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CEN Practice Test Questions and Answers (Latest Update 2025)
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CEN Practice Test Questions and Answers (Latest Update 2025)
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CEN Practice Test Questions andAnswers (Latest Update 2025)
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 - Correct Answer ✅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.
,CEN Practice Test Questions and
Answers (Latest Update 2025)
c. The patient has received aspirin in the last 2 hours.
d. The patient had a previous MI 6 years ago. - Correct
Answer ✅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.
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 - Correct Answer ✅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
,CEN Practice Test Questions and
Answers (Latest Update 2025)
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 - Correct Answer ✅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
, CEN Practice Test Questions and
Answers (Latest Update 2025)
b. Hypoxia
c. Hypokalemia
d. Tension Pneumothorax - Correct Answer ✅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
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