观察低强度超声辐照治疗对产后子宫复旧的影响。

选择2012年6月至12月在重庆医科大学附属第一医院产科住院分娩的141例产妇为研究对象。采用单盲法（产妇对是否治疗不知情），按照分娩方式及是否接受低强度超声治疗将其分为剖宫产治疗组（n＝46），剖宫产对照组（n＝34），顺产治疗组（n＝30）及顺产对照组（n＝31）。顺产产妇于产后6 h开始第1次治疗，剖宫产产妇于产后24 h开始第1次治疗。治疗组采用超声波治疗仪进行超声治疗，2次／d, 30 min／次，连续治疗5次；对照组操作方法与治疗组一致，但不输出超声能量。临床观察各组患者治疗后宫底下降程度，恶露情况及疼痛（Vas）评分。各组产妇年龄等一般临床资料比较，差异无统计学意义（P>0.05）（本研究遵循的程序符合重庆医科大学附属第一医院人体试验委员会制定的伦理学标准，得到该委员会批准，分组征得受试对象知情同意，并与之签署临床研究知情同意书）。

治疗后，治疗组宫底下降指数明显优于对照组，差异有统计学意义（H＝31.710 0, 34.390 0，P<0.05）；恶露结束时间明显短于对照组，差异有统计学意义（H＝5.927 0，6.343 5，P<0.05）。治疗结束后，剖宫产治疗组Vas评分差值与剖宫产对照组比较，差异有统计学意义（P<0.05），但顺产治疗组Vas评分差值与顺产对照组比较，差异无统计学意义（P>0.05）。

低强度超声治疗可促进产后子宫复旧，并可缩短产后恶露结束时间，但治疗对顺产妇产后Vas评分无影响，而不能改善其产后疼痛；仅能缓解剖宫产产妇子宫疼痛。

To investigate the effects of low-intensity ultrasound irradiation on involution of uterus after delivery.

From June 2012 to December 2012, a total of 141 cases delivered in the First Affiliated Hospital of Chongqing Medical University were studied. Using the single blind method (The patient didn't know whether be treated or not) , and they were divided into 4 groups: caesarean section treatment group (n=46) ,caesarean section control group (n=34) ,natural childbirth treatment group (n=30) and natural childbirth control group (n=31) ,according to the different childbirth way and whether by low-intensity ultrasound irradiation. The first treatment began in the first 6 hours after natural childbirth, compared with 24 hours who has the cesarean section. The treatment group received the ultrasound therapy 2 times a day, for 30 minutes every time, a overall treatment of 5 times; Operation method of control group was consistent with treatment group, but no ultrasound energy output. Observe the decline of fundus uteri, lochia clear time after delivery and visual analog scale score before and after the treatment. The maternal ages and other clinical characteristics of each group had no significant difference (P>0.05) . The study protocol was approved by the Ethical Review Board of Investigation in Human Beings of the First Affiliated Hospital of Chongqing Medical University. Informed consent was obtained from each participating patient.

The fundus decline index of treatment group was obviously better than the control group (H =31.710 0, 34.390 0, P<0.05) ,and the lochia clear time was significantly shorter than the control group (H=5.927 0, 6.343 5, P<0.05) ．The visual analog scale (Vas) score of caesarean section treatment group had significant difference compared with the control group before and after treatment (P<0.05) , but there has no signifficant difference between two groups of natural childbirth of Vas score (P >0.05) .

The low-intensity ultrasound and shorten lochia clear time. It can alleviated the cesarean section uterine pain but not work for eutocia puerpera. irradiation can promote the involution of uterus and shorten lochia clear time. It can alleviate the cesarean section uterine pain but not work for eutocia puerpera.