What are the eligibility criteria and step-by-step onboarding process for an adult patient with an acute COPD exacerbation to be enrolled in a hospital‑at‑home program?

Hospital-at-Home Enrollment for Acute COPD Exacerbation

Patients presenting to the emergency department with acute COPD exacerbation should be assessed by a respiratory physician and enrolled in hospital-at-home (HaH) if they meet eligibility criteria, with approximately 21-37% of ED presentations qualifying for this safe and effective alternative to inpatient care. 1, 2

Eligibility Criteria

Inclusion Requirements

• Adult patient (>18 years) with confirmed COPD diagnosis presenting to ED with acute exacerbation 1, 2
• Clinically stable enough for home management after initial ED assessment 1
• Adequate social support at home 1
• Community-dwelling (not in long-term care) 3
• Lives within the geographical service area of the HaH program 1

Absolute Exclusion Criteria (Must Screen For)

• Impaired consciousness or confusion 1
• Acidosis on arterial blood gas 1
• Serious co-morbidity requiring hospital-level care 1
• Inadequate social support at home 1
• Mild exacerbations manageable without admission 2
• Severe exacerbations requiring immediate hospital admission 2

Critical Pitfall: Direct GP referrals should NOT be used due to high rates of inappropriate referrals 1. All patients must be assessed in the ED or hospital setting first.

Step-by-Step Onboarding Process

Step 1: Initial ED Assessment (Day 0)

• Respiratory physician must assess patient in ED before HaH enrollment 1
• Confirm COPD diagnosis and acute exacerbation 1
• Check arterial blood gases for acidosis 1
• Assess mental status (consciousness, confusion) 1
• Evaluate co-morbidities and social support 1
• Use standardized assessment proforma/protocol 1

Step 2: Treatment Prescription & Discharge Planning

Once eligibility confirmed, prescribe home treatment package including:

• Nebulized bronchodilators 1
• Oral corticosteroids 1
• Antibiotics if indicated 1
• Supplemental oxygen if blood oxygen level is low 1
• All equipment (nebulizer, oxygen concentrator) sent home with patient 1

Step 3: Patient Education & Consent

• Explain HaH program using standardized patient information 1
• Inform patient that outcomes are "just as good, if not better" than hospital stay 1
• Provide mobile phone number for 24/7 access to respiratory team 1
• Obtain patient agreement (note: some eligible patients may refuse participation) 2

Step 4: Discharge Timing

Two models exist:

Admission Avoidance (Preferred for 24/7 services):

• Discharge directly from ED after assessment and prescription 1
• Patient goes home same day with treatment package 1

Early Supported Discharge (Preferred for most hospitals):

• Brief hospital admission (typically <72 hours) for initial stabilization 4, 5
• Discharge once clinically stable with stable arterial blood gases 5
• Patient must meet 5 pre-specified discharge criteria 6

Step 5: Home Care Initiation

• First home visit occurs the day after discharge 1
• Respiratory nurse specialist or physiotherapist conducts visit 1
• Leave illness/treatment details in home for GP reference 1
• Provide 24/7 contact number 1

Step 6: Ongoing Management

• Regular home visits continue until near-full recovery (typically 1-2 weeks) 1
• Monitor progress and adjust treatment as needed 1
• Hospital retains medical and legal responsibility throughout 2
• If patient fails to improve, readmit to hospital for further evaluation 1

Step 7: Discharge from HaH

• Respiratory practitioner formally discharges patient when exacerbation resolved 1
• Clinical responsibility transferred back to primary care via fax or email 1
• Remove loaned equipment or arrange long-term provision if needed 1

Service Design Considerations

Hours of Operation:

• 24-hour/7-day service maximizes admission avoidance for high-volume centers 1
• For lower-volume hospitals, align hours with peak admission times 1
• Services operating only weekday business hours will miss majority of patients (most COPD admissions occur early evening) 1

Expected Workload:

• Approximately 35-40% of ED COPD presentations will be eligible 1
• Of eligible patients, some will refuse participation 2
• One-fifth to one-sixth of all COPD admissions can be diverted depending on service hours 1

Team Composition Required:

• Consultant respiratory physician (medical lead) 1
• Respiratory nurse specialists (primary home visitors) 1
• Respiratory physiotherapists 1
• 24/7 on-call coverage 1

Important Caveat: The evidence base is from 2007 British Thoracic Society guidelines [1-1], representing the most comprehensive guideline-level evidence available, though more recent research supports these recommendations [3-7].