A patient is taking a beta1-adrenergic drug to improve the stroke volume of the heart. The
nurse caring for this patient knows that this drug acts by increasing:
a. cardiac afterload.
b. cardiac preload.
c. myocardial contractility.
d. venous return.
ANS: C
Beta1-adrenergic agents help inc...
a patient is taking a beta1 adrenergic drug to improve the stroke volume of the heart thenurse caring for this patient knows that this drug acts by increasing
chapter 43 review of hemodynamicstest b
Written for
University of Bristol (UOB)
University of Bristol
RNSG 1301
All documents for this subject (1)
Seller
Follow
Allanswers34
Reviews received
Content preview
Chapter 43: Review of Hemodynamics
Test Bank
MULTIPLE CHOICE
1. A patient is taking a beta1-adrenergic drug to improve the stroke volume of the heart. The
nurse caring for this patient knows that this drug acts by increasing:
a. cardiac afterload.
b. cardiac preload.
c. myocardial contractility.
d. venous return.
ANS: C
Beta1-adrenergic agents help increase the heart’s stroke volume by increasing myocardial
contractility. Cardiac afterload is determined primarily by the degree of peripheral resistance
caused by constriction of arterioles; increasing afterload would decrease stroke volume. Beta1-
adrenergic agents do not affect afterload. Cardiac preload is the amount of stretch applied to
the cardiac muscle before contraction and is determined by the amount of venous return.
Beta1-adrenergic agents do not affect cardiac preload. Venous return is determined by the
systemic filling pressure and auxiliary muscle pumps and is not affected by beta1-adrenergic
agents.
2. A nurse is caring for a patient who is receiving a drug that causes constriction of arterioles.
The nurse expects to observe which effect from this drug?
a.Decreased stroke volume
b.Increased stroke volume
c.Decreased myocardial contractility
d.Increased myocardial contractility
ANS: A
Constriction of arterioles increases the load against which the heart must pump to eject blood.
Increased constriction of arterioles would decrease, not increase, the stroke volume of the
heart. Myocardial contractility is determined by the sympathetic nervous system, acting
through beta1-adrenergic receptors in the myocardium.
3. A patient with a history of hypertension is admitted for a procedure. If the patient’s arterial
pressure decreases, which clinical manifestation would the nurse expect to see?
a. Decreased heart rate
b. Increased heart rate
c. Decreased blood pressure
This study source was downloaded by 100000835818796 from CourseHero.com on 01-18-2022 00:35:20 GMT -06:00
https://www.coursehero.com/file/14433887/Ch43/
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 Allanswers34. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $9.78. You're not tied to anything after your purchase.
