Severe intraoperative hyponatremia associated with the absorption of irrigation fluid during hysteroscopic myomectomy: a case report.

A case of severe hyponatremia with accompanying pulmonary edema and cardiovascular instability during a hysteroscopic myomectomy with general anesthesia is presented. The patient's sodium value decreased to 87 mmol/L. She was managed with aggressive maneuvers, including an infusion of 3% hypertonic saline. The patient's serum sodium increased to 113 mmol/L at the end of the operation, and it was increased up to 138 mmol/L at 48 hours. The patient recovered completely without neurologic sequelae.