CAJ | 학술논문

目的探讨提高侧管式代偿背心使用高度的可行性. 方法 6名健康志愿者戴保护头盔、供氧面罩,穿侧管式代偿背心、抗荷裤(不加压),进行供氧总压分别为110 mm Hg(1 mm Hg=0.133 kPa)、115 mm Hg、120 mm Hg和125 mm Hg的地面加压呼吸试验.观察受试者使用侧管式代偿背心对不同供氧总压的防护效果,记录受试者的心率、Ⅱ导联T波(TⅡ)、血氧饱和度、平均动脉压、每搏心输出量和每分心输出量的变化情况.利用SPSS 16.0统计软件,不同供氧总压组间数据比较采用随机区组方差分析;组内不同加压时间数据比较采用重复测量方差分析. 结果与加压前相比,加压后受试者心率(F=36.020～56.659,P＜0.01、TⅡ(F=9.365～14.104,P＜0.05)、血氧饱和度(F=31.143～127.011,P＜0.01)、平均动脉压(F=42.611～152.643,P＜0.01)和每搏心输出量(F=25.066～132.315,P＜0.01)均有显著性变化.受试者在110 mm Hg和125mmHg供氧总压时加压后每分输出量与加压前相比无明显变化(F=2.115、1.563,P＞0.05);115 mm Hg和120 mm Hg供氧总压时受试者加压后每分输出量与加压前相比有所上升(F=4.010、5.002,P＜0.05).110 mm Hg和115 mm Hg供氧总压时受试者耐受加压呼吸3 min;120 mm Hg供氧总压时受试者耐受加压呼吸2 min;12 mm Hg供氧总压时受试者耐受加压呼吸1 min. 结论采用总压115 mm Hg的供氧制度,使用侧管式代偿背心配合保护头盔、供氧面罩和抗荷裤(不充压)等装备,可以满足人体在18.0 km高度上应急加压供氧1 min.
목적 탐토제고측관식대상배심사용고도적가행성. 방법 6명건강지원자대보호두회、공양면조,천측관식대상배심、항하고(불가압),진행공양총압분별위110 mm Hg(1 mm Hg=0.133 kPa)、115 mm Hg、120 mm Hg화125 mm Hg적지면가압호흡시험.관찰수시자사용측관식대상배심대불동공양총압적방호효과,기록수시자적심솔、Ⅱ도련T파(TⅡ)、혈양포화도、평균동맥압、매박심수출량화매분심수출량적변화정황.이용SPSS 16.0통계연건,불동공양총압조간수거비교채용수궤구조방차분석;조내불동가압시간수거비교채용중복측량방차분석. 결과 여가압전상비,가압후수시자심솔(F=36.020～56.659,P＜0.01、TⅡ(F=9.365～14.104,P＜0.05)、혈양포화도(F=31.143～127.011,P＜0.01)、평균동맥압(F=42.611～152.643,P＜0.01)화매박심수출량(F=25.066～132.315,P＜0.01)균유현저성변화.수시자재110 mm Hg화125mmHg공양총압시가압후매분수출량여가압전상비무명현변화(F=2.115、1.563,P＞0.05);115 mm Hg화120 mm Hg공양총압시수시자가압후매분수출량여가압전상비유소상승(F=4.010、5.002,P＜0.05).110 mm Hg화115 mm Hg공양총압시수시자내수가압호흡3 min;120 mm Hg공양총압시수시자내수가압호흡2 min;12 mm Hg공양총압시수시자내수가압호흡1 min. 결론 채용총압115 mm Hg적공양제도,사용측관식대상배심배합보호두회、공양면조화항하고(불충압)등장비,가이만족인체재18.0 km고도상응급가압공양1 min.
Objective To explore the feasibility of raising the protection altitude of capstan compensatory vest.Methods Six healthy subjects,who wore helmet,mask,capstan compensatory vest and G suit (deflated),were chosen for positive pressure breathing test respectively with the total oxygen pressures of 110,115,120 and 125 mm Hg.The protective performance of capstan compensatory vest was observed.The changes of heart rate (HR),T wave amplitude (TⅡ),mean arterial pressure (MAP),stroke volume (SV),cardiac output (CO) and oxygen saturation (SaO2) were recorded during experiment.The comparison among different absolute oxygen pressure supplies was done by two-way analysis of variance (ANOVA) with SPSS 16.0 software.The analysis for different pressuring time but with same total pressure supply was processed by repeated measure ANOVA.Results HR were significantly different with that before pressure applied with all absolute oxygen pressures (F=36.020～56.659,P＜0.01),so did TⅡ (F=9.365～14.104,P＜0.05),MAP (F=42.611～152.643,P＜0.01),SV (F=25.066～132.315,P＜0.01),and SaO2 (F=31.143～127.011,P＜0.01).CO under 110 mm Hg and 125 mm Hg absolute oxygen pressure supply was not statistically different compared with that before pressure breathing (F=2.115,1.563,P＞0.05),but increased under 115 mm Hg and 120 mm Hg absolute oxygen pressure (F=4.010,5.002,P＜0.05).Subjects endured 3 min positive pressure breathing under 110 and 115 mm Hg absolute oxygen pressure and 2 and 1 min corresponding to 120 and 125 mm Hg supply.Conclusions With 115 mm Hg absolute oxygen pressure supply,the capstan compensatory vest system,which is with helmet,oxygen mask and G suit (deflated),would afford the protection at 18 km altitude for at least 1 min