CEN certified emergency nurse EXAM A+ GRADE ASSURED COMPLETE SOLUTIONS AND VERIFIED ANSWERS LATEST UPDATE!!!!

NURS EXAM zm




Exam Solution
zm




CEN 2026 A+ GRADE ASSURED COMPLETE SOLUTIONS
zm zm zm zm zm zm zm




AND VERIFIED ANSWERS (98C9A)zm zm zm




QUESTION 1 zm




Preload refers to: zm zm



a. The volume of blood entering the left side of the heart
zm zm zm zm zm zm zm zm zm zm zm



b. The volume of blood entering the right side of the heart
zm zm zm zm zm zm zm zm zm zm zm



c. The pressure in the venous system that the heart must overcome to pump the bloo
zm zm zm zm zm zm zm zm zm zm zm zm zm zm zm



d
d. The pressure in the arterial system that the heart must overcome to pump the bloo
zm zm zm zm zm zm zm zm zm zm zm zm zm zm zm



d
ANSWER

b. The volume of blood entering the right side of the heart Preload is the volume of blood that ente
zm zm zm zm zm zm zm zm zm zm zm zm zm zm zm zm zm zm zm



rs the right side of the heart. This volume stretches the fibers in the heart prior to contraction. Prel
zm zm zm zm zm zm zm zm zm zm zm zm zm zm zm zm zm zm



oad is commonly measured as atrial pressure.
zm zm zm zm zm zm




QUESTION 2 zm




The team is performing CPR on a patient. The rhythm that will respond to an electric
zm zm zm zm zm zm zm zm zm zm zm zm zm zm zm



al shock is:
zm zm



a. Asystole
zm



b. PEA
zm



c. Ventricular fibrillation
zm zm



d. SVT
zm




ANSWER

c. Ventricular fibrillation Ventricular fibrillation and pulseless ventricular tachycardia are the two rhy
zm zm zm zm zm zm zm zm zm zm zm zm



thms that are considered to be "shockable" cardiac arrest rhythms. Although asystole and PEA are c
zm zm zm zm zm zm zm zm zm zm zm zm zm zm zm



ardiac arrest rhythms, they will not respond to electrical shock.
zm zm zm zm zm zm zm zm zm




QUESTION 3 zm

, When suctioning during a cardiac arrest, suctioning should be limited to which of the
zm zm zm zm zm zm zm zm zm zm zm zm zm zm



following?
a. Less than 5 seconds
zm zm zm zm



b. Less than 10 seconds
zm zm zm zm



c. Less than 20 seconds
zm zm zm zm



d. Less than 30 seconds
zm zm zm zm




ANSWER

b. Less than 10 seconds According to the 2010 BLS and ACLS guidelines, suctioning for longer than
zm zm zm zm zm zm zm zm zm zm zm zm zm zm zm zm zm



10 seconds may result in pulling too much oxygen out of the airways resulting in hypoxemia.
zm zm zm zm zm zm zm zm zm zm zm zm zm zm zm




QUESTION 4 zm




Possible causes of cardiac arrest include all of the following EXCEPT:
zm zm zm zm zm zm zm zm zm zm



a. Hypervolemia
zm



b. Hypoxia
zm



c. Hypokalemia
zm



d. Tension Pneumothorax
zm zm




ANSWER

a. Hypervolemia Common causes of cardiac arrest are known as the H's and T's and include: hypovo
zm zm zm zm zm zm zm zm zm zm zm zm zm zm zm zm



lemia (NOT hypervolemia), hypoxia, hydrogen ion excess (acidosis), hypo or hyperkalemia, hypother
zm zm zm zm zm zm zm zm zm zm zm



mia, tension pneumothorax, tamponade, toxins, and thrombosis (pulmonary or coronary). Correction
zm zm zm zm zm zm zm zm zm zm zm



of these causes can often reverse a cardiac arrest.
zm zm zm zm zm zm zm zm




QUESTION 5 zm




You are providing ventilations using a Bag-
zm zm zm zm zm zm



mask device. Suddenly, you do not see the patient's chest rise with the ventilation. Yo
zm zm zm zm zm zm zm zm zm zm zm zm zm zm



u reposition the patient to ensure an open airway. When you attempt to ventilate, you
zm zm zm zm zm zm zm zm zm zm zm zm zm zm



do not see his chest rise. The most likely cause of this is:
zm zm zm zm zm zm zm zm zm zm zm zm zm



a. The bag-mask device is faulty
zm zm zm zm zm



b. Airway obstruction
zm zm



c. The patient has suffered an MI
zm zm zm zm zm zm



d. Cardiac tamponade
zm zm




ANSWER

b. Airway obstruction The most likely cause of the failure of the chest to rise during ventilations is
zm zm zm zm zm zm zm zm zm zm zm zm zm zm zm zm zm zm



an airway obstruction. Although a faulty bag-
zm zm zm zm zm zm



mask device is a possibility, it is unlikely that it would fail in the middle of providing ventilations.
zm zm zm zm zm zm zm zm zm zm zm zm zm zm zm zm zm




QUESTION 6 zm




According to American Heart Association ACLS guidelines, cricoid pressure during intu
zm zm zm zm zm zm zm zm zm zm



bation: