for people ages 18-89 (full criteria)
study started
estimated completion
Susan J Dempsey(ucla)



The primary objective of this prospective, blinded observational study is to correlate assessment of sedation and respiratory status with capnography and pulse oximetry monitoring in hospitalized adult medical and trauma patients receiving patient-controlled analgesia (PCA) or nurse administered intravenous opioids for acute pain. Nursing assessment of respiratory status and sedation level will be correlated with capnography and pulse oximetry values as technology-supported monitoring to identify respiratory depression and opioid-induced sedation. The secondary objective is to identify capnography and pulse oximetry values that correlate with respiratory decompensation and opioid-induced sedation in medical and trauma patients on the general care floor.

Official Title

Incidence of Opioid-induced Respiratory Depression in Medical and Trauma Patients on the General Care Floor Receiving PCA and Nurse Administered Intravenous Opioids Monitored by Capnography and Pulse Oximetry: A Prospective, Blinded Observational Study


Respiratory Depression Sedation respiratory depression, opioid-induced sedation Respiratory Insufficiency Depression Depressive Disorder Analgesics, Opioid


You can join if…

Open to people ages 18-89

  1. Spontaneously breathing adults 18-89 years of age
  2. English speaking
  3. Receiving PCA or nurse administered IV opioids for medical or trauma-related pain
  4. Admitted to the general care floor from the emergency department

You CAN'T join if...

  1. Less than 18 or greater than 89 years of age
  2. Transfer to the general care floor from the ICU
  3. Receiving intrathecal or epidural opioids
  4. Inability or unwillingness to wear the etCO2 sampling line nasal cannula or pulse oximetry sensor
  5. History or diagnosis of a sleep disordered breathing syndrome
  6. Use of CPAP or BIPAP non-invasive ventilation as home regime
  7. Receiving non-invasive ventilation
  8. Presence of a co-morbidity that impacts respiration or ventilation (e.g COPD or pulmonary fibrosis)
  9. Unwilling or unable to participate
  10. . Member of a vulnerable population such as pregnant women or prisoners.

Lead Scientist


not yet accepting patients
Start Date
Completion Date
Poudre Valley Health System
Study Type
Last Updated