COPD, Asthma, and Respiratory Disease OPD Management: A Guide for Indian Clinic Doctors

Respiratory disease in India carries a unique burden: India has the world's highest COPD mortality, a massive asthma population, and 27% of the global tuberculosis burden. Every clinic doctor in India is, by necessity, a front-line respiratory physician.

Approach to Breathlessness in OPD

Breathlessness is never just "breathlessness" — the differential spans cardiac, respiratory, haematological, and metabolic causes. Structured assessment prevents missing dangerous diagnoses:

• Onset: Acute (minutes) → think PE, pneumothorax, acute LVF, anaphylaxis. Subacute (days) → pneumonia, AECOPD, pleural effusion. Chronic/progressive → COPD, heart failure, ILD, anaemia
• Position: Orthopnoea (worse lying flat) → heart failure. Platypnoea (worse sitting up) → hepatopulmonary syndrome
• Associated symptoms: Wheeze → asthma/COPD. Cough + fever → infection. Chest pain → PE/pneumonia/pneumothorax. Haemoptysis → TB/malignancy/PE
• Examination essentials: SpO₂ (every breathless patient), RR (most neglected vital sign), percussion (dull = effusion/consolidation; hyperresonant = pneumothorax), auscultation

Asthma: Diagnosis and Step-Up Therapy

Diagnosis

Asthma is a clinical diagnosis. Key features: episodic wheeze, breathlessness, chest tightness, cough (especially nocturnal) — variable and reversible. Confirm with spirometry if available: FEV1/FVC <0.7 with ≥12% and 200ml improvement post-bronchodilator.

In Indian children, be aware that GORD, rhinitis, and post-nasal drip are common asthma mimics. Treat comorbidities alongside asthma.

GINA 2024 Step-Up Therapy

COPD: Diagnosis, Staging, and Management

Diagnosis

Suspect COPD in any patient >40 with: chronic productive cough, exertional breathlessness, or history of smoking / biomass fuel exposure (chulha cooking — a major Indian COPD cause, especially in women). Confirm with post-bronchodilator spirometry: FEV1/FVC <0.7.

GOLD Staging and Treatment

All COPD patients regardless of stage: influenza vaccine annually, pneumococcal vaccine (PCV13 + PPSV23), pulmonary rehabilitation referral if available, smoking cessation counselling every visit.

Acute Exacerbation Management in OPD

AECOPD: acute worsening of respiratory symptoms beyond day-to-day variation. Decide: OPD treatment vs hospitalise?

Treat in OPD if all of: SpO₂ ≥92%, able to speak in full sentences, no accessory muscle use, no altered consciousness, good home support

Hospitalise immediately if any of: SpO₂ <90%, RR >30, HR >110, altered consciousness, inability to manage at home, failure to improve with initial treatment

OPD exacerbation protocol:

1. Salbutamol 2.5mg nebulisation, repeat at 20 minutes if needed
2. Ipratropium 500mcg nebulisation combined with salbutamol
3. Prednisolone 40mg OD for 5 days
4. Antibiotics if purulent sputum: Amoxicillin-clavulanate 625mg TDS or Doxycycline 100mg BD for 5 days
5. Reassess SpO₂ 1 hour after nebulisation before discharge

Inhaler Technique: The Most Overlooked Treatment Failure

Studies show 70–80% of patients use inhalers incorrectly. Before escalating treatment, always assess technique:

pMDI (pressurised metered-dose inhaler) — common errors in India:

• Not shaking before use
• Inhaling too fast (should be slow, over 3–5 seconds)
• Not holding breath for 10 seconds after inhalation
• Firing the inhaler before starting to inhale

A spacer device eliminates most pMDI technique errors and is recommended for all patients, especially children and elderly. A 500ml plastic bottle with a hole cut in the cap works as a spacer in resource-limited settings.

TB Screening in OPD: Every Cough for 2 Weeks

India has 2.8 million new TB cases annually — 27% of the global burden. Every clinic doctor is on the front line of detection.

TB treatment: Do not start treatment without microbiological confirmation if possible. Presumptive TB (CBNAAT negative but strong clinical suspicion): discuss with pulmonologist or DTCO. Nikshay portal: all diagnosed TB patients must be registered. Government provides free ATT (HRZE for 2 months, HR for 4 months) and monthly ₹500 nutritional support (Nikshay Poshan Yojana).

Community-Acquired Pneumonia in OPD

Use the CRB-65 score to decide OPD treatment vs admission:

• Confusion: new onset
• Respiratory rate ≥30/min
• BP <90 systolic or <60 diastolic
• Age ≥65

Score 0: OPD treatment. Score 1–2: Consider admission. Score ≥3: Hospitalise urgently.

OPD CAP treatment: Amoxicillin 500mg–1g TDS for 5 days (first choice). If atypical features (dry cough, bilateral infiltrates, younger patient): add Azithromycin 500mg OD for 3 days. Confirm improvement at 48 hours — failure to improve demands hospitalisation.

Keep respiratory patients on structured follow-up — SpO₂, symptom diary, inhaler reviews. Clinemo's appointment system helps schedule 3-month COPD reviews automatically →