• Mouth-to-mouth ventilation: The rescuer delivers exhaled air to victim, and exhalation by the victim is passive
• Mouth-to-nose ventilation
• Oropharyngeal airway with an external extension mouthpiece (it is often difficult to obtain a good mouth seal)
• Mouth-to-mask ventilation: The mask may include one-way valve to direct the victim's exhaled gases away from the rescuer and a side port for delivery of supplemental oxygen
• Self-inflating resuscitation bag
• Tracheal intubation: After placement of the tracheal tube, no pause should be made for ventilation because blood flow during CPR decreases rapidly when chest compressions are stopped

CPR = cardiopulmonary resuscitation.