This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A patient who has begun using transdermal nitroglycerin for angina reports occasional periods of ... (Read 34 times)

cdr_15

  • Hero Member
  • *****
  • Posts: 546
on: Jul 23, 2018
A patient who has begun using transdermal nitroglycerin for angina reports occasional periods of tachycardia. The nurse will expect the prescriber to order:
 
  a. digoxin (Lanoxin) to slow the heart rate.
  b. immediate discontinuation of the nitroglycerin.
  c. periods of rest when the heart rate increases.
  d. verapamil as an adjunct to nitroglycerin therapy.

Question 2

A patient asks a nurse how nitroglycerin works to relieve anginal pain. The nurse correctly states, Nitroglycerin:
 
  a. dilates coronary arteries to increase blood flow to the heart.
  b. increases the oxygen supply to the cardiac muscle.
  c. increases ventricular filling to improve cardiac output.
  d. promotes vasodilation, which reduces preload and oxygen demand.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

carolinefletcherr

  • Sr. Member
  • ****
  • Posts: 313
Reply #1 on: Jul 23, 2018
Answer to Question 1

ANS: D
Nitroglycerin lowers blood pressure by reducing venous return and dilating the arterioles. The lowered blood pressure activates the baroreceptor reflex, causing reflex tachycardia, which can increase cardiac demand and negate the therapeutic effects of nitroglycerin. Treatment with a beta blocker or verapamil suppresses the heart to slow the rate. Digoxin is not recommended. Discontinuation of the nitroglycerin is not indicated. Resting does not slow the heart when the baroreceptor reflex is the cause of the tachycardia.

Answer to Question 2

ANS: D
Nitroglycerin dilates the veins, which reduces venous return to the heart, which in turn decreases ventricular filling. The resulting decrease in preload reduces the oxygen requirements of the heart. Nitroglycerin does not increase the blood flow or oxygen supply to the heart. An increase in ventricular filling would increase oxygen demand and result in increased anginal pain.


cdr_15

  • Member
  • Posts: 546
Reply 2 on: Jul 23, 2018
Gracias!

bblaney

  • Member
  • Posts: 323
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Liver spots have nothing whatsoever to do with the liver. They are a type of freckles commonly seen in older adults who have been out in the sun without sufficient sunscreen.

Did you know?

Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.

Did you know?

A recent study has found that following a diet rich in berries may slow down the aging process of the brain. This diet apparently helps to keep dopamine levels much higher than are seen in normal individuals who do not eat berries as a regular part of their diet as they enter their later years.

Did you know?

As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.

Did you know?

As many as 20% of Americans have been infected by the fungus known as Histoplasmosis. While most people are asymptomatic or only have slight symptoms, infection can progress to a rapid and potentially fatal superinfection.

Symptoms of a patient in shock Symptoms of a patient in shock
Patient registration form. Patient registration form.
Patient health history form Cont. Patient health history form Cont.
Patient with rheumatoid arthritis. Patient with rheumatoid arthritis.
Sandwich or capture enzyme immunoassay for patient IgM (double capture: IgM capture, Ag capture). Sandwich or capture enzyme immunoassay for patient IgM (double capture: IgM capture, Ag capture).
Paleogene and Neogene Periods Paleogene and Neogene Periods
Video: Elementary kinetics

For a complete list of videos, visit our video library