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V. Kheyfets’ research focuses on applying machine learning and computational modeling to study cardiopulmonary disease. He has over 20 years of experience in these fields, spanning both academic and industry settings. Over the past seven years, he has taught courses on machine learning, computational modeling, and bioinformatics at the University of Colorado. He has been invited to deliver talks at Stanford University, Yale University, and National Jewish Hospital, and to provide lectures on machine learning and algorithm development in industry (e.g., Garmin Ltd). He was also invited to deliver keynote addresses on patient-specific computational modeling at both the U.S. Congress of Computational Mechanics and the World Congress of Computational Mechanics.
List of Publications:
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Bean A, King J, Kheyfets V. Silicon Cloud Diffusion Studies in the D0 Monte Carlo. D0 Note 4468. 2004;
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Kheyfets VO, Kieweg SL. Derivation and numerical simulation of the free-surface spreading of an Ellis fluid for microbicide application. Journal of Non-Newtonian Fluid Mechanics 2013; 202:88-98 PMID: 25309029.
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Steinman DA, Hoi Y, Fahy P, Morris L, Walsh MT, Aristokleous N, Anayiotos AS, Papaharilaou Y, Arzani A, Shadden SC, Berg P, Janiga G, Bols J, Segers P, Bressloff NW, Cibis M, Gijsen FH, Cito S, Pallarés J, Browne LD, Costelloe JA, Lynch AG, Degroote J, Vierendeels J, Fu W, Qiao A, Hodis S, Kallmes DF, Kalsi H, Long Q, Kheyfets VO, Finol EA, Kono K, Malek AM, Lauric A, Menon PG, Pekkan K, Esmaily Moghadam M, Marsden AL, Oshima M, Katagiri K, Peiffer V, Mohamied Y, Sherwin SJ, Schaller J, Goubergrits L, Usera G, Mendina M, Valen-Sendstad K, Habets DF, Xiang J, Meng H, Yu Y, Karniadakis GE, Shaffer N, Loth F. Variability of computational fluid dynamics solutions for pressure and flow in a giant aneurysm: the ASME 2012 Summer Bioengineering Conference CFD Challenge. J Biomech Eng. 2013; 135(2):021016 PMID: 23445061.
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Kheyfets VO, Kieweg SL. Experimental and numerical models of three-dimensional gravity-driven flow of shear-thinning polymer solutions used in vaginal delivery of microbicides. J Biomech Eng. 2013;135(6):61009-14 PMID: 23699721.
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Kheyfets VO, O'Dell W, Smith T, Reilly JJ, Finol EA. Considerations for numerical modeling of the pulmonary circulation--a review with a focus on pulmonary hypertension. J Biomech Eng. 2013;135(6):61011-15 PMID: 23699723.
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Zhang H, Kheyfets VO, Finol EA. Robust infrarenal aortic aneurysm lumen centerline detection for rupture status classification. Med Eng Phys. 2013; 35(9):1358-67 PMID: 23608300.
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Kheyfets VO, Thornton RC, Kowal M, Finol EA. A protocol for measuring pull-off stress of wound-treatment polymers. J Biomech Eng. 201; 136(7) PMID: 24718322.
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Kheyfets VO, Thirugnanasambandam M, Rios L, Evans D, Smith T, Schroeder T, Mueller J, Murali S, Lasorda D, Spotti J, Finol E. The role of wall shear stress in the assessment of right ventricle hydraulic workload. Pulm Circ. 2015; 5(1):90-100 PMID: 25992274.
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Kheyfets VO, Rios L, Smith T, Schroeder T, Mueller J, Murali S, Lasorda D, Zikos A, Spotti J, Reilly JJ Jr, Finol EA. Patient-specific computational modeling of blood flow in the pulmonary arterial circulation. Comput Methods Programs Biomed. 2015; 120(2):88-101 PMID: 25975872.
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Truong U, Patel S, Kheyfets VO, Dunning J, Fonseca B, Barker AJ, Ivy D, Shandas R, Hunter K. Non-invasive determination by cardiovascular magnetic resonance of right ventricular-vascular coupling in children and adolescents with pulmonary hypertension. J Cardiovasc Magn Reson. 2015; 17:81 PMID: 26376972.
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Kheyfets VO, Dunning J, Truong U, Ivy DD, Hunter KA, Shandas R. Assessment of N-terminal prohormone B-type natriuretic peptide as a measure of vascular and ventricular function in pediatric pulmonary arterial hypertension. Pulm Circ. 2015; 5(4):658-66 PMID: 26697173.
