Question

Explain the treatment and management of diarrhea.

Hint:

If commercial ORS packets are unavailable, you can prepare an effective homemade rehydration solution by dissolving 6 level teaspoons of sugar and 1/2 level teaspoon of salt in 1 liter of clean drinking water. Be sure to measure accurately; excess sugar can worsen diarrhea through osmotic effects.

Answer 1

Step 1: Understanding the Physiological Risk of Diarrhea:
Diarrhea is characterized by the frequent passage of three or more loose or watery stools in a day. The primary clinical danger of acute diarrhea is not the infection itself, but the rapid, life-threatening depletion of water and vital electrolytes (sodium, potassium, chloride, and bicarbonate) from the body, leading to severe dehydration, metabolic acidosis, and cardiovascular shock.

Step 2: Rehydration Therapy (The Primary Intervention):

• Oral Rehydration Therapy (ORT): For mild to moderate dehydration, administering standard Oral Rehydration Salts (ORS) solution is the gold-standard treatment. The physiological basis of ORS relies on the sodium-glucose cotransporter-1 (SGLT-1) in the intestinal wall. Glucose actively promotes the absorption of sodium ions, which osmotically pulls water into the bloodstream, bypassing the fluid secretion caused by bacterial toxins.
• Intravenous Rehydration: For severe dehydration, unconsciousness, or patients unable to drink, immediate intravenous infusion of balanced crystalloid fluids (such as Ringer's Lactate or Normal Saline) is mandatory to restore circulating blood volume.

Step 3: Nutritional and Pharmacological Management:

• Zinc Supplementation: WHO and UNICEF recommend administering $20\text{ mg}$ of elemental zinc daily ($10\text{ mg}$ for infants under 6 months) for $10\text{ to }14$ days. Zinc helps repair the intestinal lining, boosts brush-border enzyme activity, improves local cellular immunity, and reduces the duration, severity, and future recurrence of diarrheal episodes.
• Continued Feeding: Avoid withholding food. Breastfeeding must continue uninterrupted. For older infants and children, offer frequent, small meals of easily digestible, energy-dense foods (such as bananas, rice kanji, boiled potatoes, toast, and diluted milk) to support intestinal recovery and prevent malnutrition.
• Selective Use of Antibiotics: Do not use antibiotics routinely for acute diarrhea. They are only indicated for specific conditions like documented cholera, amoebic dysentery, or severe bacterial dysentery (such as Shigellosis presenting with blood in the stool).