Introduction Effective bag-mask ventilation (BMV) is a critical component of cardiopulmonary resuscitation (CPR) that can significantly impact patient outcomes. When performed correctly, BMV provides essential oxygenation and ventilation during cardiac arrest, supporting vital organ function until spontaneous circulation returns. However, despite its importance, BMV is frequently performed sub optimally, even by healthcare professionals. This article explores evidence-based techniques to optimize bag-mask ventilation during CPR, ensuring that rescuers can deliver effective ventilation while maintaining high-quality chest compressions. Understanding the Importance of Bag-Mask Ventilation in CPR Bag-mask ventilation serves as the cornerstone of airway management during resuscitation efforts. When cardiac arrest occurs, the delivery of oxygen to tissues ceases, resulting in rapidly developing hypoxia. Properly executed BMV addresses this critical issue by: Delivering supplemental ox...