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ESTUDIOS


10 mayo 2016

CIRCULATION. Effects of Age and Sex on Clinical Outcomes After Percutaneous Coronary Intervention Relative to Coronary Artery Bypass Grafting in Patients With Triple-Vessel Coronary Artery Disease

Kyohei Yamaji , Hiroki Shiomi , Takeshi Morimoto , Kenji Nakatsuma , Toshiaki Toyota , Koh Ono , Yutaka Furukawa , Yoshihisa Nakagawa , Kazushige Kadota , Kenji Ando , Shinichi Shirai , Tomoya Onodera , Hirotoshi Watanabe , Masahiro Natsuaki , Ryuzo Sakata , Michiya Hanyu , Noboru Nishiwaki , Tatsuhiko Komiya and Takeshi Kimura

Background: Age and sex are important considerations in the choice between percutaneous coronary intervention (PCI) and coronary artery bypass grafting (CABG) in daily clinical practice.

24 mayo 2016

CIRCULATION. Obstructive Sleep Apnea and Cardiovascular Events After Percutaneous Coronary Intervention

Chi-Hang Lee , Rishi Sethi , Ruogu Li , Hee-Hwa Ho , Thet Hein , Man-Hong Jim , Germaine Loo , Chieh-Yang Koo , Xiao-Fei Gao , Sharad Chandra , Xiao-Xiao Yang , Sofia F. Furlan , Zhen Ge , Ajeya Mundhekar , Wei-Wei Zhang , Carlos Henrique G. Uchôa , Rajiv Bharat Kharwar , Po-Fun Chan , Shao-Liang Chen , Mark Y. Chan , Arthur Mark Richards , Huay-Cheem Tan , Thun-How Ong , Glenn Roldan , Bee-Choo Tai , Luciano F. Drager and Jun-Jie Zhang

Background: There is a paucity of data from large cohort studies examining the prognostic significance of obstructive sleep apnea (OSA) in patients with coronary artery disease. We hypothesized that OSA predicts subsequent major adverse cardiac and cerebrovascular events (MACCEs) in patients undergoing percutaneous coronary intervention.

24 mayo 2016

CIRCULATION. Considerations and Recommendations for the Introduction of Objective Performance Criteria for Transcatheter Aortic Heart Valve Device Approval

Stuart J. Head , Darren Mylotte , Michael J. Mack , Nicolo Piazza , Nicolas M. van Mieghem , Martin B. Leon , A. Pieter Kappetein and David R. Holmes Jr.

In the United States, new surgical heart valves can be approved on the basis of objective performance criteria (OPC). In contrast, the US Food and Drug Administration traditionally requires stricter criteria for transcatheter heart valve (THV) approval, including randomized, clinical trials. Recent US Food and Drug Administration approval of new-generation THVs based on single-arm studies has generated interest in alternative study approaches for THV device approval. This review evaluates whether THV device approval could follow a pathway analogous to that of surgical heart valves by incorporating OPC and provides several considerations and recommendations. Factors to be taken into account in the construction of OPC include the maturity of THV technology, variability in transcatheter aortic valve replacement practice, end points included as OPC, follow-up terms for specific OPC, patient populations to which these OPC apply, and (statistical) methods for OPC development. We recommend that approval of THV devices in the United States for low- and intermediate-risk patients or for new indications should provisionally rely on data from randomized, clinical trials. However, it is recommended that formal OPC be applied for approval of new-generation THVs for use in high- and extreme-risk patient populations.

24 mayo 2016

CIRCULATION. Individualizing Duration of Dual Antiplatelet Therapy After Acute Coronary Syndrome or Percutaneous Coronary Intervention

Akshay Bagai , Deepak L. Bhatt , John W. Eikelboom , G.B. John Mancini , Eric A. Cohen , Ram Vijayaraghavan , Asim N. Cheema , Jacob A. Udell , Joel Niznick , Jean-Francois Tanguay , Subodh Verma and Shamir R. Mehta

Background: DAPT with aspirin and a P2Y12 receptor inhibitor is an essential component of the treatment of patients with acute coronary syndromes (ACS) and those undergoing PCI. DAPT after ACS reduces death and MI compared with aspirin alone, both in patients treated with PCI and in those who are managed conservatively. After elective PCI for stable coronary disease, DAPT reduces ischemic events and stent thrombosis (ST). However, these benefits come at the cost of increased risk of bleeding, raising the question about how to best balance efficacy and safety in determining the duration of DAPT.

