Extensive laboratory testing is often performed in the emergency department evaluation of the new-onset seizure patient. To determine the utility of such testing, a prospective study of patients with a new-onset seizure presenting to the ED of an inner-city, university-affiliated teaching hospital was done. One hundred thirty-six patients were entered into the study between October 1984 and January 1988. All patients had uniform data collection performed. Pertinent historical information and physical examination findings were recorded on a standardized form before laboratory abnormality was a sole or contributory cause of the seizure disorder. These included four patients with hypoglycemia, four with hyperglycemia, two with hypocalcemia, and one with hypomagnesemia. Only two cases (hypoglycemia) were not suspected on the basis of findings on the history or physical examination. In ED patients, the incidence of a new-onset seizure due to a correctable metabolic disturbance is low. We conclude that, with the exception of the serum glucose, the extensive ED laboratory workup often done for the evaluation of a new-onset seizure is unnecessary. Further test ordering should be directed by the medical history and physical examination.

译文

在急诊科对新发癫痫患者的评估中,经常进行广泛的实验室测试。为了确定这种测试的实用性,对向市中心大学附属教学医院的ED呈递的新发癫痫发作患者进行了前瞻性研究。在1984年10月和1988年1月之间,有136名患者进入了研究。所有患者均进行了统一的数据收集。在实验室异常是癫痫发作的唯一或促成原因之前,将相关的历史信息和体格检查结果记录在标准化表格上。其中包括4名低血糖患者,4名高血糖患者,2名低钙血症患者和1名低镁血症患者。根据病史或体格检查发现,仅怀疑有2例 (低血糖)。在ED患者中,由于可纠正的代谢紊乱而引起的新发癫痫发作的发生率较低。我们得出的结论是,除血清葡萄糖外,通常不需要进行广泛的ED实验室检查以评估新发癫痫发作。进一步的检查顺序应由病史和体格检查指示。

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