QRS complex recovery during one year after acute myocardial infarction.
The recovery of the ECG signs of anterior myocardial infarction has been studied in 70 patients. A significant increase in R-wave amplitude and decrease in Q-wave amplitude on 24-lead precordial mapping was observed during one year after infarction. Patients with lower initial heart rate showed a greater recovery of R- and Q-wave amplitudes, as did patients with smaller infarcts, as assessed by peak heat-stable lactate dehydrogenase (LDH).
D000328:Adult; D000368:Aged; D002986:Clinical Trials as Topic; D004311:Double-Blind Method; D004562:Electrocardiography; D006339:Heart Rate; D006801:Humans; D007770:L-Lactate Dehydrogenase / Q000097:blood; D008790:Metoprolol / Q000627:therapeutic use; D008875:Middle Aged; D009203:Myocardial Infarction / Q000188:drug therapy / Q000201:enzymology / Q000401:mortality / Q000503:physiopathology*; D011897:Random Allocation; D013997:Time Factors
D007770:L-Lactate Dehydrogenase; D008790:Metoprolol