Dr. Fritz Claydon joined the UH faculty in August, 1999 after spending 12 years at the University of Memphis. Over the past five years Dr. Claydon's educational interests have revolved around programs to stimulate freshman engineering students. For the past 15 years, Dr. Claydon's research interests have centered around cardiac mapping and mechanisms of defibrillation.

-• Degrees

– Texas A&M University, College Station B.S. in Bioengineering, 1982
– Duke University, Durham, NC M.S. in Biomedical Engineering, 1984
– Duke University, Durham, NC Ph.D. in Biomedical Engineering, 1987

-• Experience

1999 - Present	Professor and Chair of Electrical and Computer Engineering, University of Houston
1998 - 1999	ECI Professor of Biomedical and Electrical Engineering, The University of Memphis
1994 - 1998	Associate Professor of Biomedical Engineering, The University of Memphis
1992 - 1998	Associate Professor of Electrical Engineering, The University of Memphis
1991 - 1999	Associate Dean, Herff College of Engineering, The University of Memphis
1988 - 1999	Adjunct Professor of Biomedical Engineering, University of Tennessee, Memphis
1987 - 1992	Assistant Professor of Electrical Engineering, The University of Memphis.

 
-• Research

» Grant Support
The following are grants which have been funded with Dr. Claydon as the Principal Investigator:

• National Science Foundation, "Research Experiences for Undergraduates in Bioengineering",
     9/1/98 to 3/31/00, $120,000.
• Cardiac Pacemakers Inc. "Defibrillation Efficacy",
     4/1/97 to 3/31/99, $91,978.
• American Heart Association, Grant-In-Aid, "Optimizing Defibrillation Efficacy Utilizing a Computer Model of the Human Torso", 7/1/95 to 12/31/97, $50,000.
• NIH Small Instrumentation Grant, 8/1/94 to 7/31/95, $19,030.
• Whitaker Foundation, Biomedical Research Grants Program, "Intracavitary Mapping: Models and Experiments", 8/1/93 to 7/31/96, $180,000.
• American Heart Association, Grant-In-Aid, "Intracavitary Mapping:Models and Experiments",
     7/1/93 to 6/30/95, $50,000.
• NIH Small Instrumentation Grant, 9/1/92 to 8/31/93, $17,540.
• National Science Foundation - Duke University Engineering Research Center,  "A Study of Current Pathways During Transthoracic Defibrillation",   5/1/92 to 7/1/92, $11,607.
• NIH-AREA Program, "Intracavitary Mapping: Models and Experiments",
     7/15/91 to 6/30/94,$98,296.
• National Science Foundation - Duke University Engineering Research Center, "Examining the Fraction of Intrathoracic Current that Enters the Heart During Transthoracic Defibrillation",  5/15/91 to 4/30/92, $16,018.
• American Heart Association, "Electrocardiographic Predictors of Ventricular Arrhythmias",
     7/1/89 to 6/30/91, $55,000.
  

• National Science Foundation, "Research Experiences for Undergraduates in Bioengineering",
     4/1/97 to 8/31/98, $180,000, Co-PI with Richard Warder.
• Whitaker Foundation Special Opportunities Award, "The Memphis Collaboration for Biomedical Engineering", 8/1/95 to 12/31/98, $750,000, Eugene Eckstein: Principal Investigator.
• VA Merit Review, "Clinical & Experimental Electrophysiology", 10/1/91 to 9/30/94, $120,000,
     David Mirvis: Principal Investigator.
• NIH-BRSG Program, "Electrocardiographic Correlates of Myocardial Ischemia", 7/1/89 to 6/30/91,
     $54,665, David Mirvis: Principal Investigator.

 
-• Publications

Entcheva E, Trayanova N, and Claydon FJ: Patterns of and mechanisms for shock-induced polarization in the heart: A bidomain analysis. IEEE Transactions on Biomedical Engineering. 46:260-270, 1999.

de Jongh AL, Entcheva E, Replogle J, Booker R, KenKnight B, Claydon FJ: Defibrillation efficacy of different electrode placements in a human thorax model. PACE 22-II:152-157, 1999.

