Objective: To evaluate the effectiveness of the implementation of intervention packages for postpartum hemorrhage (PPH) management in pregnant women hospitalized in a High Obstetric Complexity Unit in a Latin American country. Methods: Retrospective cohort study including pregnant women with PPH attended between January 2011 to December 2019. Three periods of time were defined according to management strategies We performed univariate and multivariate robust Poisson regression logistic models for each of the outcomes derived from each period. Results: We included 602 patients. There was a reduction in period 3 of the incidence of massive PPH (16% versus 12% P < 0.001, relative risk [RR] 0.61, 95% confidence interval [CI] 0.44–0.85; P = 0.003), major surgery (24%, 13%, 11%, P = 0.002, RR 0.54, 95% CI 0.33–0.883; P = 0.014), and admission to the intensive care unit (ICU) (14%, 7%, 6.1%, P = 0.0, RR 0.40, 95% CI 0.17–0.96 P = 0.00). Conclusion: The implementation of PPH intervention packages in a hospital in a middle‐income country from Latin America, led to a significant decrease in the incidence of massive bleeding, the rate of major surgery, and the ICU stay of pregnant women affected by this condition. Synopsis: Intervention packages for PPH in LMICs enable integrated care for early detection of PPH risk, early recognition, and interventions to reduce its progression. [ABSTRACT FROM AUTHOR]