Intravenous potassium chloride should be given?
**Core Concept**
Intravenous potassium chloride administration is a critical aspect of managing hypokalemia, a condition characterized by low potassium levels in the blood. The goal is to gradually replenish potassium stores while minimizing the risk of cardiac arrhythmias and other complications.
**Why the Correct Answer is Right**
Potassium chloride should be given intravenously when a patient has severe hypokalemia, as defined by a serum potassium level below 3.5 mEq/L. This is particularly relevant in patients with cardiac arrhythmias or muscle weakness. The administration should be done slowly, typically over 1 hour, to prevent cardiac complications. The dosage is usually calculated based on the deficit, maintenance requirements, and ongoing losses.
**Why Each Wrong Option is Incorrect**
**Option A:** In patients with hyperkalemia, intravenous potassium chloride would worsen the condition, leading to cardiac arrest.
**Option B:** Oral potassium supplements are not sufficient for severe hypokalemia, as they may not provide a rapid enough correction.
**Option C:** Intramuscular potassium chloride is not recommended due to the risk of local tissue necrosis and uneven absorption.
**Clinical Pearl / High-Yield Fact**
Intravenous potassium chloride administration should be monitored closely, with continuous ECG monitoring, to promptly identify and manage potential cardiac complications.
**Correct Answer: D.