Dying on a plane is less likely than dying in a plane crash

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Oxygen on the airplane or in the hospital can be administered by nose or mask. The oxygen on the airplane wouldn't be any different then medical oxygen per se. It just depends on what kind of mask they use to deliver it and the flow rate. That will control the percentage of oxygen delivered.

The mask in the medical kit is going to be different from what drops out of the ceiling in an emergency. Regardless if you go into cardiac arrest like this lady did oxygen isn't going to make that big of a difference. Regarding the defibrillator I strongly suspect it worked but after it analyzed her heart rhythm it didn't deliver a shock. If she wasn't in a "shockable" rhythm then it would have instructed the crew to continue CPR and not deliver a shock. Something television and movies have trained everyone to believe is that defibrillators are used to shock people with a flat-line EKG (asystole, no electrical activity in the heart) and "jump start" the heart. In fact defibrillators are designed to basically STOP a heart in fibrillation (disorganized contraction) with the hope that it starts back up into an organized rhythm. Kind of like re-booting your computer. If someone is flat line there is no point in shocking them and an AED won't shock them if it's working properly.

While it's quite unfortunate for this lady the truth is that she probably got far quicker care then if she'd been sitting at home. The outcome was probably going to be the same regardless. The survival rate for out of hospital cardiac arrest is practically nil.

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