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A physician can make a fairly reasonable estimate about whether sleep apnea is likely by looking at the history (including apnea observed by a partner), related symptoms (morning headache, daytime somnolence), and physical exam (for blockage in the pharynx, obesity, etc.). Accuracy can be improved by a simple overnight oxygen monitor which, if normal throughout the night, makes sleep apnea unlikely. So a complete $leep $tudy may not be needed in all cases.
However, if key findings are present, or symptoms are severe and persistent to the point of severely interfering with sleep, or if there is unexplained swelling, enlarged heart, etc. then the full study should be considered.
I would not try to second guess your physician's advice, though your ongoing concerns may be worth discussing again.
Be aware that there are some sleep centers which are less scientific and evidence-based than others. I have had more than a few patients who had "abnormal sleep studies" and were put on CPAP with expensive rentals and equipment purchases, lots of inconvenience, insurance-related effects and when the results were reviewed by an objective sleep specialist at an academic center, they were either questionable, technically inadequate, or downright within normal limits. Do your homework as you should with any "agenda-based" centers (those who might benefit disproportionately from finding a particular diagnosis) -- your primary doctor could be a great resource in getting you to someone good.
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Rich
Tampa, FL
ESR'd March 2010
As if you didn't know..If the above message contains medical content, it's NOT intended as advice, and may not be accurate, applicable or sufficient. Don't rely on it for any purpose. Consult your own doctor for all medical advice. | 
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