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Timothy Anthony Johnson - Publications

Affiliations: 
Biomedical Engineering University of North Carolina, Chapel Hill, Chapel Hill, NC 
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30 high-probability publications. We are testing a new system for linking publications to authors. You can help! If you notice any inaccuracies, please sign in and mark papers as correct or incorrect matches. If you identify any major omissions or other inaccuracies in the publication list, please let us know.

Year Citation  Score
2007 Starobin JM, Cascio WE, Goldfarb AH, Varadarajan V, Starobin AJ, Danford CP, Johnson TA. Identifying coronary artery flow reduction and ischemia using quasistationary QT/RR-interval hysteresis measurements. Journal of Electrocardiology. 40: S91-6. PMID 17993337 DOI: 10.1016/J.Jelectrocard.2007.05.024  0.349
2005 Cascio WE, Yang H, Muller-Borer BJ, Johnson TA. Ischemia-induced arrhythmia: the role of connexins, gap junctions, and attendant changes in impulse propagation. Journal of Electrocardiology. 38: 55-9. PMID 16226075 DOI: 10.1016/J.Jelectrocard.2005.06.019  0.38
2004 Kim CS, Ufer S, Seagle CM, Engle CL, Troy Nagle H, Johnson TA, Cascio WE. Use of micromachined probes for the recording of cardiac electrograms in isolated heart tissues. Biosensors & Bioelectronics. 19: 1109-16. PMID 15018966 DOI: 10.1016/J.Bios.2003.10.011  0.316
2002 Marzouk SA, Buck RP, Dunlap LA, Johnson TA, Cascio WE. Measurement of extracellular pH, K(+), and lactate in ischemic heart. Analytical Biochemistry. 308: 52-60. PMID 12234463 DOI: 10.1016/S0003-2697(02)00220-8  0.366
2001 Cascio WE, Yang H, Johnson TA, Muller-Borer BJ, Lemasters JJ. Electrical properties and conduction in reperfused papillary muscle. Circulation Research. 89: 807-14. PMID 11679411 DOI: 10.1161/Hh2101.098612  0.317
2000 Barton CW, Cascio WE, Batson DN, Engle CL, Johnson TA. Effect of rates of perfusion on dominant frequency and defibrillation energy in isolated fibrillating hearts. Pacing and Clinical Electrophysiology : Pace. 23: 504-11. PMID 10793442 DOI: 10.1111/J.1540-8159.2000.Tb00835.X  0.317
1998 Hyatt CJ, Lemasters JJ, Muller-Borer BJ, Johnson TA, Cascio WE. A superfusion system to study border zones in confluent cultures of neonatal rat heart cells. American Journal of Physiology. Heart and Circulatory Physiology. 274: H2001-H2008. PMID 29585960 DOI: 10.1152/Ajpheart.1998.274.6.H2001  0.635
1998 Marzouk SA, Ufer S, Buck RP, Johnson TA, Dunlap LA, Cascio WE. Electrodeposited iridium oxide pH electrode for measurement of extracellular myocardial acidosis during acute ischemia. Analytical Chemistry. 70: 5054-61. PMID 9852787 DOI: 10.1021/Ac980608E  0.355
1996 Cosofret VV, Erdosy M, Raleigh JS, Johnson TA, Neuman MR, Buck RP. Aliphatic polyurethane as a matrix for pH sensors: effects of native sites and added proton carrier on electrical and potentiometric properties. Talanta. 43: 143-51. PMID 18966474 DOI: 10.1016/0039-9140(95)01724-0  0.324
1995 Cascio WE, Johnson TA, Gettes LS. Electrophysiologic changes in ischemic ventricular myocardium: I. Influence of ionic, metabolic, and energetic changes Journal of Cardiovascular Electrophysiology. 6: 1039-1062. PMID 8589873 DOI: 10.1111/J.1540-8167.1995.Tb00381.X  0.352
1995 Smith WT, Fleet WF, Johnson TA, Engle CL, Cascio WE. The Ib phase of ventricular arrhythmias in ischemic in situ porcine heart is related to changes in cell-to-cell electrical coupling. Experimental Cardiology Group, University of North Carolina. Circulation. 92: 3051-60. PMID 7586276 DOI: 10.1161/01.Cir.92.10.3051  0.313
1995 Cosofret VV, Erdösy M, Johnson TA, Buck RP, Ash RB, Neuman MR. Microfabricated sensor arrays sensitive to pH and K+ for ionic distribution measurements in the beating heart Analytical Chemistry. 67: 1647-1653. DOI: 10.1021/Ac00106A001  0.357
1995 Lindner E, Cosofret VV, Buck RP, Johnson TA, Ash RB, Neuman MR, Kao WJ, Anderson JM. Electroanalytical and biocompatibility studies on microfabricated array sensors Electroanalysis. 7: 864-870. DOI: 10.1002/Elan.1140070913  0.308
1995 Buck RP, Cosofret VV, Lindner E, Ufer S, Mudaras MB, Johnson TA, Ash RB, Neumun MR. Microfabrication technology of flexible membrane based sensors for in vivo applications Electroanalysis. 7: 846-851. DOI: 10.1002/Elan.1140070910  0.359