31 mayo 2016

CIRCULATION. Percutaneous Coronary Intervention Versus Coronary Artery Bypass Grafting in Patients With Left Ventricular Dysfunction

Rajiv Gulati and Bernard J. Gersh

Decades have passed since studies comparing coronary artery bypass grafting (CABG) with medical therapy for multivessel coronary disease indicated a survival advantage of surgery in the subset of patients with significant left ventricular impairment. These investigations changed the prevailing clinical impression such that severe left ventricular (LV) dysfunction might be an indication for revascularization as opposed to a relative contraindication. Although the studies might currently be deemed obsolete by many measures, they continue to inform societal guidelines with regard to CABG and LV dysfunction. Recently, the long-term outcomes after the Surgical Treatment for Ischemic Heart Failure (STICH) trial have reinforced the potential benefits of surgical revascularization in patients with congestive heart failure and an ejection fraction of < 35%. Over the intervening period, numerous trials have compared percutaneous coronary intervention (PCI) with CABG in patients with stable angina and multivessel disease. Aside from diabetes mellitus, the trials by and large have demonstrated equivalence in the end points of death and myocardial infarction. So can one extrapolate equivalence for PCI with CABG in patients with LV dysfunction? The short answer is no. There is scant direct evidence from randomized trials comparing the 2 methods of revascularization because patients with congestive heart failure or severe LV dysfunction have typically been underrepresented or excluded.

31 mayo 2016

CIRCULATION. Revascularization in Patients With Multivessel Coronary Artery Disease and Severe Left Ventricular Systolic Dysfunction: Everolimus-Eluting Stents Versus Coronary Artery Bypass Graft Surgery

Sripal Bangalore, Yu Guo, Zaza Samadashvili, Saul Blecker and Edward L. Hannan

Background: Guidelines recommend coronary artery bypass graft surgery (CABG) over percutaneous coronary intervention (PCI) for multivessel disease and severe left ventricular systolic dysfunction. However, CABG has not been compared with PCI in such patients in randomized trials.

01 febrero 2017

CIRCULATION: CARDIOVASCULAR INTERVENTIONS. Increased Radial Access Is Not Associated With Worse Femoral Outcomes for Percutaneous Coronary Intervention in the United Kingdom

William Hulme , Matthew Sperrin , Evangelos Kontopantelis , Karim Ratib , Peter Ludman , Alex Sirker , Tim Kinnaird , Nick Curzen , Chun Shing Kwok , Mark De Belder , James Nolan and Mamas A. Mamas

Background: The radial artery is increasingly adopted as the primary access site for cardiac catheterization because of patient preference, lower bleeding rates, cost effectiveness, and reduced risk of mortality in high-risk patient groups. Concerns have been expressed that operators/centers have become increasingly unfamiliar with transfemoral access. The aim of this study was to assess whether a change in access site practice toward transradial access nationally has led to worse outcomes in percutaneous coronary intervention procedures performed through the transfemoral access approach.

01 febrero 2017

CIRCULATION: CARDIOVASCULAR INTERVENTIONS. Clinical Outcome of Double Kissing Crush Versus Provisional Stenting of Coronary Artery Bifurcation Lesions

Shao-Liang Chen , Teguh Santoso , Jun-Jie Zhang , Fei Ye , Ya-Wei Xu , Qiang Fu , Jing Kan , Feng-Fu Zhang , Yong Zhou , Du-Jiang Xie and Tak W. Kwan

Background: Provisional stenting is effective for anatomic simple bifurcation lesions. Double kissing crush stenting reduces the 1-year rate of target lesion revascularization. This study aimed to investigate the 5-year clinical results of the DKCRUSH-II study (Randomized Study on Double Kissing Crush Technique Versus Provisional Stenting Technique for Coronary Artery Bifurcation Lesions).

01 enero 2017

CIRCULATION: CARDIOVASCULAR INTERVENTIONS. Bioresorbable Vascular Scaffolds for the Treatment of Chronic Total Occlusions: An International Multicenter Registry

Satoru Mitomo , Toru Naganuma , Yusuke Fujino , Hiroyoshi Kawamoto , Sandeep Basavarajaiah , Michael Pitt , Wei-Hsian Yin , Damras Tresukosol , Antonio Colombo and Sunao Nakamura

Background: There are only limited studies reporting clinical outcomes after bioresorbable vascular scaffold (BVS; Absorb; Abbott Vascular, Santa Clara, CA) implantation for coronary chronic total occlusions (CTO). The aim of this study was to evaluate the real-world feasibility and safety of BVS implantation for the treatment of CTO.

01 enero 2017

CIRCULATION: CARDIOVASCULAR INTERVENTIONS. Thirty-Day Readmissions After Transcatheter Aortic Valve Replacement in the United States: Insights From the Nationwide Readmissions Database

Dhaval Kolte , Sahil Khera , M. Rizwan Sardar , Neil Gheewala , Tanush Gupta , Saurav Chatterjee , Andrew Goldsweig , Wilbert S. Aronow , Gregg C. Fonarow , Deepak L. Bhatt , Adam B. Greenbaum , Paul C. Gordon , Barry Sharaf and J. Dawn Abbott

Background: Readmissions after cardiac procedures are common and contribute to increased healthcare utilization and costs. Data on 30-day readmissions after transcatheter aortic valve replacement (TAVR) are limited.

