How often should you be tested for sleep apnea?

This question was asked in Cleveland, Ohio on 01/11/2013.
Many years ago I needed a CPAP when I was much larger. I think I am still having an issue with my sleep. I do not sleep well and fell asleep at work today. Should I be retested? How often should you be retested for sleep apnea?

Doctors Answers (5)

Jana P. Kaimal, MD, FCCP
Answered on: 1/25/2013

It is possible that your machine needs to be retitrated. Please call us to learn more.

J. Douglas Hudson, MD, DABSM
Answered on: 1/15/2013

Being retested for sleep apnea is a good idea for those who have, as you have, lost or gained a large amount of weight. However, if you have been on an Auto titrating CPAP and have had regular downloads to assess efficacy and compliance, a repeat sleep study may not be necessary. If you are falling asleep in the daytime then the CPAP therapy may not be adequate or you have another sleep disorder to be considered (sleep deprivation, leg movement disorder, narcolepsy, etc.).

Jeannine Louise Gingras, MD
Answered on: 1/14/2013

Sounds as if you should be re-evaluated. There are many causes of being tired during the day. Specific to your question, you should be re-evaluated for sleep apnea based on symptoms.

SomnoDiagnostics, Inc.
Answered on: 1/14/2013

The rule of thumb is to have a re-titration ever 5 years if you are not having problems or if you start showing symptoms again. In your case, with a weight loss, the previous pressure is most likely not correct. The daytime sleepiness indicates the sleep apnea is not well controlled. We would typically schedule an appointment with Dr. Gordon Gibson our Board Certified Sleep Specialist to review your history and symptoms. If indicated, he would then order a re-titration study for you to obtain the CPAP pressure you currently need. You are welcome to call us at to schedule an appointment.

Courtney Whitney, DO
Answered on: 1/14/2013

For those pts who have previously been tested for sleep apnea and the results were negative: Repeat testing should be considered if snoring, witnessed apnea, daytime sleepiness are worsening. As we get older and or gain weight are likelihood of sleep apnea increases. Women's likelihood of sleep apnea also increases after menopause. For those who have been tested and the results were positive: Repeat evaluation should be performed if the effectiveness of therapy seems to have lessened. Downloadable CPAP machines and oximetry are other tools available to monitor the effectiveness of therapy. We like to see our patients in clinic at a minimum of once a year. Those who are doing well and have downloads or oximetry reflecting adequate therapy often do not need to repeat sleep studies.