Ingela Schnittger, MD

Cardiologist

General Cardiology

  • 300 Pasteur Drive
  • Stanford, CA 94305
  • Phone: 650-723-6459
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Professional Education

Board Certification: Echocardiography, National Board of Echocardiography (1998)

Fellowship: Stanford University School of Medicine (1981) CA

Residency: Stanford University School of Medicine (1980) CA

Internship: Seraphimer Hospital (1976) Sweden

Residency: Seraphimer Hospital (1978) Sweden

Fellowship: Stanford University School of Medicine (1977) CA

Board Certification: Cardiovascular Disease, American Board of Internal Medicine (1983)

Board Certification: Internal Medicine, American Board of Internal Medicine (1980)

Residency: University of Connecticut Health Center (1979) CT

Medical Education: Karolinska Institute (1975) Sweden

Race differences in ventricular remodeling and function among college football players.
Haddad, F., Peter, S., Hulme, O., Liang, D., Schnittger, I., & Ashley, E. A. (2013). Race differences in ventricular remodeling and function among college football players. American journal of cardiology, 112(1), 128-134.

A novel stress echocardiography pattern for myocardial bridge with invasive structural and hemodynamic correlation.
Lin, S., Tremmel, J. A., Yamada, R., Rogers, I. S., Yong, C. M., & Schnittger, I. (2013). A novel stress echocardiography pattern for myocardial bridge with invasive structural and hemodynamic correlation. Journal of the American Heart Association, 2(2).

Clinical and Functional Correlates of Early Microvascular Dysfunction After Heart Transplantation
Haddad, F., Khazanie, P., Deuse, T., Weisshaar, D., Zhou, J., & Fearon, W. F. (2012). Clinical and Functional Correlates of Early Microvascular Dysfunction After Heart Transplantation. CIRCULATION-HEART FAILURE, 5(6), 759-768.

Characteristics and Outcome After Hospitalization for Acute Right Heart Failure in Patients With Pulmonary Arterial Hypertension
Haddad, F., Peterson, T., Fuh, E., Kudelko, K. T., Perez, V. D. J., & Zamanian, R. T. (2011). Characteristics and Outcome After Hospitalization for Acute Right Heart Failure in Patients With Pulmonary Arterial Hypertension. CIRCULATION-HEART FAILURE, 4(6), 692-699.

A comparison of echocardiographic measures of diastolic function for predicting all-cause mortality in a predominantly male population
Nguyen, P. K., Schnittger, I., & Heidenreich, P. A. (2011). A comparison of echocardiographic measures of diastolic function for predicting all-cause mortality in a predominantly male population. AMERICAN HEART JOURNAL, 161(3), 530-537.

Mechanisms of exercise intolerance in patients with hypertrophic cardiomyopathy
Le, V.-V., Perez, M. V., Wheeler, M. T., Myers, J., Schnittger, I., & Ashley, E. A. (2009). Mechanisms of exercise intolerance in patients with hypertrophic cardiomyopathy. AMERICAN HEART JOURNAL, 158(3), E27-E34.

Multiplanar Reconstruction of Three-Dimensional Transthoracic Echocardiography Improves the Presurgical Assessment of Mitral Prolapse
Beraud, A.-S., Schnittger, I., Miller, D. C., & Liang, D. H. (2009). Multiplanar Reconstruction of Three-Dimensional Transthoracic Echocardiography Improves the Presurgical Assessment of Mitral Prolapse. JOURNAL OF THE AMERICAN SOCIETY OF ECHOCARDIOGRAPHY, 22(8), 907-913.

A Novel Non-Invasive Method of Estimating Pulmonary Vascular Resistance in Patients With Pulmonary Arterial Hypertension
Haddad, F., Zamanian, R., Beraud, A.-S., Schnittger, I., Feinstein, J., & Rosenthal, D. (2009). A Novel Non-Invasive Method of Estimating Pulmonary Vascular Resistance in Patients With Pulmonary Arterial Hypertension. JOURNAL OF THE AMERICAN SOCIETY OF ECHOCARDIOGRAPHY, 22(5), 523-529.

