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Shear Stress

Abstract

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Low shear stress induces vascular eNOS uncoupling via autophagy-mediated eNOS phosphorylation Role of local coronary blood flow patterns and shear stress on the development of microvascular and epicardial endothelial dysfunction and coronary plaque Comparison Of High Shear Stress-Induced Thrombotic And Thrombolytic Effect Between Aspirin, Clopidogrel And Very Low Dose Rivaroxaban And Aspirin, Ticagrelor Treatments In Patients With Acute Coronary Syndrome Evolving insights into the role of local shear stress in late stent failure from neoatherosclerosis formation and plaque destabilization Low shear stress induces endothelial reactive oxygen species via the AT1R/eNOS/NO pathway Role of Low Endothelial Shear Stress and Plaque Characteristics in the Prediction of Nonculprit Major Adverse Cardiac Events: The PROSPECT Study Transcatheter Aortic Valve Implantation Represents an Anti-Inflammatory Therapy Via Reduction of Shear Stress-Induced, Piezo-1-Mediated Monocyte Activation Implications of the local hemodynamic forces on the formation and destabilization of neoatherosclerotic lesions
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GuidelineVolume 11, Issue 9, May 2018

JOURNAL:JACC Cardiovasc Interv. Article Link

Defining Staged Procedures for Percutaneous Coronary Intervention Trials A Guidance Document

E Spitzer, E Mc Fadden, P Vranckx et al. Keywords: clinical endpoint adjudication; clinical trial; coronary revascularization; staged procedure

ABSTRACT


Patients in coronary intervention trials may require more than 1 procedure to complete the intended revascularization strategy. However, these staged interventions are not consistently defined. Standardized definitions are needed to allow meaningful comparisons of this outcome among trials. This document provides guidance on relevant parameters involving staged procedures, including minimum data collection and consistent classification of coronary procedures initially identified as staged; the aim is to achieve consistency among clinical trialists, sponsors, health authorities, and regulators. Definitions were developed jointly among representatives of academic institutions and clinical research organizations based on clinical trial experience and published literature. Reasons for staged procedures were identified and include baseline kidney function, contrast load and radiation exposure, lesion complexity, and patient or operator fatigue. Moreover, nonclinical reasons include procedure scheduling and reimbursement. Management of staged procedures should be a standalone section in clinical trial protocols and clinical events committee charters. These documents should clearly define a time window for staged procedures that allows latitude for local policies, while respecting accepted clinical guidelines, and consistency with study objectives. Investigators should document in the case report form the intent to stage a procedure, the lesions to be treated, and the reasons for staging, preferably before randomization. Ideally, all reinterventions, or at least all procedures performed after the recommended time window, those in which data suggest an anticipated procedure due to a worsening condition and those where a revascularization is attempted in the target vessel, should be reviewed by an independent clinical events committee.