Abstract
To compare the effectiveness of two single-use vacuum devices, the Kiwi Omnicup and the Mitysoft Bell. This retrospective study was conducted during two different periods: from January 15th to March 14th to assess the Kiwi Omnicup and from March 15th to June 15th for the Mitysoft Bell. The primary outcome was the successful completion of delivery with the allocated instrument. Secondary outcomes were fetal scalp trauma and maternal perineal lesions. All deliveries were performed by similar teams. Thirty-nine patients were included in the Kiwi Omnicup group and 48 in the Mitysoft Bell group. Compared to the Kiwi Omnicup, the Mitysoft Bell was associated with a greater number of cup detachments (41.7% vs. 10.3%; p<0.01) and a significantly higher rate of failure (31.3% vs. 12.8%). Rates of substantial scalp trauma and maternal trauma were similar in both groups. The Mitysoft Bell is not as successful at achieving a vaginal delivery as the Kiwi Omnicup. This could be explained by the shape of the cup.
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