An Ambu bag, also known as a single-use manual resuscitator or bag‑valve‑mask (BVM), is a hand-held device used to deliver positive-pressure ventilation to patients who are not breathing adequately or at all. It is essential in emergency care, ambulances, hospitals, and during CPR
🔹 Main Components:
Self-inflating bag – made of PVC
One-way valve – directs airflow to the patient and prevents rebreathing
Face mask – fits over nose and mouth; comes in sizes: adult, pediatric, infant
Pressure relief valve – protects lungs from over‑pressure (e.g., 40–60 cm H₂O)
Oxygen reservoir & inlet – allows connection to high‑flow O₂, boosting delivered FiO₂ up to ~100%
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