A 45 years old female patient presents with essential hypertension. She was started on ramipril, furosemide and aspirin. 2 weeks later she presented with well controlled blood pressure but developed persistent dry cough. The alteration that has to be done for her cough without affecting her controlled blood pressure is
**Core Concept**
The patient's persistent dry cough is likely an adverse effect of an angiotensin-converting enzyme (ACE) inhibitor, a class of antihypertensive medications that include ramipril. ACE inhibitors work by blocking the conversion of angiotensin I to angiotensin II, thereby reducing blood pressure.
**Why the Correct Answer is Right**
The patient's dry cough is a common side effect of ACE inhibitors, which can be attributed to the accumulation of bradykinin, a potent vasodilator. To manage the cough without compromising blood pressure control, the ACE inhibitor can be replaced with an angiotensin receptor blocker (ARB). ARBs block the action of angiotensin II at its receptor, thereby reducing blood pressure, without affecting bradykinin levels.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect as it does not address the cough and may worsen blood pressure control. Furosemide is a loop diuretic that can cause electrolyte imbalances and dehydration, which may exacerbate hypertension.
**Option B:** This option is incorrect as it does not address the cough and may worsen blood pressure control. Aspirin is an antiplatelet agent that can cause gastrointestinal bleeding and may interact with other medications, but it does not affect the cough caused by ACE inhibitors.
**Option C:** This option is incorrect as it does not address the cough and may worsen blood pressure control. Increasing the dose of furosemide can lead to electrolyte imbalances and dehydration, which may exacerbate hypertension.
**Option D:** This option is incorrect as it does not address the cough and may worsen blood pressure control. Adding a beta-blocker can worsen heart failure and may not address the cough caused by ACE inhibitors.
**Clinical Pearl / High-Yield Fact**
When switching from an ACE inhibitor to an ARB, it's essential to monitor the patient's renal function and potassium levels, as ARBs can cause hyperkalemia.
**Correct Answer:** C. Adding a beta-blocker can worsen heart failure and may not address the cough caused by ACE inhibitors.