1. Infectious gastroenteritis (bacterial, protozoal, viral)
2. Antibiotic-associated diarrhea (since already on Metrogyl)
3. Age-related colitis / IBS / malabsorption
4. Other causes: chronic infection, intestinal inflammation
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⚠️ Key Concerns
At 74 yrs, risk of dehydration and electrolyte imbalance is high.
Continuing diarrhea despite 5 days of Metronidazole → may not be amoebiasis; could be resistant infection or non-infectious cause.
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✅ Suggested Management
Supportive care (very important first):
ORS after every loose stool (or coconut water, rice water, buttermilk).
Soft diet: curd rice, khichdi, upma, soups.
Avoid milk (except curd/buttermilk), oily food, outside food.
Medicines (typical approach in elderly with persistent diarrhea):
1. Stop Metrogyl if no response in 5 days.
2. Continue Probiotic (Enterogermina or Saccharomyces boulardii)
– 1 cap/ampule twice daily × 5–7 days.
3. Ofloxacin + Ornidazole (O2 / OZ) 200 + 500 mg
– 1 tab twice daily after meals × 5 days
(common choice in adults for infective diarrhea).
4. Pantoprazole-Domperidone (e.g. DSR)
– 1 cap once daily before breakfast × 5 days (for gastritis/cramps).
5. Zinc 20 mg once daily × 7 days (improves gut healing).
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🔬 When to Investigate
Stool routine + culture (if no response in 3–5 days).
CBC,
electrolytes, renal function (in elderly with persistent diarrhea).
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🚨 Red Flags (hospital if any appear)
Weakness, dizziness, low BP, reduced urine → dehydration.
Blood/mucus in stool.
Persistent vomiting.
Fever >101°F.
Diarrhea not improving >7–10 days.
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👉 Summary:
This 74-year-old with persistent diarrhea needs hydration + stop Metrogyl + start Oflx+Ornidazole + probiotic + soft diet. Must monitor closely for dehydration.
Next Steps
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