IV Drugs for Enteric Fever

First-Line IV Options

Key Points

• Ceftriaxone (3rd-generation cephalosporin) is the most commonly used IV drug of choice, especially for:
  • Severe/complicated enteric fever
  • Multidrug-resistant (MDR) strains
  • Areas with high fluoroquinolone resistance (Indian subcontinent, Nepal, Africa)
• Ciprofloxacin IV remains effective for drug-susceptible strains with cure rates ~98%, but fluoroquinolones should not be used empirically in regions with decreased susceptibility.
• Chloramphenicol, Ampicillin, Co-trimoxazole — older IV options, now largely replaced due to widespread MDR strains.

When IV Therapy is Preferred

• Severe/complicated typhoid (intestinal perforation, peritonitis, altered consciousness)
• Inability to tolerate oral medication
• High-grade persistent fever not responding to oral therapy

Report Summary — Mrs. Sunita, 48F

Abnormal Findings at a Glance

⚠️ Note: Protein, Albumin, and Globulin all showing "00" is likely a lab reporting issue or severe hypoproteinemia — Mrs. Sunita's treating doctor must evaluate this urgently as it may indicate serious nutritional deficiency, liver disease, or nephrotic syndrome.

Tailored Diet Plan for Mrs. Sunita

Key Dietary Goals:

1. Reduce uric acid → Low-purine diet
2. Lower cholesterol & triglycerides → Heart-healthy diet
3. Increase protein & albumin → High biological value protein (carefully balanced with uric acid)
4. Control borderline blood sugar → Low glycemic index foods

✅ FOODS TO EAT

Proteins (High Quality, Low Purine)

• Egg whites (2–3/day) — excellent protein, zero purine
• Low-fat dairy — skimmed milk, curd/yogurt, paneer (low-fat) — reduces gout risk
• Tofu (moderate)
• Avoid red meat; limit chicken/fish to small portions 2–3×/week

Carbohydrates

• Whole grains: oats, brown rice, roti (whole wheat), millets (jowar, bajra)
• Avoid white rice, maida, refined flour products
• Avoid fructose-rich items: packaged juices, cold drinks, sweets with high sugar

Fats

• Olive oil / mustard oil for cooking (1–2 tsp/meal)
• Nuts (walnuts, almonds — small handful daily): raise HDL, lower LDL
• Flaxseeds / chia seeds: rich in omega-3, lower triglycerides
• Strictly avoid: ghee in excess, butter, vanaspati, fried foods, full-fat dairy

Vegetables (Low Purine, Heart-Healthy)

• Freely eat: lauki (bottle gourd), tinda, turai, carrot, capsicum, cucumber, beetroot, sweet potato
• Moderate: spinach, mushrooms, peas, cauliflower (have some purines but safe in moderation)
• Avoid: excess brinjal, tomato (if uric acid symptoms present)

Fruits

• Cherries — shown to lower uric acid
• Apple, pear, guava, papaya, jamun — low GI, heart-healthy
• Avoid: mango, banana, grapes, litchi in excess (high sugar → raises triglycerides)

Beverages

• Water: 3–4 litres/day — most important for uric acid excretion
• Coffee (1–2 cups/day) — shown to reduce gout risk (Harrison's p. 11837)
• Green tea, coconut water (unsweetened)
• Avoid: alcohol (especially beer), packaged drinks, full-fat milkshakes

❌ FOODS TO STRICTLY AVOID

🍽️ Sample Daily Meal Plan

💧 Hydration

Important Advisory

Tab Phenytoin — Dosing in a 14-Year-Old

A 14-year-old is treated as a pediatric/adolescent patient. Dosing is weight-based (mg/kg).

Oral Maintenance Dose (Chronic Epilepsy)

• 5 mg/kg/day × 40 = 200 mg/day
• Give as Tab Phenytoin 100 mg BD

Oral Loading Dose (Acute seizure control / initiation)

IV Loading Dose (Status Epilepticus)

Therapeutic Drug Monitoring

Key Monitoring Points

• Nystagmus at levels >20 mcg/mL
• Ataxia, slurred speech at >30 mcg/mL
• Gingival hyperplasia — common in adolescents; ensure good oral hygiene
• Hepatic enzyme induction — monitor if on other drugs
• CBC & LFT periodically
• Phenytoin has non-linear (zero-order) kinetics — small dose increases can cause large level jumps; titrate carefully

Summary

• Maintenance: Tab Phenytoin 100 mg BD (start) → titrate to 100 mg TDS if needed
• Target serum level: 10–20 mcg/mL
• Monitor: Drug levels, CBC, LFT, gum health

Patient Summary — Mrs. Ankita, 22F | G1, POG 30 Weeks | HBsAg Positive

Lab Findings Analysis

Elevated AST/ALT in the context of HBsAg positivity indicates active hepatitis B with hepatocellular inflammation. ALP elevation in pregnancy is partly physiological (placental ALP), but the degree here warrants monitoring.

Management Plan

1. Immediate Investigations Required

• HBeAg & Anti-HBe — determines infectivity
• HBV DNA viral load (quantitative PCR) — most critical; guides antiviral therapy decision
• HBV genotype
• CBC, coagulation profile (PT/INR)
• Ultrasound abdomen — assess liver parenchyma
• Repeat LFT in 2–4 weeks

2. Antiviral Therapy

• TDF has no teratogenicity, no increased risk of congenital malformations, prematurity, or low Apgar scores
• Lamivudine and Telbivudine have higher resistance rates → TDF preferred
• Entecavir and TAF — insufficient safety data in pregnancy, not recommended

At 30 weeks POG, antiviral therapy should be initiated now without delay if not already started, especially given raised transaminases.

3. Obstetric Management

• Mode of delivery: Cesarean section does NOT significantly reduce vertical transmission if neonatal prophylaxis is given — vaginal delivery acceptable
• Amniocentesis/invasive procedures: Avoid if possible to reduce transmission risk
• Breastfeeding: Generally permitted if infant receives HBIG + vaccine at birth

4. Neonatal Prophylaxis at Birth (Critical)

This combination of HBIG + vaccine reduces vertical transmission by >90%.

5. Additional Supportive Management

• High-protein diet — Albumin is low (3.30 g/dL); encourage eggs, dairy, legumes, dal
• Avoid hepatotoxic drugs: paracetamol in high doses, iron overload, alcohol (absolutely)
• Folic acid, calcium, vitamin D continuation
• Hepatology referral — co-management with gastroenterologist/hepatologist strongly advised
• Specialist antenatal follow-up every 2–4 weeks with repeat LFTs and viral load monitoring

Summary of Key Prescriptions

⚠️ Referral advised: This patient should be co-managed by an obstetrician + hepatologist. Elevated transaminases at 30 weeks with HBsAg positivity requires close monitoring for hepatic flare, which can worsen postpartum.

Tab Udiliv 500 mg (UDCA) in This Patient

✅ Yes — UDCA Can Be Given, with Appropriate Indication

What the Evidence Says

"Ursodeoxycholic acid (UDCA) should be given at 10–15 mg/kg to women with Intrahepatic Cholestasis of Pregnancy (IHCP) for symptomatic improvement" (Strong recommendation, moderate level of evidence)

Safety Profile in Pregnancy

Indication in This Patient

Since this patient has elevated transaminases (AST 74, ALT 86) with HBsAg positivity at 30 weeks, UDCA as a hepatoprotective adjunct alongside TDF is clinically justified.

Dosing

Combined Regimen for This Patient

⚠️ One Note