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Cardiac Surgery CSC Exam Practice Questions and Answers
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Cardiac Surgery CSC Exam Practice Questions and Answers You are caring for a patient with an intra-aortic balloon pump and note blood in the tubing. Your initial action should be: A. Stop the balloon pump and notify the physician. B. Administer 100% oxygen to help displace the helium and notif...

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  • November 10, 2024
  • 149
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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Cardiac Surgery CSC Exam Practice
Questions and Answers

You are caring for a patient with an intra-aortic balloon pump and note blood in the

tubing. Your initial action should be:


A. Stop the balloon pump and notify the physician.


B. Administer 100% oxygen to help displace the helium and notify the physician


C. Leave the IABP running and notify the physician.


D. Purge the IABP manually to clear the blood from the tubing. - ANSWER✔✔-A.

Blood in the IABP tubing indicates a balloon rupture which can cause gas embolus.

However, helium is thought to be easily absorbed in the presence of balloon rupture

and oxygen is not generally indicated. The appropriate action is to disconnect the

balloon from the console or turn it on standby so the movement of helium is stopped

and notify the physician. The nurse will need to prepare for IABP removal and

replacement if needed.


When caring for a patient immediately post CABG the nurse recognizes that the most

likely cause of hypotension in the immediate post-operative period is




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A. Decreased circulating volume requiring no intervention unless persistent > 12

hours.


B. LV failure requiring an inotrope as first line treatment for any hypotension.


C. Decreased circulating volume representing the need for increased fluid

administration.


D. LV failure requiring an assist device. - ANSWER✔✔-C. Hypotension in the

immediate postoperative period is usually caused by low circulating volume and

responds to treatment with fluids. Volume is the first line treatment for hypotension.

If there is no immediate response to volume administration, 500 mg of IV calcium

chloride is often given. Existing vasopressors, such as norepinephrine, can also be

adjusted. It is important for hypotension to be promptly treated. Persistent

hypotension can result in hypoperfusion and end organ damage.


LV failure is not the most common cause of hypotension in the immediate post-

operative period and therefore inotropic agents are not first line agents used in the

treatment of hypotension. Hypotension that does not respond to fluid administration

may require an inotrope.


Preoperative clopidogrel should be held for how many days in the elective surgery

patient:


A.It does not need to be held.


B. 1-2 days.

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C. 5-7 days.


D. 30 days. - ANSWER✔✔-C. Clopidogrel inhibits the P2Y12 receptor on the platelet

for the lifetime of the platelet (10 days). Inhibited platelets cannot participate in

clotting, so the risk of bleeding increases with antiplatelet drugs. Most clinical trials

have identified an increased risk in bleeding, transfusion, and re-exploration when

clopidogrel is taken within 5 days of surgery, and no increase in bleeding or

transfusions when clopidogrel is stopped for > 5 days prior to surgery. Therefore,

clopidogrel should be stopped for 5 to 7 days prior to elective surgery. Emergent

surgery can be done regardless of when the last dose of clopidogrel was taken, but

will be associated with increased bleeding and need for platelet transfusions.


The term OPCAB refers to:


A. combination open heart surgery and percutaneous procedure.


B. CABG surgery without the use of cardiopulmonary bypass (CPB).


C. the use of thoracotomy instead of sternotomy.


D. patients who are fast tracked to be discharged in less than 5 days. - ANSWER✔✔-

B. OPCAB refers to off-pump coronary artery bypass. Surgery is done without CPB

but it still involves a median sternotomy.


MIDCAB (minimally invasive direct coronary artery bypass) is performed on a

beating heart without CPB and without the use of a median sternotomy. MIDCAB is

commonly done through an anterior thoracotomy incision and is used to bypass the

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mid to distal LAD with a left internal mammary artery (LIMA) graft. A

ministernotomy can also be used to gain access during MIDCAB.


Which of the following patients is at highest risk for neurological complications after

CABG?


A. A 63-year- old patient with a BMI of 30 undergoing OPCAB


B. A 85-year-old patient with an atherosclerotic aorta undergoing CPB


C. A previously healthy 50-year-old woman undergoing CPB


D. A 67-year-old man having a MIDCAB to the LAD with no known history of

hypertension - ANSWER✔✔-B. Severe atherosclerosis of the aorta, advanced age, use

of CPB, aortic cross-clamping, diabetes, hypertension, female sex, and history of

stroke place patients at high risk for neurological complications following cardiac

surgery. Other factors contributing to neurological complications include alcohol

abuse, heart failure, arrhythmias, and hyperglycemia.


The nurse caring for the post operative cardiac surgery patient recognizes the

following as potential contributors to post-operative vasodilation that can cause

hypotension:


A. Cooling that occurs while on cardiopulmonary bypass, and use of vasodilators

post op.


B. Use of norepinephrine or dopamine to support BP immediately post-op.



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