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K. Sagar · SciRah

Researcher profile · Semantic Scholar

K. Sagar

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K. Sagar — researcher profile on SciRah

h-index: 29
Works: 112
Citations: 3,009

Most-cited papers

Determination of Stroke Volume and Cardiac Output During Exercise: Comparison of Two-Dimensional and Doppler Echocardiography, Fick Oximetry, and Thermodilution
J. Christie, L. M. Sheldahl, F. E. Tristani, K. Sagar +2 more
1987Circulation208 citations Open access
Semantic Scholar
Cardiovascular regulation during head-out water immersion exercise.
J. Christie, L. M. Sheldahl, F. Tristani, L. Wann +5 more
1990Journal of applied physiology199 citations
Semantic Scholar
Dobutamine stress echocardiography for risk stratification after myocardial infarction.
M. Carlos, S. Smart, J. Wynsen, K. Sagar
1997Circulation165 citations
Semantic Scholar
The influence of preload and heart rate on Doppler echocardiographic indexes of left ventricular performance: comparison with invasive indexes in an experimental preparation.
Kenneth Wallmeyer, L. Wann, K. Sagar, J. Kalbfleisch +1 more
1986Circulation127 citations Open access
Semantic Scholar
Arterial Pressure, Left Ventricular Mass, and Aldosterone in Essential Hypertension
A. El-Gharbawy, V. Nadig, Jane Morley Kotchen, C. Grim +7 more
2001HYPERTENSION123 citations
Semantic Scholar
Intramyocardial variability in integrated backscatter: effects of coronary occlusion and reperfusion.
K. Sagar, T. Rhyne, D. Warltier, L. Pelc +1 more
1987Circulation113 citations Open access
Semantic Scholar
Safety and accuracy of dobutamine-atropine stress echocardiography for the detection of residual stenosis of the infarct-related artery and multivessel disease during the first week after acute myocardial infarction.
S. Smart, T. Knickelbine, T. Stoiber, M. Carlos +2 more
1997Circulation106 citations
Semantic Scholar
Pleural Effusion as a Cause of Right Ventricular Diastolic Collapse
K. Vaska, L. Wann, K. Sagar, H. Klopfenstein
1992Circulation93 citations Open access
Semantic Scholar
Doppler echocardiographic evaluation of Hancock and Björk-Shiley prosthetic values.
K. Sagar, L. Wann, Walter H. J. Paulsen, Donald W. Romhilt
1986Journal of the American College of Cardiology93 citations Open access
Semantic Scholar
Dobutamine-atropine stress echocardiography for the detection of coronary artery disease in patients with left ventricular hypertrophy. Importance of chamber size and systolic wall stress.
S. Smart, T. Knickelbine, F. Malik, K. Sagar
2000Circulation91 citations Open access
Semantic Scholar
Doppler echocardiographic measurement of flow velocity in the ascending aorta during supine and upright exercise.
P. J. Daley, K. Sagar, L. Wann
1985British heart journal85 citations Open access
Semantic Scholar
Dobutamine-atropine stress echocardiography and dipyridamole sestamibi scintigraphy for the detection of coronary artery disease: limitations and concordance.
S. Smart, A. Bhatia, R. Hellman, T. Stoiber +3 more
2000Journal of the American College of Cardiology78 citations Open access
Semantic Scholar
The value of dobutamine stress echocardiography for the detection of coronary artery disease in women.
Peter N. Dionisopoulos, Jocelyn D. Collins, S. Smart, T. Knickelbine +1 more
1997Journal of the American Society of Echocardiography76 citations
Semantic Scholar
Relation of ultrasonic backscatter and acoustic propagation properties to myofibrillar length and myocardial thickness.
Patrick D. O’Brien, William D. O'Brien, T. Rhyne, D. Warltier +1 more
1995Circulation74 citations
Semantic Scholar
Influence of heart rate, preload, afterload, and inotropic state on myocardial ultrasonic backscatter.
K. Sagar, Lori E Pelc, T. Rhyne, L. Wann +1 more
1988Circulation70 citations Open access
Semantic Scholar
Echocardiography in Emergency Medicine: A Policy Statement by the American Society of Echocardiography and the American College of Cardiology
W. Stewart, P. Douglas, K. Sagar, J. Seward +8 more
199967 citations Open access
Semantic Scholar
Left ventricular function of heart allografts during acute rejection: an echocardiographic assessment.
W. Paulsen, N. Magid, K. Sagar, A. Hastillo +3 more
1985The Journal of heart transplantation64 citations
Semantic Scholar