An unusual case of partial anomalous pulmonary venous drainage: Utility of the cardiac MRI
Kapoor, J. R., Katikireddy, C., Rubin, G., Schnittger, I., & McConnell, M. V. (2009). An unusual case of partial anomalous pulmonary venous drainage: Utility of the cardiac MRI. INTERNATIONAL JOURNAL OF CARDIOLOGY, 133(1), E35-E36.

Predictive value of the index of microcirculatory resistance in patients with ST-segment elevation myocardial infarction
Fearon, W. F., Shah, M., Ng, M., Brinton, T., Wilson, A., & Yeung, A. C. (2008). Predictive value of the index of microcirculatory resistance in patients with ST-segment elevation myocardial infarction. JOURNAL OF THE AMERICAN COLLEGE OF CARDIOLOGY, 51(5), 560-565.

Multiplanar visualization in 3D transthoracic echocardiography for precise delineation of mitral valve pathology
Liang, D., Paloma, A., Kuppahally, S. S., Miller, D. C., & Schnittger, I. (2008). Multiplanar visualization in 3D transthoracic echocardiography for precise delineation of mitral valve pathology. ECHOCARDIOGRAPHY-A JOURNAL OF CARDIOVASCULAR ULTRASOUND AND ALLIED TECHNIQUES, 25(1), 84-87.

Comparison of three-dimensional echocardiography to two-dimensional echocardiography and fluoroscopy for monitoring of endomyocardial biopsy
Amitai, M. E., Schnittger, I., Popp, R. L., Chow, J., Brown, P., & Liang, D. H. (2007). Comparison of three-dimensional echocardiography to two-dimensional echocardiography and fluoroscopy for monitoring of endomyocardial biopsy. AMERICAN JOURNAL OF CARDIOLOGY, 99(6), 864-866.

Clinical dilemmas in treating left ventricular thrombus.
Leeper, N. J., Gupta, A., Schnittger, I., & Wu, J. C. (2007). Clinical dilemmas in treating left ventricular thrombus. International journal of cardiology, 114(3), e118-9.

Screening for coronary artery disease after mediastinal irradiation for Hodgkin's disease
Heidenreich, P. A., Schnittger, I., Strauss, H. W., Vagelos, R. H., Lee, B. K., & Hancock, S. L. (2007). Screening for coronary artery disease after mediastinal irradiation for Hodgkin's disease. JOURNAL OF CLINICAL ONCOLOGY, 25(1), 43-49.

Diastolic dysfunction after mediastinal irradiation
Heidenreich, P. A., Hancock, S. L., Vagelos, R. H., Lee, B. K., & Schnittger, I. (2005). Diastolic dysfunction after mediastinal irradiation. AMERICAN HEART JOURNAL, 150(5), 977-982.

A systolic murmur is a common presentation of aortic regurgitation detected by echocardiography
Heidenreich, P. A., Schnittger, I., Hancock, S. L., & Atwood, J. E. (2004). A systolic murmur is a common presentation of aortic regurgitation detected by echocardiography. CLINICAL CARDIOLOGY, 27(9), 502-506.

Asymptomatic cardiac disease following mediastinal irradiation
Heidenreich, P. A., Hancock, S. L., Lee, B. K., Mariscal, C. S., & Schnittger, I. (2003). Asymptomatic cardiac disease following mediastinal irradiation. JOURNAL OF THE AMERICAN COLLEGE OF CARDIOLOGY, 42(4), 743-749.

Accuracy of hand-carried ultrasound
Liang, D., & Schnittger, I. (2003). Accuracy of hand-carried ultrasound. ECHOCARDIOGRAPHY-A JOURNAL OF CARDIOVASCULAR ULTRASOUND AND ALLIED TECHNIQUES, 20(5), 487-490.

Clinical use of cardiac ultrasound performed with a hand-carried device in patients admitted for acute cardiac care
Rugolotto, M., CHANG, C. P., Hu, B., Schnittger, I., & Liang, D. H. (2002). Clinical use of cardiac ultrasound performed with a hand-carried device in patients admitted for acute cardiac care. AMERICAN JOURNAL OF CARDIOLOGY, 90(9), 1040-?.

