## **Core Concept**
Isolated systolic hypertension is a condition where the systolic blood pressure is elevated, while the diastolic blood pressure remains within a normal or lower range. This condition is common in older adults due to increased arterial stiffness. The management of isolated systolic hypertension aims to reduce the risk of cardiovascular events.

## **Why the Correct Answer is Right**
The most appropriate initial medication for a patient with isolated systolic hypertension, especially in the absence of other medical conditions, is a **Calcium Channel Blocker (CCB)** or an **Angiotensin-Converting Enzyme Inhibitor (ACEI)**. However, given the options and considering the patient's profile (70-year-old with isolated systolic hypertension and no other conditions), **Amlodipine**, a Calcium Channel Blocker, is often a preferred choice. CCBs are effective in reducing blood pressure, have a favorable effect on cardiovascular outcomes, and are generally well-tolerated in the elderly.

## **Why Each Wrong Option is Incorrect**
- **Option A:** While **Propranolol**, a beta-blocker, can be used in hypertension, it might not be the first choice for isolated systolic hypertension, especially in an elderly patient without other indications for beta-blockade (e.g., heart failure, post-myocardial infarction).
- **Option B:** **Spironolactone**, a potassium-sparing diuretic, is not typically a first-line agent for hypertension without other specific indications like heart failure or resistant hypertension.
- **Option D:** Although **Lisinopril**, an ACE inhibitor, is a good choice for many patients with hypertension, especially those with diabetes or heart failure, the choice between ACE inhibitors and CCBs often depends on patient-specific factors.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that in elderly patients with isolated systolic hypertension, the goal is to reduce systolic blood pressure to <150 mmHg. Calcium Channel Blockers like **Amlodipine** are often considered first-line due to their efficacy and safety profile in this population. ## **Correct Answer:** .