1994 Fleet WF, Johnson TA, Cascio WE, Shen J, Engle CL, Martin DG, Gettes LS. Marked activation delay caused by ischemia initiated after regional K+ elevation in in situ pig hearts. Circulation. 90: 3009-17. PMID 7994849 DOI: 10.1161/01.Cir.90.6.3009  0.322
1994 Cosofret VV, Erdösy M, Lindner E, Johnson TA, Buck RP, Kao WJ, Neuman MR, Anderson JM. Ion-selective microchemical sensors with reduced preconditioning time. membrane biostability studies and applications in blood analysis Analytical Letters. 27: 3039-3063. DOI: 10.1080/00032719408000310  0.319
1994 Cosofret VV, Lindner E, Johnson TA, Neuman MR. Planar micro sensors for in vivo myocardial pH measurements Talanta. 41: 931-938. DOI: 10.1016/0039-9140(94)E0106-2  0.372
1993 Harper JR, Johnson TA, Engle CL, Martin DG, Fleet W, Gettes LS. Effect of rate on changes in conduction velocity and extracellular potassium concentration during acute ischemia in the in situ pig heart. Journal of Cardiovascular Electrophysiology. 4: 661-71. PMID 8305986 DOI: 10.1111/J.1540-8167.1993.Tb01252.X  0.363
1991 Johnson TA, Engle CL, Boyd LM, Koch GG, Gwinn M, Gettes LS. Magnitude and time course of extracellular potassium inhomogeneities during acute ischemia in pigs: Effect of verapamil Circulation. 83: 622-634. PMID 1991380 DOI: 10.1161/01.Cir.83.2.622  0.362
1991 Gettes LS, Cascio WE, Johnson T, Fleet WF. Local Myocardial Biochemical and Ionic Alterations During Myocardial Ischaemia and Reperfusion Drugs. 42: 7-13. PMID 1718696 DOI: 10.2165/00003495-199100421-00004  0.345
1990 Johnson TA, Engle CL, Kusy RP, Knisley SB, Graebner CA, Gettes LS. Fabrication, evaluation, and use of extracellular K+ and H+ ion-selective electrodes American Journal of Physiology - Heart and Circulatory Physiology. 258: H1224-H1231. PMID 2331010 DOI: 10.1152/Ajpheart.1990.258.4.H1224  0.34
1989 Jenkins MG, Johnson TA, Engle C, Gettes LS. Metabolic protection by verapamil during graded coronary flow reduction independent of effect on baseline systolic function. Separation of mechanical and ionic markers of ischemia Circulation. 80: 1870-1877. PMID 2598443 DOI: 10.1161/01.Cir.80.6.1870  0.352
1989 Watanabe I, Johnson TA, Engle CL, Graebner C, Jenkins MG, Gettes LS. Effects of verapamil and propranolol on changes in extracellular K+, pH, and local activation during graded coronary flow in the pig. Circulation. 79: 939-47. PMID 2564324 DOI: 10.1161/01.Cir.79.4.939  0.391
1987 Cascio WE, Foster JR, Buchanan JW, Johnson TA, Gettes LS. Enhancement of procainamide-induced rate-dependent conduction slowing by elevated myocardial extracellular potassium concentration in vivo. Circulation. 76: 1380-7. PMID 3677360 DOI: 10.1161/01.Cir.76.6.1380  0.339
1987 Watanabe I, Johnson TA, Buchanan J, Engle CL, Gettes LS. Effect of graded coronary flow reduction on ionic, electrical, and mechanical indexes of ischemia in the pig. Circulation. 76: 1127-34. PMID 3664997 DOI: 10.1161/01.Cir.76.5.1127  0.368
1987 Johnson TA, Coronel R, Graebner CA, Buchanan JW, Janse MJ, Gettes LS. Relationship between extracellular potassium accumulation and local TQ-segment potential during acute myocardial ischemia in the porcine. Journal of Molecular and Cellular Cardiology. 19: 949-52. PMID 3437453 DOI: 10.1016/S0022-2828(87)80567-9  0.362
1987 GETTES L, JOHNSON T, CORONEL R, JANSE M. Relationship of changes in extracellular K+ to TQ potential in no flow and low flowischemia Journal of Molecular and Cellular Cardiology. 19: S26-S26. DOI: 10.1016/S0022-2828(87)80085-8  0.31
1986 Fleet WF, Johnson TA, Graebner CA, Engle CL, Gettes LS. Effects of verapamil on ischemia-induced changes in extracellular K+, pH, and local activation in the pig. Circulation. 73: 837-46. PMID 3948380 DOI: 10.1161/01.Cir.73.4.837  0.367
1986 Nichols TC, Bellinger DA, Johnson TA, Lamb MA, Griggs TR. Von Willebrand's disease prevents occlusive thrombosis in stenosed and injured porcine coronary arteries Circulation Research. 59: 15-26. PMID 3488139 DOI: 10.1161/01.Res.59.1.15  0.325
1985 Fleet WF, Johnson TA, Graebner CA, Gettes LS. Effect of serial brief ischemic episodes on extracellular K+, pH, and activation in the pig Circulation. 72: 922-932. PMID 4028385 DOI: 10.1161/01.Cir.72.4.922  0.386
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