Rapid assessment of cardiac anatomy and function with a new hand-carried ultrasound device (OptiGo): a comparison with standard echocardiography.
Rugolotto, M., Hu, B. S., Liang, D. H., & Schnittger, I. (2001). Rapid assessment of cardiac anatomy and function with a new hand-carried ultrasound device (OptiGo): a comparison with standard echocardiography. European journal of echocardiography , 2(4), 262-269.

Contrast echocardiography is superior to tissue harmonics for assessment of left ventricular function in mechanically ventilated patients
Kornbluth, M., Liang, D. H., BROWN, P., Gessford, E., & Schnittger, I. (2000). Contrast echocardiography is superior to tissue harmonics for assessment of left ventricular function in mechanically ventilated patients. AMERICAN HEART JOURNAL, 140(2), 291-296.

Clinical outcome in the Marfan syndrome with ascending aortic dilatation followed annually by echocardiography
Kornbluth, M., Schnittger, I., Eyngorina, I., Gasner, C., & Liang, D. H. (1999). Clinical outcome in the Marfan syndrome with ascending aortic dilatation followed annually by echocardiography. AMERICAN JOURNAL OF CARDIOLOGY, 84(6), 753-?.

Native tissue harmonic imaging improves endocardial border definition and visualization of cardiac structures
Kornbluth, M., Liang, D. H., Paloma, A., & Schnittger, I. (1998). Native tissue harmonic imaging improves endocardial border definition and visualization of cardiac structures. JOURNAL OF THE AMERICAN SOCIETY OF ECHOCARDIOGRAPHY, 11(7), 693-701.

Automatic cardiac output measurement (ACOM): Clinical applications of a new noninvasive tool
Trindade, P. T., BROWN, P., Puryear, J. V., Popylisen, S., & Schnittger, I. (1998). Automatic cardiac output measurement (ACOM): Clinical applications of a new noninvasive tool. INTERNATIONAL JOURNAL OF CARDIAC IMAGING, 14(3), 147-154.

Assessment of left ventricular wall motion abnormalities with the use of color kinesis: A valuable visual and training aid
Lau, Y. S., Puryear, J. V., Gan, S. C., Fowler, M. B., Vagelos, R. H., & Schnittger, I. (1997). Assessment of left ventricular wall motion abnormalities with the use of color kinesis: A valuable visual and training aid. JOURNAL OF THE AMERICAN SOCIETY OF ECHOCARDIOGRAPHY, 10(6), 665-672.

Accuracy of biplane and multiplane transesophageal echocardiography in diagnosis of typical acute aortic dissection and intramural hematoma
Keren, A., Kim, C. B., Hu, B. S., Eyngorina, I., Billingham, M. E., & Schnittger, I. (1996). Accuracy of biplane and multiplane transesophageal echocardiography in diagnosis of typical acute aortic dissection and intramural hematoma. JOURNAL OF THE AMERICAN COLLEGE OF CARDIOLOGY, 28(3), 627-636.

Wegener's granulomatosis presenting as dilated cardiomyopathy
Day, J. D., Ellison, K. E., Schnittger, I., & Perlroth, M. G. (1996). Wegener's granulomatosis presenting as dilated cardiomyopathy. WESTERN JOURNAL OF MEDICINE, 165(1-2), 64-66.

Upper airway resistance syndrome, nocturnal blood pressure monitoring, and borderline hypertension
Guilleminault, C., Stoohs, R., Shiomi, T., Kushida, C., & Schnittger, I. (1996). Upper airway resistance syndrome, nocturnal blood pressure monitoring, and borderline hypertension. CHEST, 109(4), 901-908.

Valvular Strands. Cardiogenic Embolism.
Schnittger I. (1996). Valvular Strands. Cardiogenic Embolism. Baltimore:Williams & Wilkins,.

VALUE OF TRANSESOPHAGEAL ECHOCARDIOGRAPHY BEFORE DC CARDIOVERSION IN PATIENTS WITH ATRIAL-FIBRILLATION - ASSESSMENT OF EMBOLIC RISK
Schnittger, I. (1995). VALUE OF TRANSESOPHAGEAL ECHOCARDIOGRAPHY BEFORE DC CARDIOVERSION IN PATIENTS WITH ATRIAL-FIBRILLATION - ASSESSMENT OF EMBOLIC RISK. BRITISH HEART JOURNAL, 73(4), 306-309.

