The QT Interval

The QT Interval

The QT Interval

Length: 56:35

Add to Cart



This tutorial seeks to equip the learner with the ability to accurately and confidently measure the QT interval and confirm or refute the computer-derived QTc value. Six pearls will be provided enabling a robust QT/QTc interpretation. Assessing not only the length of repolarization (i.e. the QT interval) but also the look of repolarization (i.e. the T and U wave morphology) will be emphasized in order to distinguish normal U waves from pathological T waves. When and how to evaluate further for possible QT-related pathology will be detailed and the importance of respecting the potentially life threatening scenario that occurs when an individual crosses the “QTc > 500 ms line” will be made crystal clear. 


  • Assemble the skills necessary to accurately assess the QT interval and confirm the computer-derived QTc
  • Examine six pearls to help avoid QTc miscues
  • Identify the QTc cut-off values that warrant further investigation


Michael J. Ackerman, M.D., Ph.D

Windland Smith Rice Cardiovascular Genomics Research Professor
Professor of Medicine, Pediatrics, and Pharmacology
Director, Long QT Syndrome/Genetic Heart Rhythm Clinic
Director, Windland Smith Rice Sudden Death Genomics Laboratory
President, Sudden Arrhythmia Death Syndromes (SADS) Foundation
Division of Cardiovascular Diseases Pediatrics
Mayo Clinic, Rochester, MN


$40 - Streaming Video

$50 - Streaming Video and DVD

Back to top