The use of the transabdominal ultrasound with different frequency scanning anterior lower segment uterine scar situation to guide motherhood

Objective To explore the use of the transabdominal ultrasound with different frequency scanning anterior lower segment uterine scar situation for maternal guidance .Methods Pregnant women had a history of cesarean section 323 cases, and were lower uterine segment transverse incision .Of which seven cases of cesarean section were 8 months to 12 months, 49 patients 13 months to 24 months, 89 patients 25 months to 36 months, and more than 169 cases of 37 months.High-frequency ultrasound was use for ab-dominal and dynamic monitoring of different-year anterior lower segment uterine scar thickness and healing .Pregnancy outcomes ob-served were compared with surgery .Results With the extension of cesarean time , grade I uterine scar was also increased to 25~36 months （2 years ） which was the most obvious , and grade II and III scars were reduced accordingly .When group 25~36 months was used as the control group , there was statistically significant difference relative to group 8 ~12 months and 13 ~24 months （ P 〈0.01）, but was no significant difference relative to group >37 months （ P 〉0.05）.Among 323 cases, seven cases had uterine rup-ture that was confirmed by surgery with a rupture rate of about 2.1%.The rupture rate was about 28.6%in group 8~12 months, a-bout 2%in group 13~24 months, about 1.0%in group 25~36 months, and about 1.2%in group >37 months.When group 25~36 months was used as the control group , there was statistically significant difference relative to groups 8~12 months and 13~24 months （ P 〈0.01 ） , and was no significant difference relative to group 〉37 months （ P〉0.05 ） .Conclusions Abdominal ultra-sound with different frequency scanning can monitor the thickness and continuity of anterior lower segment uterine scar to estimate the scar healing situation , and guide uterine scar grading .Therefore, it is great significance in guiding clinical decision of motherhood ap-proach. Key words: Uterus/ultrasonography; Cicatrix; Cesarean section; Natural childbirth; Uterine rupture