[Transcatheter aortic valve implantation for aortic stenosis. Initial experience].

Background: Aortic stenosis is a frequent disease in the elderly, and is associated with other systemic pathologies that may contraindicate the surgical procedure. Another option for these patients is percutaneous aortic valve implantation, which is less invasive. We present our initial experience with this procedure.

[Combined heart-kidney transplantation in Mexic].

Background: In our country, heart and kidney transplantation is a novel option for treatment of combined terminal heart and kidney failure. This program began in 2012 for selected patients with documented terminal heart failure and structural kidney damage with renal failure. Description of cases: Between January 1, 2012 and April 30, 2016, we made 92 orthotopic heart transplantations.

[Mucha-Habermann disease and orthotopic heart transplant. Case report].

Background: Mucha-Habermann disease is a cutaneous clinical manifestation of unknown etiology that frequently appears in young patients. The aim was to present Mucha-Habermann disease that occurred in an old man who had a heart transplant.

Clinical Case: a 62 year-old male, heart transplant recipient, who four years after that transplantation procedure presented with papular lesions in neck, thoracic members of which extended to all body surfaces and that evolved vesicles and pustular lesions.

Pleomorphic malignant histiocytoma of pulmonary arteries presenting as pulmonary aneurysms.

Pulmonary aneurysms and primary neoplasms of the great vessels are very rare entities; pulmonary aneurysms are commonly associated with congenital heart diseases, and less frequently in atherosclerosis, medial cystic necrosis, trauma, infection, and inflammatory processes. Many patients have pulmonary hypertension, most frequently resulting from pulmonary artery sarcomas mimicking pulmonary thromboembolism. Symptoms are vague.

[Heart transplant program at the UMAE, General Hospital Dr. Gaudencio González Garza, of the La Raza National Medical Center].

Background: The heart transplantation has modified the life expectancy of patients with terminal heart failure.

Objective: To present our experience in heart transplantation.

Material And Methods: A retrospective cohort study was realized for heart transplant recipients between July 21, 1988 and May 30, 2011.

[Gated single photon emission computed tomography (SPECT) and radionuclide ventriculography for evaluate the left ventricle ejection fraction in heart transplant recipients. Comparative study].

Objective: To evaluate which is the best method to determine the left ventricular ejection fraction in heart transplant recipients: radionuclide ventriculography or gated SPECT, compared with echocardiography as the gold standard method.

Material And Methods: A prospective, transversal, observational, and open study including all orthotopic heart transplant recipients between January 1, 1993 and December 31, 2010 was realized after signed Informed Consent, and we performed echocardiography, radionuclide ventriculography and gated SPECT in 14 patients. Normal value for left ventricle ejection fraction was considered 50% in all the methods.

Coronary artery bypass grafting surgery with minimal extracorporeal circulation system.

Background: For coronary artery bypass graft (CABG) surgery, cardiopulmonary bypass (CPB) is required for many patients. However, this procedure has several risks. Our objective was to test the hypothesis that the minimal extracorporeal circulation circuit (MECC) is more advantageous than CPB for CABG surgery.