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ESTUDIOS


01 noviembre 2015

JACC. Temporal Trends and Sex Differences in Revascularization and Outcomes of ST-Segment Elevation Myocardial Infarction in Younger Adults in the United States

Sahil Khera, Dhaval Kolte, Tanush Gupta, Kathir Selvan Subramanian, Neel Khanna, Wilbert S. Aronow, Chul Ahn, Robert J. Timmermans, Howard A. Cooper, Gregg C. Fonarow, William H. Frishman, Julio A. Panza, Deepak L. Bhatt

Background: Older women presenting with ST-segment elevation myocardial infarction (STEMI) are less likely to receive revascularization and have worse outcomes relative to their male counterparts.

01 noviembre 2015

JACC. Transcatheter Valve-in-Valve and Valve-in-Ring for Treating Aortic and Mitral Surgical Prosthetic Dysfunction

Jean-Michel Paradis, Maria Del Trigo, Rishi Puri, Josep Rodés-Cabau

Abstract: Bioprosthetic valve use has increased significantly. Considering their limited durability, there will remain an ongoing clinical need for repairing or replacing these prostheses in the future. The current standard of care for treating bioprosthetic valve degeneration involves redo open-heart surgery. However, repeat cardiac surgery may be associated with significant morbidity and mortality. With the rapid evolution of transcatheter heart valve therapies, the feasibility and safety of implanting a transcatheter heart valve within a failed tissue valve has been established. We review the historical perspective of transcatheter valve-in-valve therapy, as well as the main procedural challenges and clinical outcomes associated with this new less invasive treatment option.

01 noviembre 2015

JACC. Predictors and Impact of Myocardial Injury After Transcatheter Aortic Valve Replacement. A Multicenter Registry

Henrique B. Ribeiro, Luis Nombela-Franco, Antonio J. Muñoz-García, Pedro Alves Lemos, Ignacio Amat-Santos, Vicenç Serra, Fabio S. de Brito, Alexandre Abizaid, Rogério Sarmento-Leite, Rishi Puri, Asim N. Cheema, Marc Ruel, Fabian Nietlispach, Francesco Maisano, Cesar Moris, Raquel del Valle, Marina Urena, Omar Abdul Jawad Altisent, Maria del Trigo, Francisco Campelo-Parada, Pilar Jimenez Quevedo, Juan H. Alonso-Briales, Hipólito Gutiérrez, Bruno García del Blanco, Marco Antonio Perin, Dimytri Siqueira, Guilherme Bernardi, Éric Dumont, Melanie Côté, Philippe Pibarot, Josep Rodés-Cabau

Background: Cardiac biomarker release signifying myocardial injury post-transcatheter aortic valve replacement (TAVR) is common, yet its clinical impact within a large TAVR cohort receiving differing types of valve and procedural approaches is unknown.

01 noviembre 2015

JACC. Impact of Multivessel Revascularization on Health Status Outcomes in Patients With ST-Segment Elevation Myocardial Infarction and Multivessel Coronary Artery Disease

Jae-Sik Jang, John A. Spertus, Suzanne V. Arnold, Ali Shafiq, Anna Grodzinsky, Timothy J. Fendler, Adam C. Salisbury, Fengming Tang, Edward J. McNulty, J. Aaron Grantham, David J. Cohen, Amit P. Amin

Background: Up to 65% of patients with ST-segment elevation myocardial infarction (STEMI) have multivessel coronary artery disease (MVCAD). Long-term health status of STEMI patients after multivessel revascularization is unknown.

01 noviembre 2015

JACC. Percutaneous Pulmonary Valve Implantation. Present Status and Evolving Future

Mohammad M. Ansari, Rhanderson Cardoso, Daniel Garcia, Satinder Sandhu, Eric Horlick, Derek Brinster, Giuseppe Martucci, Nicolo Piazza

Abstract: Due to recurrent right ventricular outflow tract (RVOT) dysfunction, patients with complex congenital heart disease of the RVOT traditionally require multiple surgical interventions during their lifetimes. Percutaneous pulmonary valve implantation (PPVI) has been developed as a nonsurgical alternative for the treatment of right ventricular to pulmonary artery stenosis or pulmonary regurgitation. PPVI has been shown to be a safe and effective procedure in patients with dysfunctional surgical RVOT conduits. In this population, PPVI has the potential to improve symptoms, functional capacity, and biventricular hemodynamics. However, limitations to the anatomical substrate and size of the RVOT currently restrict PPVI eligibility to less than one-quarter of patients with RVOT dysfunction. The current review discusses contemporary practices in PPVI, evidence supporting the procedure, and future technologies and developments in the field.

01 septiembre 2015

JACC. Pulmonary Vein Isolation Using the Visually Guided Laser Balloon. A Prospective, Multicenter, and Randomized Comparison to Standard Radiofrequency Ablation

Srinivas R. Dukkipati, Frank Cuoco, Ilana Kutinsky, Arash Aryana, Tristram D. Bahnson, Dhanunjaya Lakkireddy, Ian Woollett, Ziad F. Issa, Andrea Natale, Vivek Y. Reddy, HeartLight Study Investigators

Background: Balloon catheters have been designed to facilitate pulmonary vein (PV) isolation in patients with paroxysmal atrial fibrillation (AF). The visually guided laser balloon (VGLB) employs laser energy to ablate tissue under direct visual guidance.

