The Overnight Sleep Study (OSA), or polysomnogram, is a recording that includes
measurements used to identify different sleep stages and classify various sleep
problems.
Patients are first seen in our Sleep Disorders Clinic, by one of our physicians
who are fellows of the American Sleep Disorders Association. Patients are then
scheduled for an overnight sleep study. The night of the study, the sleep technicians
apply a number of electrodes on the head and skin to record various activities
(brain wave, muscle movements, eye movements, breathing through the mouth and
nose, snoring, heart rate and leg movements). Flexible elastic belts will be
placed around the chest and abdomen to measure breathing and a pulse oximeter
is typically clipped to the index finger as well. All of these areas are monitored
during the study.
Should the sleep technician observe a breathing problem through the night,
he/she may awaken the patient to try a device that treats breathing problems.
Typically, the study is videotaped so that it can be observed, if need be,
during the staging and scoring of the study. Once the study is completed, a
follow-up appointment is scheduled in clinic to discuss and review the study
and all appropriate recommendations.
Throughout the process, the referring physician is sent all reports with recommendations.
Normally, patients that will be given the OSA test are pediatric (three plus
years of age) through the geriatric population. For the pediatric patients
(three through 15 years of age) a parent or guardian is to stay on the St.
Rita's campus throughout the night. Arrangements can be made in advance to
stay in one of the nearby examination rooms. Unless the child is very young,
parents/guardians are discouraged from staying in the same room/bed as the
child.
For all others, every attempt will be made to meet any special needs any patients
might have.
On the day of the study, caffeine (coffee, tea, cola and chocolate) should
be avoided after 2:00 pm. All medications should be taken as usual. Before
coming in for the study, hair should be washed and dried, however no hair products
(hair spray, gels or oils) should be used. It is suggested that the patient
pack an overnight bag for his/her comfort. In addition, patients are permitted
to bring their own pillow if they feel they will sleep better.
All patients are asked to arrive 30 minutes prior to their appointment time.
They are to report to Outpatient Registration and will be given directions
to the department once registration is completed.