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| Value analysis of the morphological parameters of anal levator hiatus of primiparass quantitatively evaluated by transperineal three-dimensional ultrasound |
| Ultrasound Department Fushun County People's Hospital，Sichuan Province, 643200 |
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Abstract To analyze the value of the morphological parameters of anal levator hiatus of primiparass quantitatively evaluated by transperineal three-dimensional ultrasound. Methods: The clinical data of 86 primiparass who had delivery in the hospital from January 2019 to December 2021 were analyzed retrospectively. In these primiparass, there were 52 cases with vaginal delivery in group A and 34 cases with cesarean delivery in group B. The pelvic floor muscle tension grading and the parameters of anal levator hiatus evaluated by transperineal three-dimensional ultrasound of the primiparass in both groups in the 6th weeks after delivery were recorded. The correlation between the pelvic floor muscle tension grading of the primiparass in group A and their parameters of anal levator hiatus was evaluated. The parameters changes of anallevator hiatus evaluated by transperineal three-dimensional ultrasound of the primiparass in the 6th week and in the 12th week after delivery were compared between the two groups. Results: The pelvic floor muscle tension grading of the primiparass in group A in the 6th week after delivery was significantly lower than that of the primiparass in group B. The values of anteroposterior diameter, left-right diameter, and area of anal levator hiatus in the resting state and in the maximum Valsalva state of the primiparass in group A were significantly higher than those of the primiparass in group B, and which of the primiparass with pelvic floor muscle tension grade I-III in group A were signifiatly higher than those of the primiparass with pelvic floor muscle tension grade IV-V (all P＜0.05). Spearman rank correlation analysis showed that the pelvic floor muscle tension grading of the primiparass was significantly negatively correlated with their values of anteroposterior diameter, left-right diameter, and area of anal levator hiatus in the resting state and in the maximum Valsalva state (all P＜0.05). The values of anteroposterior diameter, left-right diameter, and area of anal levator hiatus in the resting state and in the maximum Valsalva state of the primiparass in both groups in the 12th week after delivery were significantly smaller than those of the primiparass in the 6th week after delivery (P＜0.05), and which of the primiparass in the 12th week after delivery had no statistical significant differences between the two groups (P＞0.05). Conclusion: Transperineal three-dimensional ultrasound can provide guidance for postpartum rehabilitation training of the primiparass by measuring the morphology of anal levator hiatus in real time and quantitatively and by observing the abnormality of pelvic floor function.
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