Analysis of ambulatory electrocardiograms in 14 XXXX who experienced sudden cardiac death during monitoring.

@entity1 @entity712 @entity1165 @entity301 @entity944 @entity1540 @entity1167 @entity204
The Holter monitors of 14 @entity1 (out of 58,000 Holter recordings performed between 1978 and 1984) who experienced @entity1167 and expired during the recording period were analyzed. @entity1167 @entity1 frequently had @entity301 , @entity712 , and prolonged QTc intervals. The highest incidence of intermediately frequent @entity1540 ( @entity1540 ) occurred between 15 and 6 hours prior to @entity204 . The frequency of ventricular couplets increased toward the time of arrest. The hours with greatest frequency of @entity1165 ( @entity1165 ) were found to be the last 5 hours of life. An increasing incidence of ST-segment changes greater than 2 mm was noted throughout all of the risk periods until the third hour prior to arrest when the incidence diminished. Conversely, the incidence of lower amplitude ST-segment changes (usually elevation) increased over the final 6 hours. The mean time of @entity204 was 0228 hours +/- 5:20. In conclusion, we observed two patterns of Holter-monitored changes which usually occurred prior to @entity204 and may represent predictors of @entity944 : (1) an increasing incidence of intermediately frequent isolated @entity1540 followed by increased ventricular couplets and runs of @entity1165 ; (2) return of high amplitude ST-segment changes toward baseline. To our knowledge, the temporal relationship of the degree of ST-segment deviation to @entity944 and the time of @entity944 have not been reported in large studies of Holter-monitored @entity944 @entity1 .
