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Methemoglobinemia After Liposuction - Diagnostic by Pulse Oximetry and Blood Gas Analysis.

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT01766999
Recruitment Status : Completed
First Posted : January 11, 2013
Last Update Posted : January 11, 2013
Information provided by (Responsible Party):
Hartmut Gehring, University of Schleswig-Holstein

Brief Summary:

Tumescent local anesthesia is a procedure which is frequently performed for plastic cosmetic surgical procedures such as liposuction. The subcutaneous adipose tissue is infiltrated with large volumes of a solution which also contain local anesthetics. However local anesthetics, can also lead to a marked production of methemoglobin. New generation pulse oximeters are able to measure SpMetHb non-invasivly.

The aim of this study is:

  1. to investigate multi-wavelength pulse oximetry as a monitoring method for patients at increased risk for methemoglobinemia.
  2. to illustrate MetHb concentrations over a course of 24 hours after a liposuction employing tumescent anesthesia has been carried out.

Condition or disease
- Methemoglobinemia

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Study Type : Observational
Actual Enrollment : 133 participants
Observational Model: Case-Only
Time Perspective: Prospective
Official Title: Methemoglobinemia After Liposuction Under Tumescent Local Anesthesia - Timecourse and Diagnostics by Pulse Oximetry and Blood Gas Analysis.
Study Start Date : August 2008
Actual Primary Completion Date : May 2009
Actual Study Completion Date : December 2010

SpMetHb > 8%
hemoximetric MetHb measurements triggered

Primary Outcome Measures :
  1. Correlation between hemoximetric and pulseoximetric measured methemoglobin [ Time Frame: 24 hours ]

Secondary Outcome Measures :
  1. Time course of MetHb concentration following liposuction employing tumescent anesthesia. [ Time Frame: 24 hours ]

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   Female
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population
- female patients scheduled for liposuction

Inclusion Criteria:

  • planned liposuction in tumescent local anesthesia

Exclusion Criteria:

  • hematologic disorders
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Responsible Party: Hartmut Gehring, Prof. Dr. med., University of Schleswig-Holstein Identifier: NCT01766999    
Other Study ID Numbers: MetHb02
First Posted: January 11, 2013    Key Record Dates
Last Update Posted: January 11, 2013
Last Verified: January 2013
Keywords provided by Hartmut Gehring, University of Schleswig-Holstein:
pulse oximetry
tumescent anesthesia
Additional relevant MeSH terms:
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Hematologic Diseases