After you position a resuscitation mask on victim what do you do next?

After positioning the resuscitation mask on the victim, you should ensure a proper seal by adjusting the mask to fit snugly over the nose and mouth. Next, deliver rescue breaths by pressing the bag of the bag-valve-mask (BVM) or manually ventilating, ensuring that you observe the chest rise to confirm effective ventilation. Continue monitoring the victim's response and be prepared to adjust your technique as needed. If an advanced airway is available or necessary, prepare to transition to that as soon as possible.