Benzocaine-induced methemoglobinemia during an outpatient procedure.

Abstract:

:Outpatient transesophageal echocardiography was performed in a 69-year-old man with a history of aortic valve repair. During the procedure the patient became markedly cyanotic and hypotensive. Oxygen saturation measured by pulse oximetry decreased from 97% to the mid-80s. The man's condition continued to deteriorate. On transfer to a critical care unit, blood analysis by co-oximetry showed methemoglobin saturation of 67.8%. The patient's condition improved significantly after intravenous administration of methylene blue 1 mg/kg. With increasing numbers of outpatient procedures performed under topical anesthesia, measures should be in place to deal with a potential life-threatening adverse event such as methemoglobinemia.

journal_name

Pharmacotherapy

journal_title

Pharmacotherapy

authors

Wurdeman RL,Mohiuddin SM,Holmberg MJ,Shalaby A

doi

10.1592/phco.20.7.735.35175

subject

Has Abstract

pub_date

2000-06-01 00:00:00

pages

735-8

issue

6

eissn

0277-0008

issn

1875-9114

journal_volume

20

pub_type

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