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
Pharmacotherapyjournal_title
Pharmacotherapyauthors
Wurdeman RL,Mohiuddin SM,Holmberg MJ,Shalaby Adoi
10.1592/phco.20.7.735.35175subject
Has Abstractpub_date
2000-06-01 00:00:00pages
735-8issue
6eissn
0277-0008issn
1875-9114journal_volume
20pub_type
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