Publications by authors named "Viraj Raygor"
Measurement and Application of Incidentally Detected Coronary Calcium: JACC Review Topic of the Week.
J Am Coll Cardiol
April 2024
Coronary artery calcium (CAC) scoring is a powerful tool for atherosclerotic cardiovascular disease risk stratification. The nongated, noncontrast chest computed tomography scan (NCCT) has emerged as a source of CAC characterization with tremendous potential due to the high volume of NCCT scans. Application of incidental CAC characterization from NCCT has raised questions around score accuracy, standardization of methodology including the possibility of deep learning to automate the process, and the risk stratification potential of an NCCT-derived score.
View Article and Find Full Text PDFAccuracy of incidental visual coronary artery calcium assessment compared with dedicated coronary artery calcium scoring.
J Cardiovasc Comput Tomogr
December 2023
Article Synopsis
- Visual coronary artery calcium (CAC) can be detected through routine chest CT scans, but accuracy in scoring may vary depending on the radiologist’s specialty and the use of contrast.
- A study involving 934 patients assessed the correlation between visual CAC estimation on non-gated CT scans and actual CAC scores, finding a strong correlation overall, especially among those with moderate-to-large CAC.
- The absence of visible CAC on non-gated scans does not necessarily indicate low cardiovascular risk, particularly in patients whose scans were enhanced with contrast or interpreted by non-specialist radiologists.
Purpose Of Review: The purpose of this review is to discuss the updated guideline recommendations on management of dyslipidemia for prevention and treatment of cardiovascular disease.
Recent Findings: The American College of Cardiology/American Heart Association (ACC/AHA) and European Society of Cardiology/European Atherosclerosis Society (ESC/EAS) published revised cholesterol management guidelines in 2018 and 2019, respectively, to reflect new evidence in the field. Broadly speaking, both emphasize refining cardiovascular disease risk estimation and aggressively lowering low-density lipoprotein-cholesterol (LDL-C) with statin and non-statin agents to curb cardiovascular risk.
Background: Bariatric surgery reduces atherosclerotic cardiovascular disease (ASCVD) risk. However, the comparative effect of Roux-en-Y gastric bypass (RYGB) and sleeve gastrectomy (SG) on 10-year and lifetime ASCVD risk, as defined by the American College of Cardiology/American Heart Association (ACC/AHA), remains unknown.
Methods: Using the ACC/AHA ASCVD risk estimator, 10-year and lifetime ASCVD risks were calculated before and 1 year after bariatric surgery for patients aged 40-78 who underwent RYGB or SG at an academic medical center in California between 2003 and 2015.
Impact of race/ethnicity on insulin resistance and hypertriglyceridaemia.
Diab Vasc Dis Res
March 2019
Objective: Insulin sensitivity affects plasma triglyceride concentration and both differ by race/ethnicity. The purpose of this study was to provide a comprehensive assessment of the variation in insulin sensitivity and its relationship to hypertriglyceridaemia between five race/ethnic groups.
Research Design And Methods: In this cross-sectional study, clinical data for 1025 healthy non-Hispanic White, Hispanic White, East Asian, South Asian and African American individuals were analysed.
Surface ECG f Wave Analysis of Dofetilide Drug Effect in the Atrium.
J Cardiovasc Electrophysiol
June 2015
Introduction: The electrocardiogram (ECG) fibrillatory (f) wave characteristics in atrial fibrillation (AF) could provide important information regarding the efficacy of antiarrhythmic drug therapy.
Methods And Results: To measure the effects of dofetilide on the surface ECG f wave characteristics in patients with persistent AF, baseline and post-drug (2 hours after first dose and after multiple doses) ECGs in 31 patients with persistent AF admitted for dofetilide loading were evaluated. A QRST template subtraction algorithm was used to yield an atrial ECG.