hi mephisto,

Is the apnea related to diving? Coz any prolong apnea will have an after effect to not just to the motor skills, in fact to the whole brain...prolong apnea causes oxygen deprivation to the brain in general, be it the sensory part, or the motor part. Think of a comatose patient being in a vegetative state...

to demon: ni dah category ulam raja dah ni.

to Dive Doc: i am into freediving (breathholding) and thats where apnea comes into play. Voluntary apnea.
                   LMC and LOC is a fact of life we have to accept. Traning dictates that if a diver goes into LMC or LOC  certain procedures are to be done ( make sure air ways is clear to avoid droning, mouth to mouth, CPR etc).

The question is if a diver experiance LMC or LOC and is revive to normal, is there any physical after effects?

Second, is mucle cramps during breathhold is a sign of body going in to LMC?

Thanks.

Mephisto dude,

Regarding your Q, I think u have misunderstood between voluntary apnea and true apnea. Voluntary apnea is when you breathhold (e.g diving) and your body still has oxygen to burn...whereas true apnea is cessation of breathing, meaning your respiration stops and you have no oxygen to burn.

Any physical after effects depends on how long one is deprived of oxygen. The longer the LOC (which is to say he is unable to breath on his own), the more severe the physical after effects. That is why Basic Life Support is important in diving where you have to provide your ABCs (Airway, Breathing, Circulation...) to an unconscious diver as the first thing that come to your mind is that he is deprived of Oxygen.

As for ur second Q, Yup, it is! Muscle cramps occur when your muscle starts burning lactic acid as your body depletes itself of oxygen. The longer time you breathhold, the higher the chances of this occuring. As your body depletes itself of oxygen, so does your brain. And we know for a fact that 4 minutes without oxygen will make your brain cells die.

I hope i have answered your Q.

Thanks again.