AVM Right Occipital Lobe

[rexlyn]

Have been diagnosed with an AVM in the Right Occipital Lobe, this has been confirmed by MRI and angiogram. Dr.'s have stated that diving with Nitrox is not an option and of course diving is not recommended. Why is the higher O2 level in Nitrox a bigger issue than the 21% O2 in Air?

Thank you , Rexlyn

 

[Saturation]

Have been diagnosed with an AVM in the Right Occipital Lobe, this has been confirmed by MRI and angiogram. Dr.'s have stated that diving with Nitrox is not an option and of course diving is not recommended. Why is the higher O2 level in Nitrox a bigger issue than the 21% O2 in Air?

Thank you , Rexlyn

Cerebral AVMs predispose to seizures. Higher 02 increases risk for seizures, but the mechanism for its cause is different than the AVM; the AVM induces seizures by mass effect, and the 02 by a chemical effect.

Nevertheless, the risk of seizures with an AVM is real, and the reason not to dive is this, but if you somehow are able to, nitrox provides another risk if high P02 are used.