Overnight Oximetry Test

Oximetry is a test that measures your oxygen level and heart rate. This is part of the Obstructive Sleep Apnea (OSA) Screening process. When used overnight, a continuous measurement can be graphed. The patterns that are produced can assist in the diagnosing of Sleep Apnea.
Through this quick and easy test, a clinical diagnosis can be made by your physician. To be tested, Clinique RespiArt requires a referral from your physician that can be send by Email.

Overnight pulse oximetry (OPO) has proven to be an effective and beneficial technique to determine the cardiorespiratory status of patients in both the inpatient and outpatient settings. It is a cheap, safe, reliable, simple, and accurate method of patient monitoring as compared to the expensive and labor-intensive method of multichannel polysomnography for detecting sleep-disordered breathing. It provides accurate information about patient’s oxygenation status and also helps in monitoring the response to continuous positive airway pressure and in the surgical treatment of obstructive sleep apnea (OSA).

Overnight pulse oximetry (OPO)

Nocturnal pulse oximetry is a low-cost, safe, simple, convenient, noninvasive, and effective screening method for SDB in adults. It is readily and easily accessible with no risks or side effects to the patients and has decreased the waiting time of OSA diagnosis.
Apnea and hypopnea cause an arousal from sleep causing sympathetic activation, sleep disruption, snoring, fatigue, nocturia, morning headaches, and excessive daytime sleepiness. SDB leads to increased risk of motor-vehicle crashes. Several studies have shown that sleep apnea is associated with hypertension, stroke, heart failure, obesity, metabolic syndrome, diabetes, neurocognitive deficits, gastroesophageal reflux disease, and erectile dysfunction. Such health problems can reduce the quality of life. Chiang et al. have found OSA prevalence to be 60.9% among adult primary care population who are at risk of OSA. Hence, due to these effects of OSA and its increasing prevalence, quick and accurate screening, diagnosis and treatment becomes very important.
Several studies have been done to evaluate the validity and usefulness of OPO in the screening of OSA. Hang et al. studied a total of 616 patients with nocturnal oximetry and PSG study and showed that OPO is a satisfactory diagnostic tool for patients with severe OSA.

Overnight Oximetry test –  Steps to be done


If you’re uncertain if you should schedule an appointment with your physician regarding Sleep Apnea, you can start by completing our FREE online sleep assessment to determine if you could be in need of Overnight Pulse Oximetry(OPO) or Home Sleep Test (HST).

Visit Your Physician

If your assessment shows signs of sleep-disordered breathing or another sleep disorder, bring your results with when visiting your personal physician and discuss options of an overnight pulse oximetry test or Home Sleep Test (HST). If they believe you may be in need of it, they will order the test for you.

Test to be Done

Once the test has been ordered by your physician, Call Clinique RespiArt at 4389261886 to take an appointment to do the test.

Review Results with Sleep specialist

The Overnight Pulse Oximetry (OPO)Test report or Home Sleep Test (HST) report will be send directly to your physician for review. Your physician will follow up with you regarding the results and what is the next step to be done. Usually your doctor will assess your test results and your symptoms and decides if you need a treatment for sleep apnea.

Sleep Apnea Treatment Options

  • Positive Airway Pressure Devices
  • Oral Appliances
  • Neuro-stimulation Therapy
  • Positional Therapy
  • Surgery

Most common and most efficient treatment is the Positive Airway Pressure Devices CPAP.

We can provide you with these devices with a follow up your treatment and answering all your questions.

Online Sleep Assessment

RespiArt IconRespiArt

1305 Rue Mazurette Suite # 204, Montréal

5.0 48 reviews

  • Avatar Erin Leonard ★★★★★ a month ago
    I had a good experience at RespiArt with Al. He was nonjudgmental and willing to work around my situation. He is knowledgeable and makes things comfortable. Would highly recommend. :)
    Side note: For people with disabilities or limited
    … More mobility, I do not think there’s an elevator. There are two flights of stairs. Parking around the place can also be tricky.
  • Avatar ovi varga ★★★★ 4 months ago
    i am new at this stuff but the service i got from Mr. Al was very good and professional.
    I would recommend this to other in need for a CPAP machine...they are the only ones i found that would actually make monthly payments to help people
    … More who don't have $2000 + to give in one shot.
    Thank you very much for your services.
  • Avatar Maddalena Rainone ★★★★★ 4 weeks ago
    Incredible from the start.....I was sent to the wrong place by Google maps but found my way soon after..
    ....Almutaz reached me by phone while I was driving and I was so relieved...I didn't want to miss my appointment!!! He waited
    … More for me!!! Then at the office he educated me on sleep apnea cause I had so many questions.....he takes the time to explain!!! He gives great advice!!! Now we will see what the machine reads for me!! Keep you guys posted!!!!
  • Avatar M K ★★★★★ 7 months ago
    I encourage people to take their health seriously and consult with Al over at RespiArt. Not only he provides good advice for sleep apnea but he also cares about the BEST way to get treatment without breaking the bank. I would definitely … More recommend to anyone in need.
  • Avatar Gabrielle Marfoglia ★★★★★ 7 months ago
    I was very happy with my experience with RespiArt for a home sleep apnea testing: I was able to get an appointment very quickly; Almutaz took the time the explain the equipment and sleep apnea to me; the specialist called me 2 days later … More to go over my results. Everything was great :)