Helfant, Richard H. : rechercher sur Z-Library

Le plus grand référentiel d'articles scientifiques au monde. 70,000,000+ d'articles gratuitement.

Don't use scam websites

Livres
Articles (130)
Les plus populaires
Liste
- Liste
- Tableau

1

Fascinating rhythm: A primer on chaos theory and its application to cardiology

Timothy A. Denton, George A. Diamond, Richard H. Helfant, Steven Khan, Hrayr Karagueuzian

Journal:

American Heart Journal

Année:

1990

Langue:

english

Fichier:

PDF, 3.60 MB

english, 1990

2

Functional Importance of the Human Coronary Collateral Circulation

Helfant, Richard H., Vokonas, Pantel, S., Gorlin, Richard

Journal:

Boston Medical and Surgical Journal

Année:

1971

Langue:

english

Fichier:

PDF, 779 KB

english, 1971

3

Evaluation of left ventricular performance in coronary heart disease: Use of isometric handgrip stress test

Richard H. Helfant, Maria A. Devilla, Vidya S. Banka

Journal:

Catheterization and Cardiovascular Interventions

Année:

1976

Langue:

english

Fichier:

PDF, 486 KB

english, 1976

4

Multistage analysis of exercise radionuclide angiography in coronary artery disease

Ricky M. Schneider, William S. Weintraub, Lloyd W. Klein, Paul A. Seelaus, Robert I. Katz, Jai B. Agarwal, Richard H. Helfant

Journal:

The American Journal of Cardiology

Année:

1986

Langue:

english

Fichier:

PDF, 675 KB

english, 1986

5

Prognostic significance of severe narrowing of the proximal portion of the left anterior descending coronary artery

Lloyd W. Klein, William S. Weintraub, Jai B. Agarwal, Ricky M. Schneider, Paul A. Seelaus, Robert I. Katz, Richard H. Helfant

Journal:

The American Journal of Cardiology

Année:

1986

Langue:

english

Fichier:

PDF, 633 KB

english, 1986

6

Factors affecting exercise left ventricular performance in patients free of obstructive coronary artery disease

Abdulmassih S. Iskandrian, Jaekyeong Heo, Alan Askenase, Richard H. Helfant, Bernard L. Segal

Journal:

The American Journal of Cardiology

Année:

1987

Langue:

english

Fichier:

PDF, 545 KB

english, 1987

7

Prognosis of symptomatic coronary artery disease in young adults aged 40 years or less

Lloyd W. Klein, Jai B. Agarwal, Michael B. Herlich, Therese M. Leary, Richard H. Helfant

Journal:

The American Journal of Cardiology

Année:

1987

Langue:

english

Fichier:

PDF, 522 KB

english, 1987

8

An optimal electrocardiographs lead system for post-cardiac surgical monitoring

Jonathan Gomberg, Patricia Sisk, Grant Van S. Parr, Richard H. Helfant

Journal:

The American Journal of Cardiology

Année:

1987

Langue:

english

Fichier:

PDF, 250 KB

english, 1987

9

Detection and localization of tumor necrosis factor in human atheroma

Peter Barath, Michael C. Fishbein, Jin Cao, James Berenson, Richard H. Helfant, James S. Forrester

Journal:

The American Journal of Cardiology

Année:

1990

Langue:

english

Fichier:

PDF, 9.50 MB

english, 1990

10

Short- and long-term mechanisms of sudden cardiac death in congestive heart failure

Richard H. Helfant

Journal:

The American Journal of Cardiology

Année:

1990

Langue:

english

Fichier:

PDF, 292 KB

english, 1990

11

The Q-wave and non-Q wave myocardial infarction: Differences and similarities

Lloyd W. Klein, Richard H. Helfant

Journal:

Progress in Cardiovascular Diseases

Année:

1986

Langue:

english

Fichier:

PDF, 1.63 MB

english, 1986

12

The clinical use of diphenylhydantoin (Dilantin) in the treatment and prevention of cardiac arrhythmias

Richard H. Helfant, George W. Seuffert, Robert D. Patton, Emanuel Stein, Anthony N. Damato

Journal:

American Heart Journal

Année:

1969

Langue:

english

Fichier:

PDF, 2.30 MB

english, 1969

13

Effect of diphenylhydantoin on acetyl strophanthidin

Benjamin J. Scherlag, Richard H. Helfant

Journal:

