Second-trimester dilatation and evacuation: Comparison of routine intraoperative ultrasonography versus problem-based intraoperative ultrasonography in reducing procedure-related complications: A pre-post study.

OBJECTIVE

To investigate whether routine intraoperative ultrasonographic guidance during second-trimester dilatation and evacuation (D&E) reduces procedure-related complications in an Ethiopian setting.

METHODS

We conducted a pre-post study on routine ultrasonography during second-trimester D&E at St. Paul's Hospital Millennium Medical College (Ethiopia). Second-trimester D&E cases that were managed at the hospital between 2017 and 2022 were retrospectively analyzed by grouping them into an intervention group (using routine ultrasound intraoperatively for all cases) and a non-intervention group (problem-based intraoperative use of ultrasound, where ultrasound was used in problem cases only). SPSS version 23 was used for analysis and simple descriptive statistics, χ test, multivariate regression analysis, and Fisher exact test were performed as appropriate. P values less than 0.05 and odds ratio with 95% CI were used to present the results' significance.

RESULTS

A total of 242 second-trimester D&E cases were analyzed (84 cases managed under routine intraoperative ultrasound guidance and 158 cases managed with a problem-based intraoperative use of ultrasound). Compared with problem-based intraoperative use of ultrasound (using it only in selected cases), routine intraoperative ultrasound use was not associated with a decrease in D&E complications (adjusted odds ratio [aOR] 0.22, 95% confidence interval [CI] 0.04-1.16). The two factors associated with increased D&E procedure complications were advanced gestational age (aOR 13.52, 95% CI 1.86-98.52), and need for additional mechanical cervical dilatation during the D&E procedure (aOR 9.53, 95% CI 1.32-69.07). Provider experience, cervical preparation methods (laminaria vs Foley), and maternal age were not associated with occurrence of D&E complications.

CONCLUSION

Our study does not support the preference of routine intraoperative ultrasound guidance over problem-based (in selected cases) intraoperative ultrasound use during the second-trimester D&E procedure. More research is needed to make a strong clinical recommendation on using routine intraoperative ultrasound guidance during all second-trimester D&E procedures.