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espanolLa perdida perinatal puede devenir en duelo complicado. Con el objetivo de desarrollar y probar un modelo explicativo del efecto de la resiliencia, el apoyo social y variables sociodeomograficas sobre la resolucion del duelo perinatal, asi como determinar los indices psicometricos de la Escala de Resiliencia Mexicana (RESIM) en mujeres con perdida perinatal, se realizo un estudio transversal con 295 mujeres en duelo, quienes contestaron la Escala de Duelo Perinatal, la de Calidad de Red y la RESI-M. Los indices de confiabilidad y validez de la RESI-M resultaron satisfactorios. El modelo explico 12% de la varianza del duelo, con indices de ajuste adecuados; dos factores resilientes fueron predictores significativos. El apoyo familiar y de amigos, la practica religiosa y el numero de hijos predijeron la resiliencia. Se discute el papel de estas variables en la prevision del duelo complicado y la utilidad de la RESI-M en la clinica e investigacion EnglishResilience and social support enable the possible solution of perinatal bereavement. With the objective to determine the psychometric indexes of the Mexican Scale of Resilience (RESI-M) in women with perinatal loss and to establish the relation between resilience and social support within bereavement in an explanatory model, a cross-sectional study with 295 Mexican women in mourning was performed; they answered the RESI-M, the Scale of Network Quality and the Scale of Perinatal Grief. The psychometric indexes of the RESI-M were satisfactory, and the AFC showed acceptable levels of adjustment. The model explained 12% of the variance of active grief, with adequate adjustment indices; two resilient factors were significant predictors; support from family and friends, religious practice, and number of children predicted resilience. The role of these variables in the anticipation of complicated grief and the usefulness of RESI-M in clinical and research are discussed.