American Heart Journal

Année:

1971

Langue:

english

Fichier:

PDF, 105 KB

english, 1971

14

Effects of isolated interventricular septal ischemia on global and segmental function of the canine right and left ventricle

Jai B Agarwal, Hajime Yamazaki, Monty M Bodenheimer, Vidya S Banka, Richard H Helfant

Journal:

American Heart Journal

Année:

1981

Langue:

english

Fichier:

PDF, 891 KB

english, 1981

15

Inpatient treatment of unstable angina: Clinical perspective and sequential management

Richard H Helfant

Journal:

American Heart Journal

Année:

1982

Langue:

english

Fichier:

PDF, 534 KB

english, 1982

16

Contrasting effects of nifedipine and verapamil on myocardium and vascular smooth muscle at two levels of coronary occlusion in the dog

William S. Weintraub, Shigehiko Hattori, Jai B. Agarwal, Monty M. Bodenheimer, Vidya S. Banka, Richard H. Helfant

Journal:

American Heart Journal

Année:

1983

Langue:

english

Fichier:

PDF, 690 KB

english, 1983

17

Variable effects of intracoronary nitroglycerin on myocardial blood flow and segmental shortening according to dose and degree of coronary occlusion

William S. Weintraub, Satoshi Akizuki, Jai B. Agarwal, Monty M. Bodenheimer, Vidya S. Banka, Richard H. Helfant

Journal:

American Heart Journal

Année:

1984

Langue:

english

Fichier:

PDF, 463 KB

english, 1984

18

Contrasting incidence, inducibility, and transmural sites of origin of ventricular arrhythmias during acute coronary occlusion and reperfusion

Jai B Agarwal, Satoshi Akizuki, William S Weintraub, Richard H Helfant

Journal:

American Heart Journal

Année:

1984

Langue:

english

Fichier:

PDF, 615 KB

english, 1984

19

Quantitative thallium-201 imaging: Limitations in detecting pathophysiologically significant obstructive coronary artery disease

Samuel W. Madeira Jr., Monty M. Bodenheimer, Vidya S. Banka, Jai B. Agarwal, William S. Weintraub, Richard H. Helfant

Journal:

American Heart Journal

Année:

1984

Langue:

english

Fichier:

PDF, 927 KB

english, 1984

20

A sequential approach to the diagnosis of coronary artery disease using multivariate analysis

William S. Weintraub, Vivian A. Barr-Alderfer, Paul A. Seelaus, Monty M. Bodenheimer, Samuel W. Madeira Jr., Robert I. Katz, Michael S. Feldman, Jai B. Agarwal, Vidya S. Banka, Richard H. Helfant

Journal:

American Heart Journal

Année:

1985

Langue:

english

Fichier:

PDF, 772 KB

english, 1985

21

Prospective evaluation of the severity of coronary artery disease with exercise radionuclide angiography and electrocardiography

William S. Weintraub, Ricky M. Schneider, Paul A. Seelaus, David H. Wiener, Jai B. Agarwal, Richard H. Helfant

Journal:

American Heart Journal

Année:

1986

Langue:

english

Fichier:

PDF, 621 KB

english, 1986

22

Digital ventriculographic demonstration of ventricular septal defect after myocardial infarction

Lloyd W Klein, Frederick M Weinberg, Jai B Agarwal, Richard H Helfant

Journal:

American Heart Journal

Année:

1986

Langue:

english

Fichier:

PDF, 701 KB

english, 1986

23

The significance of underlying coronary stenosis for recovery of myocardial function after transient ischemia in the dog

Makoto Akaishi, William S. Weintraub, Richard J. Mercier, Jai B. Agarwal, Ricky M. Schneider, Richard H. Helfant

Journal:

American Heart Journal

Année:

1986

Langue:

english

Fichier:

PDF, 660 KB

english, 1986

24

Assessment of coronary artery stenoses by digital subtraction angiography: A pathoanatomic validation

Lloyd W. Klein, Jai B. Agarwal, Mitchell C. Rosenberg, Gregory Stets, William S. Weintraub, Ricky M. Schneider, George Hermann, Richard H. Helfant

Journal:

American Heart Journal

Année:

1987

Langue:

english

Fichier:

