**Core Concept**
Ischemic heart disease involves reduced blood flow to the heart muscle, leading to potential damage or death of heart tissue. Certain medications can exacerbate this condition or worsen the underlying pathophysiology.

**Why the Correct Answer is Right**
The correct answer is a medication that can increase cardiac workload, cause vasospasm, or have other detrimental effects on the ischemic heart. For example, a medication that causes vasoconstriction could further reduce blood flow to the heart muscle, making ischemia worse.

**Why Each Wrong Option is Incorrect**
- **Option A:** This medication is actually used to treat hypertension and may be beneficial in ischemic heart disease by reducing blood pressure and cardiac workload.
- **Option B:** This medication can be used to treat angina and may be beneficial in ischemic heart disease by reducing the frequency and severity of angina attacks.
- **Option C:** This medication can be used to treat hypertension and may be beneficial in ischemic heart disease by reducing blood pressure and cardiac workload.
- **Option D:** This medication is not typically used in the treatment of ischemic heart disease and may actually be beneficial in certain cases by reducing cardiac workload or improving cardiac function.

**Clinical Pearl / High-Yield Fact**
Non-selective beta-blockers, such as propranolol, are not typically used in the treatment of ischemic heart disease and may actually worsen symptoms due to their negative inotropic and chronotropic effects.

**Correct Answer:** D. This medication is not typically used in the treatment of ischemic heart disease and may actually worsen symptoms due to its potential to increase cardiac workload or cause vasospasm.