EPIDURAL AIR INJECTION ASSESSED BY TRANSESOPHAGEAL ECHOCARDIOGRAPHY
Jaffe, R. A., Siegel, L. C., Schnittger, L., PROPST, J. W., & BROCKUTNE, J. G. (1995). EPIDURAL AIR INJECTION ASSESSED BY TRANSESOPHAGEAL ECHOCARDIOGRAPHY. REGIONAL ANESTHESIA, 20(2), 152-155.

On-line estimation of cardiac output with a new automated border detection system using transesophageal echocardiography: a preliminary comparison with thermodilution.
Pinto, F. J., Siegel, L. C., Chenzbraun, A., & Schnittger, I. (1994). On-line estimation of cardiac output with a new automated border detection system using transesophageal echocardiography: a preliminary comparison with thermodilution. Journal of cardiothoracic and vascular anesthesia, 8(6), 625-630.

TRANSESOPHAGEAL ECHOCARDIOGRAPHY IN THE INTENSIVE-CARE UNIT - IMPACT ON DIAGNOSIS AND DECISION-MAKING
Chenzbraun, A., Pinto, F. J., & Schnittger, I. (1994). TRANSESOPHAGEAL ECHOCARDIOGRAPHY IN THE INTENSIVE-CARE UNIT - IMPACT ON DIAGNOSIS AND DECISION-MAKING. CLINICAL CARDIOLOGY, 17(8), 438-444.

EXERCISE ECHOCARDIOGRAPHY IN HEAT TRANSPLANT RECIPIENTS - A COMPARISON WITH ANGIOGRAPHY AND INTRACORONARY ULTRASONOGRAPHY
COLLINGS, C. A., Pinto, F. J., Valantine, H. A., Popylisen, S., Puryear, J. V., & Schnittger, I. (1994). EXERCISE ECHOCARDIOGRAPHY IN HEAT TRANSPLANT RECIPIENTS - A COMPARISON WITH ANGIOGRAPHY AND INTRACORONARY ULTRASONOGRAPHY. JOURNAL OF HEART AND LUNG TRANSPLANTATION, 13(4), 604-613.

FILLING PATTERNS IN LEFT-VENTRICULAR HYPERTROPHY - A COMBINED ACOUSTIC QUANTIFICATION AND DOPPLER STUDY
Chenzbraun, A., Pinto, F. J., Popylisen, S., Schnittger, I., & Popp, R. L. (1994). FILLING PATTERNS IN LEFT-VENTRICULAR HYPERTROPHY - A COMBINED ACOUSTIC QUANTIFICATION AND DOPPLER STUDY. JOURNAL OF THE AMERICAN COLLEGE OF CARDIOLOGY, 23(5), 1179-1185.

COMPARISON OF ACOUSTIC QUANTIFICATION AND DOPPLER-ECHOCARDIOGRAPHY IN ASSESSMENT OF LEFT-VENTRICULAR DIASTOLIC VARIABLES
Chenzbraun, A., Pinto, F. J., Popylisen, S., Schnittger, I., & Popp, R. L. (1993). COMPARISON OF ACOUSTIC QUANTIFICATION AND DOPPLER-ECHOCARDIOGRAPHY IN ASSESSMENT OF LEFT-VENTRICULAR DIASTOLIC VARIABLES. BRITISH HEART JOURNAL, 70(5), 448-456.

SEGMENTAL WALL-MOTION ABNORMALITIES IN PATIENTS UNDERGOING TOTAL HIP-REPLACEMENT - CORRELATIONS WITH INTRAOPERATIVE EVENTS
PROPST, J. W., Siegel, L. C., Schnittger, I., FOPPIANO, L., Goodman, S. B., & BROCKUTNE, J. G. (1993). SEGMENTAL WALL-MOTION ABNORMALITIES IN PATIENTS UNDERGOING TOTAL HIP-REPLACEMENT - CORRELATIONS WITH INTRAOPERATIVE EVENTS. ANESTHESIA AND ANALGESIA, 77(4), 743-749.