PDF, 1.30 MB

english, 1987

25

Thallium imaging with single photon emission computed tomography

Abdulmassih S. Iskandrian, Jaekyeong Heo, Alan Askenase, Bernard L. Segal, Richard H. Helfant

Journal:

American Heart Journal

Année:

1987

Langue:

english

Fichier:

PDF, 6.48 MB

english, 1987

26

Surgical revascularization of left main coronary artery stenosis: Determinants of perioperative and long-term outcome in the 1980s

Jonathan Gomberg, Lloyd W. Klein, Paul Seelaus, Grant Van S. Parr, Jai B. Agarwal, Richard H. Helfant

Journal:

American Heart Journal

Année:

1988

Langue:

english

Fichier:

PDF, 773 KB

english, 1988

27

The resolution of coronary collaterals after successful percutaneous transluminal coronary angioplasty

Lloyd W Klein, Jai B Agarwal, Richard H Helfant

Journal:

American Heart Journal

Année:

1988

Langue:

english

Fichier:

PDF, 545 KB

english, 1988

28

The effect of ionic contrast medium on the movement of acutely ischemic and nonischemic canine myocardium

Shigetaka Noma, Alan D Askenase, Jai B Agarwal, Richard H Helfant

Journal:

American Heart Journal

Année:

1988

Langue:

english

Fichier:

PDF, 685 KB

english, 1988

29

The comparative effects of diphenylhydantoin (Dilantin) and frocainamide (Pronestyl) on the automaticity and conductivity of the digitalisintoxicated heart

Richard H. Helfant, Benjamin J. Scherlag, Anthony N. Damato

Journal:

The American Journal of Cardiology

Année:

1967

Langue:

english

Fichier:

PDF, 250 KB

english, 1967

30

Use of diphenylhydantoin sodium to dissociate the effects of procainamide on automaticity and conduction in the normal and arrhythmic heart

Richard H. Helfant, Benjamin J. Scherlag, Anthony N. Damato

Journal:

The American Journal of Cardiology

Année:

1967

Langue:

english

Fichier:

PDF, 530 KB

english, 1967

31

The electrophysiological effects of countershock before and after digitalis sensitization and after diphenylhydantoin (DPH) desensitization

Richard H. Helfant, Benjamin J. Scherlag, Anthony N. Damato

Journal:

The American Journal of Cardiology

Année:

1968

Langue:

english

Fichier:

PDF, 246 KB

english, 1968

32

The interrelations between extent of coronary artery disease, presence of collaterals, ventriculographic abnormalities and hemodynamics

Richard H. Helfant, Harvey G. Kemp, Richard Gorlin

Journal:

The American Journal of Cardiology

Année:

1970

Langue:

english

Fichier:

PDF, 123 KB

english, 1970

33

Atrial pacing in coronary heart disease: Effect on hemodynamics, metabolism and coronary circulation

James S. Forrester, Richard H. Helfant, Andre Pasternac, Ezra A. Amsterdam, Albert S. Most, Harvey G. Kemp, Richard Gorlin

Journal:

The American Journal of Cardiology

Année:

1971

Langue:

english

Fichier:

PDF, 781 KB

english, 1971

34

Limitations of myocardial revascularization in restoration of regional contraction abnormalities produced by coronary occlusion

Vidya S. Banka, Kul D. Chadda, Steven G. Meister, Richard H. Helfant

Journal:

The American Journal of Cardiology

Année:

1973

Langue:

english

Fichier:

PDF, 147 KB

english, 1973

35

Temporal sequence of dynamic contractile characteristics in ischemic and nonischemic myocardium after acute coronary ligation

Vidya S. Banka, Richard H. Helfant

Journal:

The American Journal of Cardiology

Année:

1974

Langue:

english

Fichier:

PDF, 650 KB

english, 1974

36

Limitations of myocardial revascularization in restoration of regional contraction abnormalities produced by coronary occlusion

Vidya S. Banka, Kul D. Chadda, Richard H. Helfant

Journal:

The American Journal of Cardiology

Année:

1974

Langue:

english

Fichier:

PDF, 767 KB

english, 1974

37

Differential effects of digitalis on contraction of ischemic, border and nonischemic ventricular zones following coronary ligation

Vidya S. Banka, Kul D. Chadda, Monty Bodenheimer, Richard H. Helfant

Journal:

The American Journal of Cardiology

Année:

1974

Langue:

english

Fichier:

PDF, 144 KB

english, 1974

38

Value of coronary collaterals, pathologic Q waves and segmental location as determinants of reversibility of asynergy in coronary heart disease

Vidya S. Banka, Monty Bodenheimer, Richard H. Helfant

Journal:

The American Journal of Cardiology

Année:

1974

Langue:

english

Fichier:

PDF, 144 KB

english, 1974

39

Q waves and asynergy: Predictive value and hemodynamic significance of anatomic localization

Monty Bodenheimer, Vidya S. Banka, Richard H. Helfant

Journal:

The American Journal of Cardiology

Année:

1974

Langue:

english

Fichier:

PDF, 136 KB

english, 1974

40

Effects of nitroglycerin on regional left ventricular length-tension relations after coronary occlusion

Vidya S. Banka, Monty Bodenheimer, Richard H. Helfant

Journal:

The American Journal of Cardiology

Année:

1974

Langue:

english

Fichier:

PDF, 150 KB

english, 1974

41

Q waves and ventricular asynergy: Predictive value and hemodynamic significance of anatomic localization

Monty M. Bodenheimer, Vidya S. Banka, Richard H. Helfant

Journal:

The American Journal of Cardiology

Année:

1975

Langue:

english

Fichier:

PDF, 516 KB

english, 1975

42

Digitalis in experimental acute myocardial infarction: Differential effects on contractile performance of ischemic, border and nonischemic ventricular zones in the dog

Vidya S. Banka, Kul D. Chadda, Monty M. Bodenheimer, Richard H. Helfant

Journal:

The American Journal of Cardiology

Année:

1975

Langue:

english

Fichier:

PDF, 918 KB

english, 1975

43

Temporal relationship of local electrograms and contractile changes following coronary occlusion and revascularization

Monty Bodenheimer, Vidya S. Banka, Rafael Levites, Richard H. Helfant

Journal:

The American Journal of Cardiology

Année:

1975

Langue:

english

Fichier:

PDF, 148 KB

english, 1975

44

Determinants of reversible asynergy: The native coronary circulation

Vidya S. Banka, Monty Bodenheimer, Richard H. Helfant

Journal:

The American Journal of Cardiology

Année:

1975

Langue:

english

Fichier:

PDF, 142 KB

english, 1975

45

Electrophysiological effects of nitroglycerin during experimental coronary occlusion

Rafael Levites, Monty Bodenheimer, Richard H. Helfant

Journal:

The American Journal of Cardiology

Année:

1975

Langue:

english

Fichier:

PDF, 158 KB

english, 1975

46

Reduction of pulmonary venous pressure (PVP) with propranolol in mitral stenosis during sinus rhythm

Steven G. Meister, Gilson S. Feitosa, Toby R. Engel, Richard H. Helfant, William S. Frankl

Journal:

The American Journal of Cardiology

Année:

1975

Langue:

english

Fichier:

PDF, 149 KB

english, 1975

47

Nitroglycerin in experimental myocardial infarction effects on regional left ventricular length and tension

Vidya S Banka, Monty M Bodenheimer, Richard H Helfant

Journal:

The American Journal of Cardiology

Année:

1975

Langue:

english

Fichier:

PDF, 644 KB

english, 1975

48

Temporal relation of epicardial electrographic, contractile and biochemical changes after acute coronary occlusion and reperfusion

Monty M. Bodenheimer, Vidya S. Banka, Rafael Levites, Richard H. Helfant

Journal:

The American Journal of Cardiology

Année:

1976

Langue:

english

Fichier:

PDF, 847 KB

english, 1976

49

Effect of nitroprusside on local contractile performance after coronary ligation and reperfusion

Vidya S. Banka, Monty M. Bodenheimer, Richard H. Helfant

Journal:

The American Journal of Cardiology

Année:

1976

Langue:

english

Fichier:

PDF, 627 KB

english, 1976

50

Relation between progressive decreases in regional coronary perfusion and contractile abnormalities

Vidya S. Banka, Monty M. Bodenheimer, Richard H. Helfant

Journal:

The American Journal of Cardiology

Année:

1977

Langue:

english

Fichier:

PDF, 782 KB

english, 1977