QT interval and SIDS.

QT INTERVAL IN SIDS/Kelly, Shannon, Liberthson

If A2r, B2J, and the turbulent portion of the signal is of relatively low frequency, i.e., T2-T1, the autocorrelation appears as in figure 2b. If the two time scales are not readily apparent, as in figure 2b, T0 is the correct turbulent scale and the function's width is determined on the axis at point P. The pattern in figure 2b is differentiated from that of figure lb, which has no information...

QT interval prolongation in future SIDS victims: a polysomnographic study.

OBJECTIVE Previous data have suggested that a prolonged QTc interval during the first days of life can be associated with some cases of sudden infant death syndrome (SIDS). Analysis of heart rate variability during sleep in future SIDS victims has shown findings compatible with an imbalance in autonomic tone. We hypothesized that some future SIDS infants could have longer QTc intervals during s...

QT Interval and QT Variability

Is there a relation between SIDS and long QT syndrome?

L ong QT syndrome causes sudden unexpected death through rapid ventricular tachycardia (‘‘torsades de pointes’’) leading to ventricular fibrillation (see figs 1 and 2). 2 The postmortem examination reveals no cause for the death. These characteristics make long QT syndrome a plausible cause of sudden infant death syndrome (SIDS), and many research efforts have been made to investigate a possibl...

Changes in QT interval before and after hemodialysis

Background: Cardiovascular mortality and morbidity are high in chronic renal failure (CRF) patients. Increased dispersion of QT intervals is known to predispose to ventricular arrhythmias and sudden cardiac death. This study was conducted to assess the effect of hemodialysis (HD) on corrected QT (QTc) intervals and their dispersions (QTd) in chronic hemodialyzed patients. Methods: Fifty-eight p...