Heartsaver First Aid Part I Progress Indicator: Question 3 of 22 3.  You have finished inserting a Combitube into an unresponsive, nonbreathing adult female.  When attempting to inflate the cuff, you notice that the cuff fails to remain inflated.  What should you do next? Choices: Continue to inflate the cuff. Increase the tidal volume of each ventilation. Remove device and inspect cuff. Ventilate the patient's lungs.