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ESTUDIOS


01 junio 2012

CIRCULATION: CARDIOVASCULAR INTERVENTIONS. Atherotome Dislodgement and Successful Retrieval During Cutting Balloon Pulmonary Angioplasty

Holly C. DeSena, MD, Claudio Ramaciotti, MD and Alan W. Nugent, MBBS

Cutting balloons (CBs) are beneficial for dilation of resistant branch pulmonary artery (PA) stenosis in children.1 There are rare reports of atherotome fracture2 and a Food and Drug Administration adverse event report of a fractured atherotome dislodging and remaining in the patient.3 We report CB atherotome dislodgement and embolization with successful retrieval in a patient with Alagille syndrome and branch PA stenosis.

01 junio 2012

EUROPEAN HEART JOURNAL. Systemic inflammatory response syndrome predicts increased mortality in patients after transcatheter aortic valve implantation

Jan-Malte Sinning, Anne-Cathérine Scheer, Viktoria Adenauer, Alexander Ghanem, Christoph Hammerstingl, Robert Schueler, Cornelius Müller, Mariuca Vasa-Nicotera, Eberhard Grube, Georg Nickenig and Nikos Werner

Aims: The outcome of patients undergoing surgical or interventional therapy is unfavourably influenced by severe systemic inflammation. We assessed the impact of a systemic inflammatory response syndrome (SIRS) on the outcome after transcatheter aortic valve implantation (TAVI).

01 junio 2012

THE AMERICAN JOURNAL OF CARDIOLOGY. Role of Non-High-Density Lipoprotein Cholesterol in Predicting Cerebrovascular Events in Patients Following Myocardial Infarction

Nitin Mahajan, MD, MPH , Brian A. Ference, MD, MPhil, MSc , Natasha Arora, MD , Ramesh Madhavan, MD , Pratik Bhattacharya, MD, MPH , Rajeev Sudhakar, MD , Amit Sagar, MD , Yun Wang, PhD , Frank Sacks, MD , Luis Afonso, MD

Although there appears to be a role for statins in reducing cerebrovascular events, the exact role of different lipid fractions in the etiopathogenesis of cerebrovascular disease (CVD) is not well understood. A secondary analysis of data collected for the placebo arm (n = 2,078) of the Cholesterol and Recurrent Events (CARE) trial was performed. The CARE trial was a placebo-controlled trial aimed at testing the effect of pravastatin on patients after myocardial infarction. Patients with histories of CVD were excluded from the study. A Cox proportional-hazards model was used to evaluate the association between plausible risk factors (including lipid fractions) and risk for first incident CVD in patients after myocardial infarction. At the end of 5 years, 123 patients (6%) had incident CVD after myocardial infarction (76 with stroke and 47 with transient ischemic attack). Baseline non–high-density lipoprotein (HDL) cholesterol level emerged as the only significant lipid risk factor that predicted CVD; low-density lipoprotein cholesterol and HDL cholesterol were not significant. The adjusted hazard ratios (adjusted for age, gender, hypertension, diabetes mellitus, and smoking) for CVD were 1.28 (95% confidence interval [CI] 1.06 to 1.53) for non-HDL cholesterol, 1.14 (95% CI 0.96 to 1.37) for low-density lipoprotein cholesterol, and 0.90 (95% CI 0.75 to 1.09) for HDL cholesterol (per unit SD change of lipid fractions). This relation held true regardless of the level of triglycerides. After adjustment for age and gender, the hazard ratio for the highest natural quartile of non-HDL was 1.76 (95% CI 1.05 to 2.54), compared to 1.36 (95% CI 0.89 to 1.90) for low-density lipoprotein cholesterol. In conclusion, non-HDL cholesterol is the strongest predictor among the lipid risk factors of incident CVD in patients with established coronary heart disease.

01 junio 2012

JACC. Clinical Outcomes After Transcatheter Aortic Valve Replacement Using Valve Academic Research Consortium Definitions. A Weighted Meta-Analysis of 3,519 Patients From 16 Studies

Philippe Généreux, MD; Stuart J. Head, MSc; Nicolas M. Van Mieghem, MD; Susheel Kodali, MD; Ajay J. Kirtane, MD, SM; Ke Xu, PhD; Craig Smith, MD; Patrick W. Serruys, MD, PhD; A. Pieter Kappetein, MD, PhD; Martin B. Leon, MD

Objectives: This study sought to perform a weighted meta-analysis to determine the rates of major outcomes after transcatheter aortic valve replacement (TAVR) using Valve Academic Research Consortium (VARC) definitions and to evaluate their current use in the literature.

01 junio 2012

CIRCULATION: CARDIOVASCULAR INTERVENTIONS. Comparison of Invasive and Noninvasive Assessment of Aortic Stenosis Severity in the Elderly

Background—Aortic valve area (AVA) in aortic stenosis (AS) can be assessed noninvasively or invasively, typically with similar results. These techniques have not been validated in elderly patients, where common assumptions make them most prone to error. Accurate assessment of AVA is crucial to determine which patients are appropriate candidates for aortic valve replacement.

01 junio 2012

EUROPEAN HEART JOURNAL. Early percutaneous mitral commissurotomy vs. conventional management in asymptomatic moderate mitral stenosis

Duk-Hyun Kang, Chang Hoon Lee, Dae-Hee Kim, Sung-Cheol Yun, Jong-Min Song, Cheol-Whan Lee, Jae-Kwan Song, Seong-Wook Park and Seung-Jung Park

Aims The optimal timing of percutaneous mitral commissurotomy (PMC) remains controversial in asymptomatic patients with moderate mitral stenosis (MS). We sought to compare the long-term outcomes of early preemptive PMC and a conventional treatment strategy.

