CEN Cardiovascular Emergencies
2025/2026 Exam Questions and Correct
Answers | New Update
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 - 🧠ANSWER ✔✔b. 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.
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 - 🧠ANSWER ✔✔B. 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.
You are caring for a 65 year old who collapsed outside of the hospital and was
brought in to the emergency department. During CPR, quantitative waveform
capnography shows a PETCO2 level < 10 mm HG. Which of the following is the
correct response to this finding?
a. Do nothing; this is normal.
b. Increase the amount of oxygen being delivered.
c. Attempt to improve the quality of CPR.
d. Decrease the amount of oxygen being delivered. - 🧠ANSWER ✔✔C.
Quantitative waveform capnography provides a good indication of the quality of
CPR. Levels < 10 mm HG indicate either a problem with the quality of CPR or
with the placement of the ETT. EtCO2 levels of ≤10 mmHg predicted death in
, adult patients with cardiac arrest. Measurement of EtCO2 varies directly with the
cardiac output produced by chest compression . Goal is 35-45mmg HG or 5-6%
CO2.
You are caring for an 85 year old and are having trouble establishing an
intravenous line. The ED physician asks for an intraosseous needle to establish an
IO line for medication administration. Which of the following is TRUE about the
intraosseous route of drug administration?
a. It should only be done on children under the age of 16.
b. It is preferred over the IV route of drug administration.
c. It should only be attempted after all other routes have been attempted.
d. Any drug or fluid can be administered via the IO route. - 🧠ANSWER ✔✔D.
Any drug that can be given via the IV route can also be given via the IO route.
Although commonly thought of in reference to pediatric patients, an IO route can
be established on any age person. IO access is the preferred route over the ETT but
not IV route; it is often the easiest route to establish while CPR is being done.
You have defibrillated the patient in ventricular fibrillation. The appropriate action
to take next is:
a. Do CPR for a 2-minute cycle.
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
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STATEMENT. ALL RIGHTS RESERVED
2025/2026 Exam Questions and Correct
Answers | New Update
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 - 🧠ANSWER ✔✔b. 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.
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 - 🧠ANSWER ✔✔B. 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.
You are caring for a 65 year old who collapsed outside of the hospital and was
brought in to the emergency department. During CPR, quantitative waveform
capnography shows a PETCO2 level < 10 mm HG. Which of the following is the
correct response to this finding?
a. Do nothing; this is normal.
b. Increase the amount of oxygen being delivered.
c. Attempt to improve the quality of CPR.
d. Decrease the amount of oxygen being delivered. - 🧠ANSWER ✔✔C.
Quantitative waveform capnography provides a good indication of the quality of
CPR. Levels < 10 mm HG indicate either a problem with the quality of CPR or
with the placement of the ETT. EtCO2 levels of ≤10 mmHg predicted death in
, adult patients with cardiac arrest. Measurement of EtCO2 varies directly with the
cardiac output produced by chest compression . Goal is 35-45mmg HG or 5-6%
CO2.
You are caring for an 85 year old and are having trouble establishing an
intravenous line. The ED physician asks for an intraosseous needle to establish an
IO line for medication administration. Which of the following is TRUE about the
intraosseous route of drug administration?
a. It should only be done on children under the age of 16.
b. It is preferred over the IV route of drug administration.
c. It should only be attempted after all other routes have been attempted.
d. Any drug or fluid can be administered via the IO route. - 🧠ANSWER ✔✔D.
Any drug that can be given via the IV route can also be given via the IO route.
Although commonly thought of in reference to pediatric patients, an IO route can
be established on any age person. IO access is the preferred route over the ETT but
not IV route; it is often the easiest route to establish while CPR is being done.
You have defibrillated the patient in ventricular fibrillation. The appropriate action
to take next is:
a. Do CPR for a 2-minute cycle.
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
3
STATEMENT. ALL RIGHTS RESERVED
