shock due to its balanced alpha- and beta-adrenergic effects.
Dopamine is associated with more arrhythmias and is not preferred.
Vasopressin and phenylephrine are typically added as second-line
agents.
Question 4
A patient with a Glasgow Coma Scale of 6 after a fall is being prepared for
intubation. Which pre-intubation checklist item is most critical to prevent
secondary brain injury?
A. Ensuring two large-bore IVs are patent.
B. Administering a bolus of 3% hypertonic saline.
C. Maintaining normocapnia and avoiding hypotension.
D. Obtaining a cervical spine X-ray before intubation.
Page 3
, Correct Answer: C - Maintaining normocapnia and avoiding
hypotension.
RATIONALE
Preventing hypotension and maintaining normocapnia (PaCO2 35-40
mmHg) are critical to avoid secondary brain injury in traumatic brain
injury. Hypertonic saline is used for elevated ICP but is not the
immediate pre-intubation priority. IV access and imaging do not
directly prevent secondary injury.
Question 5
A patient presents with a suspected opioid overdose, pinpoint pupils, and
respiratory rate of 6/min. After administering naloxone, the patient develops
acute pulmonary edema. What is the most likely cause?
A. Anaphylactic reaction to naloxone.
B. Rapid reversal of opioid-induced respiratory depression.
C. Naloxone-induced seizure activity.
D. Underlying cardiac failure exacerbated by naloxone.
Correct Answer: B - Rapid reversal of opioid-induced respiratory
depression.
RATIONALE
Naloxone can precipitate acute pulmonary edema due to a sudden
catecholamine surge and increased sympathetic tone when reversing
opioid-induced respiratory depression. Anaphylaxis to naloxone is
rare. Seizures are not a typical effect, and cardiac failure is not directly
caused by naloxone.
Question 6
A patient with a traumatic amputation of the right arm is bleeding profusely.
Which method is the most effective initial hemorrhage control according to
current TCCC guidelines?
Page 4
