Demographic, hemodynamic characteristics, and therapeutic trends of pulmonary hypertension patients: The Pulmonary Hypertension Mexican registry (REMEHIP).

Data on demographic characteristics and therapeutic approaches in Latin American pulmonary arterial hypertension (PAH) patients are scarce. Pulmonary Hypertension Mexican registry (REMEHIP) is a multicenter Mexican registry of adult and pediatric patients, including prevalent and incident cases. Objective: assess clinical characteristics, treatment trends, and in-hospital outcomes. Inclusion: age >2 years, diagnosis of pulmonary hypertension (PH) (groups 1 and 4), right heart catheterization with mPAP ≥25 mmHg, PWP ≤ 15 mmHg, and PVR > 3 Wood unit (WU). We included 875 PH patients, 619 adults, 133 pediatric idiopathic PAH (IPAH), and 123 chronic thromboembolic pulmonary hypertension (CTEPH) patients. We enrolled 48.4% of the incident and 51.6% of the prevalent adult and pediatric patients. PAH adults: age 43 ± 15, females 81.9%, functional class (FC) (I/II) 66.5%, 6-min walk distance (6MWD) 378 ± 112 m, mPAP 57.3 ± 19.0 mmHg, confidence interval (CI) 3.3 ± 1.5 L/min/m2, PVR 12.0 ± 8.1 WU. PAH pediatrics: age 9 ± 5, females 51.1%, FC (I/II) 85.5%, 6MWD 376 ± 103 m, mPAP 49.7 ± 13.4 mmHg, CI 2.6 ± 0.9 L/min/m2, PVR 16.4 ± 13.5 WU. CTEPH: age 44 ± 17, females 56.1%, FC (I/II) 65.5%, 6MWD 369 ± 126 m, mPAP 49.7 ± 13.4 mmHg, CI 2.6 ± 0.9 L/min/m2, PVR 10.5 + 6.5 WU. When we analyzed the IPAH group separately, it sustained a high functional class I/II incidence. REMEHIP shows better functional class in young females with severe PAH than in American and European patients. Also, PAH pediatric patients had a better functional class than other registries. However, our registry also shows that our population's access to specific pharmacologic treatments is still far from optimal.

Mexican registry of pulmonary hypertension REMEHIP / Registro Mexicano de Hipertensión Pulmonar REMEHIP

Abstract: Objective: REMEHIP is a prospective, multicentre registry on pulmonary hypertension. The main objective will be to identify the clinical profile, medical care, therapeutic trends and outcomes in adult and pediatric Mexican patients with well-characterized pulmonary hypertension. Methods: REMEHIP a multicenter registry began in 2015 with a planned recruitment time of 12 months and a 4-year follow-up. The study population will comprise a longitudinal cohort study, collecting data on patients with prevalent and incident pulmonary hypertension. Will be included patients of age >2 years and diagnosis of pulmonary hypertension by right heart catheterization within Group 1 and Group 4 of the World Health Organization classification. The structure, data collection and data analysis will be based on quality current recommendations for registries. The protocol has been approved by institutional ethics committees in all participant centers. All patients will sign an informed consent form. Currently in Mexico, there is a need of observational registries that include patients with treatment in the everyday clinical practice so the data could be validated and additional information could be obtained versus the one from the clinical trials. In this way, REMEHIP emerges as a link among randomized clinical trials developed by experts and previous Mexican experience.

Resumen: Objetivo: REMEHIP es un registro prospectivo, multicéntrico en hipertensión pulmonar. El objetivo principal será identificar el perfil clínico, atención médica, tendencias terapéuticas y evolución en pacientes mexicanos adultos y pediátricos con hipertensión pulmonar bien caracterizada. Métodos: El REMEHIP comenzó en el año de 2015 y se planea un reclutamiento de 12 meses con un seguimiento de 4 años. La población en estudio será una cohorte longitudinal y se obtendrán datos de pacientes prevalentes e incidentes con hipertensión pulmonar. Se incluirán pacientes con edad > 2 años con diagnóstico de hipertensión pulmonar demostrado por cateterismo cardiaco derecho del Grupo 1 y Grupo 4 de la clasificación de la Organización Mundial de la Salud. La estructura, colección de datos y el análisis se establecerá a través de las recomendaciones actuales de calidad para los registros. El protocolo ha sido aprobado por los comités de ética de todos los centros participantes. Todos los pacientes firmarán un consentimiento informado. Actualmente en México existe una necesidad de registros observacionales que incluyan a pacientes con tratamiento en la práctica clínica cotidiana, de tal forma que los datos obtenidos podrían validarse y el resto de la información podría compararse con la derivada de los estudios clínicos. De esta forma REMEHIP surge como un vínculo entre los estudios clínicos aleatorizados conducidos por expertos y la experiencia mexicana previa.