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Karl Q. Schwarz, M.D.

Cardiology

Publications

Showing all 40 journal articles & 0 books available

Journal Articles

5/15/2016
Alkhouli M, Sajjad W, Lee J, Fernandez G, Waits B, Schwarz KQ, Cove CJ. "Prevalence of Non-Left Anterior Descending Septal Perforator Culprit in Patients With Hypertrophic Cardiomyopathy Undergoing Alcohol Septal Ablation." The American journal of cardiology.. 2016 May 15; 117(10):1655-1660. Epub 2016 Mar 02.

2016
Tchantchaleishvili V, Hallinan W, Schwarz KQ, Massey HT. "Long-term total cardiac support in a Fontan-type circulation with HeartMate II left ventricular assist device." Interactive cardiovascular and thoracic surgery.. 2016 22(5):692-4. Epub 2016 Feb 16.

3/2015
Lillie JS, Liberson AS, Mix D, Schwarz KQ, Chandra A, Phillips DB, Day SW, Borkholder DA. "Pulse Wave Velocity Prediction and Compliance Assessment in Elastic Arterial Segments." . 2015 Mar 0; 6(1):49-58. Epub 2014 Dec 06.

2015
Sherazi S, McNitt S, Choudhary N, Shah AH, Aktas MK, Asgher A, Schwarz KQ, Zareba W. "Predictors of mortality in patients hospitalized for congestive heart failure with left ventricular ejection fraction ? 40." Cardiology journal.. 2015 22(4):382-90. Epub 2015 Jan 15.

9/2014
Tchantchaleishvili V, Sagebin F, Ross RE, Hallinan W, Schwarz KQ, Massey HT. "Evaluation and treatment of pump thrombosis and hemolysis." Annals of cardiothoracic surgery. 2014 Sep 0; 3(5):490-5.

2014
Sifain AR, Schwarz KQ, Hallinan W, Massey HT, Alexis JD. "Ventricular assist device thrombosis following recovery of left ventricular function." ASAIO journal : a peer-reviewed journal of the American Society for Artificial Internal Organs.. 2014 60(2):243-5.

5/2010
Parikh SS, Jons C, McNitt S, Daubert JP, Schwarz KQ, Hall B. "Predictive capability of left atrial size measured by CT, TEE, and TTE for recurrence of atrial fibrillation following radiofrequency catheter ablation." Pacing and clinical electrophysiology : PACE.. 2010 May 0; 33(5):532-40. Epub 2010 Feb 01.

3/2010
Schwarz KQ, Parikh SS, Chen X, Farrar DJ, Steinmetz S, Ramamurthi S, Hallinan W, Massey HT, Chen L. "Non-invasive flow measurement of a rotary pump ventricular assist device using quantitative contrast echocardiography." Journal of the American Society of Echocardiography : official publication of the American Society of Echocardiography.. 2010 Mar 0; 23(3):324-9.

4/2009
Tokarz SR, Aktas MK, Kroening D, Sawyer TJ, Daubert JP, Huang DT, Schwarz KQ. "Identification of a retained intravascular wire by three-dimensional transesophageal echocardiography." Echocardiography.. 2009 Apr 0; 26(4):463-4. Epub 2008 Dec 02.

12/2008
Moss AJ, Zareba W, Schwarz KQ, Rosero S, McNitt S, Robinson JL. "Ranolazine shortens repolarization in patients with sustained inward sodium current due to type-3 long-QT syndrome." Journal of cardiovascular electrophysiology.. 2008 Dec 0; 19(12):1289-93. Epub 2008 Jul 25.

5/2007
Mieszczanska H, Kaba NK, Francis CW, Gerich JE, Dodis R, Schwarz KQ, Phipps RP, Smith BH, Lee M, Messing S, Taubman MB. "Effects of pioglitazone on fasting and postprandial levels of lipid and hemostatic variables in overweight non-diabetic patients with coronary artery disease." Journal of thrombosis and haemostasis : JTH.. 2007 May 0; 5(5):942-9.

