低钠血症作为经蝶窦垂体瘤切除术的延迟并发症较为少见，其症状无特异性，常在出院后出现，且对机体具有潜在危险性。对1971年2月至1993年6月间经蝶窦进行垂体瘤切除术的2297例患者进行回顾性研究，术后电解质检查有低钠血症者53例，剔除有引起低钠血症其它原因者5例、在24小时 Hyponatremia is rarely seen as a delayed complication of transsphenoidal pituitary adenoma resection. Its symptoms are non-specific and often occur after discharge from the hospital. It is potentially dangerous to the body. A retrospective study of 2,297 patients who underwent transsphenoidal pituitary adenoma resection between February 1971 and June 1993 was performed. Postoperative electrolyte examination had hyponatraemia in 53 patients. Other causes of hyponatremia were excluded. 5 cases in 24 hours