- American Heart Association
- American Academy of Pediatrics
- American Society of Echocardiography
- Dallas County Medical Society
- Society of Pediatric Echocardiography
Matthew Lemler, M.D.
- Pediatrics - Cardiology
- Acute Care Cardiology
- Cardiac Imaging
Biography
Matthew Lemler, M.D., is a Professor in the Department of Pediatrics at UT Southwestern Medical Center. He specializes in acute care cardiology, cardiac imaging, and single ventricle lesions.
Dr. Lemler earned his medical degree at the University of Texas Medical Branch at Galveston. He completed a residency in pediatrics at Children’s Health/UT Southwestern and gained advanced training through fellowships in pediatric cardiology and pediatric echocardiography at Children’s Hospital of Denver/University of Colorado.
Certified by the American Board of Pediatrics, he joined the UT Southwestern faculty in 1996.
Dr. Lemler is the Clinical Director of Pediatric Cardiology and the Director of Pediatric Acute Care Cardiology at UT Southwestern and Children’s Medical Center Dallas. He is a member of numerous hospital and university committees, including the C-8 Collaborative Leadership Committee, the Multidisciplinary Clinical Operation Committee, and the Event Prevention Governance Committee.
In addition, he is an active member of several professional societies, including the American Heart Association, the American Academy of Pediatrics, and the Society of Pediatric Echocardiography. He also serves as an ad-hoc reviewer for journals such as Circulation, the Journal of Pediatric Infectious Disease, and Pediatric Nephrology.
A prolific researcher and author of numerous peer-reviewed articles, Dr. Lemler focuses his research on aortic stenosis, the Fontan procedure, and noninvasive imaging. His recent publications include a chapter in Echocardiography in Pediatric and Congenital Heart Disease: From Fetus to Adult.
In 2014-2021, Dr. Lemler was ranked a Best Pediatric Specialist by D Magazine.
Education & Training
- Medical School - University of Texas Medical Branch at Galveston (1985-1989)
- Fellowship - Children's Hospital of Denver (1992-1996), Pediatric Cardiology
- Internship - Children's Medical Center Dallas (1989-1990), Pediatrics
- Residency - Children's Medical Center Dallas (1990-1992), Pediatrics
Professional Associations & Affiliations
Honors & Awards
- D Magazine Best Doctor 2022-2025
- Castle Connolly Best Doctors in America 2007-2022, Regional Castle Connolly
- Best Pediatric Specialist 2014-2021, D Magazine
- Texas Super Doctors 2009-2021, Texas Monthly Magazine
- Top Doctors 2012-2015, U.S. News & World Report
- 2nd Place, Young Investigator Award 1999, American Academy of Pediatrics
Books & Publications
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Books
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Anomalies of the Right Ventricular Outflow Tract and Pulmonary Valve in Lai WW, Mertens LL, Geva T, Cohen MS, eds. Echocardiography in Pediatric and Congenital Heart Disease: From Fetus to Adult. 2nd ed.
Lemler MS, Ramaciotti C (2016), Oxford: Wiley-Blackwell. -
Anomalies of the right ventricular outflow tract and pulmonary valve in Lai WW, Cohen MS, Geva T, Mertens L eds. Echocardiography in pediatric and congenital heart disease: From the fetus to the adult
Lemler MS, Ramaciotti C (2016), Oxford Blackwell Publishing -
Anomalies of the right ventricular outflow tract and pulmonary valve in Lai WW, Cohen MS, Geva T, Mertens L eds. Echocardiography in pediatric and congenital heart disease: From the fetus to the adult
Lemler MS, Thankavel P, Ramaciotti C (2022), Oxford Blackwell Publishing
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Anomalies of the Right Ventricular Outflow Tract and Pulmonary Valve in Lai WW, Mertens LL, Geva T, Cohen MS, eds. Echocardiography in Pediatric and Congenital Heart Disease: From Fetus to Adult. 2nd ed.
