Our Care Sites
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Trinity Health IHA Medical Group
Serving Southeast Michigan
A family of four enjoys a nice fall day in the park. The young son is on the father's back, while the sister is on her mother's shoulders.
Trinity Health Medical Group
Serving West Michigan
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Probility Physical Therapy
Physical therapy services
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TrinityElite Sports Performance
Athletic development services
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MyChart

Nocturnal Polysomnogram

A young woman sleeps peacefully in bed. The bed has white sheets and there is a green plant in the background.

Overnight Study Measuring Your Airflow

The Nocturnal Polysomnogram (NPSG) is an overnight study at Trinity Health that will monitor:

  • Breathing
  • Heart rate
  • Snoring
  • Talking
  • Sleep stages
  • The number of times you wake up

Wires and other monitoring devices will be attached to your scalp, face, chest and legs for this study. There will be belts around your chest and abdomen, an airflow sensor placed under your nose, and a clip placed on your finger to measure your oxygen levels. This may feel a little overwhelming, but our technologist will explain the purpose of everything when they are applied. Please make sure you let your technologist know if you have any tape or latex allergies.