Resumen AbstractObjetivo principal: Valorar la rotación fetal de posición occipitoposterior (OP) a occipitoanterior (OA) durante el parto con la postura "manos-rodillas" (MR) frente a la postura "decúbito lateral (DL) hacia la espalda fetal". Metodología: Ensayo clínico multicéntrico. Mediante asignación aleatoria, 65 gestantes con posición fetal OP adoptaron la postura MR (grupo MR) y 70 gestantes la postura DL hacia la espalda fetal (grupo DL) durante 30 minutos. Resultados principales: Similar rotación fetal a OA durante la intervención del grupo MR frente al grupo DL (55,4% vs. 54,3%; Odds Ratio de 1,04 para un intervalo de confianza al 95%:0,53-2,06). Tampoco hubo diferencias estadísti-camente significativas para los resultados de duración y tipo de terminación del parto entre los grupos. Conclusión principal: Para mejorar los resultados de los partos con posición fetal occipitoposterior recomendamos la adopción de las posturas MR y DL hacia la espalda fetal durante el parto, pues ambas tienen similar eficacia de rotación fetal a occipitoanterior. Palabras clave: Parto. Rotación fetal. Postura lateral. Postura manos-rodillas. Posición occipitoposterior. EFFICACY OF HANDS AND KNEES MATERNAL POSTURE TO CORRECT THE OCCIPITOPOSTERIOR FETAL POSITION DURING LABORObjective: To evaluate the efficacy of hands and knees (HK) maternal posture during labor thus promoting fetal rotation from occipitoposterior to occipitoanterior and to compare the results with the lateral toward the fetal back posture. Methods: Multicenter clinical trial. By simple randomization and for at least 30 minutes, 65 women with a single fetus in occipitoposterior position took the HK posture (HK group) and 70 women took the "lateral toward the fetal back" posture (lateral group). Results: HK group and lateral group have similar fetal rotation to occipitoanterior during the intervention (55.4% vs. 54.3%, odds ratio of 1.04 for a confidence level of 95%: 0.53-2.06). There were no statistically significant differences for the results of duration and type of birth between groups. Conclusions: To improve birth outcomes, We recommend that pregnant women with occipitoposterior fetal position adopt HK posture and lateral toward the fetal back posture during labor, because both postures have similar efficacy of fetal rotation to occipitoanterior.
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