This communication reports a novel method of analyzing pericardial fluid and finding blood traces present based on the measurement of the dielectric properties at microwave frequencies. The experiment was performed by...This communication reports a novel method of analyzing pericardial fluid and finding blood traces present based on the measurement of the dielectric properties at microwave frequencies. The experiment was performed by cavity perturbation method in the S-band of microwave frequency with the pericardial fluid from healthy persons as well as from patients suffering from pericardial bleeding. It is noted that considerable variation in the dielectric properties of patient samples with the normal healthy samples and these measurements were in good agreement with clinical analysis. This measurement technique and the method of extraction of pericardial fluid are simple and both are non invasive. These results give light to an alternative in-vitro method of diagnosing onset pericardial bleeding abnormalities using microwaves without surgical procedure.展开更多
目的观察自制腹带全腹外加压对行脾切除贲门周围血管离断术患者术后近期腹腔出血的止血效果。方法选取西安交通大学第二附属医院普外科2005年1月至2015年8月,因肝硬化门静脉高压、脾功能亢进行脾切除、贲门周围血管离断术,术后近期出现...目的观察自制腹带全腹外加压对行脾切除贲门周围血管离断术患者术后近期腹腔出血的止血效果。方法选取西安交通大学第二附属医院普外科2005年1月至2015年8月,因肝硬化门静脉高压、脾功能亢进行脾切除、贲门周围血管离断术,术后近期出现腹腔出血,并经积极保守治疗无效的患者19例,应用腹部外加压治疗,观察加压治疗后2、4、8、12 h患者生命体征、休克指数、膀胱测压、输血量、腹腔引流量和颜色、血红蛋白和血小板水平变化。结果 18例患者经腹部外加压治疗以及保守治疗后止血成功,生命体征逐渐平稳,休克指数、输血量及腹腔引流量逐渐下降;血红蛋白、血小板水平逐渐上升,腹腔压力维持在20 mm Hg(1 mm Hg=0.133 k Pa)左右,与加压前比较差异均有统计学意义(P<0.05)。1例患者腹部外加压治疗后4 h引流量仍持续增加,中转开腹进行压迫止血后出血停止。无术后死亡患者。结论腹部外加压通过增加腹腔压力,使腹腔压力大于毛细血管压力,暂时控制出血,可以使行脾切除、贲门周围血管离断术术后近期腹腔出血患者度过凝血功能障碍的危险期,通过自身凝血功能的恢复,发挥内源性控制出血的作用,是一种有效的辅助止血方式。展开更多
文摘This communication reports a novel method of analyzing pericardial fluid and finding blood traces present based on the measurement of the dielectric properties at microwave frequencies. The experiment was performed by cavity perturbation method in the S-band of microwave frequency with the pericardial fluid from healthy persons as well as from patients suffering from pericardial bleeding. It is noted that considerable variation in the dielectric properties of patient samples with the normal healthy samples and these measurements were in good agreement with clinical analysis. This measurement technique and the method of extraction of pericardial fluid are simple and both are non invasive. These results give light to an alternative in-vitro method of diagnosing onset pericardial bleeding abnormalities using microwaves without surgical procedure.
文摘目的观察自制腹带全腹外加压对行脾切除贲门周围血管离断术患者术后近期腹腔出血的止血效果。方法选取西安交通大学第二附属医院普外科2005年1月至2015年8月,因肝硬化门静脉高压、脾功能亢进行脾切除、贲门周围血管离断术,术后近期出现腹腔出血,并经积极保守治疗无效的患者19例,应用腹部外加压治疗,观察加压治疗后2、4、8、12 h患者生命体征、休克指数、膀胱测压、输血量、腹腔引流量和颜色、血红蛋白和血小板水平变化。结果 18例患者经腹部外加压治疗以及保守治疗后止血成功,生命体征逐渐平稳,休克指数、输血量及腹腔引流量逐渐下降;血红蛋白、血小板水平逐渐上升,腹腔压力维持在20 mm Hg(1 mm Hg=0.133 k Pa)左右,与加压前比较差异均有统计学意义(P<0.05)。1例患者腹部外加压治疗后4 h引流量仍持续增加,中转开腹进行压迫止血后出血停止。无术后死亡患者。结论腹部外加压通过增加腹腔压力,使腹腔压力大于毛细血管压力,暂时控制出血,可以使行脾切除、贲门周围血管离断术术后近期腹腔出血患者度过凝血功能障碍的危险期,通过自身凝血功能的恢复,发挥内源性控制出血的作用,是一种有效的辅助止血方式。
