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Archivos de cardiología de México
versão On-line ISSN 1665-1731versão impressa ISSN 1405-9940
Resumo
VALENZUELA-MUHECH, Yamile L. et al. Definition of normal blood pressure at 11 to 14 weeks’ gestation according to risk. Arch. Cardiol. Méx. [online]. 2023, vol.93, n.1, pp.62-68. Epub 24-Fev-2023. ISSN 1665-1731. https://doi.org/10.24875/acm.21000247.
Objective:
To define normal blood pressure at first trimester of pregnancy by performance for pre-eclampsia prediction.
Method:
A cohort study in singleton pregnancies, according to the competing risks model for pre-eclampsia. Blood pressure was measured according to a standardized method at 11 to 14 weeks’ gestation.
Results:
Among 797 pregnancies included, there were 40 (5.0%, IC95 3.6; 6.4) deliveries with pre-eclampsia. The systolic, diastolic, and mean arterial blood pressures were respectively of 101(9), 68(8) and 79(8) mmHg in pregnant women who did not develop pre-eclampsia, against 109(10), 75(8) and 86(8) in those who did (p < 0.001, t-test). The areas under the curves were 0.707 (0.637; 0.777), 0.728 (0.661; 0.795), and 0.738 (0.673; 0.803). At a 3% of false positive rate, the cut-off points were 119, 83 and 94 mmHg with predictive values of negative of 95.6%.
Conclusions:
It is feasible to define the normal values for blood pressure in pregnancy on biostatistic and clinical basis.
Palavras-chave : Blood pressure; Pregnancy; Reference values; Pre-eclampsia; Mexico.