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Non-invasive mechanical ventilation with average volume assured pressure support (AVAPS) in hypercapnic encephalopathy

Non-invasive mechanical ventilation with average volume assured pressure support (AVAPS) in patients with chronic obstructive pulmonary disease and hypercapnic encephalopathy: prospective interventional match-controlled study

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
ISRCTN
Registry ID
ISRCTN05135218
Enrollment
22
Registered
2012-09-18
Start date
2009-02-01
Completion date
Unknown
Last updated
2017-06-05

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Infectious exacerbations of COPD and hypercapnic encephalopathy Respiratory

Interventions

11 patients with infectious exacerbations of COPD and hypercapnic encephalopathy with GCS < 10 were designated to receive BiPAP S/T with AVAPS. The control group was then selected from patients in t

Sponsors

San Francisco de Quito University (Universidad San Francisco de Quito) (Ecuador)
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Age > 40 years 2. COPD was diagnosed on the basis of the recommendations of the American Thoracic Society 3. Hypercapnic encephalopathy with GCS < 10 were designated to receive BiPAP S/T with AVAPS 4. The control group was then selected from patients in the emergency unit with infectious exacerbations of COPD and encephalopathy (GCS < 10). Patients were treated immediately and referred to us by doctors who were unaware of the study. Each patient was treated with NIV and was selected according to: Acute Physiology and Chronic Health Evaluation II (APACHE II) score within 4 points, age within 10 points, pH within 0.04, GCS within 2 points, and BMI within 2 points 5. Informed consent

Exclusion criteria

Exclusion criteria: 1. A face deformity 2. Obstruction of the upper respiratory tract owing to recent surgery or trauma 3. Alterations in the central nervous system not related to a hypercapnic encephalopathy 4. Cardiogenic pulmonary edema, pneumothorax, pulmonary thromboembolism, hemoptysis, or septic shock 5. Urgent intubation owing to cardiac and/or respiratory arrest, and hemodynamic instability with a systolic arterial blood pressure (BP) of less than 80mmH 6. Other neurological illness

Design outcomes

Primary

MeasureTime frame
Level of consciousness (Glasgow Coma Scale score)

Secondary

MeasureTime frame
1. Duration of mechanical ventilation 2. Hospital stay, and 3. Progression (exhaled tidal volume, inspiratory pressure, and arterial blood gases)

Countries

Ecuador

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Mar 24, 2026