qtintervalhowtomeasureitandwhatis 系统标签: interval间期normalmeasurerepolarizationwave 333TECHNIQUESANDTECHNOLOGYEditor:HughCalkins,M.D.QTInterval:HowtoMeasureItandWhatIs“Normal”ILANGOLDENBERG,M.D.,ARTHURJ.MOSS,M.D.,andWOJCIECHZAREBA,M.D.,PH.D.FromtheCardiologyDivision,DepartmentofMedicine,UniversityofRo...
QT interval: how to measure it and what is "normal." J Cardiovasc Electrophysiol. 2006 Mar; 17:333- 6.Goldenberg I, Moss AJ, Zareba W (2006) QT interval: how to measure it and what is ``normal''. J Cardiovasc Electrophysiol 17 (3): 333-336....
How to measure the QT interval--what is normal? The QT interval extends from the beginning of the QRS complex to the end of the T wave. Since the report of Jervell and Lange-Nielsen in 1957, it has been difficult to determine whether to measure a QT or a QU interval. U waves are ...
A, Normal sinus rhythm; the Bazett formula is used to correct the QT interval for the heart rate. B, Atrial fibrillation; QT interval is calculated by taking the average of QT intervals with shortest and longest preceding R-R intervals. Pharmacokinetic Interactions With Selected QT-Prolonging ...
摘要: Discusses a study which described QTc prolongation and a larger QT dispersion in a cohort of children and adolescents with type 1 diabetes. Overview of the research design and methods; Discussion on the research findings; Interpretation of continuous glucose manitoring system readings....
Cardiac arrest due to torsades de pointes (TdP) is an uncommon but potentially catastrophic event associated with QT interval-prolonging drugs [ 1 ]. Numerous medications that may cause TdP are available for use in clinical practice, and include drugs for management of cardiovascular diseases, prima...
Ion channels, tiny pores located on the heart’s muscle, are also prone to disorders such as long QT syndrome. It is referred to as a long QT system because of how it is viewed on an electrocardiogram as a longer interval between heartbeats. It causes problems with the electrical system ...
Heart palpitations occur when methadone is combined with haloperidol, as this combination results in a prolonged QT interval over 500ms. 55μM of fluoxetine reduces the enzyme breakdown of methadone by 50%, resulting in higher levels of circulating methadone and respiratory depression [15]. ...
Although a majority of biologists are convinced that a mass extinction is underway on earth today, the human history with direct observatory data is too short to predict its future trends. At least five mass extinctions occurred during the Phanerozoic Eon, causing the rapid extinction of at least...
What Causes Some Patients with Drug-Induced QT Interval Prolongation to Develop Torsades de Pointes but Not Others? The Elusive Missing Link: