What indicates a successful bag-valve-mask (BVM) ventilation?

A successful bag-valve-mask (BVM) ventilation is indicated by adequate chest rise and fall. This physiological response signifies that the positive pressure being applied through the BVM is effectively inflating the lungs, allowing for proper oxygenation and ventilation of the patient. When chest rise is observed, it means that air is entering the lungs and that the airway is, for the most part, open and unimpeded. This is critical for ensuring that the patient's respiratory needs are being met, and that carbon dioxide is being expelled.

Other indicators of successful BVM ventilation can include adequate breath sounds upon auscultation and an improvement in the patient's overall condition, such as an increase in oxygen saturation levels. However, the most visually and immediately observable sign of successful ventilation during the procedure is the adequate rise and fall of the chest.