THERAPEUTIC CLASS
Dynamic Changes in the ST-T Segment During Sleep in Ischemic Heart Disease
The electrocardiographic pattern during sleep was recorded in 140 patients with chronic ischemic heart disease by the Holter continuous recording system. Among the 97 patients who had fixed abnormal ST-T changes during the day, the severity of the pathologic pattern
decreased during sleep in 39, remained unchanged in 35 and became more marked in 23 patients. The deterioration of ST-T changes in the latter group lasted for several hours and only rarely was accompanied by chest pain that awakened the patient.
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