目的 探讨手动杠杆式胸外按压心肺复苏(CPR)装置对院内心肺复苏按压质量和复苏疲劳的影响。方法 将12名医学生志愿者分为手动杠杆式胸外按压CPR装置组(LDCPR)(n=6)和徒手标准CPR组(STCPR)(n=6)模拟院内心肺复苏场景进行CPR试验。LDCPR组采用手动杠杆式胸外按压CPR装置对模拟人进行连续6min连续胸外按压,STCPR组徒手对模拟人进行6min连续胸外按压。监测复苏期间按压的深度、频率以及按压者的心率和疲劳程度等变化。结果 随着连续胸外按压的进行,按压者的心率和疲劳程度都在不断增加,有效按压深度超过5 cm次数逐渐减少,但是在连续胸外按压的第4～6min,LDCPR组按压者的心率较STCPR组慢(P<0.05),疲劳程度较轻(P<0.05),有效按压的比例更高(P<0.05)。按压频率两组比较无明显差异。结论 在本模拟人试验中,手动杠杆式胸外按压CPR装置可减轻按压者疲劳,有助于提高院内CPR时长时间胸外按压的质量。

Objective We aimed to investigate simulated in-hospital cardiopulmonary resuscitation (CPR) quality and rescuer fatigue of external chest compression-only CPR by a manual leverage device(LDCPR). Methods All 12 volunteers (medical staffs: male 6 and female 6) were randomized to standard CPR by hand(STCPR)group (n=6)or LDCPR group(n=6). At STCPR group, continuous external chest compression-only was performed for 6 minutes to simulate in hospital cardiopulmonary resuscitation on a manikin; at LDCPR group, compression-only was performed for 6 minutes by a leverage device on a manikin. We measured blood pressure of the volunteers before and after performing each CPR technique, volunteers self-report fatigue scale and continuously monitored heart rate (HR) of the volunteers during each CPR technique by smart ring. CPR quality measures included chest compression rate and depth. Results During continuous external chest compression-only CPR, compressor's heart rate and fatigue scale were rising continuously, and percent of compress depth >5 cm were declining, too.Compressor's heart rate and fatigue scale were higher in the STCPR group than in the LDCPR group (P<0.05) during the fourth to sixth minutes CPR (P<0.05). Percent of compress depth > 5 cm was higher in the LDCPR group than in the STCPR group (P<0.05) during the fourth to sixth minutes of CPR (P<0.05).Compress rate had not differed between the 2 groups during CPR. Conclusion In the manikin study, manual leverage external chest compress device may reduce fatigue scale and improve long term compression quality during in-hospital cardiopulmonary resuscitation.

目的 探讨良性前列腺增生(BPH)并急性尿潴留(AUR)后血清肌酐、前列腺特异抗原(PSA)及其膀胱尿道功能的相关性及其临床意义。方法 对随机选择的36例已留置尿管48h以上的BPH并AUR患者进行尿流动力学检查,且同日行血清肌酐、PSA检测并分为两组:DI(逼尿肌不稳定)组(22例)和无DI组(14例),分析血清肌酐、PSA与膀胱功能各因素的相关性。结果 36例患者中逼尿肌收缩力很弱(VW)占10例,其游离PSA(fPSA)均<1.0 ng/mL,DI组中血清肌酐与膀胱顺应性、总PSA(tPSA)有相关性(r分别为0.406、-0.340,P值分别<0.01、0.05);DI幅度与膀胱顺应性、逼尿肌收缩力、tPSA有相关性(r分别为-0.309、0.677、0.304,P值分别<0.05、0.01、0.05);DI组与无DI组的fPSA与逼尿肌收缩力均有相关性(r分别为0.375、0.464,P值均<0.05)。DI组血清肌酐与fPSA、DI幅度、逼尿肌收缩力无相关性(r分别为-0.282、-0.301、-0.184,P值均>0.05);无DI组tPSA与血清肌酐、膀胱顺应性、逼尿肌收缩力无相关性(r分别为0.278、0.348、0.365,P值均>0.05)。结论 BPH并AUR患者的血清fPSA越低(<1.0 ng/mL),间接反映逼尿肌收缩力受损越严重,DI影响tPSA及肌酐水平。