Abstract：
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.
journal_name
Obes Surgjournal_title
Obesity surgeryauthors
Bernante P,Francini F,Zangrandi F,Menegon P,Toniato A,Feltracco P,Pelizzo MRdoi
10.1381/096089203322618858subject
Has Abstractpub_date
2003-12-01 00:00:00pages
951-3issue
6eissn
0960-8923issn
1708-0428journal_volume
13pub_type
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