Hyperbaric Oxygen Therapy Following Percutaneous Coronary Intervention for ST-Segment Elevation Myocardial Infarction.

Introduction: Hyperbaric oxygen therapy (HBOT) is a promising treatment modality for ischemic heart disease including myocardial infarction where outcomes are frequently poor despite early revascularization.

Objective: To compare single-photon emission computed tomography (SPECT) findings in patients undergoing primary percutaneous coronary intervention (PPCI) for ST-elevation myocardial infarction (STEMI) treated with HBOT vs. control at 6 weeks.

Initial experience in Mexico with the Evolut™ R valve with direct aortic Access.

Background: Aortic stenosis (AS) is one of the most frequent valvulopathies in elderly patients. The treatment for AS is heart surgery; however, many patients do not benefit from this treatment because they are considered to be at high surgical or inoperable risk. Transcatheter aortic valve implantation (TAVI) was developed for these patients.

Experiencia inicial en México con la prótesis aórtica transcatéter Evolut™ R por abordaje aórtico directo.

Background: Aortic stenosis is one of the most frequent valvulopathies in the elderly patient. The treatment for aortic stenosis is heart surgery, however many patients do not benefit from this treatment because they are considered to be at high surgical or inoperable risk. Transcatheter aortic valve (TAVI) was developed for these patients.

[Association between IGF system and PAPP-A in coronary atherosclerosis].

Atherosclerosis is a condition that involves multiple pathophysiological mechanisms and whose knowledge has not been fully elucidated. Often, scientific advances on the atherogenic pathophysiology generate that molecules not previously considered in the scene of this disease, were attributed actions on the onset or progression of it. A representative example is the study of a new mechanism involved in the atherogenic process, consisting of the association between the insulin-like growth factor (IGF) system and pregnancy-associated plasma protein-A (PAPP-A).

[Experience of transcatheter aortic valve implantation in the Central Military Hospital].

Objective: Transcatheter aortic valve implantation (TAVI) is an alternative treatment for patients with severe symptomatic aortic stenosis, inoperable or at high surgical risk. The purpose of this communication is to report the results of the experience of this new technique and compare them with literature.

Methods: Review of 17 patients data with symptomatic severe aortic stenosis at high surgical risk or inoperable, treated with a transcatheter implantation aortic valve (TAVI) via femoral surgical access with Core Valve (Medtronic, EE.

[Myocardial perfusion with Tc-99M sestamibi and dipyridamole, and SPECT images during complete block of the left branch of the bundle of his].

Aim: To review the results of myocardial perfusion during rest and post-pharmacological stress induced by dipyridamole and analyze the SPECT images in patients with complete left bundle branch block LBBB, comparing the results in the presence of a normal coronary angiographic study and with critical coronary obstructions.

Methods: Results from 50 studies of myocardial perfusion of patients with complete block of the LBBB were reviewed and segmental perfusion was analyzed comparing these results with those obtained with those from the diagnostic coronariography.

Results: From the 15 studied patients, divided in two groups, 9 with angiographically normal coronaries and 6 with significant coronary lesions, it was not possible to establish a typical perfusion pattern due to the small size of the sample, revealing that the perfusion defects cannot be explained only by the electrocardiographic alterations since other factors participate, such as left ventricular telediastolic hypertension on the interventricular septum as a consequence of the loss of synchrony in ventricular contraction.

Transcatheter patch correction of secundum atrial septal defects.

The efficacy and safety of the transcatheter patch (TP) correction of a secundum atrial septal defect (ASD) was studied acutely and on short-term follow-up in 20 patients, successfully implanted with the device. TPs are made of polyurethane foam and require temporary balloon catheter immobilization on the atrial septum for 48 hours. Eighteen patients were not suitable for disk-device repair.