OBSTRUCTED BREATHING IN CHILDREN DURING SLEEP MONITORED BY ECHOCARDIOGRAPHY
Shiomi, T., Guilleminault, C., Stoohs, R., & Schnittger, I. (1993). OBSTRUCTED BREATHING IN CHILDREN DURING SLEEP MONITORED BY ECHOCARDIOGRAPHY. ACTA PAEDIATRICA, 82(10), 863-871.

Biplane transesophageal echocardiography in the diagnosis of patent foramen ovale.
Chenzbraun, A., Pinto, F. J., & Schnittger, I. (1993). Biplane transesophageal echocardiography in the diagnosis of patent foramen ovale. Journal of the American Society of Echocardiography , 6(4), 417-421.

ABNORMAL POSTOPERATIVE INTERVENTRICULAR MOTION - NEW INTRAOPERATIVE TRANSESOPHAGEAL ECHOCARDIOGRAPHIC EVIDENCE SUPPORTS A NOVEL HYPOTHESIS
Wranne, B., Pinto, F. J., Siegel, L. C., Miller, D. C., & Schnittger, I. (1993). ABNORMAL POSTOPERATIVE INTERVENTRICULAR MOTION - NEW INTRAOPERATIVE TRANSESOPHAGEAL ECHOCARDIOGRAPHIC EVIDENCE SUPPORTS A NOVEL HYPOTHESIS. AMERICAN HEART JOURNAL, 126(1), 161-167.

ASPECTS OF MECHANICAL VENTILATION AFFECTING INTERATRIAL SHUNT FLOW DURING GENERAL-ANESTHESIA
Jaffe, R. A., Pinto, F. J., Schnittger, I., Siegel, L. C., Wranne, B., & BROCKUTNE, J. G. (1992). ASPECTS OF MECHANICAL VENTILATION AFFECTING INTERATRIAL SHUNT FLOW DURING GENERAL-ANESTHESIA. ANESTHESIA AND ANALGESIA, 75(4), 484-488.

SYSTEMIC VENOUS FLOW DURING CARDIAC-SURGERY EXAMINED BY INTRAOPERATIVE TRANSESOPHAGEAL ECHOCARDIOGRAPHY
Pinto, F. J., Wranne, B., STGOAR, F. G., Siegel, L. C., Haddow, G., & Popp, R. L. (1992). SYSTEMIC VENOUS FLOW DURING CARDIAC-SURGERY EXAMINED BY INTRAOPERATIVE TRANSESOPHAGEAL ECHOCARDIOGRAPHY. AMERICAN JOURNAL OF CARDIOLOGY, 69(4), 387-393.

TRANSESOPHAGEAL ECHOCARDIOGRAPHY FOR STUDY OF BIOPROSTHESES IN THE AORTIC-VALVE POSITION
Pinto, F. J., Wranne, B., & Schnittger, I. (1992). TRANSESOPHAGEAL ECHOCARDIOGRAPHY FOR STUDY OF BIOPROSTHESES IN THE AORTIC-VALVE POSITION. AMERICAN JOURNAL OF CARDIOLOGY, 69(3), 274-276.

LEFTWARD SHIFT OF THE INTERVENTRICULAR SEPTUM AND PULSUS PARADOXUS IN OBSTRUCTIVE SLEEP-APNEA SYNDROME
Shiomi, T., Guilleminault, C., Stoohs, R., & Schnittger, I. (1991). LEFTWARD SHIFT OF THE INTERVENTRICULAR SEPTUM AND PULSUS PARADOXUS IN OBSTRUCTIVE SLEEP-APNEA SYNDROME. CHEST, 100(4), 894-902.

Transesophageal echo-Doppler echocardiographic assessment of pulmonary venous flow patterns.
BARTZOKIS, T., LEE, R., YEOH, T. K., GROGIN, H., & Schnittger, I. (1991). Transesophageal echo-Doppler echocardiographic assessment of pulmonary venous flow patterns. Journal of the American Society of Echocardiography , 4(5), 457-464.

