Correlation of electrocardiographic and echocardiographic changes in XXXX .

@entity1 @entity296 @entity2294 @entity4561 @entity453
To determine whether changes in ECGs correlated with abnormalities in echocardiograms in @entity1 with acute and convalescent @entity4561 , we undertook a retrospective analysis of 44 @entity1 examined during the first 2 weeks of illness and followed for at least 6 months, 31 for longer than 1 year. We analyzed 360 ECGs, 282 echocardiograms, and clinical status. Results of echocardiography showed 18 @entity1 with @entity296 , @entity2294 , and/or @entity453 (41%); 26 @entity1 had no abnormalities. All 18 of the former and all but 10 of the latter had abnormalities on serial ECGs that normalized on recovery. Thirty-four of 44 @entity1 (77%) had ECG abnormalities. These abnormalities were most prevalent in the first month: 68% appeared in the first week, about 50% in the second to fourth weeks, 16% at 2 months, and 10% at 3 months. The type of ECG change did not predict the type of echocardiographic abnormality, except that low voltage of QRS was found only with @entity2294 . The most frequent early changes were in T waves, which were flattened in 28 (64%). Later 12 @entity1 had high, peaked, abnormal T waves. Prolonged PR interval occurred in 13 @entity1 , seven of whom had echocardiographic abnormalities. Of six with prolonged QT interval, four had abnormal echocardiograms. The possibility of having an abnormal echocardiogram increased with the number of ECG changes: from 0 risk with no change to 37% for one, 47% for two, 80% for three, and 100% for four changes in serial ECGs. Both ECGs and echocardiograms are important in early and subsequent evaluation of these @entity1 . Inasmuch as the ECGs showed abnormalities in 77% whereas echocardiograms showed changes in 41%, we believe that serial ECGs in comparison with prior tracings offer the more sensitive noninvasive indicator of pancarditis in young @entity1 during acute and convalescent @entity4561 .
