微创经皮肾取石术中肾盂内压测量

目的 探讨微创经皮肾取石术(MPCNL)中肾盂内压测量方法及其意义.方法 通过压力传感器连接逆行置入肾盂的5Fr输尿管导管与Mindray PM9000型监护仪有创压力测量通道,实施经皮肾取石术中肾盂内压测量,增加软件模块后的测压系统每秒采集1次数据,并将数据实时导入计算机数据库.结果 共对112例MPCNL术中肾盂内压进行测量,分析了MPCNL术中肾盂内压的影响因素以及肾盂内压与术后发热的关系.结论 MPCNL术中肾盂内压总趋势小于一般所认为的引起肾实质反流的极限[30 mm Hg(1 mm Hg=0.133 kPa)].任何引起灌注液流出受阻的因素,均可引起肾盂内压增高,术者应该在术中注意调整操作手法,降低肾盂内压.术后发热与MPCNL导致的肾盂内压短暂性增高无明显相关,但总手术时间过长,肾盂内高压状态(≥30 mmHg)累积到一定限度(50 s以上),总平均肾盂内压升高(20 mm Hg以上),将引起术后发热率增加.

Abstract：

Objective To introduce a new method to measure renal pelvic pressure in vivo during minimally invasive percutaneous nephrolithotomy (MPCNL), and investigate its clinical significance.Methods Renal pelvic pressure was measured by baroceptor which was connected to Mindray PM9000 monitor IBP channel and ureteric catheter positioned in renal pelvis during MPCNL, and a computer collected the renal pelvic pressure data each second. Results Renal pelvic pressure was measured in 112 cases during MPCNL, and the influence factors of renal pelvic pressure and its correlation with postoperative fever were analyzed. Conclusion Renal pelvic pressure generally remained lower than a level to back-flow [30 mm Hg(1 mm Hg=0.133 kPa)] during MPCNL. Any factors which brought about a bad drainage would result in a temporal elevated intrapelvic pressure greater than 30 mm Hg. It's necessary for the surgeons to adjust their manipulation to keep a low renal peivic pressure. A spurt high renal pelvic pressure greater than 30 mmHg wouldn't cause a postoperative fever, while a status of renal pelvic pressure greater than 30 mmHg(longer than 50 s) or a mean renal pelvic pressure greater than 20 mmHg all through the procedure may lead to an enough back-flow, resulting in a postoperative fever.

Measurement of renal pelvic pressure during minimally invasive percutaneous nephrolithotomy

Objective To introduce a new method to measure renal pelvic pressure in vivo during minimally invasive percutaneous nephrolithotomy (MPCNL), and investigate its clinical significance.Methods Renal pelvic pressure was measured by baroceptor which was connected to Mindray PM9000 monitor IBP channel and ureteric catheter positioned in renal pelvis during MPCNL, and a computer collected the renal pelvic pressure data each second. Results Renal pelvic pressure was measured in 112 cases during MPCNL, and the influence factors of renal pelvic pressure and its correlation with postoperative fever were analyzed. Conclusion Renal pelvic pressure generally remained lower than a level to back-flow [30 mm Hg(1 mm Hg=0.133 kPa)] during MPCNL. Any factors which brought about a bad drainage would result in a temporal elevated intrapelvic pressure greater than 30 mm Hg. It's necessary for the surgeons to adjust their manipulation to keep a low renal peivic pressure. A spurt high renal pelvic pressure greater than 30 mmHg wouldn't cause a postoperative fever, while a status of renal pelvic pressure greater than 30 mmHg(longer than 50 s) or a mean renal pelvic pressure greater than 20 mmHg all through the procedure may lead to an enough back-flow, resulting in a postoperative fever.