chinadan
Registered
Hi-
I have been diving 60 trouble-free dives on a regiment of Hyzaar (a blood pressure-lowering drug), Xanax.
I have had stress ECG, echocardiogram, MRI etc. and am cleared to dive.
On deeper dives (below 30m) I do consciously feel the onset of Nitrogen narcosis and would desrcibe it as a soothing, relaxing feeling.
Recently, my doc put me on Nasonex to treat sinusitis.
On my first dive (26C water/35m/air) after being put on the nasal spray (which I take in the morning), I felt a very unpleasant "tunnel vision" effect and felt on the edge of blacking out. I panicked enough to having to put my hand over reg and mask as to not blow them out.
The next day I did 2 more deep dives with similar results (EANx 31 and 33).
Each time I surfaced with a considerable frontal-lobe headache that started halfway through the dive (sort of in exchange for the tunnel-vision) and it would subside within 1/2 hour after surfacing.
I have changed regs to eliminate saltwater aspiration and would describe my breathing as normal, although syptoms seem to fit CO2 toxicity.
I have established the depth where the symptoms occur at about 20m. Above, no problems at all.
Anyone have an idea if this steroid nasal spray (which is the only variable I have changed since my last trip) could be responsible?
Thanks!
I have been diving 60 trouble-free dives on a regiment of Hyzaar (a blood pressure-lowering drug), Xanax.
I have had stress ECG, echocardiogram, MRI etc. and am cleared to dive.
On deeper dives (below 30m) I do consciously feel the onset of Nitrogen narcosis and would desrcibe it as a soothing, relaxing feeling.
Recently, my doc put me on Nasonex to treat sinusitis.
On my first dive (26C water/35m/air) after being put on the nasal spray (which I take in the morning), I felt a very unpleasant "tunnel vision" effect and felt on the edge of blacking out. I panicked enough to having to put my hand over reg and mask as to not blow them out.
The next day I did 2 more deep dives with similar results (EANx 31 and 33).
Each time I surfaced with a considerable frontal-lobe headache that started halfway through the dive (sort of in exchange for the tunnel-vision) and it would subside within 1/2 hour after surfacing.
I have changed regs to eliminate saltwater aspiration and would describe my breathing as normal, although syptoms seem to fit CO2 toxicity.
I have established the depth where the symptoms occur at about 20m. Above, no problems at all.
Anyone have an idea if this steroid nasal spray (which is the only variable I have changed since my last trip) could be responsible?
Thanks!