Marital Status. Fun Facts. James Crumb. Statistics for all 110 People named James Crumb. $56k. Income average. Our wealth data indicates income average is $56k. 67%. Married. 66.7% of these people are married, and 33.3% are single or divorced. 59 yrs. Average age. 22% are in their 40s, while the average age is 59.
QT Prolongation. Recognition of a prolonged QT interval is complicated by the problems inherent in identification of T wave end and the inaccuracy of Bazlet's formula for correcting for heart rate. It may be preferable to judge the QT interval by changes in length or when it exceeds 50% of the R-R interval.T prolongation can be due to rare hereditary abnormalities, to type Ia anti-arrhythmics such as quinidine, and to hypocalcemia or hypomagnesia. The importance of recognizing prolonged QT interval is that it is associated with PVC's, ventricular tachycardia and fibrillation (ie., vulnerability to lethal arrhythmia).
Prolongation of the QT interval on the ECG is also associated with arrhythmia risk and sudden cardiac death. Congenital long QT syndrome (LQTS) comprises a group of arrhythmia disorders, arising from cardiac channelopathies in both sodium and potassium channels.