Usefulness of transesophageal echocardiography in diagnosing lipomatous hypertrophy of the atrial septum with comparison to transthoracic echocardiography.
W. T. Pochis, K. Saeian, K. Sagar
1992American Journal of Cardiology63 citations
Semantic Scholar
Relationship of left ventricular mass to defibrillation threshold for the implantable defibrillator: a combined clinical and animal study.
P. Chapman, K. Sagar, J. Wetherbee, P. Troup
1987American Heart Journal59 citations
Semantic Scholar
Role of exercise Doppler echocardiography in isolated mitral stenosis.
K. Sagar, L. Wann, W. H. Paulson, Steven W. Lewis
1987Chest53 citations
Semantic Scholar
Dobutamine-atropine stress echocardiography for risk stratification in patients with chronic left ventricular dysfunction.
S. Smart, Peter N. Dionisopoulos, T. Knickelbine, Timothy Schuchard +1 more
1999Journal of the American College of Cardiology51 citations Open access
Semantic Scholar
Acoustic propagation properties of normal, stunned, and infarcted myocardium. Morphological and biochemical determinants.
William D. O'Brien, K. Sagar, D. Warltier, T. Rhyne
1995Circulation47 citations
Semantic Scholar
Ultrasonic tissue characterization for diagnosis of acute myocardial infarction in the coronary care unit.
K. Saeian, T. Rhyne, K. Sagar
1994American Journal of Cardiology41 citations
Semantic Scholar
Dobutamine-atropine stress echocardiography for reversible dysfunction during the first week after acute myocardial infarction: limitations and determinants of accuracy.
S. Smart, J. Wynsen, K. Sagar
1997Journal of the American College of Cardiology37 citations Open access
Semantic Scholar
Improved baroreflex sensitivity in elderly hypertensives on lisinopril is not explained by blood pressure reduction alone
B. Egan, Michael J. Fleissner, K. Stepniakowski, J. Michael Neahring +2 more
1993Journal of Hypertension35 citations
Semantic Scholar
Electrocardiographic criteria for diagnosis of left ventricular hypertrophy in the presence of complete right bundle branch block.
Byron F. Vandenberg, K. Sagar, Walter H. J. Paulsen, Donald W. Romhilt
1989American Journal of Cardiology30 citations
Semantic Scholar
The effect of changes in afterload on Doppler echocardiographic indexes of left ventricular performance.
Kenneth Wallmeyer, L. Wann, K. Sagar, Peter Czakanski +2 more
1988Journal of the American Society of Echocardiography29 citations
Semantic Scholar
Low dose dobutamine echocardiography is more predictive of reversible dysfunction after acute myocardial infarction than resting single photon emission computed tomographic thallium-201 scintigraphy.
S. Smart, T. Stoiber, R. Hellman, John Duchak +6 more
1997American Heart Journal28 citations
Semantic Scholar
The Myocardial Signature: Absolute Backscatter, Cyclical Variation, Frequency Variation, and Statistics
T. Rhyne, K. Sagar, S. Wann, G. Haasler
198628 citations
Semantic Scholar
Echocardiographic demonstration of rapid growth of a left atrial myxoma.
W. T. Pochis, Michael Wingo, M. Cinquegrani, K. Sagar
1991American Heart Journal26 citations
Semantic Scholar
Transvenous biopsy of intracardiac tumor under transesophageal echocardiographic guidance.
S. Salka, R. Siegel, K. Sagar
1993American Heart Journal25 citations
Semantic Scholar
Detection of exercise induced changes in left ventricular performance by Doppler echocardiography.
P. Daley, K. Sagar, B. Collier, J. Kalbfleisch +1 more
1987British heart journal25 citations Open access
Semantic Scholar
Evolution of a papillary fibroelastoma.
M. Malik, K. Sagar, J. Wynsen, D. Kenny
1998Journal of the American Society of Echocardiography23 citations
Semantic Scholar
Estimation of Myocardial Infarct Size With Ultrasonic Tissue Characterization
K. Sagar, L. Pelc, T. Rhyne, J. Howard +1 more
1991Circulation22 citations Open access
Semantic Scholar
The myocardial signature: absolute backscatter, cyclical variation, frequency variation, and statistics.
T. Rhyne, K. Sagar, S. Wann, G. Haasler
1986Ultrasonic imaging (Print)22 citations
Semantic Scholar
Cerebral thromboembolization after cardioversion of atrial fibrillation in patients without transesophageal echocardiographic findings of left atrial thrombus.
S. Salka, K. Saeian, K. Sagar
1993American Heart Journal21 citations
Semantic Scholar
Differential roles of myocardial Ca2+ channels and Na+/Ca2+ exchange in myocardial reperfusion injury in open chest dogs: relative roles during ischemia and reperfusion.
