Successful technique of manual vacuum aspiration for treatment of type 2 cesarean scar pregnancies: evaluation of 40 cases.

Objective: To demonstrate the effectiveness and safety of the defined manual vacuum aspiration (MVA) technique for treatment of type 2 cesarean scar pregnancies (CSPs).

Methods: We treated 40 patients with CSP by MVA at the Early Pregnancy Clinic of our hospital between 1 January 2012 and 31 December 2014. The files of patients were reviewed and evaluated retrospectively. Eligibility criteria were hemodynamic stability and at least 2 mm myometrial thickness at the anterior part of the CSP. The key-point of successful MVA procedure is to keep away from entering the cesarean scar cavity directly; instead, CSP is displaced from the implantation site by applying vacuum, only while the cannula is passing near.

Results: During the study period, the ratio of CSP to total pregnancies was 1/1000. The ratio of CSP to cesarean delivery (CD) was 1/372. In that time period, CSPs were constituted 4.41% of all ectopic pregnancies. Total of 40 patients were treated with dilatation and MVA. Complications such as excessive hemorrhage, persistence of CSP, and any need of extra intervention were not observed. The beta-hCG values of 21 patients (52.5%) decreased below 10 mIU/mL after the first 15 days, and the rest decreased below 10 mIU/mL after 3 weeks following MVA.

Conclusions: This MVA technique for treatment of CSP is easily applicable and effective method with high success and low complication rates. For appropriately selected patients, we think that this method can be considered as the first- line treatment.