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Management of a 65-Year-Old with Asthma Exacerbation + Type 2 Diabetes

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Step 1 — Immediate Assessment

• Blood glucose immediately (comorbid T2DM + steroid use = hyperglycemia risk)
• ABG if SpO₂ <92% or patient fatiguing
• ECG (65-year-old, rule out cardiac cause of dyspnea)

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Step 2 — Acute Pharmacological Treatment

A. Bronchodilators (First-line)

1. Inhaled Short-Acting β₂-Agonist (SABA) — Salbutamol (Albuterol)
   • 2.5 mg via nebulizer every 20 minutes × 3 doses in the first hour (continuous if severe)
   • Or 4–8 puffs via MDI + spacer
   • This is the cornerstone of acute treatment
2. Ipratropium bromide (short-acting anticholinergic)
   • Add 0.5 mg nebulized with salbutamol in moderate–severe exacerbations
   • Combination gives better bronchodilation than SABA alone

B. Systemic Corticosteroids ⚠️ (Critical consideration in T2DM)

• Prednisolone 40–50 mg oral (or IV hydrocortisone 200 mg if unable to swallow)
• Duration: 5–7 days (no need to taper for short courses)
• Steroids are NOT withheld in diabetics — the exacerbation risk outweighs glycemic concern
• However: Corticosteroids cause significant steroid-induced hyperglycemia, which can appear within hours and persist for days
• ➡️ Monitor blood glucose 4-hourly while on steroids
• ➡️ Adjust antidiabetic therapy accordingly (see below)

C. Oxygen

• Target SpO₂ 94–98% (not 100% — hyperoxia not beneficial)
• Use controlled low-flow O₂ via nasal cannula or mask

D. Magnesium Sulfate (for severe/refractory cases)

• IV Magnesium Sulfate 2 g over 20 minutes for life-threatening or steroid-unresponsive exacerbations
• Acts as bronchodilator via smooth muscle relaxation

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Step 3 — Diabetes Management During the Exacerbation

• Basal-bolus insulin if on nothing by mouth or significantly hyperglycemic (BG >250 mg/dL consistently)
• Resume home antidiabetics once eating normally and steroids weaned

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Step 4 — Drugs to AVOID in This Patient

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Step 5 — Monitoring & Response Assessment

• Reassess after initial 1-hour treatment
• Check PEFR at 1 hour — improvement >50% predicted suggests good response
• Repeat SpO₂, HR, RR every 30–60 minutes
• Blood glucose monitoring every 4–6 hours

• PEFR <50% after 1 hour of treatment
• Persistent hypoxia (SpO₂ <92% on air)
• Failure to respond to initial treatment
• Prior ICU admission / near-fatal asthma history

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Step 6 — Long-Term Management After Stabilization

• Step up controller therapy if on inadequate regimen
• Inhaled Corticosteroid (ICS) + Long-Acting β₂-Agonist (LABA) — preferred for moderate–severe persistent asthma in this age group
• Review inhaler technique
• Provide written Asthma Action Plan

• Resume appropriate oral agents or insulin
• Review HbA1c — steroid use may have worsened glycemic control
• Consider referral to endocrinology if control is poor

• Annual influenza vaccine
• Pneumococcal vaccine (PCV13 + PPSV23)
• COVID-19 booster — both comorbidities are high-risk

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Summary Algorithm

Exacerbation → Assess severity → O₂ to SpO₂ 94-98%
                               → SABA nebulizer (salbutamol)
                               → Add ipratropium if moderate/severe
                               → Oral prednisolone 40-50mg
                               → CHECK BLOOD GLUCOSE immediately
                               → Hold metformin if hypoxic
                               → Monitor BG every 4-6 hrs
                               → If no improvement → IV Magnesium
                               → If still no response → ICU/intubation

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Complete Drug List with Doses — Asthma Exacerbation in a Diabetic Patient

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🔵 ACUTE / EMERGENCY DRUGS

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1. Salbutamol (Albuterol) — SABA ⭐ First-line

⚠️ Adverse effects: tachycardia, palpitations, tremors, hypokalemia — monitor electrolytes especially in diabetics

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2. Ipratropium Bromide — Short-Acting Anticholinergic

Add to salbutamol in moderate–severe exacerbation for superior bronchodilation. Stop once patient improves.

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3. Prednisone / Prednisolone — Systemic Corticosteroid ⚠️ Hyperglycemia Risk

⚠️ In T2DM: Steroids will raise blood glucose significantly within hours. Monitor BG every 4–6 hours. Do NOT withhold steroids — the exacerbation takes priority.

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4. IV Magnesium Sulfate — Refractory/Severe cases

Use when exacerbation is life-threatening or no response to SABA + steroids after 1 hour. Acts as smooth muscle relaxant (bronchodilator). One dose only in ED.

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5. Oxygen

Do NOT aim for 100% — controlled oxygenation is preferred.

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🟡 MAINTENANCE DRUGS (Long-term Controller Therapy)

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6. Inhaled Corticosteroid (ICS) — Backbone of Long-term Control

Start or increase ICS dose at discharge — reduces risk of future exacerbations.

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7. ICS + LABA Combination (Moderate–Severe Persistent Asthma)

Preferred long-term regimen in a 65-year-old with moderate–severe asthma.

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🟠 DIABETES MANAGEMENT DURING STEROID USE

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8. Short-Acting Insulin (Sliding Scale / Correction)

If patient is on oral antidiabetics only at home and develops steroid-induced hyperglycemia, short-acting insulin correction doses are first-line in hospital.

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9. Metformin — HOLD during acute exacerbation

Hold metformin if patient is hypoxic (SpO₂ <94%) or unwell — risk of lactic acidosis. Resume once patient is stable, eating normally, and SpO₂ is maintained.

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🔴 DRUGS TO AVOID

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Quick Reference Summary Table

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