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Publications
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Preoperative transcatheter conduction system mapping to avoid conduction injury during complex congenital heart surgery
Ramdat Misier NL, Andersen ND, Werner D, Weinreb SJ, Lemler MS, Fares M, Sharma K, Kenny MD, de Groot NM, Nguyen HH JTCVS Techniques 2026 Feb 35 -
Staged right ventricular recruitment of unbalanced atrioventricular septal defect
Islam IS, Laird P, Fares M, Lemler MS, Sebastian R, Jaquiss R, Andersen ND JTCVS Techniques 2025 Aug 32 108-110 -
A novel experience with remission of severe, recalcitrant fontan-associated protein-losing enteropathy: a case report
Tindel KR, Lemler M, Patel SS Cardiology in the Young 2025 Jul 35 1504-1506 -
Vein of Galen Aneurysmal Malformation with Anomalous Right Superior Vena Cava to the Left Atrium Leading to Atypical Clinical and Echocardiographic Findings
Hoda M, Lemler M, Cory M Pediatric Cardiology 2023 Jan 44 254-259 -
HeartWatch: Implementing a Pediatric Heart Center Program to Prevent Cardiac Arrests Outside the ICU
Birely A, Avula S, Butts RJ, Wolovits JS, Lemler MS, Hoffman OL Pediatric Quality and Safety 2022 Nov 7 E617 -
Evolution of Interventricular Septal Hematoma: Echocardiographic Diagnosis
Akam-Venkata J, Lemler M, Pirolli T, Thankavel PP, Ikemba C CASE 2021 Feb 5 39-42 -
Anomalies of the Right Ventricular Outflow Tract and Pulmonary Valve
Lemler MS, Thankavel PP, Ramaciotti C 2021 Jan 321-339 -
Sinus of Valsalva Aneurysm in a Patient With Mosaic Trisomy 13: Case Report and Brief Review of the Literature
Ghawi H, Engelhardt K, Dixon K, Thankaval P, Ramaciotti C, Lemler MS, Guleserian KJ World Journal for Pediatric and Congenital Heart Surgery 2020 Jul 11 NP1-NP6 -
Two-dimensional systolic speckle tracking echocardiography provides a noninvasive aid in the identification of acute pediatric heart transplant rejection
Engelhardt K, Das B, Sorensen M, Malik S, Zellers T, Lemler M Echocardiography 2019 Oct 36 1876-1883 -
Use of Amplatzer Vascular Plugs for the treatment of combined extralobar and intralobar pulmonary sequestration in a 5-year-old child
Herbert CE, Reddy SR, Lemler MS Cardiology in the Young 2016 Oct 26 1441-1444 -
Health-Related Quality of Life and Functional Status Are Associated with Cardiac Status and Clinical Outcome in Children with Cardiomyopathy
Sleeper LA, Towbin JA, Colan SD, Hsu D, Orav EJ, Lemler MS, Clunie S, Messere J, Fountain D, Miller TL, Wilkinson JD, Lipshultz SE Journal of Pediatrics 2016 Mar 170 173-180.e4 -
Anomalies of the Right Ventricular Outflow Tract and Pulmonary Valve
Lemler MS, Ramaciotti C 2016 Jan 279-296 -
Aspirin resistance in single-ventricle physiology: Aspirin prophylaxis is not adequate to inhibit platelets in the immediate postoperative period
Mir A, Frank S, Journeycake J, Wolovitis J, Guleserian K, Heistein L, Lemler M Annals of Thoracic Surgery 2015 Jun 99 2158-2164 -
Utility and importance of new echocardiographic screening methods in diagnosis of anomalous coronary origins in the pediatric population: Assessment of quality improvement
Thankavel PP, Lemler MS, Ramaciotti C Pediatric Cardiology 2015 Jan 36 120-125 -
Subclinical cardiotoxicity in childhood cancer survivors exposed to very low dose anthracycline therapy
Leger K, Slone T, Lemler M, Leonard D, Cochran C, Bowman WP, Bashore L, Winick N Pediatric Blood and Cancer 2015 Jan 62 123-127 -
Unruptured sinus of Valsalva aneurysm in a neonate with hypoplastic left heart syndrome: Echocardiographic diagnosis and features
Thankavel PP, Lemler MS, Ramaciotti C Echocardiography 2014 Mar 31 E85-E87 -
Anomalous left main coronary artery origin from the right sinus of valsalva: A novel echocardiographic screening method
Thankavel PP, Balakrishnan PL, Lemler MS, Ramaciotti C Pediatric Cardiology 2013 Apr 34 842-846 -
Left-dominant double aortic arch in critical pulmonary stenosis and ventricular septal defect
Thankavel PP, Brown PS, Lemler MS Pediatric Cardiology 2012 Dec 33 1469-1471 -
Hypertrophic cardiomyopathy in a neonate associated with nemaline myopathy
Mir A, Lemler M, Ramaciotti C, Blalock S, Ikemba C Congenital Heart Disease 2012 Jul 7 E37-E41 -
A neonate with left congenital diaphragmatic hernia and transient retrograde flow in the aortic arch
Thankavel PP, Ramaciotti C, Lemler MS Pediatric Cardiology 2011 Dec 32 1207-1208 -
Diagnosing a patent foramen ovale in children: Is transesophageal echocardiography necessary?
