孕晚期肚子痛就要生了?假性宫缩“假”在哪?
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假宫缩和真宫缩有什么区别?假性宫缩是不规则的、低强度的,不会导致宫颈管缩短和子宫口增大。通常给予镇静药物后宫缩会消失。
很多孕妈妈都肚子疼。赶到医院后被医生告知是假性宫缩,还没到真正临产的时候。那么,这种伪收缩和真收缩有什么区别呢?
首先,假性宫缩不是很规律。
真正引起分娩的宫缩一般是2~3分钟一次,来得有规律,强度也比较大;但是,假性宫缩往往是不规则的。可能是两次宫缩间隔时间比较近,但是间隔时间长了就没再宫缩了,强度远不如真宫缩。
其次,假性宫缩通常不会导致胎儿早产,也不会使宫颈管缩短。所以假性宫缩不会导致早产。
正是因为假性宫缩,这种宫缩通常是不规则的,也不是很强烈,所以一般来说,假性宫缩不会造成胎儿宫内缺氧。在临床上,我们在鉴别假性宫缩时,除了规律性和强度,以及是否引起胎儿先露部下降和宫颈管缩短外,有时还会用一些药物来判断。给孕妇服用一些镇静药物后,如果宫缩消失,我们通常认为是假性宫缩;如果使用药物后,宫缩变得更加强烈而不是消失,那么我们应该考虑到真正的宫缩会引起分娩。
总结
要区分假宫缩和真宫缩,可以从以下几点入手:
(1)假性宫缩是不规则的,而真性宫缩是规则的;
(2)假性宫缩强度低,疼痛程度与真性宫缩有很大差别;
(3)假性宫缩不会导致胎儿早产和宫颈管缩短,所以不会引起分娩;
(4)给予镇静药物后,假性宫缩会消失,但真性宫缩会更加剧烈。
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