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Marie Garcia, age 67, reports that her chronic angina has been recurring even though she has been taking nitroglycerin sublingual tablets as prescribed. She tells the nurse that she used to store the tablets on a table by the window, and when she started to use a new batch of tablets, the problem subsided. What I would explain the ineffectiveness of the tablets?

Ms. Garcia developed unstable angina

Exposure to the elements (natural light) caused the drugs to lose their effectiveness

Ms. Garcia developed tolerance to the sublingual form of administration

Ms. Garcia did not follow the correct interval or duration of administration

Answer and Explanation

The Correct Answer is B

Explanation:

A. There is no evidence in the scenario to suggest that Ms. Garcia developed unstable angina.

B. Exposure to light, particularly sunlight, can degrade nitroglycerin, reducing its effectiveness over time.

C. There is no indication that Ms. Garcia developed tolerance to sublingual nitroglycerin in this scenario.

D. Ms. Garcia's storage method for the nitroglycerin tablets, not the interval or duration of administration, likely affected their effectiveness.

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Correct Answer is A

Explanation

A. Coronary heart disease (CHD) refers to the narrowing or blockage of the coronary arteries due to the buildup of plaque, leading to reduced blood flow to the heart muscle.

B. Cerebrovascular accident (CVA) refers to a stroke, which involves impaired blood flow to the brain rather than the heart.

C. Myocardial infarction (MI) is a heart attack, which occurs when blood flow to a part of the heart is blocked for a long enough time that part of the heart muscle is damaged or dies.

D. Angina pectoris is chest pain or discomfort caused by reduced blood flow to the heart muscle.

A. ibuprofen (Motrin) B. Ranitidine (Zantac) C. Digoxin (Lanoxin) D. Acetaminophen (Tylenol)

Correct Answer is C

Explanation

A. Ibuprofen is not typically contraindicated with calcium channel blockers.

B. Ranitidine is not typically contraindicated with calcium channel blockers.

C. Digoxin, a cardiac glycoside, can interact with calcium channel blockers, leading to increased levels of digoxin and potential toxicity.

D. Acetaminophen is not typically contraindicated with calcium channel blockers.

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What is the correct medical term used to describe impaired blood flow in the coronary arteries?

Correct Answer is A

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The patient is instructed when taking calcium channel blockers to use extreme caution when taking which of the following medications?

Correct Answer is C

Explanation

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