OBJECTIVES:  Establish the impact of the introduction of new technologies for maternal-fetal monitoring in the epidemiological indicators at the Clinica Maternidad Rafael Calvo C -CMRC-. METHODS:  Cross-sectional and descriptive study. The target population was formed by patients who attended CMRC from January 1, 2013 to April 30, 2016.The information on this population was extracted from the databases and clinical records of the Department of Statistics and Epidemiological Surveillance of the CMRC. Statistics tests such as Wilcoxon rank-sum and Pearson correlation test were applied. The discontinuity regression model and Chow test were used to evaluate possible structural changes in the series. RESULTS:  Perinatal Mortality and Late Neonatal, stillbirths and vaginal deliveries had changes in their trend with the introduction of new technologies. The regression showed that before the new technologies, detected cases of congenital defects increased at a rate of 5.2% [CI95%= -14.8-25.3] and those of extreme maternal morbidity at 6.5% [CI95%= 5.7-18.7]. In the new technologies exposure period, the average rate of congenital defects decreased at a rate of 8.4% [CI95%= -17.6-0.7] and extreme maternal morbidity at 1% [CI95%=-6.6-4.5), implying a real growth rate of 3% and 5% respectively. Regarding the number of procedures performed with the new medical equipment, a 1% increase before the technologies implied a decrease of 0.44% [CI95%= -3.2-2.3] in diagnoses of congenital defects and one of 0.3% [CI95%= -1.9-1.3] in the diagnoses of extreme maternal morbidity. After one year, 1% increase effect on procedures turned into an average increase of 1.3% [CI95%= 0.1-2.5] in diagnoses of congenital defects and 0.6% in extreme maternal morbidity [CI95%= -0.1-1.3]. CONCLUSIONS:  The new medical equipment allows us to make more complex diagnoses, providing the opportunity to intervene and impact in a timely manner and thus avoid and mitigate problems in the fetus and the mother.