Objective: To investigate the trend of infant mortality from preventable causes in children under one year of age in Rondônia from 2008 to 2018.
Method: Epidemiological study of time series with data from the Mortality and Live Birth Information Systems, driven by STATA® version 11.0, trend measured by Prais-Winsten linear regression and autocorrelation with Durbin and Watson test.
Results: The infant mortality rate was 14.57 deaths / 1,000 live births, 9.14 / 1,000 due to preventable causes. Deaths decreased by 2.88% annually (95% CI: - 4.67; -1.06). However, causes that can be reduced by running immunization actions, to women during pregnancy and fetal and non-childbirth growth, have stable rates. Deaths from preventable causes in the late neonatal period were declining (-11.69%; 95% CI -19.56; -3.05).
Conclusion: Managers need to qualify maternal and child care, considering the performance of the team of professionals in assisting the pregnant-puerperal cycle as well as improving the quality of infant mortality records in the region.