Grauer S E, Giraud G D
Department of Medicine, Oregon Health Sciences University, Portland, USA.
J Am Soc Echocardiogr. 1996 Nov-Dec;9(6):874-6. doi: 10.1016/s0894-7317(96)90480-0.
Topical benzocaine spray is an anesthetic agent that is commonly used during transesophageal echocardiography (TEE). This agent is believed to be relatively safe because of very low systemic absorption. We report a case of toxic methemoglobinemia induced by benzocaine use for pharyngeal anesthesia during TEE. Physicians who perform TEE and use benzocaine or other topical anesthetics need to be familiar with this potential complication and have the necessary treatment readily available.
局部用苯佐卡因喷雾剂是一种麻醉剂，常用于经食管超声心动图检查（TEE）。由于全身吸收非常低，这种药物被认为相对安全。我们报告了一例在TEE期间使用苯佐卡因进行咽部麻醉引起的中毒性高铁血红蛋白血症病例。进行TEE并使用苯佐卡因或其他局部麻醉剂的医生需要熟悉这种潜在并发症，并随时准备好必要的治疗方法。
