Resumen de Péptido natriurético cerebral sérico en preeclámpticas y embarazadas normotensas

Eduardo Reyna Villasmil, Jorly Mejia Montilla, Nadia Reyna Villasmil, Joel Santos Bolívar, Andreina Fernández Ramírez, Marta Rondón Tapia

• español

  Objetivo: Comparar las concentraciones séricas de péptido natriurético cerebral en pacientes con preeclampsia y embarazadas normotensas sanas. Diseño: Estudio de casos y controles. Institución: Hospital Central “Dr. Urquinaona”, Maracaibo, Venezuela. Participantes: Se seleccionó un total de 180 embarazadas. Se incluyeron 90 preeclámpticas como grupo de estudio (grupo A) y un grupo de control seleccionado por tener edad e índice de masa corporal similares al grupo de estudio, que consistió en 90 embarazadas normotensas sanas (grupo B). Métodos: Las muestras de sangre se recolectaron en todas las pacientes antes del parto e inmediatamente después del diagnóstico en el grupo A, para determinar las concentraciones de péptido natriurético cerebral. Principales medidas de resultados: Características generales, concentraciones de péptido natriurético cerebral y eficacia diagnóstica. Resultados: Se encontraron diferencias estadísticamente significativas en las concentraciones séricas de péptido natriurético cerebral entre las pacientes del grupo A (65,1 +/- 14,1 pg/mL) y las pacientes del grupo B (43,2 +/- 9,8 pg/mL; p < 0,001). No se observaron correlaciones significativas con los valores de presión arterial sistólica y diastólica en las preeclámpticas (p = ns). Un valor de corte de 55 pg/mL presentó un valor por debajo de la curva de 0,88, sensibilidad 71,1%, especificidad 83,3%, valor predictivo positivo 81,0% y valor predictivo negativo 74,2%, con una exactitud diagnóstica del 77,2%. Conclusión: Las preeclámpticas presentaron concentraciones séricas significativamente más altas de péptido natriurético cerebral al compararlo con embarazadas normotensas sanas.

• English

  Objective: To compare serum brain natriuretic peptide concentrations in preeclamptic patients and healthy normotensive pregnant women. Design: Case-control study. Setting: Hospital Central “Dr. Urquinaona”, Maracaibo, Venezuela. Participants: A total of 180 patients were selected. Ninety preeclamptic patients were selected as the study group (group A) and 90 healthy normotensive pregnant women with the same age and body mass index as the study group were selected as controls (group B). Methods: Blood samples were extracted from all patients before labor and immediately after diagnosis in group A to determine serum cerebral natriuretic peptide concentrations. Main outcome results: General characteristics, serum brain natriuretic peptide concentrations and diagnostic efficacy. Results: There was a statistically significant difference in serum brain natriuretic peptide concentrations between group A (65.1 +/- 14.1 pg/mL) and group B (43.2 +/- 9.8 pg/mL; p < 0.001). There was no significant correlation with systolic and diastolic blood pressure values (p = ns). A cutoff value of 55 pg/mL had an area under the curve of 0.88, sensitivity 71.1%, specificity 83.3%, positive predictive value 81.0% and negative predictive value 74.2%, with diagnostic accuracy of 77.2%. Conclusion: Preeclamptic patients have s ignificantly h igher concentrations of serum brain natriuretic peptide compared to healthy normotensive pregnant women. Objective: To compare serum brain natriuretic peptide concentrations in preeclamptic patients and healthy normotensive pregnant women. Design: Case-control study. Setting: Hospital Central “Dr. Urquinaona”, Maracaibo, Venezuela. Participants: A total of 180 patients were selected. Ninety preeclamptic patients were selected as the study group (group A) and 90 healthy normotensive pregnant women with the same age and body mass index as the study group were selected as controls (group B). Methods: Blood samples were extracted from all patients before labor and immediately after diagnosis in group A to determine serum cerebral natriuretic peptide concentrations. Main outcome results: General characteristics, serum brain natriuretic peptide concentrations and diagnostic efficacy. Results: There was a statistically significant difference in serum brain natriuretic peptide concentrations between group A (65.1 +/- 14.1 pg/mL) and group B (43.2 +/- 9.8 pg/mL; p < 0.001). There was no significant correlation with systolic and diastolic blood pressure values (p = ns). A cutoff value of 55 pg/mL had an area under the curve of 0.88, sensitivity 71.1%, specificity 83.3%, positive predictive value 81.0% and negative predictive value 74.2%, with diagnostic accuracy of 77.2%. Conclusion: Preeclamptic patients have significantly higher concentrations of serum brain natriuretic peptide compared to healthy normotensive pregnant women.