What is Overnight oximetry?

Overnight oximetry is a medical test that measures the levels of oxygen in a person’s blood during the night while they sleep. It is commonly used to assess and monitor individuals with respiratory or sleep-related disorders, such as sleep apnea.

What is the process for Overnight oximetry?

Here’s how the overnight oximetry process generally works:

  1. Device Placement: A small, portable device called a pulse oximeter is attached to the patient. This device typically consists of a sensor that is clipped onto a finger, toe, or earlobe. Some devices may also include additional sensors for monitoring heart rate.
  2. Monitoring Period: The patient wears the oximeter throughout the night while they sleep. The device continuously measures the oxygen saturation levels in the blood, which is the percentage of hemoglobin molecules carrying oxygen.
  3. Data Recording: The oximeter records and stores data, including oxygen saturation levels and heart rate, over the course of the night. Some devices may also track patterns of oxygen desaturation (drops in oxygen levels) and the duration of these events.
  4. Analysis: After the monitoring period is complete, healthcare professionals analyze the recorded data. They look for patterns that may indicate sleep-related breathing disorders, such as sleep apnea. Oxygen desaturation events during sleep can help identify periods of disrupted breathing.
  5. Diagnostic Insights: The results of the overnight oximetry test can provide valuable information for diagnosing and managing various respiratory and sleep disorders. It may help healthcare providers determine the appropriate course of treatment or further testing.

Why Overnight oximetry?

One common application of overnight oximetry is in the evaluation of sleep apnea, a condition where a person’s breathing is repeatedly interrupted during sleep. The drops in oxygen saturation levels that occur during apnea episodes can be detected and analyzed through overnight oximetry.

It’s important to note that while overnight oximetry can provide useful information, it may not be as comprehensive as other sleep studies conducted in a sleep clinic. In some cases, healthcare professionals may recommend more extensive sleep studies, such as polysomnography, for a thorough evaluation of sleep-related issues.

Overnight oximetry

Overnight oximetry

Meet the team at NOVA Pulmonary Critical Care and Sleep Associates

Dr. Aditya Dubey

Dr. Aditya N Dubey, M.D, F.C.C.P. – Founder

Specialty:
Pulmonary, Critical Care and Sleep Medicine
Board Certified by American Board of Internal Medicine in the Subspecialities of Pulmonary Medicine, Critical Care Medicine and Sleep Medicine.  Learn more about Dr. Dubey

Dr. Petra Thomas

Dr. Petra Thomas, M.D.

Specialty:
Pulmonary Medicine
Board Certified by American Board of Internal Medicine in the Subspecialities of Pulmonary Medicine. Learn more about Dr. Thomas

Dr. Arman Murabia

Dr. Arman Murabia, M.D.

Specialty:
Pulmonary, Critical Care and Sleep Medicine
Board Certified by American Board of Internal Medicine in the Subspecialities of Pulmonary Medicine, Critical Care Medicine and Sleep Medicine. Learn more about Dr. Murabia

Rebekah B. Lee, AGNP-C

Rebekah Lee, AGNP-C

Nurse Practitioner.  Learn more about Rebekah Lee

Christine Amorosi, AGNP-C

Christine Amorosi, AGNP-C

Nurse Practitioner.  Learn more about Christine Amorosie

Office Locations

NOVA Pulmonary – Dulles
24430 Stone Springs Boulevard
Suite 200
Dulles, VA 20166

NOVA Pulmonary – Lansdowne
19415 Deerfield Avenue
Suite 301
Landsdowne, VA 20176

NOVA Pulmonary – Vienna
124 Park Street SE
Suite 203
Vienna, VA 22180