أي مريض لا يناسبه استخدام قناع التهوية غير الباضعة (BiPAP)؟

Which client is unsuitable for non-invasive ventilation (BiPAP)?

1. An alert COPD client with respiratory acidosis
2. A client vomiting repeatedly with reduced consciousness
3. A stable client with sleep apnoea
4. An alert client with cardiogenic pulmonary oedema

Answer: B) A client vomiting repeatedly with reduced consciousness. BiPAP contraindications include reduced consciousness with an unprotected airway, ongoing vomiting, severe instability and facial trauma. Vomiting with low consciousness raises aspiration risk.