CERTIFIED EMERGENCY NURSE EXAM
2025 QUESTIONS AND ANSWERS GRADED
A+
The team is performing CPR on a patient. The rhythm that will respond to an
electrical shock is:
a. Asystole
b. PEA
c. Ventricular fibrillation
d. SVT
c. Ventricular fibrillation
Ventricular fibrillation and pulseless ventricular tachycardia are the two rhythms
that are considered to be "shockable" cardiac arrest rhythms. Although asystole and
PEA are cardiac arrest rhythms, they will not respond to electrical shock.
When suctioning during a cardiac arrest, suctioning should be limited to which of
the following?
a. Less than 5 seconds
b. Less than 10 seconds
c. Less than 20 seconds
,d. Less than 30 seconds
b. Less than 10 seconds
According to the 2010 BLS and ACLS guidelines, suctioning for longer than 10
seconds may result in pulling too much oxygen out of the airways resulting in
hypoxemia.
Possible causes of cardiac arrest include all of the following EXCEPT:
a. Hypervolemia
b. Hypoxia
c. Hypokalemia
d. Tension Pneumothorax
a. Hypervolemia
Common causes of cardiac arrest are known as the H's and T's and include:
hypovolemia (NOT hypervolemia), hypoxia, hydrogen ion excess (acidosis), hypo
or hyperkalemia, hypothermia, tension pneumothorax, tamponade, toxins, and
thrombosis (pulmonary or coronary). Correction of these causes can often reverse a
cardiac arrest.
You are providing ventilations using a Bag-mask device. Suddenly, you do not see
the patient's chest rise with the ventilation. You reposition the patient to ensure an
,open airway. When you attempt to ventilate, you do not see his chest rise. The
most likely cause of this is:
a. The bag-mask device is faulty
b. Airway obstruction
c. The patient has suffered an MI
d. Cardiac tamponade
b. Airway obstruction
The most likely cause of the failure of the chest to rise during ventilations is an
airway obstruction. Although a faulty bag-mask device is a possibility, it is
unlikely that it would fail in the middle of providing ventilations.
Preload refers to:
a. The volume of blood entering the left side of the heart
b. The volume of blood entering the right side of the heart
c. The pressure in the venous system that the heart must overcome to pump the
blood
d. The pressure in the arterial system that the heart must overcome to pump the
blood
b. The volume of blood entering the right side of the heart
, Preload is the volume of blood that enters the right side of the heart. This volume
stretches the fibers in the heart prior to contraction. Preload is commonly measured
as atrial pressure.
The patient is brought to the ED with an anterior ST-elevation myocardial
infarction (STEMI). You are assessing him for possible administration of
fibrinolytics. An absolute contraindication for this treatment is:
a. The patient's pain is not relieved by medications.
b. Symptoms began 36 hours before arrival.
c. The patient has received aspirin in the last 2 hours.
d. The patient had a previous MI 6 years ago.
b. Symptoms began 36 hours before arrival.
Fibrinolytic therapy is generally NOT recommended for patients whose symptoms
began more than 12 hours before arrival. Fibrinolytics should not be given if the
onset of symptoms was more than 24 hours before arrival UNLESS a posterior MI
is diagnosed. In this case, the MI was anterior.
According to American Heart Association ACLS guidelines, cricoid pressure
during intubation:
2025 QUESTIONS AND ANSWERS GRADED
A+
The team is performing CPR on a patient. The rhythm that will respond to an
electrical shock is:
a. Asystole
b. PEA
c. Ventricular fibrillation
d. SVT
c. Ventricular fibrillation
Ventricular fibrillation and pulseless ventricular tachycardia are the two rhythms
that are considered to be "shockable" cardiac arrest rhythms. Although asystole and
PEA are cardiac arrest rhythms, they will not respond to electrical shock.
When suctioning during a cardiac arrest, suctioning should be limited to which of
the following?
a. Less than 5 seconds
b. Less than 10 seconds
c. Less than 20 seconds
,d. Less than 30 seconds
b. Less than 10 seconds
According to the 2010 BLS and ACLS guidelines, suctioning for longer than 10
seconds may result in pulling too much oxygen out of the airways resulting in
hypoxemia.
Possible causes of cardiac arrest include all of the following EXCEPT:
a. Hypervolemia
b. Hypoxia
c. Hypokalemia
d. Tension Pneumothorax
a. Hypervolemia
Common causes of cardiac arrest are known as the H's and T's and include:
hypovolemia (NOT hypervolemia), hypoxia, hydrogen ion excess (acidosis), hypo
or hyperkalemia, hypothermia, tension pneumothorax, tamponade, toxins, and
thrombosis (pulmonary or coronary). Correction of these causes can often reverse a
cardiac arrest.
You are providing ventilations using a Bag-mask device. Suddenly, you do not see
the patient's chest rise with the ventilation. You reposition the patient to ensure an
,open airway. When you attempt to ventilate, you do not see his chest rise. The
most likely cause of this is:
a. The bag-mask device is faulty
b. Airway obstruction
c. The patient has suffered an MI
d. Cardiac tamponade
b. Airway obstruction
The most likely cause of the failure of the chest to rise during ventilations is an
airway obstruction. Although a faulty bag-mask device is a possibility, it is
unlikely that it would fail in the middle of providing ventilations.
Preload refers to:
a. The volume of blood entering the left side of the heart
b. The volume of blood entering the right side of the heart
c. The pressure in the venous system that the heart must overcome to pump the
blood
d. The pressure in the arterial system that the heart must overcome to pump the
blood
b. The volume of blood entering the right side of the heart
, Preload is the volume of blood that enters the right side of the heart. This volume
stretches the fibers in the heart prior to contraction. Preload is commonly measured
as atrial pressure.
The patient is brought to the ED with an anterior ST-elevation myocardial
infarction (STEMI). You are assessing him for possible administration of
fibrinolytics. An absolute contraindication for this treatment is:
a. The patient's pain is not relieved by medications.
b. Symptoms began 36 hours before arrival.
c. The patient has received aspirin in the last 2 hours.
d. The patient had a previous MI 6 years ago.
b. Symptoms began 36 hours before arrival.
Fibrinolytic therapy is generally NOT recommended for patients whose symptoms
began more than 12 hours before arrival. Fibrinolytics should not be given if the
onset of symptoms was more than 24 hours before arrival UNLESS a posterior MI
is diagnosed. In this case, the MI was anterior.
According to American Heart Association ACLS guidelines, cricoid pressure
during intubation:
