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Haris Mohammad M 1] Center for Magnetic Resonance and Optical Imaging, Department of Radiology, University of Pennsylvania, Philadelphia, Pennsylvania, USA. - - 2014
ATP derived from the conversion of phosphocreatine to creatine by creatine kinase provides an essential chemical energy source that governs myocardial contraction. Here, we demonstrate that the exchange of amine protons from creatine with protons in bulk water can be exploited to image creatine through chemical exchange saturation transfer (CrEST) ...
Spiro Jon J Interventional Fellow, Queen Elizabeth Hospital Birmingham, - - 2014
Objective: Assessment of the feasibility and outcomes of the 2.5L and 3.8L Impella cardiac pump in patients with severe aortic stenosis (AS) and left ventricular impairment undergoing percutaneous revascularisation (PCI) with or without balloon aortic valvuloplasty (BAV). Methods: We reviewed the clinical and procedural findings from a consecutive series of ...
Spiliopoulos Sotirios - - 2014
We report the case of a 64-year old Caucasian male patient with a tear of the left ventricular driveline just above the driveline-air tube junction. We describe the repair technique and the necessary set of tools.
Jarral Omar A OA Department of Surgery and Cancer, Imperial College London, London, - - 2014
On-pump coronary artery bypass surgery remains the gold standard for complex multivessel disease. Off-pump revascularization has matured as a technique over the last twenty years, but is used in less than 20% of cases worldwide. The poor uptake has been attributed to the significant learning curve in learning the procedure ...
Ancona Roberta R 0000-0003-0007-3122 Noninvasive Cardiology Unit, Department of Cardiology, Monaldi Hospital, A.O.R.N. dei Colli, Via Leonardo Bianchi, 80131 Naples, - - 2014
Although often referred to as "the forgotten chamber", compared with left ventricle (LV), especially in the past years, the left atrium (LA) plays a critical role in the clinical expression and prognosis of patients with heart and cerebrovascular disease, as demonstrated by several studies. Echocardiographers initially focused on early detection ...
Maestrini Viviana V The Heart Hospital Imaging Centre, University College London Hospitals, 16-18 Westmoreland Street, London, W1G 8PH UK ; Department of Cardiovascular, Respiratory, Nephrology, Anesthesiology & Geriatric Sciences, Sapienza University, Rome, - - 2014
Heart failure (HF) is a major and growing cause of morbidity and mortality. Despite initial successes, there have been few recent therapeutic advances. A better understanding of HF pathophysiology is needed with renewed focus on the myocardium itself. A new imaging technique is now available that holds promise. T1 mapping ...
Ortigosa Nuria N I.U. Matemática Pura y Aplicada, Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain. Electronic address: - - 2013
Atrial fibrillation patients can be classified into paroxysmal, persistent and permanent attending to the temporal pattern of this arrhythmia. The surface electrocardiogram hides this differentiation. A classification method to discriminate between the different subtypes of atrial fibrillation by using short segments of electrocardiograms recordings is presented. We will process the ...
Wagner Cynthia E CE aThoracic Surgery Residency Program, University of Virginia bDepartment of Surgery, University of Virginia, Charlottesville, Virginia, - - 2013
Surgical treatment of ischemic mitral regurgitation with reduction annuloplasty is the current standard of practice, yet recurrence rates approaching 30% limit the benefits of repair in this subset of patients. In an effort to improve outcomes, attention has turned to understanding the contribution of leaflet tethering in this disease process. ...
Schaumann Andreas - - 2013
The standard technique for the placement of ventricular catheters (VC) comprises a high proportion of malpositioning of the catheter (12.5 to 40%). Technical advances such as neuronavigation or ultrasound have been shown to increase the accuracy of the procedure. Since these means result in significant technical and time consuming efforts, ...
Hayashi Ichiro I Department of Cardiovascular Surgery, National Hospital Organization Saitama National Hospital, Wako City, Saitama, - - 2013
The objective of this study was to describe a simple and reproducible papillary-ventricular complex technique for repairing functional mitral regurgitation. To avoid a recurrence of mitral regurgitation subsequent to left ventricular remodelling, we performed papillary muscle plication and papillary muscle and head approximation in combination with relocation of the papillary ...
Mihalcz Attila - - 2013
Cardiac resynchronization therapy (CRT) is an important treatment modality for a well-defined subgroup of heart failure patients. Coronary sinus (CS) lead placement is the first-line clinical approach but the insertion is unsuccessful in about 5-10% of the patients. In recent years, the number of CRT recipients and the considerable need ...
Iwaki Ryuma - - 2013
Repair of a postinfarction ventricular septal defect (VSD) is a challenging procedure with a high risk of postoperative residual shunt and subsequent mortality. This retrospective study aimed to assess a modified infarct exclusion technique with a biventricular approach. Nineteen consecutive patients who underwent the infarct exclusion procedure for VSD between ...
Cohn William E - - 2013
As left ventricular assist devices (LVADs) have become more widely used for treating patients with advanced heart failure, the incidence of pump dysfunction requiring pump replacement has increased. When dysfunction is due to pump failure or driveline injury, isolated pump replacement can be curative. We have developed a quick, safe ...
Rubin Geoffrey D - - 2013
Coronary heart disease (CHD) is highly prevalent and is the primary cause of death for both men and women, worldwide. Because the disease develops over many years, there are opportunities to intervene and alter the course of CHD, assuming that there are reliable means for determining which individuals with coronary ...
Monnet Eric E College of Veterinary Medicine and Biomedical Sciences, Department of Clinical Sciences, Colorado State University, Fort Collins, Colorado, - - 2013
Objective: Functional mitral regurgitation (FMR) is a common sequelae of myocardial ischemic disease. It results from annular dilation and outward rotation of the posterior papillary muscle. Different surgical techniques are under investigation for the treatment of FMR. However, an ex vivo model of FMR would be valuable to develop and ...
Cameli Matteo - - 2013
Speckle tracking echocardiography (STE) has recently applied as imaging technique to accurately evaluate right ventricular (RV) function. STE provides a non-Doppler, angle-independent and objective quantification of RV myocardial deformation. Data regarding feasibility, accuracy and clinical applications of RV strain are rapidly gathering, especially in the setting of heart failure patients. ...
Kawasaki Tatsuya - - 2013
Hypertrophic cardiomyopathy (HCM) patients often develop subendocardial ischemia in the left ventricle without atherosclerotic coronary stenosis. Myocardial ischemia plays an important role in the pathophysiology of HCM, but diagnostic techniques for the detection of subendocardial ischemia have not been widely available. We developed specific techniques to quantify subendocardial ischemia on ...
Adhyapak Srilakshmi M - - 2013
Several issues that are inherent in the surgical techniques of surgical ventricular restoration (SVR) need specialized devices or techniques to overcome them, which may not always result in optimal outcomes. We used a non-invasive novel in silico modelling technique to study left ventricular (LV) morphology and function before and after ...
Kramer Peter - - 2013
Different surgical techniques for the treatment of complex transposition of the great arteries (TGA) with ventricular septal defect and left ventricular outflow tract obstruction (LVOTO) have been developed, in particular the Rastelli operation, the réparation à l'étage ventriculaire procedure and the Nikaidoh procedure. The hitherto published results of the Nikaidoh ...
Stys Adam T - - 2013
Angiographically visible thrombus and distal embolization are relatively common during percutaneous coronary intervention (PCI) in myocardial infarction (MI) and correspond to worse outcomes. Several aspiration and thrombectomy devices have been shown to be effective for prevention of distal embolization. We present a technique with successful use of the GuideLiner catheter ...
Schleifer John William - - 2013
Catheter ablation for the management of recurrent ventricular arrhythmias (VAs) is an emerging technology, with good efficacy in selected patients. It is an effective treatment for recurrent VA and can terminate VA during electrical storm. Recent innovations enhance the accuracy of ventricular mapping, allowing for substrate modification while the patient ...
Jin Zhe - - 2013
Adverse cardiac event rates are higher for percutaneous coronary intervention (PCI) of bifurcation lesions. Currently, provisional stenting or a simple stenting strategy is the standard treatment for bifurcated lesions, but its performance remains limited because of a risk of side-branch (SB) closure and a higher rate of target lesion revascularization ...
Une Dai D From the *Division of Cardiac Surgery, and †Division of Cardiac Anesthesiology, University of Ottawa Heart Institute, Ottawa, ON Canada; and ‡McLaren Regional Medical Center Family Medicine, Michigan State University College of Human Medicine, Flint, MI - - 2013
We examined the effects of learning curve on clinical outcomes and operative time in minimally invasive coronary artery bypass grafting (MICS CABG). We studied 210 consecutive MICS CABG cases performed by the same surgeon, composed of 3 cardiopulmonary bypass (CPB)-assisted single-vessel small thoracotomy (SVST), 87 off-pump SVST, 51 CPB-assisted multivessel ...
Kervinen Kari K Division of Cardiology, Department of Medicine, Oulu University Hospital, Oulu, Finland. Electronic address: - - 2013
The aim of the study was to compare long-term follow-up results of crush versus culotte stent techniques in coronary bifurcation lesions. The randomized Nordic Stent Technique Study showed similar 6-month clinical and 8-month angiographic results with the crush and culotte stent techniques of de novo coronary artery bifurcation lesions using ...
Tiroch Klaus - - 2013
The mitral clipping technique is emerging as a promising new treatment option for severe mitral regurgitation. The device was designed and assessed in intermediate risk populations, which is in contrast to the real world, where most patients are deemed to be at very high risk for open heart surgery. The ...
Dziewierz Artur - - 2013
Objectives: We sought to evaluate the impact of direct stenting technique on angiographic and clinical outcomes of patients with ST-segment elevation myocardial infarction (STEMI) undergoing primary angioplasty (PCI). Methods: Data on 1,419 patients who underwent immediate PCI for STEMI with implantation of ≥1 stent within native coronary artery were retrieved ...
Trezzi Matteo - - 2013
Perventricular ventricular septal defect (VSD) closure has been adopted as a therapeutic option for selected patients with muscular VSDs. This technique may combine some of the advantages of surgical and interventional techniques. Complication rates have been low: only one case of procedure-related left ventricular (LV) pseudoaneurysm has been documented. We ...
Leibundgut Gregor - - 2013
Coronary angiography and percutaneous coronary intervention (PCI) over the radial approach are becoming more frequent and are recommended by the European Association of Percutaneous Cardiovascular Interventions and European Society of Cardiology. The radial approach leads to less bleeding and improved survival in ST-segment elevation myocardial infarction. Pronounced guide catheter manipulation ...
Alegria-Barrero E - - 2013
Although provisional T-stenting with stenting of the main branch and optional side branch stenting is nowadays the default strategy generally preferred for simple bifurcation lesions, percutaneous coronary intervention (PCI) of complex true bifurcation lesions remains a difficult task to achieve also with modern second generation drug eluting stents. Treatment of ...
Dai Jian - - 2013
Controlled antegrade and retrograde subintimal tracking (CART) or reverse CART techniques is the final step for percutaneous revascularization of coronary chronic total occlusion (CTO), but it still represents technical challenges and risk in interventional procedures. Our purpose was to utilize intravascular ultrasound (IVUS)-guided reverse CART approach for percutaneous revascularization of ...
Erdogan Ercan - - 2013
Successful revascularization of chronic total occlusions has been associated with improved left ventricular systolic function, reduced anginal symptoms, increased exercise capacity, and increased survival. This study was conducted to determine the impact of revascularization in chronic total occlusion on left ventricular function using novel echocardiographic techniques. A total of 129 ...
Hechadi Jawad - - 2013
In some patients undergoing a valve-sparing reimplantation technique, a coronary ostium may be very close to one of the commissures. This condition jeopardizes the coronary ostium patency and valve reimplantation. The authors describe a simple and safe modification of the reimplantation technique, leaving the misplaced coronary ostium attached to the ...
Cappabianca Giangiuseppe - - 2013
Chronic ischemic mitral regurgitation (MR) denotes abnormal function of normal leaflets resulting from left ventricular enlargement. We present the midterm results of a tailored mitral repair technique using a combination of the following subvalvular procedures: (1) detachment and reimplantation of secondary chordae on the free edge of the anterior leaflet ...
van Dam Peter M - - 2013
The precise localization of the site of origin of a premature ventricular contractions (PVC) prior to ablation would facilitate the planning and execution of the electrophysiological procedure. Current electrocardiographic imaging (ECGI) techniques require body surface maps, a costly and complex procedure, that requires as many as 256 leads to localize ...
Deora Surender - - 2013
Percutaneous transvenous mitral commissurotomy (PTMC) is an acceptable and preferred alternative to surgical commissurotomy in suitable patients with severe rheumatic mitral stenosis. Various over-the-wire techniques have been described in the past for difficult left ventricle (LV) entry during PTMC. Here, we report two cases of successful PTMC with difficult LV ...
Patel Vishal G - - 2013
Percutaneous coronary intervention (PCI) during ST-segment elevation myocardial infarction (STEMI) can be challenging due to limited distal vessel visualization. We present a case of challenging antegrade wiring during PCI of an inferior STEMI resulting in inadvertent subintimal wiring and ballooning. Recognition of this scenario prior to stenting allowed vessel rescue ...
Godino Cosmo - - 2013
The guided-STAR technique is an alternative anterograde approach for treatment of coronary chronic total occlusion (CTO) and it is usually followed by implantation of multiple stents. We describe a case of residual long coronary dissection left unstented after guided-STAR, with good results at 2months follow-up. This case emphasizes the fact ...
Omelchenko Alexander Y AY Academician EN Meshalkin State Research Institute of Circulation Pathology, Novosibirsk, - - 2014
To present our first experience in perventricular closure of ventricular septal defect, which is in our opinion, an important adjunct to current ventricular septal defect treatment options. Surgical closure under cardiopulmonary bypass is the treatment of choice for a perimembranous ventricular septal defect. Percutaneous techniques have technical limitations. To date, ...
Pei Han-Jun - - 2013
Currently available evidence suggests that outcomes are less favorable when left main (LM) bifurcation lesions are treated with 2-stent techniques compared with a single-stent technique. We aimed to evaluate the long-term outcomes of the 2-stent techniques for treating unprotected LM bifurcation lesions in Chinese patients. We enrolled 301 consecutive patients ...
Evtushenko Alexey V - - 2013
Restrictive annuloplasty remains the most widespread technique for the correction of chronic ischemic mitral regurgitation (IMR). However, this technique only partially corrects the underlying pathophysiology and does not address the restricted leaflet motions during systole that result from progressive left ventricular (LV) remodeling. A novel experimental model of IMR was ...
Marino Paolo - - 2013
Assessment of diastolic function is nowadays done noninvasively; such an approach provides unambiguous information in a large, albeit not complete, proportion of patients suffering from heart failure with preserved ejection fraction (HFpEF). In this review, echocardiography is used in order to diagnose and stage diastolic dysfunction, including abnormal hemodynamic features ...
Kloner Robert A - - 2013
Oxygen Supply/Demand Approach to Reducing Infarct Size Great strides have been made in the treatment of acute myocardial infarction (MI). Improved outcomes and reduced mortality are largely the result of opening the occluded infarct artery as soon as possible and by keeping it open. Early reperfusion consistently reduces myocardial infarct ...
Kitagawa Tetsuya - - 2013
The management of patients with multiple muscular trabecular ventricular septal defects (VSDs) remains controversial. In the past two decades, innovative techniques including a right ventricular apical infundibulotomy and transcatheter, intraoperative and perventricular device closure have been exploited, and essential right atrial approach and limited apical left ventriculotomy have also been ...
Cronin Edmond M - - 2013
AIMS: Cryoballoon ablation is an emerging therapy for atrial fibrillation (AF). However, the Arctic Front cryoballoon (Medtronic) cannot be localized on current electroanatomic mapping (EAM) systems. We describe a technique to visualize guidewires in an impedance-based EAM system.METHODS AND RESULTS: A novel technique for real-time guidewire localization in an EAM ...
Jeong Dong Seop - - 2013
Atrial fibrillation (AF) is the most common chronic arrhythmia in the world, and it is associated with an increased long-term risk of stroke, heart failure, and all-cause mortality. To overcome the limitations of transvenous radiofrequency (RF) ablation for AF, total thoracoscopic ablation (TTA) has evolved as a new technique. TTA ...
Avgerinos Dimitrios V - - 2013
Right heart failure is a rare but often fatal complication both in the pre- and postoperative setting. Right heart support with a ventricular assist device inserted in the operating room through median sternotomy can be a time-consuming procedure that requires a reoperation for removal. In cases of urgent need of ...
Yilmaz U - - 2013
BACKGROUND AND PURPOSE:Mechanical thrombectomy with stent retrievers in acute stroke has emerged as a promising new technique, with the highest recanalization rate of the therapeutic procedures available thus far. However, in up to 20% of the cases, mechanical thrombectomy with stent retrievers results in poor angiographic outcomes, with Thrombolysis in ...
Zile Michael R - - 2013
Comprehensive diagnostic criteria, accurate prognostic indicators, and effective treatment for patients with heart failure and a preserved ejection fraction (HFpEF) represent a critically important unmet need in cardiovascular medicine. Novel approaches to fill this unmet need are likely to be facilitated by targeting the underlying and unique pathophysiologic mechanisms that ...
Chrysanthou-Baustert Isabelle - - 2013
BACKGROUND: The diagnostic sensitivity of various SPECT MPI procedures was assessed using a pumping cardiac phantom with variable defects inserted in the myocardial wall of the left ventricle. METHODS AND RESULTS: A diagnostic evaluation of 142 myocardial defects was performed. A diagnosis blinded to prior-known conditions was compared to the ...
Naganuma Toru T Interventional Cardiology Unit, San Raffaele Scientific Institute, Milan, - - 2013
This study sought to report long-term clinical outcomes in patients treated with the provisional T-stenting and small protrusion (TAP) technique. Several strategies have been proposed for treating bifurcation lesions, each with its own merits and technical challenges. The TAP technique is a relatively new strategy that is technically less challenging, ...
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