How do I avoid gastric inflation during bag mask ventilation?

To avoid gastric inflation during bag-mask ventilation, ensure a proper mask seal on the patient's face to minimize air leakage. Use a slow, gentle squeeze of the bag to deliver breaths, aiming for a volume that produces chest rise without forcing air into the stomach. Additionally, consider the head position; the "sniffing" position can help align the airway and reduce the risk of gastric inflation. Finally, monitor the patient's chest movement and adjust your technique as needed.