A nurse is preparing to administer vancomycin 500 mg PO daily divided into four equal doses. The amount available is vancomycin 125 mg capsules. How many capsules should the nurse administerwitheachdose?

A. Pleurisy:

Pleurisy is inflammation of the pleura, which is the lining surrounding the lungs. It can cause sharp chest pain that worsens with breathing. While pleurisy can be associated with conditions such as infections, pneumonia, or pulmonary embolism, it is not typically directly diagnosed or investigated using the brain (B-type) natriuretic peptide (BNP) test. The symptoms of pleurisy may include chest pain, especially with deep breathing, coughing, or sneezing.

B. Cardiomyopathy:

Cardiomyopathy refers to diseases of the heart muscle, which can lead to impaired heart function. Cardiomyopathy can cause symptoms such as fatigue, shortness of breath, chest pain, and fluid retention. While elevated BNP levels can be observed in some cases of cardiomyopathy, the BNP test is not specific to cardiomyopathy alone. It is often used to assess and diagnose heart failure, a condition that can result from various cardiac abnormalities, including cardiomyopathy.

C. Valve Dysfunction:

Valve dysfunction refers to abnormalities or malfunctions of the heart valves, such as stenosis (narrowing) or regurgitation (leakage). Valve dysfunction can lead to symptoms such as shortness of breath, chest pain, palpitations, and fatigue. While valve dysfunction can contribute to heart failure by causing pressure and volume overload on the heart chambers, the BNP test is primarily used to assess heart failure itself rather than specifically identifying valve dysfunction.

D. Heart Failure:

Heart failure is a condition in which the heart is unable to pump blood effectively to meet the body's needs. It can cause symptoms such as fatigue, shortness of breath, fluid retention (edema), and exercise intolerance. Elevated BNP levels are commonly observed in patients with heart failure, especially in cases of acute exacerbations or decompensated heart failure. The BNP test is used to assess and diagnose heart failure, as higher BNP levels indicate increased cardiac stress and volume overload.

A. The pain can be severe and sudden at rest: This statement is more characteristic of unstable angina, where chest pain can occur at rest or with minimal exertion and is often severe and unpredictable.

B. The pain persists with rest and organic nitrates: This statement is more indicative of unstable angina or variant (Prinzmetal's) angina. Stable angina typically improves with rest and nitroglycerin (an organic nitrate).

C. The pain usually lasts longer than 20 minutes: Stable angina pain typically lasts for a few minutes (usually less than 5 to 10 minutes) and resolves with rest or nitroglycerin. Pain lasting longer than 20 minutes may indicate an acute coronary syndrome such as unstable angina or myocardial infarction.

D. Exertion and anxiety can trigger the pain: This statement is accurate for stable angina. Exertion, such as physical activity or emotional stress, can trigger anginal pain in individuals with stable angina due to increased oxygen demand by the heart.