Risk factors and clinical characteristics of hyponatremia in postoperative patients with aneurysm / 中国医师进修杂志

ABSTRACT

Objective To explore the risk factors of hyponatremia in postoperative patients with aneurysm and analyze the clinical characterstics in order to provide reference for clinic.Methods Participants included 120 patients who treated by aneurysm occlusion.Detailed recorded the patient's history and basic information.The patients with hyponatremia were in case group,and other patients were in control group.The risk factors of hyponatremia were analyzed.Results Forty-five patients (37.5％) occurred hyponatremia after operation.The level of natrium was (125.2 ± 10.1) mmol/L,the average time of appear hyponatremia was (8.2 ± 0.8) d,15 patients were in the first peak(postoperative 1-3 d),25 patients were in the second peak (postoperative 8-9 d),5 patients occurred hyponatremia at other time.Thirty-nine patients were internal carotid artery aneurysms,6 patients were vertebrobasilar artery aneurysms.Single factor analysis showed that the age,preoperative GCS scores,history of hypertension and diabetes,emergency operation,the size of arterial aneurysms,medium-sized aneurysm of artery between two groups had significant difference [(48.7 ± 8.4) years vs.(54.7 ± 8.4) years,(14.4 ± 3.1) scores vs.(10.3 ± 3.4)scores,26.7％ (20/75) vs.60.0％ (27/45),33.3％ (25/75) vs.62.2％ (28/45),32.0％ (24/75) vs.62.2％(28/45),(0.9 ±0.3) cm vs.(1.4 ±0.4) cm,24.0％(18/75) vs.42.2％(19/45),P ＜ 0.01 or ＜ 0.05].Multifactors regression analysis showed that preoperative GCS scores,emergency operation were the independent risk factors of hyponatremia (P＜ 0.05).Conclusions Postoperative 1-3 d and 8-9 d are the peak stage of hyponatremia.Different treatment should be adopted according the peak stage.Lower scores of preoperative GCS and emergency operation are the independent risk factors of hyponatremia.Clinical work need to pay more attention to the risk factors,appropriate treatment and prevention.