Comparison of a new reduced lead set ECG with the standard ECG for diagnosing XXXX and @entity741 .

@entity1 @entity662 @entity4710 @entity1165 @entity63 @entity714 @entity1283 @entity713 @entity299 @entity8158 @entity591 @entity16728 @entity741 @entity11759 @entity583 @entity943
In a few @entity1 , 12-lead electrocardiograms (ECGs) derived from reduced-lead-set configurations do not match the standard ECG. Constructing an ECG from a reduced number of standard leads should minimize this problem because some of the resultant 12 leads would always include "true" standard leads. The purpose of this study was to compare the ability of a new reduced-lead-set 12-lead ECG ("interpolated" ECG) with the standard ECG to diagnose @entity943 and @entity741 . The interpolated ECG uses six standard electrode sites (limb leads plus @entity16728 and V(5)), from which the remaining four precordial leads ( @entity11759 , V(3), V(4), and V(6)) are constructed. Standard and interpolated ECGs were compared using data from 2 prospective clinical trials involving 649 @entity1 evaluated for 1) @entity662 in the emergency department ( @entity63 group, n = 509) or 2) @entity591 in the cardiac electrophysiology laboratory ( @entity943 group, n = 140). Diagnoses were identical between standard and interpolated ECGs for bundle branch and @entity714 , left @entity1283 , @entity8158 , prior inferior @entity583 ( @entity583 ), and the distinction of @entity1165 from @entity4710 with @entity713 . There was 99% agreement for prior anterior @entity583 (kappa, .935, P =.000). The percent agreement for @entity741 on the initial ECG recorded in @entity662 @entity1 in the emergency department was 99.2% (kappa, .978, P =.000). Of the 120 @entity1 who had ST events with continuous standard 12-lead ECG monitoring, 116 (97%) also had criteria for transient @entity63 with the interpolated ECG (ie, DeltaST >or= 100 microV in >or=1 lead(s) lasting >or=1 minute(s). The interpolated 12-lead ECG is comparable to the standard ECG for diagnosing multiple @entity299 , including wide-QRS-complex @entity591 and @entity741 . The advantages of this ECG method are that the standard electrode sites are familiar to clinicians and that eight of the 12 leads are "true" standard leads. Hence, QRS-axis and morphology criteria for diagnosing wide-QRS-complex @entity591 and bundle branch and @entity714 are preserved.