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Schäfer M, Browning J, Schroeder JD, Shandas R, Kheyfets VO, Buckner JK, Hunter KS, Hertzberg JR, Fenster BE. Vorticity is a marker of diastolic ventricular interdependency in pulmonary hypertension. Pulm Circ. 2016; 6(1):46-54 PMID: 27162613.
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Schäfer M, Kheyfets VO, Schroeder JD, Dunning J, Shandas R, Buckner JK, Browning J, Hertzberg J, Hunter KS, Fenster BE. Main pulmonary arterial wall shear stress correlates with invasive hemodynamics and stiffness in pulmonary hypertension. Pulm Circ. 2016; 6(1):37-45 PMID: 27076906.
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Kheyfets VO, Schafer M, Podgorski CA, Schroeder JD, Browning J, Hertzberg J, Buckner JK, Hunter KS, Shandas R, Fenster BE. 4D magnetic resonance flow imaging for estimating pulmonary vascular resistance in pulmonary hypertension. J Magn Reson Imaging. 2016; 44(4):914-22 PMID: 27173445.
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Kheyfets VO, Dunning J, Truong U, Ivy D, Hunter K, Shandas R. A Zero-Dimensional Model and Protocol for Simulating Patient-Specific Pulmonary Hemodynamics From Limited Clinical Data. J Biomech Eng. 2016; 138(12) PMID: 27684888.
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Schäfer M, Ivy DD, Abman SH, Barker AJ, Browne LP, Fonseca B, Kheyfets VO, Hunter KS, Truong U. Apparent Aortic Stiffness in Children With Pulmonary Arterial Hypertension: Existence of Vascular Interdependency? Circ Cardiovasc Imaging 2017; 10(2) PMID: 28193613.
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Schäfer M, Ivy DD, Barker AJ, Kheyfets VO, Shandas R, Abman SH, Hunter KS, Truong U. Characterization of CMR-derived haemodynamic data in children with pulmonary arterial hypertension. Eur Heart J Cardiovasc Imaging. 2017;18(4):424-431 PMID: 27444679.
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Kheyfets VO, Sucharov CC, Truong U, Dunning J, Hunter K, Ivy D, Miyamoto S, Shandas R. Circulating miRNAs in Pediatric Pulmonary Hypertension Show Promise as Biomarkers of Vascular Function. Oxid Med Cell Longev. 2017; 4957147 PMID: 28819545.
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Schäfer M, Barker AJ, Kheyfets VO, Stenmark KR, Crapo J, Yeager ME, Truong U, Buckner JK, Fenster BE, Hunter KS. Helicity and Vorticity of Pulmonary Arterial Flow in Patients With Pulmonary Hypertension: Quantitative Analysis of Flow Formations. J Am Heart Assoc. 2017; 6(12) PMID: 29263034.
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Schäfer M, Truong U, Browne LP, Morgan GJ, Ross M, Ing R, Hunter KS, Kheyfets VO, Abman SH, Ivy DD, Wilson N. Measuring Flow Hemodynamic Indices and Oxygen Consumption in Children with Pulmonary Hypertension: A Comparison of Catheterization and Phase-Contrast MRI. Pediatr Cardiol. 2018; 39(2):268-274 PMID: 29043395.
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Schäfer M, Humphries S, Stenmark KR, Kheyfets VO, Buckner JK, Hunter KS, Fenster BE. 4D-flow cardiac magnetic resonance-derived vorticity is sensitive marker of left ventricular diastolic dysfunction in patients with mild-to-moderate chronic obstructive pulmonary disease. Eur Heart J Cardiovasc Imaging. 2018;19(4):415-424 PMID: 28460004.
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Kong F, Kheyfets VO, Finol E, Cai XC. An efficient parallel simulation of unsteady blood flows in patient-specific pulmonary artery. Int J Numer Method Biomed Eng. 2018; 34(4):e2952 PMID: 29245182.
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Schäfer M, Kheyfets VO, Barker AJ, Stenmark K, Hunter KS, McClatchey PM, Buckner JK, Reece TB, Jazaeri O, Fenster BE. Reduced shear stress and associated aortic deformation in the thoracic aorta of patients with chronic obstructive pulmonary disease. J Vasc Surg. 2018; 68(1):246-253. PMID: 28986100.
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Dufva MJ, Truong U, Tiwari P, Ivy DD, Shandas R, Kheyfets VO. Left ventricular torsion rate and the relation to right ventricular function in pediatric pulmonary arterial hypertension. Pulm Circ. 2018; 8(3):2045894018791352 PMID: 30003835.