Hubail Z, Lemler M, Ramaciotti C, Moore J, Ikemba C Stroke 2011 Jan 42 98-101 -
Oxygen supplementation is helpful for the echocardiographic detection of anomalous left coronary artery from the pulmonary artery
Blanco VM, Blalock SE, Ramaciotti C, Lemler M, Heistein L, Moore J, Ikemba C Journal of the American Society of Echocardiography 2010 Oct 23 1099-1102 -
Relation of right ventricular pacing site to left ventricular mechanical synchrony
Verma AJ, Lemler MS, Zeltser IJ, Scott WA American Journal of Cardiology 2010 Sep 106 806-809 -
Prenatal closure of the ductus arteriosus and maternal ingestion of anthocyanins
Kapadia V, Embers D, Wells E, Lemler M, Rosenfeld CR Journal of Perinatology 2010 Apr 30 291-294 -
Anomalies of the Right Ventricular Outflow Tract and Pulmonary Valve
Lemler MS, Ramaciotti C 2009 Aug 249-263 -
Acute adaptation to volume unloading of the functional single ventricle in children undergoing bidirectional Glenn anastomosis
Ikemba C, Lemler M, Roi L, Su J, Bezold L, Chang A, McKenzie ED, Fraser C, Andropoulus D, Eidem BW Congenital Heart Disease 2009 Mar 4 76-80 -
Echocardiography, not chest radiography, for evaluation of cannula placement during pediatric extracorporeal membrane oxygenation
Thomas TH, Price R, Ramaciotti C, Thompson M, Megison S, Lemler MS Pediatric Critical Care Medicine 2009 Jan 10 56-59 -
Aspirin resistance in children with heart disease at risk for thromboembolism: Prevalence and possible mechanisms
Heistein LC, Scott WA, Zellers TM, Fixler DE, Ramaciotti C, Journeycake JM, Lemler MS Pediatric Cardiology 2008 Mar 29 285-291 -
Anomalous systemic arterial supply to the lungs: An unusual etiology for cardiomegaly
Hubail Z, Eapen R, Lemler M Pediatric Cardiology 2006 Oct 27 608-611 -
Left Ventricular Function and Response to Enalapril in Patients With Duchenne Muscular Dystrophy During the Second Decade of Life
Ramaciotti C, Heistein LC, Coursey M, Lemler MS, Eapen RS, Iannaccone ST, Scott WA American Journal of Cardiology 2006 Sep 98 825-827 -
The extracardiac lateral tunnel Fontan, constructed with bovine pericardium: Comparison with the extracardiac conduit Fontan
Lemler MS, Ramaciotti C, Stromberg D, Scott WA, Leonard SR American heart journal 2006 Apr 151 928-933 -
Chloral hydrate sedation for pediatric echocardiography: Physiologic responses, adverse events, and risk factors
Heistein LC, Ramaciotti C, Scott WA, Coursey M, Sheeran PW, Lemler MS Pediatrics 2006 Mar 117 e434-e441 -
Trisomy 21 and congenital heart disease: Effect of timing of initial echocardiogram
Malik S, Lemler MS, Fixler DE, Ramaciotti C Clinical Pediatrics 2005 Jan 44 39-42 -
Echocardiographic characteristics of perimembranous ventricular septal defects associated with aortic regurgitation
Eapen RS, Lemler MS, Scott WA, Ramaciotti C Journal of the American Society of Echocardiography 2003 Mar 16 209-213 -
Echocardiographic diagnosis of anomalous drainage of the superior vena cava into the left atrium
Kahwaji I, Ramaciotti C, Nikaidoh H, Leonard S, Harris K, Lemler M Circulation 2003 Mar 107 1560-1561 -
Usefulness of external counterpulsation early postoperatively after the Fontan procedure in children
Ma W, Lemler MS, Nikaidoh H, Leonard SR, Shang-Feaster GY, Giroir BP, Stromberg D American Journal of Cardiology 2002 Nov 90 1029-1031 -
