Chronic Thromboembolic Pulmonary Hypertension: Experience from a Single Center in Mexico.

INTRODUCTION: Chronic thromboembolic pulmonary hypertension (CTEPH) is characterized by precapillary pulmonary hypertension secondary to vaso-occlusive pulmonary vasculopathy and is classified as Pulmonary Hypertension Group 4. The aim of this study is to report the clinical experience of CTEPH in Mexico. METHODS: Consecutive patients diagnosed with CTEPH were identified from the Registro de Pacientes con Hipertension Pulmonar del Instituto de Seguridad y Servicio Social de los Trabajadores del Estado (REPHPISSSTE) registry between January 2009 and February 2014. Right heart catheterization was not routinely performed prior to August 2010 in the work-up of CTEPH. RESULTS: We identified 50 patients with CTEPH; their median age was 63 years and 58 % were female. Patients had multiple associated co-morbidities and moderate hemodynamic impairment. All patients were treated with anticoagulation. Despite surgical evaluation for pulmonary endarterectomy (PEA), only one patient underwent PEA given the lack of infrastructure for post-operative care and lack of insurance for this procedure. Most of the patients were treated with sildenafil, bosentan, or both, with increasing use of rivaroxaban and sildenafil in recent years. The overall survival of the cohort was similar to that reported in other international registries, despite the limitations of care imposed by drug availability and surgical feasibility. CONCLUSION: This is the first report on the CTEPH experience in Mexico. It highlights the similarity of patients in the REPHPISSSTE registry to those in international registries as well as the challenges that clinicians face in a resource-limited setting.

Aneurisma aórtico que simula la aurícula derecha / Aortic aneurysm simulating right atrium

Se presenta el caso clínico de un paciente de 41 años de edad con antecedente de cambio valvular aórtico con una prótesis mecánica. Acude por presencia de disnea y palpitaciones a un centro hospitalario, donde le diagnostican fibrilación auricular paroxística y aparente fuga paravalvular severa, es enviado asintomático a un hospital de referencia. Negó síntomas anteriores al evento, se realiza ecocardiograma y estudios complementarios, encontrando aneurisma de raíz de aorta que simula la aurícula derecha.

We present the case report of a male aged 41 with a history of aortic valve replacement with a mechanical prosthesis. He presents dyspnea and palpitations in his local hospital, where they are diagnosed paroxysmal atrial fibrillation and severe paravalvular leak, He comes asymptomatic to our service, and denies symptoms prior to the event. It is performed echocardiography and complementary studies finding an aneurysm of the aortic root, simulating the right atrium.