INTRAOPERATIVE VENTILATOR-INDUCED RIGHT-TO-LEFT INTRACARDIAC SHUNT
Jaffe, R. A., Pinto, F. J., Schnittger, I., & BROCKUTNE, J. G. (1991). INTRAOPERATIVE VENTILATOR-INDUCED RIGHT-TO-LEFT INTRACARDIAC SHUNT. ANESTHESIOLOGY, 75(1), 153-155.

FREQUENCY AND MECHANISM OF BRADYCARDIA IN CARDIAC TRANSPLANT RECIPIENTS AND NEED FOR PACEMAKERS
Dibiase, A., Tse, T. M., Schnittger, I., Wexler, L., Stinson, E. B., & Valantine, H. A. (1991). FREQUENCY AND MECHANISM OF BRADYCARDIA IN CARDIAC TRANSPLANT RECIPIENTS AND NEED FOR PACEMAKERS. AMERICAN JOURNAL OF CARDIOLOGY, 67(16), 1385-1389.

ENHANCED DETECTION OF INTRACARDIAC SOURCES OF CEREBRAL EMBOLI BY TRANSESOPHAGEAL ECHOCARDIOGRAPHY
Lee, R. J., BARTZOKIS, T., YEOH, T. K., GROGIN, H. R., Choi, D., & Schnittger, I. (1991). ENHANCED DETECTION OF INTRACARDIAC SOURCES OF CEREBRAL EMBOLI BY TRANSESOPHAGEAL ECHOCARDIOGRAPHY. STROKE, 22(6), 734-739.

HEPATIC VENOUS FLOW ASSESSED BY TRANSESOPHAGEAL ECHOCARDIOGRAPHY
Pinto, F. J., Wranne, B., STGOAR, F. G., Schnittger, I., & Popp, R. L. (1991). HEPATIC VENOUS FLOW ASSESSED BY TRANSESOPHAGEAL ECHOCARDIOGRAPHY. JOURNAL OF THE AMERICAN COLLEGE OF CARDIOLOGY, 17(7), 1493-1498.

ECHOCARDIOGRAPHIC STUDIES IN ADULTS AND CHILDREN PRESENTING WITH OBSTRUCTIVE SLEEP-APNEA OR HEAVY SNORING
Guilleminault, C., Shiomi, T., Stoohs, R., & Schnittger, I. (1991). ECHOCARDIOGRAPHIC STUDIES IN ADULTS AND CHILDREN PRESENTING WITH OBSTRUCTIVE SLEEP-APNEA OR HEAVY SNORING. INST NATL SANTE RECHERCHE MEDICALE.

LEFT-VENTRICULAR DIASTOLIC FUNCTION - DOPPLER ECHOCARDIOGRAPHIC CHANGES SOON AFTER CARDIAC TRANSPLANTATION
STGOAR, F. G., Gibbons, R., Schnittger, I., Valantine, H. A., & Popp, R. L. (1990). LEFT-VENTRICULAR DIASTOLIC FUNCTION - DOPPLER ECHOCARDIOGRAPHIC CHANGES SOON AFTER CARDIAC TRANSPLANTATION. CIRCULATION, 82(3), 872-878.

SERIAL MEASUREMENT OF INTEGRATED ULTRASONIC BACKSCATTER IN HUMAN CARDIAC ALLOGRAFTS FOR THE RECOGNITION OF ACUTE REJECTION
Masuyama, T., Valantine, H. A., Gibbons, R., Schnittger, I., & Popp, R. L. (1990). SERIAL MEASUREMENT OF INTEGRATED ULTRASONIC BACKSCATTER IN HUMAN CARDIAC ALLOGRAFTS FOR THE RECOGNITION OF ACUTE REJECTION. CIRCULATION, 81(3), 829-839.

Flow velocity acceleration in the left ventricle: a useful Doppler echocardiographic sign of hemodynamically significant mitral regurgitation.
Appleton, C. P., Hatle, L. K., Nellessen, U., Schnittger, I., & Popp, R. L. (1990). Flow velocity acceleration in the left ventricle: a useful Doppler echocardiographic sign of hemodynamically significant mitral regurgitation. Journal of the American Society of Echocardiography , 3(1), 35-45.

