What is a contraindication for the use of warfarin?

A. Instruct the patient to go to an emergency department because this is a hypersensitivity reaction.: A persistent cough from captopril is not an immediate hypersensitivity reaction; it is a common, non-life-threatening side effect. Emergency care is not required unless there are signs of angioedema or respiratory distress.

B. Schedule an appointment with the provider to discuss changing to an angiotensin II receptor blocker (ARB).: ACE inhibitors like captopril can cause a persistent dry cough due to increased bradykinin levels. Switching to an ARB avoids this side effect while maintaining antihypertensive efficacy. Discussing alternatives with the provider is the appropriate action.

C. Tell the patient to stop taking the drug immediately since this is a serious side effect of this drug.: Abrupt discontinuation without provider guidance may lead to uncontrolled hypertension. While the cough is bothersome, it is not immediately dangerous, and medication changes should be managed through the prescriber.

D. Reassure the patient that this side effect is nothing to worry about and will diminish over time.: The cough caused by captopril often persists as long as the drug is taken. Reassuring the patient without considering alternative therapy may prolong discomfort and reduce adherence to treatment.

A. Nausea: Nausea can occur with many medications but is not a primary concern with furosemide therapy. It does not reflect the major physiologic changes caused by the drug, such as fluid or electrolyte loss. Monitoring only for nausea may overlook more serious effects related to volume depletion.

B. Increased urinary output: This effect is expected because furosemide promotes diuresis by inhibiting sodium and chloride reabsorption. Higher urine output indicates that the medication is working rather than causing harm.

C. Dizziness Lightheadedness: Furosemide can cause significant fluid loss and lower blood pressure, leading to dizziness or lightheadedness from reduced circulating volume. These symptoms may indicate hypotension or dehydration, requiring prompt assessment. Monitoring for these effects helps prevent falls and cardiovascular instability.

D. Gastric upset: Mild gastric irritation may occur, but it is not a key adverse effect associated with furosemide. Instead, the drug’s main risks involve electrolyte imbalances and volume depletion. Focusing on gastric discomfort would not detect potentially serious complications.