nocturnal desaturations

Posted By cindy loftin on January 28, 1999 at 14:51:36:







I recently had an overnight sleep study done with the following results : Standard polysomnogram... 50% of study was noted to be wakefulness. REM sleep not entered. 12% of sleep was in stage I, 20% in stage II, and 17% was noted to be delta sleep. No obstructive apneic or hypopneic events. Throughout the study, however, the patient had multiple desaturation events with SaO2 falling to a low of 79%. These desaturations were not associated with apneic events. Only 65% of the study had an SaO2 greater than 93%. 10% of the study had an SaO2 between 86-92%. The patient was studied for 5 hours and 53 minutes. During the recording she demonstrated 0 obstructive apneas, 0 central apneas, and 0 hypopneas. The average cardiac rate was 118. The low cardiac rate was 21 and the maximumwas 240. There were 169 desaturation events (4% below baseline, 3 seconds minimum). I am 7 months pregnant and don't know if this could be caused by pregnancy. My OB/GYN doesn't know what to think and my neurologist isn't sure either. Please let me know if this a common occurence during pregnancy or if I should get another neurologist or what. Any input would be greatly appreciated.
Cynthia