09 octubre 2015

CIRCULATION: CARDIOVASCULAR INTERVENTIONS. Predicting the Presence of an Acute Coronary Lesion Among Patients Resuscitated From Cardiac Arrest

Stephen W. Waldo, Lee Chang, Jordan B. Strom, Cashel O’Brien, Eugene Pomerantsev, Robert W. Yeh

Background: A mechanism to stratify patients resuscitated from a cardiac arrest according to the likelihood of an acute coronary lesion would have significant utility. We thus sought to develop and validate a risk prediction model for the presence of an acute coronary lesion among patients resuscitated from an arrest.

09 octubre 2015

CIRCULATION: CARDIOVASCULAR INTERVENTIONS. Immediate Percutaneous Coronary Intervention Is Associated With Improved Short- and Long-Term Survival After Out-of-Hospital Cardiac Arrest

Guillaume Geri, Florence Dumas, Wulfran Bougouin, Olivier Varenne, Fabrice Daviaud, Frédéric Pène, Lionel Lamhaut, Jean-Daniel Chiche, Christian Spaulding, Jean-Paul Mira, Jean-Philippe Empana, Alain Cariou,

Background: Whether to perform or not an immediate percutaneous coronary intervention (PCI) after out-of-hospital cardiac arrest is still debated. We aimed to evaluate the impact of PCI on short- and long-term survival in out-of-hospital cardiac arrest patients admitted after successful resuscitation.

09 octubre 2015

CIRCULATION: CARDIOVASCULAR INTERVENTIONS. Post-Resuscitation ECG for Selection of Patients for Immediate Coronary Angiography in Out-of-Hospital Cardiac Arrest

Henrik Stær-Jensen, Espen Rostrup Nakstad, Eigil Fossum, Arild Mangschau, Jan Eritsland, Tomas Drægni, Dag Jacobsen, Kjetil Sunde, Geir Øystein Andersen

Background: We aimed to investigate coronary angiographic findings in unselected out-of-hospital cardiac arrest patients referred to immediate coronary angiography (ICA) irrespective of their first postresuscitation ECG and to determine whether this ECG is useful to select patients with no need of ICA.

23 septiembre 2015

CIRCULATION: CARDIOVASCULAR INTERVENTIONS. Optical Coherence Tomography Findings in Bioresorbable Vascular Scaffolds Thrombosis

Florim Cuculi, Serban Puricel, Peiman Jamshidi, Jérémy Valentin, Zacharenia Kallinikou, Stefan Toggweiler, Melissa Weissner, Thomas Münzel, Stéphane Cook, Tommaso Gori

Background: Everolimus-eluting bioresorbable vascular scaffolds have been developed to improve late outcomes after coronary interventions. However, recent registries raised concerns regarding an increased incidence of scaffold thrombosis (ScT). The mechanism of ScT remains unknown.

24 septiembre 2015

CIRCULATION: CARDIOVASCULAR INTERVENTIONS. Hyperoxia Exacerbates Myocardial Ischemia in the Presence of Acute Coronary Artery Stenosis in Swine

Dominik P. Guensch, Kady Fischer, Nancy Shie, Julie Lebel, Matthias G. Friedrich

Background: Current guidelines limit the use of high oxygen tension after return of spontaneous circulation after cardiac arrest, focusing on neurological outcome and mortality. Little is known about the impact of hyperoxia on the ischemic heart. Oxygen is frequently administered and is generally expected to be beneficial. This study seeks to assess the effects of hyperoxia on myocardia oxygenation in the presence of severe coronary artery stenosis in swine.

08 octubre 2015

CIRCULATION: CARDIOVASCULAR INTERVENTIONS. Primary Percutaneous Coronary Intervention in Patients With ST-Segment–Elevation Myocardial Infarction and Concurrent Active Gastrointestinal Bleeding

Dilbahar S. Mohar, Arnold H. Seto, Morton J. Kern

Introduction: Reperfusion therapy via percutaneous coronary intervention (PCI) as the preferred method of treatment for an acute ST-segment–elevation myocardial infarction (STEMI) requires the use of potent antiplatelet agents (eg, aspirin, P2Y12 inhibitors, and GPIIb/IIIa antagonists) and anticoagulant therapies, including heparin or bivalirudin,1 both of which have potential risk of bleeding. An increased bleeding risk in some patients with STEMI makes the use of antiplatelet/anticoagulant agents a relative or absolute contraindication to PCI.

23 septiembre 2015

CIRCULATION: CARDIOVASCULAR INTERVENTIONS. Left Atrial Thrombus Associated With Interatrial Septal Occluder 5 Years After Implantation

Satish Misra, John Conte, Jon Resar

The patient is a 74-year-old woman with a history of paroxysmal atrial fibrillation, hypertension, and dyslipidemia, who initially presented to an outside hospital in 2009 with a transient ischemic attack. Evaluation identified a patent foramen ovale; a percutaneous closure of the patent foramen ovale was performed using a StarFLEX atrial septal occluder device.

09 noviembre 2015

CIRCULATION: CARDIOVASCULAR INTERVENTIONS. Catheter-Based Therapies for Patients With Medication-Refractory Pulmonary Arterial Hypertension

Jane A. Leopold

Pulmonary arterial hypertension (PAH) is a disease of progressive distal pulmonary artery remodeling that leads to increased pulmonary vascular resistance, right ventricular failure, and premature death. The diagnosis of PAH is made by right heart catheterization when the mean pulmonary artery pressure is ≥25 mm Hg at rest with a pulmonary vascular resistance of >3 Wood units and a pulmonary capillary wedge pressure of <15 mm Hg.1 Once diagnosed with PAH, the 1- and 5-year survival rates are 86.3% and 61.2%, respectively, with a median survival of only 7 years.

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