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Bordones AD, Leroux M, Kheyfets VO, Wu YA, Chen CY, Finol EA. Computational Fluid Dynamics Modeling of the Human Pulmonary Arteries with Experimental Validation. Ann Biomed Eng. 2018; 46(9):1309-1324 PMID: 29786774.
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Kheyfets VO, Truong U, Ivy D, Shandas R. Structural and Biomechanical Adaptations of Right Ventricular Remodeling - in Pulmonary Arterial Hypertension - Reduces Left Ventricular Rotation During Contraction: A Computational Study. J Biomech Eng. 2019; 141(5):05100210 PMID: 30714069.
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Schäfer M, Ivy DD, Abman SH, Stenmark K, Browne LP, Barker AJ, Mitchell MB, Morgan GJ, Wilson N, Shah A, Kollengode M, Naresh N, Fonseca B, DiMaria M, Buckner JK, Hunter KS, Kheyfets VO, Fenster BE, Truong U. Differences in pulmonary arterial flow hemodynamics between children and adults with pulmonary arterial hypertension as assessed by 4D-flow CMR studies. Am J Physiol Heart Circ Physiol. 2019;316(5):H1091-H1104 PMID: 30822118.
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Kong F, Kheyfets VO, Finol E, Cai XC. Simulation of unsteady blood flows in a patient-specific compliant pulmonary artery with a highly parallel monolithically coupled fluid-structure interaction algorithm. Int J Numer Method Biomed Eng. 2019;35(7):e3208 PMID: 30989794.
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Breeman KTN, Dufva M, Ploegstra MJ, Kheyfets VO, Willems TP, Wigger J, Hunter KS, Ivy DD, Berger RMF, Truong U. Right ventricular-vascular coupling ratio in pediatric pulmonary arterial hypertension: A comparison between cardiac magnetic resonance and right heart catheterization measurements. Int J Cardiol. 2019; 293:211-217 PMID: 31109778.
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Heerdt PM, Kheyfets VO, Charania S, Elassal A, Singh I. A pressure-based single beat method for estimation of right ventricular ejection fraction: proof of concept. Eur Respir J. 2020; 55(3) PMID: 31771999.
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Kheyfets VO, Dufva MJ, Boehm M, Tian X, Qin X, Tabakh JE, Truong U, Ivy D, Spiekerkoetter E. The left ventricle undergoes biomechanical and gene expression changes in response to increased right ventricular pressure overload. Physiol Rep. 2020; 8(9):e14347 PMID: 32367677.
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Kopf KW, Harral JW, Staker EA, Summers ME, Petrache I, Kheyfets VO, Irwin DC, Majka SM. Optimization of combined measures of airway physiology and cardiovascular hemodynamics in mice. Pulm Circ. 2020;10(1):2045894020912937. PMID: 32206308.
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Kheyfets VO, Lammers SR, Wagner J, Bartels K, Piccoli J, Smith BJ. PEEP/ FIO2 ARDSNet Scale Grouping of a Single Ventilator for Two Patients: Modeling Tidal Volume Response. Respir Care. 2020;65(8):1094-1103. doi: 10.4187/respcare.07931. PMID: 32712582.
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Boehm M, Tian X, Mao Y, Ichimura K, Dufva MJ, Ali K, Dannewitz Prosseda S, Shi Y, Kuramoto K, Reddy S, Kheyfets VO, Metzger RJ, Spiekerkoetter E. Delineating the molecular and histological events that govern right ventricular recovery using a novel mouse model of pulmonary artery de-banding. Cardiovasc Res. 2020; 116(10) 1700-1709. PMID: 31738411.
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Schaffer M, Frank BS, Ivy DD, Abman SH, Stenmark KS, Mitchell MB, Browne LP, Barker AJ, Hunter KS, Kheyfets VO, Miller-Reed K, Ing R, Morgan GJ, Truong U. Short-Term Effects of Inhaled Nitric Oxide on Right Ventricular Flow Hemodynamics by 4-Dimensionsal-Flow Magnetic Resonance Imaging in Children with Pulmonary Arterial Hypertension. J Am Heart Assoc. 2021; 10(8):e020548. PMID: 33821682.
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Stroh NJ, Bennet TD, Kheyfets VO, Albers D. Clinical Decision Support for Traumatic Brain Injury: Identifying a Framework for Practical Model-Based Intracranial Pressure Estimation at Milthour Timescales. JMIR Med Inform. 2021; 9(3):e23215. PMID: 33749613.
