Abstract
Cyanosis occurring during a transesophageal echocardiogram (TEE) is usually related to the respiratory depressant effect of the administered sedative. However, acute toxic methemoglobinemia related to topical benzocaine is a rare and not well recognized but potentially life threatening cause of cyanosis during or after TEE. A case of this condition is presented and the literature on its frequency, diagnosis and management is briefly reviewed.
MeSH terms
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Adult
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Anesthetics, Local / adverse effects
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Arteriovenous Shunt, Surgical / adverse effects*
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Benzocaine / adverse effects
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Cyclosporine / toxicity
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Echocardiography, Transesophageal / adverse effects*
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Humans
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Hypertension / chemically induced
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Kidney Failure, Chronic / chemically induced*
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Male
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Methemoglobinemia / diagnosis
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Methemoglobinemia / etiology*
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Methemoglobinemia / microbiology
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Renal Dialysis
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Staphylococcal Infections / diagnosis
Substances
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Anesthetics, Local
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Cyclosporine
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Benzocaine