12/2005
Bezante GP, Rosa GM, Bruni R, Chen X, Villa G, Scopinaro A, Balbi M, Barsotti A, Schwarz KQ. "Improved assessment of left ventricular volumes and ejection fraction by contrast enhanced harmonic color Doppler echocardiography." The international journal of cardiovascular imaging.. 2005 Dec 0; 21(6):609-16.

1/2005
Bezante GP, Chen X, Molinari G, Valbusa A, Deferrari L, Sebastiani V, Yokoyama N, Steinmetz S, Barsotti A, Schwarz KQ. "Left ventricular myocardial mass determination by contrast enhanced colour Doppler compared with magnetic resonance imaging." Heart.. 2005 Jan 0; 91(1):38-43.

1/2004
Yokoyama N, Schwarz KQ, Steinmetz SD, Li X, Chen X. "Prognostic value of contrast stress echocardiography in patients with image quality too limited for traditional noncontrast harmonic echocardiography." Journal of the American Society of Echocardiography : official publication of the American Society of Echocardiography.. 2004 Jan 0; 17(1):15-20.

5/2003
Yokoyama N, Schwarz KQ, Chen X, Steinmetz SD, Becher H, Schimpky C, Schlief R. "The effect of echo contrast agent on Doppler velocity measurements." Ultrasound in medicine & biology.. 2003 May 0; 29(5):765-70.

9/2002
Gudavalli A, Kalaria VG, Chen X, Schwarz KQ. "Intrapulmonary arteriovenous shunt: diagnosis by saline contrast bubbles in the pulmonary veins." Journal of the American Society of Echocardiography : official publication of the American Society of Echocardiography.. 2002 Sep 0; 15(9):1012-4.

5/2000
Schwarz KQ, Bezante GP, Chen X, Villa G, Brunelli C. "Contrast harmonic color Doppler left ventriculography: machine-interpreted left ventricular ejection fraction compared with equilibrium-gated radionuclide ventriculography." Journal of the American Society of Echocardiography : official publication of the American Society of Echocardiography.. 2000 May 0; 13(5):368-78.

4/2000
Kalaria VG, Schwarz KQ, Eichelberger JP, Allen M. ""Vegetation plop"--auscultatory findings in large mitral valve vegetation." Clinical cardiology.. 2000 Apr 0; 23(4):291-2.

6/1998
Chen X, Schwarz KQ, Phillips D, Steinmetz SD, Schlief R. "A mathematical model for the assessment of hemodynamic parameters using quantitative contrast echocardiography." IEEE transactions on bio-medical engineering.. 1998 Jun 0; 45(6):754-65.

2/1998
Schwarz KQ, Chen X, Steinmetz S. "Methods for quantifying ultrasound backscatter and two-dimensional video intensity: implications for contrast-enhanced sonography." Journal of the American Society of Echocardiography : official publication of the American Society of Echocardiography.. 1998 Feb 0; 11(2):155-68.

12/1997
Bauer A, Becker G, Henz P, Jachimczak P, Schwarz KQ, Haase A, Bogdahn U. "Transcranial duplex ultrasound: experience with contrast enhancing agents." International angiology : a journal of the International Union of Angiology.. 1997 Dec 0; 16(4):216-21.

1997
Schwarz KQ, Chen X, Steinmetz S, Phillips D. "Harmonic imaging with Levovist." Journal of the American Society of Echocardiography : official publication of the American Society of Echocardiography.. 1997 10(1):1-10.

1997
Chen X, Phillips D, Schwarz KQ, Mottley JG, Parker KJ. "The measurement of backscatter coefficient from a broadband pulse-echo system: a new formulation." IEEE transactions on ultrasonics, ferroelectrics, and frequency control.. 1997 44(2):515-25.

1996
Schwarz KQ, Chen X, Bezante GP, Phillips D, Schlief R. "The Doppler kinetics of microbubble echo contrast." Ultrasound in medicine & biology.. 1996 22(4):453-62.

