RESUMEN
Resumen: OBJETIVO: determinar la incidencia, a largo plazo, de hipertensión arterial en mujeres con diagnóstico previo de estados hipertensivos del embarazo e identificar los factores clínicos y bioquímicos gestacionales que incrementan el riesgo posterior de padecer hipertensión. MATERIALES Y MÉTODOS: estudio de casos y controles anidados en una cohorte. Se estudiaron las pacientes en quienes se estableció el diagnóstico de estados hipertensivos del embarazo entre 2000 y 2010. Grupo 1: mujeres con diagnóstico de estados hipertensivos del embarazo y posterior inicio de hipertensión arterial. Grupo 2: control de mujeres con diagnóstico de estados hipertensivos del embarazo que durante el tiempo de seguimiento no padecieron hipertensión arterial. Para determinar la potencial asociación entre las variables de estudio con la hipertensión arterial posterior se realizaron pruebas paramétricas y no paramétricas, y para detectar la relación o interacción entre las diferentes variables se estudiaron sus correlaciones. RESULTADOS: se registraron 121 pacientes con estados hipertensivos del embarazo. La incidencia posterior de hipertensión arterial fue de 41.3%. El tiempo promedio transcurrido hasta el diagnóstico de hipertensión arterial fue de 11.7 años (IC 95%: 10.6-12.9). El único factor de riesgo de hipertensión arterial posterior a la gestación índice fue la multiparidad. Ninguno de los demás parámetros estudiados tuvo significación estadística. CONCLUSIONES: los estados hipertensivos del embarazo son un factor de riesgo para el posterior desarrollo de hipertensión arterial. No es posible determinar, con base en los parámetros clínicos o bioquímicos gestacionales, cuáles presentarán una mayor incidencia de hipertensión futura. Todas las gestantes con esta patología deben ser informadas del riesgo hipertensivo a largo plazo.
Abstract: OBJECTIVE: To determine the incidence of long-term hypertension in women who were previously diagnosed of hypertensive pregnancy states. Secondarily identify clinical and biochemical gestational factors that increase the subsequent risk of hypertension. MATERIAL AND METHODS: Study of nested cases and controls in a cohort. Patients were selected who were diagnosed of "hypertensive pregnancy disorders" between 2000 and 2010 and two subgroups were differentiated: Group cases: women diagnosed with "hypertensive pregnancy disorders" and subsequent development of hypertension. - Control group: women with the diagnosis of "hypertensive pregnancy disorders" and who at the time of follow-up did not develop hypertension. The mean time elapsed until the diagnosis of hypertension was 11.79 years (95% CI: 10.6-12.90). Parametric and non-parametric tests were performed to determine the Potential association between the study variables with the later hypertension. In addition, to detect the relationship or interaction between the different variables, their correlations were studied. The influence of the different gestational variables on the subsequent occurrence of arterial hypertension as a function of the time parameter was obtained through the Kaplan Meier survival study and the COX models were applied for the categorical variables. RESULTS: We studied 121 patients diagnosed with "hypertensive pregnancy disorders". The subsequent incidence of hypertension was 41.32%. As a risk factor for posterior hypertension in gestation index, only multiparity was identified. None of the other parameters studied presented statistical significance. CONCLUSIONS: The hypertensive pregnancy disorders are a risk factor for the subsequent development of hypertension. It is not possible to determine, based on clinical or biochemical gestational parameters, which will present a higher incidence of future hypertension. All pregnant women with this pathology should be informed of the long-term hypertensive risk.
RESUMEN
Up to 20% of women with hypertensive pregnancy disorders might persist with chronic hypertension. This study compared clinical and echocardiographic features between women whose hypertension began as hypertensive pregnancy disorders (PH group) and women whose diagnosis of hypertension did not occur during pregnancy (NPH group). Fifty PH and 100 NPH women were cross-sectionally evaluated by clinical, laboratory, and echocardiography analysis, and the groups were matched by duration of hypertension. PH exhibited lower age (46.6 ± 1.4 vs. 65.3 ± 1.1 years; P < .001), but higher systolic (159.8 ± 3.9 vs. 148.0 ± 2.5 mm Hg; P = .009) and diastolic (97.1 ± 2.4 vs. 80.9 ± 1.3 mm Hg; P < .001) blood pressure than NPH, although used more antihypertensive classes (3.4 ± 0.2 vs. 2.6 ± 0.1; P < .001). Furthermore, PH showed higher left ventricular wall thickness and increased prevalence of concentric hypertrophy than NPH after adjusting for age and blood pressure. In conclusion, this study showed that PH may exhibit worse blood pressure control and adverse left ventricular remodeling compared with NPH.