Twice-Weekly Versus Once-Weekly Membrane Sweeping in the Prevention of Post-Term Pregnancy: a Systematic Review and Meta-Analysis of Randomized Controlled Trials.

Membrane sweeping is considered a simple and effective method for initiating spontaneous onset of labor. Despite the widely accepted membrane sweeping use to prevent post-term birth, the optimal frequency has not been estimated. We aimed to assess the effectiveness and safety of twice-weekly versus once-weekly membrane sweeping in post-term pregnancy prevention.