News | August 11, 2009

T-Wave Morphology Opens New Door to Cardiovascular Mortality Prognosis

August 11, 2009 – New research reveals T-wave morphology parameters contain predictive value for mortality in the general population, independent of other clinical risk factors, according to a study published in the August issue of the HeartRhythm Journal, the official journal of the Heart Rhythm Society.

The study indicates T-wave morphology parameters may allow healthcare professionals to better assess arrhythmia vulnerability in patients, and the prognostic value is uniquely related to cardiovascular mortality and seems to be gender specific. The study, led by Kimmo Porthan, M.D., department of cardiology at Helsinki University Central Hospital in Finland, aims to equip health professionals with a dependable prognosis tool that has never been available through traditional electrocardiographic QT intervals. The study was the largest of its kind and conducted by assessing 5,917 adults participating in the Finnish population-based Health 2000 Study.

“The study shows that, unlike ECG QT intervals, T-wave morphology parameters contain predictive value for mortality in the general population,” said Dr. Porthan. “The study results deepen our existing knowledge about the predictive value of several ECG repolarization parameters and will potentially help plan future clinical trials assessing cardiac repolarization.”

In this large, population-based prospective study, ECG T-wave morphology parameters, but not heart rate-corrected QT interval, provide independent prognostic information specifically on cardiovascular mortality. Of the 335 deaths that occurred between the start of the study and a mean follow-up of nearly six years, 131 were cardiovascular deaths. Additionally, T-wave morphology parameters show gender specificity in their performance, suggesting that T-wave morphology parameters should be assessed gender specifically in order for clinical risk indicators to be as precise as possible.

T-wave morphology parameters measure abnormalities during the ventricular repolarization phase and are potentially interrelated with arrhythmia vulnerability. As researchers learn more, T-wave morphology parameters may eventually help health professionals select specific treatment strategies.

For more information: www.heartrhythmjournal.com

Related Content

ECG Study of NBA Players Shows Need for Sport-Specific Normative Data and Guidelines
News | ECG| December 08, 2017
Cardiologists at NewYork-Presbyterian/Columbia University Irving Medical Center compared electrocardiographic findings...
HeartSciences Announces CE Mark and European Launch of MyoVista High Sensitivity ECG

Just as a Doppler radar color image shows the energy of a storm, MyoVista provides physicians a detailed visual image of the energy distribution during the cardiac cycle.

News | ECG| August 22, 2017
HeartSciences announced the European launch of the MyoVista high sensitivity electrocardiograph (hsECG) Testing Device...
AUM Cardiovascular Receives FDA Approval for CADence ECG Device
Technology | ECG| August 08, 2017
AUM Cardiovascular announced it has received clearance from the U.S. Food and Drug Administration (FDA) for CADence, a...
More Than 20 Percent of Low-Risk Patients Receive Annual ECG
News | ECG| July 20, 2017
July 20, 2017 — More than one in five Ontario patients receive an ...
Heart Test Laboratories, HTL, MyoVista ECG, common stock offering
News | ECG| January 31, 2017
Heart Test Laboratories Inc. (HTL) has successfully raised $12 million by way of a Common Stock private placement...
AirStrip One, ECG management, web client, U.S. clearance
Technology | ECG| October 11, 2016
The U.S. Food and Drug Administration (FDA) has issued 510(K) Class II clearance to a web client for the AirStrip One...
Carestream, Vue Motion universal viewer, ECG waveforms, diagnostic reading, FDA clearance

Image courtesy of Carestream Health

Technology | ECG| November 20, 2015
Carestream has obtained U.S. Food and Drug Administration (FDA) clearance for diagnostic reading of electrocardiogram (...
CardioSecur mobile ECG, 22-lead, 360 degree view of the heart, CardioSecur Pro

Image courtesy of CardioSecur

Technology | ECG| October 08, 2015
Personal MedSystems introduced the first and only 22-lead mobile electrocardiogram (ECG) system, CardioSecur, at the...
Mortara, ELI 280, TouchScreen ECG, ECG advances, new ECG technology

The Mortara Eli 280 is part of a new generation of ECG systems that integrate touchscreen monitors to improve workflow.

Feature | ECG| September 16, 2015 | Dave Fornell
The resting electrocardiogram (ECG) has been us
zebrafish, iWorx Systems Inc., ZS-200 Zebrafish ECG System, cardiac research
Technology | ECG| August 13, 2015
iWorx Systems Inc., developer of advanced physiology teaching and research instruments and software, has introduced a...
Overlay Init