Huang Q, Eason J, and Claydon FJ: Membrane polarization induced in the myocardium by defibrillation fields: Anidealized 3D finite element bidomain/monodomain torso model. IEEE Transactions on Biomedical Engineering 46:26-34, 1999.

deJongh A, Claydon FJ, Entcheva E, Replogle J, Booker R, KenKnight K: Locating weak potential gradient fields during transvenous defibrillation in a human thorax model. PACE 21:911, 1998.

Entcheva E, Trayanova N, Claydon FJ: Uniform electric field can induce virtual electrodes through cardiac fiber curvature. PACE 21:961, 1998.

Entcheva E, Eason J, Efimov I, Cheng Y, Malkin R, and Claydon FJ: Virtual electrode efffects in transvenous defibrillation - modulation by structure and interface: Evidence from bidomain simulations and optical mapping. Journal of Cardiovascular Electrophysiology 9:949-961, 1998.

Replogle J, Russomano D, deJongh AL, and Claydon FJ: Extracting isovolumes from three-dimensional torsogeometry using PROLOG. IEEE Transactions on Information Technology in Biomedicine 2:10-19, 1998.

Replogle J, deJongh AL, Russomano D, and Claydon FJ: Defining a volume threshold value with PROLOG. IEEE Computers in Cardiology 25:33-36, 1997.

deJongh AL, Entcheva E, Replogle J, and Claydon FJ: Effects of cardiac anisotropy on modeling transvenous defibrillation in the human thorax. IEEE Computers in Cardiology 25:239-242, 1997.

Entcheva E, Eason J, Claydon FJ, and Malkin R: Spatial effects from bipolar current injection in 3D myocardium: implications for conductivity measurements. IEEE Computers in Cardiology 25:717-720, 1997.

deJongh AL, Entcheva E, Replogle J, and Claydon FJ: Determining the level of complexity require to model transvenous defibrillation fields. Proceedings 19th Annual Conference IEEE Engineering in Medicine and Biology Society, Chicago, Illinois, Nov. 1997.

Entcheva E, Huang Q, deJongh A, Replogle J, and Claydon FJ: Simple classification technique for 3D highly heterogeneous domains and its applications in defibrillation modeling. Proceedings 19th Annual Conference IEEE Engineering in Medicine and Biology Society, Chicago, Illinois, Nov. 1997.

Huang Q and Claydon FJ: A comparison of bidomain and monodomain models in calculating the cardiac extracellular potentials induced by an external Field. IEEE Computers in Cardiology 24:225-228, 1996.

deJongh AL and Claydon FJ: Using intracavitary potentials to spatially map left-ventricular endocardial activation sequences before and after coronary occlusion. Circulation 90(IV):179, 1994.

Mayfield DF and Claydon FJ: Examining the effects of geometric uncertainty on the computation of endocardial potentials from measured intracavitary potentials. Proceedings 16th Annual Conference IEEE Engineering in Medicine and Biology Society, Baltimore, MD, Nov. 1994,
*(finalist in student paper competition).

deJongh AL and Claydon FJ, Mirvis DM: Examining the effects of uncertainty in intracavitary probe data on derived endocardial activation sequences. Circulation 92(IV):383, 1995.

deJongh AL, and Claydon FJ: Reducing mesh size for finite element modeling of transvenous defibrillation. Proceedings 18th Annual Conference IEEE Engineering in Medicine and Biology Society, Amsterdam, Netherlands, Nov. 1996.

Huang Q and Claydon FJ: Transmembrane potential distribution in a spherical heart during field stimulation: A 3Dfinite element bidomain model. Proceedings 18th Annual Conference IEEE Engineering in Medicine and Biology Society, Amsterdam, Netherlands, Nov. 1996.

Huang Q and Claydon FJ: Transmembrane potential distribution in a spherical heart during field stimulation: A 3Dfinite element bidomain model. Proceedings 18th Annual Conference IEEE Engineering in Medicine and Biology Society, Amsterdam, Netherlands, Nov. 1996.

Huang Q and Claydon FJ: Transmembrane potential distribution in a spherical heart during field stimulation: A 3Dfinite element bidomain model. Proceedings 18th Annual Conference IEEE Engineering in Medicine and Biology Society, Amsterdam, Netherlands, Nov. 1996.

Entcheva E and Claydon FJ: A discrete model of the dynamic behavior of the cardiac muscle. IEEE Computers in Cardiology 24:609-612, 1996.