Application of Capnography Monitoring on the General Care Nursing Unit (ETCO2)
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ClinicalTrials.gov Identifier: NCT00457080 |
Recruitment Status
:
Completed
First Posted
: April 5, 2007
Last Update Posted
: July 9, 2008
|
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Condition or disease | Intervention/treatment | Phase |
---|---|---|
Postoperative Complications | Device: Alaris ETCO2 monitor - cont. resp. rate, & apnea events | Not Applicable |
Measures: This is an IRB approved prospective trial beginning with randomization in the post anesthesia care unit (PACU) and continuing for thirty six hours post orthopedic surgical procedure. The patients are randomized into a capnography or standard of care group and the percentage of newly identified OSA patients were measured in each group using the criteria set forth by 2006 American Society of Anesthesiologist practice guideline (Anesthesiology 2006; 104:1081-93).
Background/Changes: Hospital complications are three times higher in patients with obstructive sleep apnea and the majority of these complications are related to opioid induced respiratory depression (Mayo Clin Proc Sept 2001:897-905). American Society of Anesthesiologist 2006 practice guideline for perioperative management of patients with obstructive sleep apnea (Anesthesiology 2006; 104:1081-93) lists the criteria for identifying undiagnosed obstructive sleep apnea. One of the risk factors in the guideline lists apnea (pauses in breathing). Capnography measures apnea episodes and continuously monitors respiration rate.
As previously described, five percent of the general population has obstructive sleep apnea (OSA) and the prevalence among patients requiring surgery is 9% (NEJM 1993; 328:1230-1235). Between 50-80% of OSA individuals are undiagnosed when presenting for surgery.
Study Type : | Interventional (Clinical Trial) |
Enrollment : | 60 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Masking: | None (Open Label) |
Primary Purpose: | Diagnostic |
Official Title: | Application of Capnography Monitoring on the General Care Nursing Unit |
Study Start Date : | October 2006 |
Actual Study Completion Date : | February 2007 |

- Increase the detection of undiagnosed obstructive sleep apnea (OSA)
- Increase the sensitivity for detection of respiratory depression (< 6 breaths per minute) in post operative patients on the general care nursing unit

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Ages Eligible for Study: | 18 Years and older (Adult, Senior) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | Yes |
Inclusion Criteria:
- Orthopedic surgical procedure
- Respiration rate < 10 breaths per minute requiring supplement oxygen
-
One of the following:
- body mass index >30
- history of snoring
- basal rate of opioid, and
- one event of RR <10 in the post anesthesia care unit.
Exclusion Criteria:
- COPD
- < 18 y/o
- A diagnosis of obstructive sleep apnea.

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00457080
United States, Texas | |
Presbyterian Hospital of Dallas | |
Dallas, Texas, United States, 75231 |
Principal Investigator: | Rob W Hutchison | Texas Health Resources |
Publications:
ClinicalTrials.gov Identifier: | NCT00457080 History of Changes |
Other Study ID Numbers: |
CAPNO-P806 |
First Posted: | April 5, 2007 Key Record Dates |
Last Update Posted: | July 9, 2008 |
Last Verified: | July 2008 |
Keywords provided by Texas Health Resources:
capnography safety opioids respiratory depression |
postoperative orthopedic OSA apnea |
Additional relevant MeSH terms:
Postoperative Complications Pathologic Processes |