01 mayo 2017

CIRCULATION: CARDIOVASCULAR INTERVENTIONS. Long-Term Efficacy and Safety of Everolimus-Eluting Bioresorbable Vascular Scaffolds Versus Everolimus-Eluting Metallic Stents: A Meta-Analysis of Randomized Trials

Ahmed N. Mahmoud, Amr F. Barakat, Akram Y. Elgendy, Erik Schneibel, Amgad Mentias, Ahmed Abuzaid and Islam Y. Elgendy

Background: Data regarding the long-term efficacy and safety of everolimus-eluting bioresorbable vascular scaffolds (BVS) compared with everolimus-eluting stents are limited. This meta-analysis aimed to compare the long-term outcomes with both devices.

01 mayo 2017

CIRCULATION: CARDIOVASCULAR INTERVENTIONS. High- Versus Low-Gradient Severe Aortic Stenosis: Demographics, Clinical Outcomes, and Effects of the Initial Aortic Valve Replacement Strategy on Long-Term Prognosis

Tomohiko Taniguchi , Takeshi Morimoto , Hiroki Shiomi , Kenji Ando , Norio Kanamori , Koichiro Murata , Takeshi Kitai , Yuichi Kawase , Chisato Izumi , Makoto Miyake , Hirokazu Mitsuoka , Masashi Kato , Yutaka Hirano , Shintaro Matsuda , Tsukasa Inada , Kazuya Nagao , Tomoyuki Murakami , Yasuyo Takeuchi , Keiichiro Yamane , Mamoru Toyofuku , Mitsuru Ishii , Eri Minamino-Muta , Takao Kato , Moriaki Inoko , Tomoyuki Ikeda , Akihiro Komasa , Katsuhisa Ishii , Kozo Hotta , Nobuya Higashitani , Yoshihiro Kato , Yasutaka Inuzuka , Chiyo Maeda , Toshikazu Jinnai , Yuko Morikami , Naritatsu Saito , Kenji Minatoya and Takeshi Kimura

Background: There is considerable debate on the management of patients with low-gradient severe aortic stenosis (LG-AS), defined as aortic valve area <1 cm2 with peak aortic jet velocity <=4.0 m/s, and mean aortic pressure gradient <=40 mm Hg.

01 abril 2017

CIRCULATION: CARDIOVASCULAR INTERVENTIONS. Fractional Flow Reserve–Guided Complete Revascularization Improves the Prognosis in Patients With ST-Segment–Elevation Myocardial Infarction and Severe Nonculprit Disease

Jacob Lønborg , Thomas Engstrøm , Henning Kelbæk , Steffen Helqvist , Lene Kløvgaard , Lene Holmvang , Frants Pedersen , Erik Jørgensen , Kari Saunamäki , Peter Clemmensen , Ole De Backer , Jan Ravkilde , Hans-Henrik Tilsted , Anton Boel Villadsen , Jens Aarøe , Svend Eggert Jensen , Bent Raungaard , Lars Køber and Dan Eik Høfsten

Background: The impact of disease severity on the outcome after complete revascularization in patients with ST-segment–elevation myocardial infarction and multivessel disease is uncertain. The objective of this post hoc study was to evaluate the impact of number of diseased vessel, lesion location, and severity of the noninfarct-related stenosis on the effect of fractional flow reserve–guided complete revascularization.

01 abril 2017

CIRCULATION: CARDIOVASCULAR INTERVENTIONS. Choice of Stent for Percutaneous Coronary Intervention of Saphenous Vein Grafts

Javaid Iqbal , Chun Shing Kwok , Evangelos Kontopantelis , Mark A. de Belder , Peter F. Ludman , Adrian Large , Rob Butler , Amr Gamal , Tim Kinnaird , Azfar Zaman and Mamas A. Mamas

Background: There are limited data on comparison of contemporary drug-eluting stent (DES) platforms, previous generation DES, and bare-metal stents (BMS) for percutaneous coronary intervention in saphenous vein grafts (SVG). We aimed to assess clinical outcomes following percutaneous coronary intervention to SVG in patients receiving bare-metal stents (BMS), first-generation DES, and newer generation DES in a large unselected national data set from the BCIS (British Cardiovascular Intervention Society).

01 marzo 2017

CIRCULATION: CARDIOVASCULAR INTERVENTIONS. Pregnancy and the Risk of Spontaneous Coronary Artery Dissection: An Analysis of 120 Contemporary Cases

Ofer Havakuk, Sorel Goland, Anil Mehra and Uri Elkayam

Background: Because of the rarity of this condition, information on pregnancy-associated spontaneous coronary artery dissection is limited. We reviewed a large number of contemporary pregnancy-associated spontaneous coronary artery dissection cases in an attempt to define the clinical characteristics and provide management recommendations.

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