Comprehensive assessment of patent ductus arteriosus by echocardiography before transcatheter closure
Ramaciotti C, Lemler MS, Moake L, Zellers TM Journal of the American Society of Echocardiography 2002 Oct 15 1154-1159 -
Sedation for pediatric echocardiography: Evaluation of preprocedure fasting guidelines
Ghaffar S, Haverland C, Ramaciotti C, Scott WA, Lemler MS Journal of the American Society of Echocardiography 2002 Sep 15 980-983 -
Fenestration improves clinical outcome of the Fontan procedure: A prospective, randomized study
Lemler MS, Scott WA, Leonard SR, Stromberg D, Ramaciotti C Circulation 2002 Jan 105 207-212 -
Assessment of cardiac function in adolescents with duchenne muscular dystrophy: Importance of neurohormones
Ramaciotti C, Scott WA, Lemler MS, Haverland C, Iannaccone ST Journal of child neurology 2002 17 191-194 -
Pressure recovery in pediatric patients with congenital aortic stenosis: Correlation with doppler/catheter pressure discrepancies
Spodick DH, Lemler MS, Carron H, Ramaciotti C Cardiovascular Reviews and Reports 2001 22 349-352 -
Serial echocardiographic changes in a child with hypereosinophilia syndrome
Eapen RS, Lemler MS, Ramaciotti C Pediatric Cardiology 2001 22 426 -
Coarctation index: Identification of recurrent coarctation in infants with hypoplastic left heart syndrome after the Norwood procedure
Lemler MS, Zellers TM, Harris KA, Ramaciotti C American Journal of Cardiology 2000 Sep 86 697-699 -
Myocyte cytoskeletal disorganization and right heart failure in hypoxia-induced neonatal pulmonary hypertension
Lemler MS, Bies RD, Frid MG, Sastravaha A, Zisman LS, Bohlmeyer T, Gerdes AM, Reeves JT, Stenmark KR American Journal of Physiology - Heart and Circulatory Physiology 2000 279 H1365-H1376 -
Insights into catheter/Doppler discrepancies in congenital aortic stenosis
Lemler MS, Valdes-Cruz LM, Shandas RS, Cape EG American Journal of Cardiology 1999 May 83 1447-1450 -
Neonatal cardiology casebook
Newfeld E, Heragu NP, Ramaciotti C, Leonard S, Kao JM, Lemler MS Journal of Perinatology 1999 Mar 19 159-161 -
Extravascular Doppler measurement of cardiac output in infants and children after operations for congenital heart disease
Lequier LL, Leonard SR, Nikaidoh H, Lemler MS, Ramaciotti C Journal of Thoracic and Cardiovascular Surgery 1999 117 1223-1225 -
Neonatal supraventricular tachycardia: Predictors of successful treatment withdrawal
Lemler MS, Schaffer MS American Heart Journal 1997 Jan 133 130-131 -
Evaluation of Temporary Atrial Pacing Leads
Scott WA, Lemler M, Farley L, Zehr R Pacing and Clinical Electrophysiology 1993 Sep 16 1789-1792
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Preoperative transcatheter conduction system mapping to avoid conduction injury during complex congenital heart surgery
Research
- Aortic stenosis
- Fontan procedure
- Non-invasive imaging
Clinical Focus
- Acute Care Cardiology
- Cardiac Imaging
- Single ventricle lesions including palliation with the Fontan procedure
Children's Medical Center of Dallas
1935 Medical District DriveDallas, Texas 75235 214-730-5437 Directions to Children's Medical Center of Dallas at Children's Medical Center of Dallas, Dallas