100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
CCRN Questions And 100% Correct Answers $9.99   Add to cart

Exam (elaborations)

CCRN Questions And 100% Correct Answers

 8 views  0 purchase
  • Course
  • CCRN
  • Institution
  • CCRN

CCRN Questions And 100% Correct Answers...

Preview 4 out of 48  pages

  • October 25, 2024
  • 48
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • ccrn
  • CCRN
  • CCRN
avatar-seller
Braxton
CCRN Questions And 100% Correct Answers


A patient has had a large anterior myocardial infarction last month and developed a
ventricular aneurysm. He now has episodes of ventricular tachycardia that are not
prevented or converted with antidysrhythmic agents. An ICD is implanted. Four days
after surgery he develops VT. The ICD has delivered three shocks but has not converted
the rhythm. He is pulseless and apneic. Cardiopulmonary resuscitation is in progress.
What is the priority action now?



A.

IV epinephrine

Administration of

B.

amiodarone

C.

Defibrillate

D.

ICD reactivation - Answer Defibrillate

A 28-year-old female is brought to the critical care unit from the emergency department
with a diagnosis of asthma. Initial arterial blood gases on a 28% Venturi mask are as
follows:

pH 7.48

PaCO2 30 mm Hg

HCO3 24 mEq/L

PaO2 64 mm Hg



Which of the following repeated arterial blood gases on 40% oxygen indicate the
patient's condition is deteriorating?

,A.

pH 7.48, PaCO2 30 mm Hg, PaO2 68 mm Hg



B.

pH 7.46, PaCO2 32 mm Hg, PaO2 61 mm Hg



C.

pH 7.40, PaCO2 40 mm Hg, PaO2 62 mm Hg



D.

pH 7.39, PaCO2 30 mm Hg, PaO2 60 mm Hg Answer C.

pH 7.40, PaCO2 40 mm Hg, PaO2 62 mm Hg



This case represents stage II asthma. Option c is now in stage III asthma. The patient is
still tachypneic, but CO2 is beginning to be retained as evidenced by the elevation of the
PaCO2 into normal range. Options a and b remain in stage II. Option d shows a
respiratory alkalosis with a metabolic acidosis because you would have expected the
pH to be in an alkalotic range with the PaCO2 of 30.



A patient who is in alcohol withdrawal syndrome describes the swirls in the wallpaper as
being worms. This is an example of which of the following?



A.

Delusion



B.

Hallucination



C.

,Illusion



D.

Visual impairment - Answer C.

Illusion



An illusion is a misperception or misinterpretation of an actual external stimulus.
Illusions and hallucinations (a perception that has no actual actual external stimulus)
are common during alcohol withdrawal syndrome.



A patient comes to the emergency department with multiple gunshot wounds. He
requires massive transfusion for blood loss from chest and abdominal wounds. The
electrocardiogram should be observed closely for changes indicative of which of the
following?



A.

Atrioventricular block



B.

Hyperkalemia



C.

Hypercalcemia



D.

Hypomagnesemia - Answer Hyperkalemia



Banked blood is high in potassium due to hemolysis. Look for tall peaked T waves and
widening of the QRS complex. Other considerations with massive transfusion of banked
blood are hypocalcemia, hypothermia and decreased tissue oxygen delivery due to

, decreased levels of 2,3-diphosphoglycerate.



A 65-year-old woman presents with severe dyspnea 2 days after abdominal surgery. She
is admitted to the critical care unit. On 5 L of oxygen by nasal cannula, her arterial blood
gases are as follows:



pH 7.39

PaCO2 35 mm Hg

HCO3 19 mEq/L

PaO2 40 mm Hg

Arterial oxygen saturation 75%



Why does this patient have hypoxemia without hypercapnia?



A.

Because carbon dioxide is more diffusible than oxygen



B.

Because carbon dioxide has more driving pressure



C.

Because carbon dioxide is less diffusible than oxygen



D.

Because carbon dioxide excretion by the kidney is increased - Answer Because carbon
dioxide is more diffusible than oxygen



Carbon dioxide is 20 times more diffusible than oxygen. In conditions that affect
diffusion but not ventilation, one would expect the PaO2 to be low and the PaCO2 to be

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

Quick and easy check-out

You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.

Focus on what matters

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying these notes from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller Braxton. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $9.99. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

72042 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling
$9.99
  • (0)
  Add to cart