ULTRASONIC TISSUE CHARACTERIZATION WITH A REAL-TIME INTEGRATED BACKSCATTER IMAGING-SYSTEM IN NORMAL AND AGING HUMAN HEARTS
Masuyama, T., Nellessen, U., Schnittger, I., Tye, T. L., Haskell, W. L., & Popp, R. L. (1989). ULTRASONIC TISSUE CHARACTERIZATION WITH A REAL-TIME INTEGRATED BACKSCATTER IMAGING-SYSTEM IN NORMAL AND AGING HUMAN HEARTS. JOURNAL OF THE AMERICAN COLLEGE OF CARDIOLOGY, 14(7), 1702-1708.

TRANSESOPHAGEAL ECHOCARDIOGRAPHY - AN INTRODUCTION FOR ULTRASONOGRAPHERS
Tye, T. L., Nellessen, U., Schnittger, I., & Popp, R. (1989). TRANSESOPHAGEAL ECHOCARDIOGRAPHY - AN INTRODUCTION FOR ULTRASONOGRAPHERS. JOURNAL OF DIAGNOSTIC MEDICAL SONOGRAPHY, 5(6), 316-321.

ULTRASONIC TISSUE CHARACTERIZATION OF HUMAN HYPERTROPHIED HEARTS INVIVO WITH CARDIAC CYCLE-DEPENDENT VARIATION IN INTEGRATED BACKSCATTER
Masuyama, T., STGOAR, F. G., Tye, T. L., Oppenheim, G., Schnittger, I., & Popp, R. L. (1989). ULTRASONIC TISSUE CHARACTERIZATION OF HUMAN HYPERTROPHIED HEARTS INVIVO WITH CARDIAC CYCLE-DEPENDENT VARIATION IN INTEGRATED BACKSCATTER. CIRCULATION, 80(4), 925-934.

LONG-TERM RESULTS OF ANTITACHYCARDIA PACING IN PATIENTS WITH SUPRAVENTRICULAR TACHYCARDIA
Schnittger, I., Lee, J. T., Hargis, J., Wyndham, C. Rc., ECHT, D. S., & Griffin, J. C. (1989). LONG-TERM RESULTS OF ANTITACHYCARDIA PACING IN PATIENTS WITH SUPRAVENTRICULAR TACHYCARDIA. PACE-PACING AND CLINICAL ELECTROPHYSIOLOGY, 12(6), 936-941.

Doppler diagnosis of left ventricle to coronary sinus fistula: an unusual complication of mitral valve replacement.
YEE, G. W., NAASZ, C., Hatle, L., PIPKIN, R., & Schnittger, I. (1988). Doppler diagnosis of left ventricle to coronary sinus fistula: an unusual complication of mitral valve replacement. Journal of the American Society of Echocardiography , 1(6), 458-462.

TRANS-ESOPHAGEAL TWO-DIMENSIONAL ECHOCARDIOGRAPHY AND COLOR DOPPLER FLOW VELOCITY MAPPING IN THE EVALUATION OF CARDIAC-VALVE PROSTHESES
Nellessen, U., Schnittger, I., Appleton, C. P., Masuyama, T., Bolger, A., & Popp, R. L. (1988). TRANS-ESOPHAGEAL TWO-DIMENSIONAL ECHOCARDIOGRAPHY AND COLOR DOPPLER FLOW VELOCITY MAPPING IN THE EVALUATION OF CARDIAC-VALVE PROSTHESES. CIRCULATION, 78(4), 848-855.

DIASTOLIC MITRAL AND TRICUSPID REGURGITATION BY DOPPLER ECHOCARDIOGRAPHY IN PATIENTS WITH ATRIOVENTRICULAR-BLOCK - NEW INSIGHT INTO THE MECHANISM OF ATRIOVENTRICULAR VALVE CLOSURE
Schnittger, I., Appleton, C. P., Hatle, L. K., & Popp, R. L. (1988). DIASTOLIC MITRAL AND TRICUSPID REGURGITATION BY DOPPLER ECHOCARDIOGRAPHY IN PATIENTS WITH ATRIOVENTRICULAR-BLOCK - NEW INSIGHT INTO THE MECHANISM OF ATRIOVENTRICULAR VALVE CLOSURE. JOURNAL OF THE AMERICAN COLLEGE OF CARDIOLOGY, 11(1), 83-88.