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Dufva MJ*, Boehm M*, Ichimura K, Truong U, Qin X, Tabakh J, Hunter K, Ivy D, Spiekerkoetter E*, Kheyfets VO*. Pulmonary arterial banding in mice may be a suitable model for studies on ventricular mechanics in pediatric pulmonary arterial hypertension. Journal of Cardiovascular Magnetic Resonance. 2021; 23(1):66. PMID: 34078382.
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Boehm M, Tian X, Ali MK, Mao Y, Ichimura K, Zhao M, Kuramoto K, Dannewitz PS, Fajardo G, Dufva MJ, Qin X, Kheyfets VO, Bernstein D, Reddy S, Metzger RJ, Zamanian RT, Haddad F, Spiekerkoetter E. Improving Right Ventricular Function by Increasing BMP Signaling with FK506. American Journal of Respiratory and Cell Molecular Biology. 2021; 65(3):272-287. PMID: 33938785.
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Dufva MJ, Douwes JM, Ivy DD, Kheyfets VO, Hunter K. Ventricular-vascular coupling is predictive of adverse clinical outcome in pediatric pulmonary arterial hypertension. Open Heart. 2021; 8(2). PMID: 34583983.
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Walter R, Hunter K, Stenmark K, Kheyfets VO. Hemodynamically Unloading the Distal Pulmonary Circulation in Pulmonary Hypertension – A Modeling Study. ASME Journal of Biomechanical Engineering. 2022; 144(2). PMID: 34251418.
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Mickael C, Kheyfets VO, Langouet-Astrie C, Lee MH, Sanders LA, Trentin CO, Stenmark K, Bull T, Graham BB, Tuder RM. Peripheral Blood Inflammation Profile of Patients with Pulmonary Arterial Hypertension using the High Throughput Olink® Proteomic platform. American Journal of Respiratory and Cell Molecular Biology. 2022; 66(5):580-581. PMID: 35486078.
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Heerdt PM, Singh I, Elassal A, Kheyfets VO, Richter MJ, Tello K. Pressure-based estimation of right ventricular ejection fraction. ESC Heart Failure. 2022; 9(2):1436-1443. PMID: 35150211.
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Campbell NV, Mickael C, Kumar S, Zhang H, Campbell IL, Gillen AE, Trentin CO, Giener K, Gao B, Kheyfets VO, Gu S, Kumar R, Phang T, Brown RD, Graham BB, Stenmark KR. Single Cell RNA Sequencing and Binary Hierarchical Clustering Defined Lung Interstitial Macrophage Heterogeneity in Response to Hypoxia. Am J Physiol. 2022; Ahead of Print - PMID: 35608266.
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McConnell BV, Kronberg E, Medenblik LM, Kheyfets VO, Ramos AR, Sillau SH, Pulver RL, Bettcher BM. The Rise and Fall of Slow Wave Tides: Vacillations in Coupled Slow Wave/Spindle Pairing Shift the Composition of Slow Wave Activity in Accordance With Depth of Sleep. Front. Neurosci. 2022; 16:915934. PMID: 35812239
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Javadi E., Laudenschlager S, DiMaria M, Stone M, Jamali S, Powell AJ, Kheyfets VO, Moghari MH. Predicting Hemodynamic Performance of Fontan Operation for Glenn Physiology using Computational Fluid Dynamics: Ten Patient-specific Cases. J of Clinical Imaging and Medical Case Reports. 2022; 3(6):1916. ISSN 2766-7820.
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V.O. Kheyfets, A.J. Sweatt, M. Gomberg-Maitland, D.D. Ivy, R. Condliffe, D.G. Kiely, A. Lawrie, B.A. Maron, R.T. Zamanian, K. Stenmark. Computational Platform for Doctor-AI Cooperation in PAH Prognostication. European Respiratory Journal Open Research. 2023; 9(1):00484-2022.
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S. Gu, K. Goel, L. M. Forbes, V.O. Kheyfets, Y. A. Yu, R. M. Tuder, K. R. Stenmark. Tensions in Taxonomies: Current Understanding and Future Directions in the Pathobiological Basis and Treatment of Group 1 and Group 3 Pulmonary Hypertension. Comprehensive Physiology. 2023; 13(1):4295-4319.
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C. Hu, A. Laux, A. Gandjeva, L. Wang, M. Li, D. Brown, S. Riddle, V.O. Kheyfets, R. M. Tuder, H. Zhang, K. R. Stenmark. The Effect of HIF Inhibition on the Phenotype of Fibroblasts in Human and Bovine Pulmonary Hypertension. American Journal of Respiratory Cell and Molecular Biology. 2023 07; 69(1):73-86.
