J
Joseph A. Sivak
Researcher at Duke University
Publications - 19
Citations - 209
Joseph A. Sivak is an academic researcher from Duke University. The author has contributed to research in topics: Aortic valve & Aortic valve stenosis. The author has an hindex of 7, co-authored 18 publications receiving 141 citations. Previous affiliations of Joseph A. Sivak include University of North Carolina at Chapel Hill.
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Journal ArticleDOI
Prevalence and Outcomes of Left-Sided Valvular Heart Disease Associated With Chronic Kidney Disease.
Zainab Samad,Joseph A. Sivak,Matthew Phelan,Phillip J. Schulte,Uptal D. Patel,Eric J. Velazquez +5 more
TL;DR: Prevalence of at least mild AS and MR is substantially higher and is associated with significantly lower survival among patients with versus without CKD, with increasingly worse outcomes for CKD patients with increasing AS/MR severity.
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Assessment of the physiologic contribution of right atrial function to total right heart function in patients with and without pulmonary arterial hypertension.
TL;DR: RA function accounts for a significantly greater proportion of total right heart function in patients with PAH than in normal subjects.
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An Approach to Improve the Negative Predictive Value and Clinical Utility of Transthoracic Echocardiography in Suspected Native Valve Infective Endocarditis.
Joseph A. Sivak,Amit N. Vora,Amit N. Vora,Ann Marie Navar,Phillip J. Schulte,Anna Lisa Crowley,Joseph Kisslo,G. Ralph Corey,G. Ralph Corey,Lawrence Liao,Andrew Wang,Eric J. Velazquez,Eric J. Velazquez,Zainab Samad +13 more
TL;DR: The ability of TTE to exclude vegetation in patients is excellent when strict criteria for negative results are applied, and in patients at low to intermediate risk with strict negative results on TTE, follow-up TEE may be unnecessary.
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Grading Aortic Stenosis With Mean Gradient and Aortic Valve Area: A Comparison Between Preoperative Transthoracic and Precardiopulmonary Bypass Transesophageal Echocardiography
TL;DR: The hypothesis that pre-CPB TEE generates different PGm and AVA values compared with preoperative transthoracic values in the same patients was confirmed and these differences often underestimate AS severity.
Journal ArticleDOI
Use of outcome measures in pulmonary hypertension clinical trials.
Kishan S. Parikh,Sudarshan Rajagopal,Kristine Arges,Tariq Ahmad,Joseph A. Sivak,Prashant Kaul,Svati H. Shah,Victor F. Tapson,Eric J. Velazquez,Eric J. Velazquez,Pamela S. Douglas,Pamela S. Douglas,Zainab Samad +12 more
TL;DR: The use of these surrogate measures has evolved significantly over time with increasing use of patient-centered endpoints and decreasing or stable use of imaging and invasive measures in contemporary clinical practice as mentioned in this paper.