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Dr. Mahony received her S.B. from the Massachusetts Institute of Technology (MIT) and her M.D. from Stanford University. She completed residency training in pediatrics at Stanford University Medical Center, followed by fellowship training in cardiology at the Cardiovascular Research Institutes/University of California, San Francisco.

She joined the faculty of the University of Texas Southwestern Medical Center in 1985, and is currently Professor of Pediatrics. Dr. Mahony has chaired the NHLBI-funded Pediatric Heart Network since 2001.


Medical School
Stanford University School of Medicine (1975)
Stanford University Hospital (1978), Pediatrics
University of California at San Francisco (1981), Pediatric Cardiology
Research Fellowship
University of California at San Francisco (1981), Pediatric Cardiology

Research Interest

  • Congenital heart disease
  • Congestive heart failure
  • Dilated aorta
  • Marfan syndrome
  • Quality of life in pediatric patients with heart disease


Featured Publications LegendFeatured Publications

International Society for Heart and Lung Transplantation: Practice guidelines for management of heart failure in children.
Rosenthal D, Chrisant MR, Edens E, Mahony L, Canter C, Colan S, Dubin A, Lamour J, Ross R, Shaddy R, Addonizio L, Beerman L, Berger S, Bernstein D, Blume E, Boucek M, Checchia P, Dipchand A, Drummond-Webb J, Fricker J, Friedman R, Hallowell S, Jaquiss R, Mital S, Pahl E, Pearce FB, Pearce B, Rhodes L, Rotondo K, Rusconi P, Scheel J, Pal Singh T, Towbin J J. Heart Lung Transplant. 2004 Dec 23 12 1313-33
Posttraumatic stress disorder in children after cardiac surgery.
Connolly D, McClowry S, Hayman L, Mahony L, Artman M J. Pediatr. 2004 Apr 144 4 480-4
Cardiopulmonary bypass to repair an atrial septal defect does not affect cognitive function in children.
Stavinoha PL, Fixler DE, Mahony L Circulation 2003 Jun 107 21 2722-5
The Pediatric Randomized Carvedilol Trial in Children with Heart Failure: rationale and design.
Shaddy RE, Curtin EL, Sower B, Tani LY, Burr J, LaSalle B, Boucek MM, Mahony L, Hsu DT, Pahl E, Burch GH, Schlencker-Herceg R Am. Heart J. 2002 Sep 144 3 383-9
Perinatal renal ischemia resulting in hypertensive cardiomyopathy.
Saland JM, Mahony L, Baum M Pediatrics 2001 Jan 107 1 185-6
Is captopril useful in decreasing pleural drainage in children after modified Fontan operation?
Heragu N, Mahony L Am. J. Cardiol. 1999 Nov 84 9 1109-12, A10
Usefulness of Doppler echocardiography in diagnosing right ventricular coronary arterial communications in patients with pulmonary atresia and intact ventricular septum and comparison with angiography.
Garcia JA, Zellers TM, Weinstein EM, Mahony L Am. J. Cardiol. 1998 Jan 81 1 103-4
Enalapril does not enhance exercise capacity in patients after Fontan procedure.
Kouatli AA, Garcia JA, Zellers TM, Weinstein EM, Mahony L Circulation 1997 Sep 96 5 1507-12
Calcium homeostasis and control of contractility in the developing heart.
Mahony L Semin. Perinatol. 1996 Dec 20 6 510-9
Regulation of intracellular calcium concentration in the developing heart.
Mahony L Cardiovasc. Res. 1996 Feb 31 Spec No E61-7


Featured Books Legend Featured Books

Honors & Awards

  • Best Pediatric Specialists/Doctors in Dallas
    D Magazine (2010) (2016-2018)
  • US News and World Report
    Top US Doctor (2011)
  • Core Clerkship Teaching Award
    Medical Student Teaching (2009)
  • William J. Rashkind Memorial Lecturer
    Cardiology 2009 Meeting, sponsored by the Children's Hospital of Philadelphia (2009)
  • Meritorious Achievement Award
    American Heart Association (2007)
  • Texas Super Doctors
    Texas Monthly Magazine (2005-2018)
  • Walter M. Kirkendall, MD, American Heart Association
    Scientist/Educator Volunteer of the Year (1995)

Professional Associations/Affiliations

  • Protocol Chair, Pediatric Heart Disease Clinical Research Network (NIH) (2011-2019)
  • Editorial Board, Circulation (2004-2009)
  • Chair, Pediatric Heart Disease Clinical Research Network (NIH) (2001-2010)
  • Dallas County Medical Society (1985-2019)
  • Texas Medical Association (1985-2019)
  • American Academy of Pediatrics (1982-2011)
  • Fellow, American Heart Association (1980-2019)