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R. D. Brown, K. S. Hunter, M. Li, M. G. Frid, J. Harral, G. M. Krasfur, T. N. Holt, J. Williams, H. Zhang, S. R. Riddle, M. G. Edwards, S. Kumar, C. H. Hu, B. B. Graham, L. A. Walker, F. B. Garry, P. M. Buttrick, T. Lahm, V. O. Kheyfets, K. C. Hanses, K. R. Stenmark. Functional and Molecular Determinants of Right Ventricular Response to Severe Pulmonary Hypertension in a Large Animal Model. Am J Physiol Heart Circ Physiol. 2023 06 01; 324(6):H804-H820. PMID: 36961489.
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K. Ichimura, E. Santana, T. Kouznetsova, N. Cauwenberghs, F. Sabovcik, L. Chun, N. Francisco, V.O. Kheyfets, M. Salerno, R. Zamanian, E. F. Spiekerkoetter, F. Haddad. Novel left ventricular mechanical index in pulmonary arterial hypertension. Pulm Circ. 2023 Apr; 13(2):e12216.
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V.O. Kheyfets, S. Kumar, P.M. Heerdt, K. Ichimura, R.D. Brown, M. Lucero, I. Essafri, S. Williams, K.R. Stenmark, E. Spiekerkoetter. Characterizing the Sptiotemporal Transcriptomic Response of the Right Ventricle to Acute Pressure Overload. Int J Mol Sci. 2023 Jun 05; 24(11).
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Pulver R.L., Kronberg E., Medenblik L.M., Kheyfets V.O., Ramos A.R., Holtzman D.M., Morris J.C., Toedebusch C.D., Sillau S.H., Bettcher B.M., Lucey B.P., McConnell B.V. Mapping sleep's oscillatory events as a biomarker of Alzheimer's disease. Alzheimers Dement. 2024 Jan; 20(1):301-315.
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Ichimura K., Boehm M., Andruska A., Zhang F., Shimmel K., Mai Y., Zhang T., Bonham S., Kabiri A., Kheyfets V.O., Reddy S., Wang G., Santana E., Tian X., Essafri I., Vinh R., Tian W., Nicolls M., Yajima S., Shudo Y., MacArthur J., Woo J., Metzger R., Spiekerkoetter E. 3D imaging reveals complex microvascular remodeling in the right ventricle in pulmonary hypertension. Circulation Research 2024; Jun; 135(1):60-75.
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Tuder R.M., Gandjeva A., Williams S., Kumar S., Kheyfets V.O., Hatton-Jones K.M., Starr J.R., Yun J., Huang J., West N.P., Stenmark K.R. Molecular profiling of pulmonary vascular lesions in idiopathic pulmonary arterial hypertension. American Journal of Respiratory and Critical Care Medicine; 2024 Aug; 210(3):329-342.
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Heerdt P.M., Kheyfets V.O., Oakland H.T., Joseph P., Singh I. Right Ventricular Pressure Waveform Analysis-Clinical Relevance and Future Directions. Journal of Cardiothoracic Vascular Anesthesia; 2024 Jun; S1053-0770(24)00395-1.
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Laudenschlager S, Schofield S, Drysdale N, Stone M, Romanowicz J, Frank B, DiMaria M, Kheyfets VO, Hedjazi-Moghari M. Estimation of pulmonary vascular resistance for Glenn physiology. PLoS One. 2024 Jul;19(7):e0307890.
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Pre-Print:
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Brice V McConnell, Yaning Liu, Ashis K Biswas, Brianne M. Bettcher, Lindsey M. Medenblik, Josiane L Broussard, Brendan P. Lucey, Alberto R. Ramos, Kheyfets VO. On Monitoring Brain Health from the Depths of Sleep: Feature Engineering and Machine Learning Insights for Digital Biomarker Development. bioRxiv 2024.02.27.581950; doi: https://doi.org/10.1101/2024.02.27.581950
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V.O. Kheyfets, A.J. Sweatt, H. Zhang, T. Nemkov, M. Aizin, P. Heerdt, M. Dzieciatkowska, D. Stephenson, I.S. LaCroix, A. D’Alessandro, W. M. Oldham, K.C. Hansen, R.T. Zamanian, K.R. Stenmark. Identification of candidate biomarkers and molecular networks associated with Pulmonary Arterial Hypertension using machine learning and plasma multi-Omics analysis. medRXiv. doi: https://doi.org/10.1101/2024.12.17.24319117