Cerebrovascular stenosis manifestation in aircrews and risk factor discussion
10.3760/cma.j.issn.1007-6239.2016.04.008
- VernacularTitle:民航飞行人员脑血管狭窄的特点及危险因素探讨
- Author:
Qian LI
1
;
Jiwen JIANG
;
Zhanmin XU
;
Fei XIE
;
Xuejing WANG
Author Information
1. 中国民用航空医学中心空勤人员体检鉴定所,北京,100123
- Publication Type:Journal Article
- Keywords:
Cerebralvascular disorders;
Magnetic resonance imaging;
Risk factors;
Eligibility determination;
Civil aircrew
- From:
Chinese Journal of Aerospace Medicine
2016;27(4):268-273,322
- CountryChina
- Language:Chinese
-
Abstract:
Objective To analyze the clinical manifestation of cerebrovascular stenosis and relevant risk factors for aircrews,and to discuss the aviation medical appraisal.Methods One hundred and thirty four aircrews were assigned to stenosis group according to the MRA diagnosis.The location and severity of stenosis were analyzed.Two hundred and two aircrews,who were without cerebral vascular abnormalities,were randomly selected as the control group.The age,blood lipids,SBP,DBP,FBG,and BMI were compared between 2 groups.Logistic regression analysis was used to analyze the correlativity between risk factors and cerebral vascular stenosis.Results ①In 134cerebral artery stenosis aircrews,the middle cerebral artery stenosis accounted most for 36.57％ (49cases),the anterior cerebral artery stenosis accounted least for 6.72％ (9 cases).There was a significant difference between the incidences of unilateral cerebral vascular stenosis and bilateral cerebral vascular stenosis (x2 =25.40,7.82,P＜0.05).The unilateral cerebral vascular stenosis was most frequent despite the stenosis location (x2 =9.00-22.20,P＜0.01).②The stenosis severity showed significant difference among all locations of the cerebral vascular stenosis (x2 =27.00-155.70,P＜ 0.01).The incidence of mild cerebral vascular stenosis was significantly higher than that of moderate,severe cerebral vascular stenosis and cerebral vascular occlusion (x2=230.00,P＜0.01).③There were significant differences on SBP,DBP,TG,HDL-C and LDL-C between stenosis group and control group (t=1.99-2.89,P＜0.05),but no significant difference on age,blood glucose and BMI (P＞0.95).Age,DBP and LDL-C were the independent risk factors of cerebral vascular stenosis (z=2.43-3.55,P＜0.05).Conclusions Most of the cerebral vascular stenosis of aircrews is located at middle cerebral artery and cerebral internal carotid artery and the main manifestation is unilateral,mild and asymptomatic.For the aircrew with unilateral and asymptomatic stenosis,qualification and follow-up are suggested.But the aircrews who have severe cerebral vascular stenosis or any symptoms should be disqualified.The risk factors of cardiovascular and cerebrovascular should be closely supervised.
