Exam (elaborations)
NUR 152 Exam 4 Questions And Answers
- Course
- Institution
NUR 152 Exam 4 Questions And Answers...
[Show more]
Content preview
NUR 152 Exam 4 Questions And AnswersWhat is the formula for cardiac output? - ANS stroke volume (SV) x HR
What 3 factors effect SV & workload of the heart? - ANS Preload
Contractility
Afterload
Define preload: - ANS volume of blood in ventricle following diastole
Define afterload: - ANS peripheral resistance against which LV must pump
What is contractility? & what 2 things is it influenced by? - ANS force of contraction
preload & stretch of myocardial fibers
What hormones will increase emptying in regard to contractility? - ANSWER epi & norepi
What is the most common cardiovascular disease associated with HF? - ANSWER
Systemic HTN
Describe the difference between L-sided HF & R-sided HF: - ANSWER L: Blood backs up
into LA, pulmonary veins & lung interstitium, alveoli
R: Blood backs up into RA and venous circulation
Name two causes of R-sided HF: -ANSWER L-sided HF & Cor Pulmonale (RV
hypertrophy)
, Which is most common: systolic or diastolic HF? -ANSWER systolic
Describe the differences between systolic & diastolic HF: -ANSWER S: Ventricle unable
to contract adequately to eject blood forward
LV becomes thin-walled, dilated, hypertrophied
Ejection Fraction <40%
D: ventricles are unable to relax & fill
Ejection fraction normal, but decreased CO
What is the range for a normal ejection fraction? - ANSWER 50-70%
What BNP value means that a pt does not have HF? - ANSWER <100
What BNP value means that HF is probable in a pt? - ANSWER 100-500
What BNP value means that HF is VERY probable in a pt? - ANSWER >500
What is the role of BNP as it relates to the heart? -ANSWER Released by ventricles in
response to fluid overload; promotes vasodilation and diuresis
What is the best way to evaluate activity tolerance? -ANSWER measure baseline VS &
then measure again after pt participates in activity
How does Digoxin work? -ANSWER Increases CO with (+) inotropics & decreases HR
What kind of pressure does the pleural space have? What would happen if the pleural
space were compromised, as by a bullet wound? - ANSWER The pleural space has
negative pressure pulling the lungs outward to inflate; if the space were compromised
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 Chrisyuis. 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)
83100 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now