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- W3100830997 abstract "Background: There is variation in the reported incidence of levator avulsion (LA). Objective: Explore incidence of LA by mode of birth, imaging modality, timing of diagnosis and laterality of avulsion. Search strategy: We searched MEDLINE, EMBASE, CINAHL, AMED and MIDIRS with no language restriction from inception to April 2019. Study eligibility criteria: A study was included if LA was assessed by an imaging modality after the first vaginal birth or if only delivered by caesarean section. Case series and reports were not included. Data collection and analysis: RevMan v5.3 was used for the meta-analyses and SW SAS and STATISTICA packages for type and timing of imaging analyses. . Results: We included 37 primary non-randomized studies from 17 countries and involving 5594 women. Incidence of LA was 1%, 15%, 21%, 38.5% and 52% following caesarean, spontaneous, vacuum, spatula and forceps births respectively, with no differences by imaging modality. OR of LA following spontaneous birth vs. caesarean was 10.69. While the OR for LA following vacuum and forceps compared to the spontaneous birth were 1.66 and 6.32 respectively. LA was more likely to occur on the right side following spontaneous birth (p = 0.02) and unilaterally vs. bilaterally following spontaneous (P < .0001) and vacuum-assisted births (P = 0.0103) only. Incidence was higher if assessment was performed in the first 4 weeks postpartum. Conclusions: Forceps significantly increases incidence and severity of LA. Ultrasound and MRI are comparable diagnostic tools but early postpartum imaging may lead to over diagnosis of LA." @default.
- W3100830997 created "2020-11-23" @default.
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- W3100830997 date "2020-11-12" @default.
- W3100830997 modified "2023-10-16" @default.
- W3100830997 title "Levator ani Avulsion Systematic Evidence Review (LASER)" @default.
- W3100830997 doi "https://doi.org/10.22541/au.160518071.15507481/v1" @default.
- W3100830997 hasPublicationYear "2020" @default.
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