Topical anesthesia-induced methemoglobinemia in bariatric surgery patients.
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.
Carrodeguas
Lester
L
The Bariatric Institute, Weston, FL, USA.
Szomstein
Samuel
S
Jacobs
Jeffrey
J
Arias
Fernando
F
Antozzi
Priscila
P
Soto
Flavia
F
Zundel
Natan
N
Whipple
Oliver
O
Simpfendorfer
Conrad
C
Gordon
Richard
R
Villares
Alexander
A
Rosenthal
Raul J
RJ
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
D010100:Oxygen; D008751:Methylene Blue