As mentioned earlier, you have the option of using a pocket mask, also known as a resuscitator mask or mask to, provide oxygen for a non breathing patient. This is one of three uses that have made the pocket mask highly recommended equip­ment for Rescue Scuba Divers.
 


Although you learn effective mouth to mouth rescue breathing in MEDIC FIRST AID, it's a good idea to have a pocket mask when giving ventilations to a non breathing patient, even without oxygen. A pocket mask simplifies getting an effective seal and patient head positioning, and it also reduces worries about disease transmission between you and the patient. The mask eliminates actual mouth contact, and the disposable one way valve directs patient's exhaled breath away from you.