CCRN Practice(questions and completed answers 2022)
9 views 0 purchase
Course
CCRN Practice
Institution
CCRN Practice
You are monitoring a patient with a pulmonary artery catheter. You are unable to measure the patient's pulmonary artery wedge pressure. To obtain a value that corresponds to the pulmonary artery wedge pressure, you check the:
A. Right ventricular pressure
B. Pulmonary artery diastolic pressure
C...
you are monitoring a patient with a pulmonary artery catheter you are unable to measure the patients pulmonary artery wedge pressure to obtain
Written for
CCRN Practice
All documents for this subject (30)
Seller
Follow
EvaTee
Reviews received
Content preview
CCRN Practice
You are monitoring a patient with a pulmonary artery catheter. You are unable to
measure the patient's pulmonary artery wedge pressure. To obtain a value that
corresponds to the pulmonary artery wedge pressure, you check the:
A. Right ventricular pressure
B. Pulmonary artery diastolic pressure
C. Pulmonary artery mean pressure
D. Right atrial pressure - Answer B. Pulmonary artery diastolic pressure
When you cannot obtain a pulmonary artery wedge pressure, use the pulmonary artery
diastolic pressure to detect trends in the pulmonary artery wedge pressure. The
pulmonary artery diastolic pressure is usually 1 to 4 mm/Hg higher than pulmonary
artery wedge pressure. However, a patient with pulmonary disease has pulmonary
artery diastolic pressure influenced by higher right heart pressures, which do not
correlate with the pulmonary artery wedge pressure. (Recall that pulmonary artery
wedge pressure is a measure of left-sided heart pressure). The right atrial and right
ventricular pressures reflect right-sided, not left-sided, heart pressures. Use the
pulmonary artery mean pressure to calculate pulmonary vascular resistance.
You are monitoring a patient's pulmonary artery catheter. The pulmonary artery
waveform spontaneously changes to a pulmonary artery wedge pressure waveform.
Choose the correct intervention:
A. Immediately pull the catheter back to the right atrium
B. Monitor the patient for ventricular ectopy
C. Inflate the balloon with 1.5 cc of air
D. Check that the balloon is fully deflated - Answer D. Check that the balloon is fully
deflated
Your patient's hemodynamic parameters are: Right atrial pressure of 4 mm/Hg;
pulmonary artery wedge pressure of 7 mm/Hg; systemic vascular resistance of 1,000
dynes/sec/cm-5; cardiac index of 3.5 L/minute; and left ventricular stroke work index of
20 beats/minute. The heart function that concerns you most is:
A. Contractility
B. Preload
C. Cardiac output
D. Afterload - Answer A. Contractility
The normal value for a left ventricular stroke work index is 35 to 85 beats/minute. Your
patient's abnormally low left ventricular stroke work index of 20 beats/minute reflects a
problem with contractility in his or her left ventricle. Afterload is reflected in the systemic
vascular resistance, preload in the pulmonary artery wedge pressure, and cardiac
output in the cardiac index; these three values are within normal limits. You should be
concerned that your patient's poor cardiac muscle contractility will lead to insufficient
cardiac output. Observe your patient for fatigue, peripheral edema, and shortness of
breath (SOB).
The benefits of buying summaries with Stuvia:
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
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
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 EvaTee. 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.
