In LVF, the drug which can be administered is:
**Core Concept**
Left ventricular failure (LVF) is a condition where the left ventricle of the heart is unable to pump enough blood to meet the body's needs. In managing LVF, it is essential to choose medications that do not further compromise the heart's function. This requires a careful selection of diuretics, vasodilators, and inotropic agents that can help alleviate symptoms without causing significant adverse effects.
**Why the Correct Answer is Right**
Digoxin is a cardiac glycoside that increases the force of cardiac contractions and slows the heart rate. It works by inhibiting the sodium-potassium ATPase pump, leading to an increase in intracellular calcium and thus enhancing myocardial contractility. This effect is particularly beneficial in patients with LVF, as it can improve cardiac output without significantly increasing oxygen demand.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is not provided, but typically, beta-blockers are contraindicated in acute LVF as they can worsen heart failure by reducing the force of contraction and increasing peripheral resistance.
**Option B:** ACE inhibitors are generally contraindicated in acute LVF due to their potential to cause a rapid decrease in blood pressure and cardiac output.
**Option C:** Vasodilators like hydralazine can be used in LVF, but they are not the first choice due to their potential to cause reflex tachycardia and worsen cardiac output.
**Clinical Pearl / High-Yield Fact**
Remember that digoxin is not a first-line treatment for LVF and should be used cautiously, as its benefits are largely confined to patients with atrial fibrillation or those with a high ventricular rate.
**Correct Answer:** C.