1996
Schwarz KQ, Bezante GP, Chen X, Phillips D, Schlief R. "Hemodynamic effects of microbubble echo contrast." Journal of the American Society of Echocardiography : official publication of the American Society of Echocardiography.. 1996 9(6):795-804.

1995
Schwarz KQ, Bezante GP, Chen X. "When can Doppler be used in place of integrated backscatter as a measure of scattered ultrasound intensity?" Ultrasound in medicine & biology.. 1995 21(2):231-42.

10/1994
Schwarz KQ, Becher H, Schimpfky C, Vorwerk D, Bogdahn U, Schlief R. "Doppler enhancement with SH U 508A in multiple vascular regions." Radiology.. 1994 Oct 0; 193(1):195-201.

9/1994
Roberts WA, Risher WH, Schwarz KQ. "Transesophageal echocardiographic identification of persistent left superior vena cava: retrograde administration of cardioplegia during cardiac surgery." Anesthesiology.. 1994 Sep 0; 81(3):760-2.

6/1994
Chen X, Schwarz KQ, Parker KJ. "Acoustic coupling from a focused transducer to a flat plate and back to the transducer." The Journal of the Acoustical Society of America.. 1994 Jun 0; 95(6):3049-54.

5/1994
Schwarz KQ, Bezante GP, Becher H, Schimpfky C, Vorwerk D, Bogdahn U, Schlief R. "Efficacy SH U 508 A (Levovist) as blood pool enhancer in the Doppler evaluation of multiple vascular regions." La Radiologia medica.. 1994 May 0; 87(5 Suppl 1):3-14.

11/1993
Chen X, Schwarz KQ, Parker KJ. "Radiation pattern of a focused transducer: a numerically convergent solution." The Journal of the Acoustical Society of America.. 1993 Nov 0; 94(5):2979-91.

9/1/1993
Eichelberger JP, Schwarz KQ, Black ER, Green RM, Ouriel K. "Predictive value of dobutamine echocardiography just before noncardiac vascular surgery." The American journal of cardiology.. 1993 Sep 1; 72(7):602-7.

2/1993
Culver DL, Bezante GP, Schwarz KQ, Meltzer RS. "Transesophageal echocardiography in the diagnosis of acquired aneurysms of the left atrial appendage." Clinical cardiology.. 1993 Feb 0; 16(2):149-51.

1993
Schwarz KQ, Bezante GP, Chen X, Mottley JG, Schlief R. "Volumetric arterial flow quantification using echo contrast. An in vitro comparison of three ultrasonic intensity methods: radio frequency, video and Doppler." Ultrasound in medicine & biology.. 1993 19(6):447-60.

1993
Schwarz KQ, Bezante GP, Chen X, Schlief R. "Quantitative echo contrast concentration measurement by Doppler sonography." Ultrasound in medicine & biology.. 1993 19(4):289-97.

12/1992
Schwarz KQ, Church CC, Serrino P, Meltzer RS. "The acoustic filter: an ultrasonic blood filter for the heart-lung machine." The Journal of thoracic and cardiovascular surgery.. 1992 Dec 0; 104(6):1647-53.

11/1992
Carstensen EL, Duck FA, Meltzer RS, Schwarz KQ, Keller B. "Bioeffects in echocardiography." Echocardiography.. 1992 Nov 0; 9(6):605-23.

2/15/1991
Meltzer RS, Schwarz KQ, Mottley JG, Everbach EC. "Therapeutic cardiac ultrasound." The American journal of cardiology.. 1991 Feb 15; 67(5):422-4.

10/1989
Reisner SA, Lichtenberg GS, Shapiro JR, Schwarz KQ, Meltzer RS. "Exercise Doppler echocardiography in patients with mitral prosthetic valves." American heart journal.. 1989 Oct 0; 118(4):755-9.

7/1/1988
Schwarz KQ, Meltzer RS. "Experience rounding with a hand-held two-dimensional cardiac ultrasound device." The American journal of cardiology.. 1988 Jul 1; 62(1):157-9.