title: Topical anesthesia-induced methemoglobinemia in bariatric surgery patients.
abstract: Methemoglobinemia leads to rapid oxygen desaturation, requiring prompt recognition and treatment. We present two severely obese patients who developed methemoglobinemia following the use of topical or local anesthetic. This complication was detected by analysis of arterial blood gases, and was successfully treated with methylene blue i.v. and 100% O2 supplementation.
authors.affiliation: The Bariatric Institute, Weston, FL, USA.
authors.forename: Lester
authors.initials: L
authors.lastname: Carrodeguas
authors.forename: Samuel
authors.initials: S
authors.lastname: Szomstein
authors.forename: Jeffrey
authors.initials: J
authors.lastname: Jacobs
authors.forename: Fernando
authors.initials: F
authors.lastname: Arias
authors.forename: Priscila
authors.initials: P
authors.lastname: Antozzi
authors.forename: Flavia
authors.initials: F
authors.lastname: Soto
authors.forename: Natan
authors.initials: N
authors.lastname: Zundel
authors.forename: Oliver
authors.initials: O
authors.lastname: Whipple
authors.forename: Conrad
authors.initials: C
authors.lastname: Simpfendorfer
authors.forename: Richard
authors.initials: R
authors.lastname: Gordon
authors.forename: Alexander
authors.initials: A
authors.lastname: Villares
authors.forename: Raul J
authors.initials: RJ
authors.lastname: Rosenthal
mesh_terms: D000713:Anastomosis, Roux-en-Y; D000772:Anesthesia, Local / Q000009:adverse effects* / Q000379:methods; D001784:Blood Gas Analysis; D015992:Body Mass Index; D005260:Female; D015390:Gastric Bypass / Q000379:methods*; D006801:Humans; D008708:Methemoglobinemia / Q000139:chemically induced* / Q000503:physiopathology; D008751:Methylene Blue / Q000627:therapeutic use; D008875:Middle Aged; D009767:Obesity, Morbid / Q000175:diagnosis / Q000601:surgery*; D010100:Oxygen / Q000627:therapeutic use; D011379:Prognosis; D018570:Risk Assessment; D016896:Treatment Outcome
chemical_list: D010100:Oxygen; D008751:Methylene Blue