S. Smart, K. Sagar, D. Warltier
1997Cardiovascular Research20 citations
Semantic Scholar
Accuracy of color Doppler transesophageal echocardiography for diagnosis of patent foramen ovale.
Duane C. Berkompas, K. Sagar
1994Journal of the American Society of Echocardiography19 citations
Semantic Scholar
Role of ultrasonic tissue characterization to distinguish reversible from irreversible myocardial injury.
K. Sagar, L. Pelc, T. Rhyne, Richard A. Komorowski +2 more
1990Journal of the American Society of Echocardiography18 citations
Semantic Scholar
Blood pressure, left ventricular mass, and lead exposure in battery manufacturing workers.
A. Tepper, Charles A. Mueller, M. Singal, K. Sagar
2001American Journal of Industrial Medicine17 citations
Semantic Scholar
Doppler Echocardiographic Evaluation of Left Ventricular Function
K. Saeian, L. Wann, K. Sagar
1990Echocardiography16 citations
Semantic Scholar
Injury to the Ca2+ ATPase of the sarcoplasmic reticulum in anesthetized dogs contributes to myocardial reperfusion injury.
S. Smart, K. Sagar, Jo El J. Schultz, D. Warltier +1 more
1997Cardiovascular Research15 citations Open access
Semantic Scholar
Dobutamine stress echocardiography predicts left ventricular remodeling after acute myocardial infarction.
Peter N. Dionisopoulos, S. Smart, K. Sagar
1999Journal of the American Society of Echocardiography14 citations
Semantic Scholar
Quantitative ultrasonic assessment of normal and ischaemic myocardium with an acoustic microscope: relationship to integrated backscatter.
K. Sagar, D. H. Agemura, W. O'Brien, L. Pelc +4 more
1990Cardiovascular Research14 citations
Semantic Scholar
Intracoronary amiloride prevents contractile dysfunction of postischemic "stunned" myocardium: role of hemodynamic alterations and inhibition of Na+/H+ exchange and L-type Ca2+ channels.
S. Smart, Anthony LoCurto, Jo El Schultz, K. Sagar +1 more
1995Journal of the American College of Cardiology13 citations Open access
Semantic Scholar
Comparison of peak and modal aortic blood flow velocities with invasive measures of left ventricular performance.
K. Sagar, L. Wann, L. E. Boerboom, John H. Kalbfleisch +2 more
1988Journal of the American Society of Echocardiography12 citations
Semantic Scholar
Echocardiography in the Diagnosis of Cardiac Tamponade
K. Sagar, L. Wann, H. Sidney Klopefenstein
198712 citations
Semantic Scholar
Long‐Term Therapy with Benazepril in Patients with Congestive Heart Failure: Effects on Clinical Status and Exercise Tolerance
H. Ribner, K. Sagar, Stephen P. Glasser, Ann-Ming Hsieh +4 more
1990Journal of clinical pharmacology11 citations
Semantic Scholar
Acute, reversible tricuspid insufficiency: creation in canine model.
T. Kinney, Gordon N. Olinger, K. Sagar, L. E. Boerboom
1991American Journal of Physiology10 citations
Semantic Scholar
IBR5: an optimal measurement of integrated backscatter and cyclic variation of integrated backscatter.
T. Rhyne, K. Sagar
1990Ultrasonic imaging (Print)10 citations
Semantic Scholar

Frequent co-authors

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L. Wann×13
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L. Wann — researcher profile on SciRah
S. Smart×12
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S. Smart — researcher profile on SciRah
T. Rhyne×12
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T. Rhyne — researcher profile on SciRah
D. Warltier×9
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D. Warltier — researcher profile on SciRah

×4

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J. Wynsen — researcher profile on SciRah

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L. Pelc — researcher profile on SciRah

T. Knickelbine×4

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T. Knickelbine — researcher profile on SciRah

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K. Saeian — researcher profile on SciRah

H. Klopfenstein×3

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H. Klopfenstein — researcher profile on SciRah

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T. Stoiber — researcher profile on SciRah

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B. Collier — researcher profile on SciRah

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J. Christie — researcher profile on SciRah