01 junio 2012

THE AMERICAN JOURNAL OF CARDIOLOGY. Frequency and Causes of Stroke During or After Transcatheter Aortic Valve Implantation

Rutger-Jan Nuis, MSc , Nicolas M. Van Mieghem, MD , Carl J. Schultz, MD, PhD , Adriaan Moelker, MD, PhD , Robert M. van der Boon, MSc , Robert Jan van Geuns, MD, PhD , Aad van der Lugt, MD, PhD , Patrick W. Serruys, MD, PhD , Josep Rodés-Cabau, MD , Ron T. van Domburg, PhD , Peter J. Koudstaal, MD, PhD , Peter P. de Jaegere, MD, PhD

Transcatheter aortic valve implantation (TAVI) is invariably associated with the risk of clinically manifest transient or irreversible neurologic impairment. We sought to investigate the incidence and causes of clinically manifest stroke during TAVI. A total of 214 consecutive patients underwent TAVI with the Medtronic-CoreValve System from November 2005 to September 2011 at our institution. Stroke was defined according to the Valve Academic Research Consortium recommendations. Its cause was established by analyzing the point of onset of symptoms, correlating the symptoms with the computed tomography-detected defects in the brain, and analyzing the presence of potential coexisting causes of stroke, in addition to a multivariate analysis to determine the independent predictors. Stroke occurred in 19 patients (9%) and was major in 10 (5%), minor in 3 (1%), and transient (transient ischemic attack) in 6 (3%). The onset of symptoms was early (≤24 hours) in 8 patients (42%) and delayed (>24 hours) in 11 (58%). Brain computed tomography showed a cortical infarct in 8 patients (42%), a lacunar infarct in 5 (26%), hemorrhage in 1 (5%), and no abnormalities in 5 (26%). Independent determinants of stroke were new-onset atrial fibrillation after TAVI (odds ratio 4.4, 95% confidence interval 1.2 to 15.6), and baseline aortic regurgitation grade III or greater (odds ratio 3.2, 95% confidence interval 1.1 to 9.3). In conclusion, the incidence of stroke was 9%, of which >1/2 occurred >24 hours after the procedure. New-onset atrial fibrillation was associated with a 4.4-fold increased risk of stroke. In conclusion, these findings indicate that improvements in postoperative care after TAVI are equally, if not more, important for the reduction of periprocedural stroke than preventive measures during the procedure.

01 junio 2012

JACC. First Results of the DEB-AMI (Drug Eluting Balloon in Acute ST-Segment Elevation Myocardial Infarction) Trial

Anouar Belkacemi, MD; Pierfrancesco Agostoni, MD, PhD; Hendrik M. Nathoe, MD, PhD; Michiel Voskuil, MD, PhD; ChunLai Shao, MD; Eric Van Belle, MD, PhD; Thierry Wildbergh, MD; Luigi Politi, MD; Pieter A. Doevendans, MD, PhD; Giuseppe M. Sangiorgi, MD; Pieter R. Stella, MD, PhD

Objectives: The goal of this study was to compare angiographic, intravascular imaging, and functional parameters, as well as the clinical outcomes of patients treated with drug-eluting balloon (DEB) plus bare-metal stent (BMS) versus BMS versus drug-eluting stent (DES) for ST-segment elevated acute myocardial infarction (STEMI).

01 mayo 2013

JACC. Targeting P-Selectin During Coronary Interventions. The Elusive Link Between Inflammation and Platelets to Prevent Myocardial Damage

Fernando Alfonso, MD, PhD; Dominick J. Angiolillo, MD, PhD

Unprecedented advancements in interventional techniques and the advent of new drug-eluting stents coupled with refinements in adjuvant antithrombotic strategies have led to significant improvement in acute procedural success and long-term clinical outcomes after percutaneous coronary interventions (PCI) (1).

01 mayo 2012

JACC. The Need to Improve the Appropriate Use of Coronary Revascularization. Challenges and Opportunities

John Spertus, MD, MPH; Paul Chan, MD, MSc

We stand at the precipice of extraordinary changes in medicine. Prior generations of physicians sought to apply any and all treatments available to preserve the health and functioning of patients, despite incomplete knowledge of disease processes and the evidence base to know the efficacy of alternative treatment strategies. Over the past 4 decades, an explosion of technology and treatments, with varying degrees of clinical evidence to support or refute their value, have been introduced. Congruent with these changes has emerged an unsustainable explosion in the costs of care, such that the economic future of the entire nation seems to be held hostage to “bending the cost curve” and creating a more sustainable model of lowering costs and maximizing the value of healthcare. Professional leadership in defining how best to direct therapy to those who most benefit, while withholding it in those with little to benefit (or are harmed), is the most promising way to maximize the value of healthcare—preserving the benefits of medical progress while limiting costs (1- 2). Toward that end, the recently updated Manual of Medical Ethics by the American College of Physicians explicitly states that “physicians have a responsibility to practice effective and efficient health care and to use health care resources responsibly … to help ensure that resources are equitably available” (3).

01 mayo 2012

JACC: CARDIOVASCULAR INTERVENTIONS. Evaluation of Multidimensional Geriatric Assessment as a Predictor of Mortality and Cardiovascular Events After Transcatheter Aortic Valve Implantation

Stefan Stortecky, MD; Andreas W. Schoenenberger, MD; André Moser, PhD; Bindu Kalesan, PhD; Peter Jüni, MD; Thierry Carrel, MD; Seraina Bischoff, RN; Christa-Maria Schoenenberger, RN; Andreas E. Stuck, MD; Stephan Windecker, MD; Peter Wenaweser, MD

Objectives: This study evaluated Multidimensional Geriatric Assessment (MGA) as predictor of mortality and major adverse cardiovascular and cerebral events (MACCE) after transcatheter aortic valve implantation (TAVI).

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