Document Detail

Green urine after intragastric balloon placement for the treatment of morbid obesity.
MedLine Citation:
PMID:  14738690     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: The intragastric balloon is filled with saline and methylene blue dye, to detect balloon deflation early and prevent bowel obstruction, by monitoring the patient's urine for changes in color. METHODS: An intragastric balloon filled with 590 ml of saline plus 10 ml of methylene blue was endoscopically placed under sedation in a 22-year-old man with morbid obesity (BMI 42 kg/m2). 3 days later, the patient's urine changed to dark green, and, suspecting a leaking balloon, endoscopy was repeated under sedation. RESULTS: No signs of balloon deflation were seen, and the urine returned to normal color. The next day, the urine turned green again. 7 days later, the urine discoloration finally disappeared. CONCLUSION: Propofol, a sedative commonly used by anesthesiologists during endoscopic procedures, is known to have several side-effects, and urine discoloration is one of them, albeit rare. This benign side-effect must be known to obesity surgeons to avoid pointless medical expenditure, unnecessary balloon removal and distress for patients and clinicians.
Paolo Bernante; Francesco Francini; Fabio Zangrandi; Paola Menegon; Antonio Toniato; Paolo Feltracco; Maria Rosa Pelizzo
Publication Detail:
Type:  Case Reports; Journal Article    
Journal Detail:
Title:  Obesity surgery     Volume:  13     ISSN:  0960-8923     ISO Abbreviation:  Obes Surg     Publication Date:  2003 Dec 
Date Detail:
Created Date:  2004-01-23     Completed Date:  2004-05-04     Revised Date:  2007-12-05    
Medline Journal Info:
Nlm Unique ID:  9106714     Medline TA:  Obes Surg     Country:  Canada    
Other Details:
Languages:  eng     Pagination:  951-3     Citation Subset:  IM    
Department of Medical and Surgical Sciences, 3rd Clinic of General Surgery, University of Padua, Italy.
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MeSH Terms
Anesthetics, Intravenous / adverse effects*
Endoscopy / methods
Gastric Balloon / adverse effects*
Indicators and Reagents / adverse effects
Methylene Blue / adverse effects
Obesity, Morbid / therapy
Propofol / adverse effects*
Urination Disorders / etiology*
Urine / chemistry*
Reg. No./Substance:
0/Anesthetics, Intravenous; 0/Indicators and Reagents; 2078-54-8/Propofol; 61-73-4/Methylene Blue

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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