老年者の心電圖に關する研究(第1報) : 老年者異常心電圖頻度
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概要
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Electrocardiographic studies were performed on 918 aged persons who were admitted to the Yokufukai (old people's home), most of them were over 60 years old. The frequencies of appearance of abnormal findings were discussed in relation to their age. Although the positive number of subjects of this study were 918,as mentioned above, the relative number of cases that were made the subjects of these statistics were 1110,since such person as has been observed during the period covering two decades, was counted as two cases. Pathological findings included all abnormalities such as prolongation of the P-Q interval, prolongation of the Q-T interval, extrasystole, inverted T wave or depression of RS-T segment or abnormal RS-T segment and T wave, bundle branch block, auricular fibrillation and myocardial infarction, except low voltage. However, detailed study was not attempted in S-A blocks and A-V blocks, because of their rarity.The results obtained were as follows : 1) Abnormal patterns were found in 611 out of 1110 (55.1%), i. e., more than half of the total cases. It has also been made clear that the older the subjects, the oftener the frequencies of the abnormal electrocardiograms come out.2) The incidence of extrasystole was 14.4% (160 out of 1110 cases), in that supra-ventricular extrasystole was 9.8% and ventricular extrasystole was 4.5%, the former being much more frequently seen than the latter. There was a close correlation between the frequency of extrasystole and the age.3) The prologation of Q-T interval (by formula of Hegglin and Holzmann) was encountered in 220 out of 1110 cases (19.8%). Similarly its incidence paralleled with the increase of age.4) The prolongation of P-Q interval was found in 37 out of 1110 cases (3.3%). Its relationship to the age was also confirmed.5) The number of cases with bundle branch block was 56 (5.0%), 4.5% of which was the right B. B. B. and 0.5% was the left B. B. B.. Frequencies of these abnormalities were higher in older age groups.6) The number of those with isolated inversion of the T wave amounted to 184 cases (16.5%). No evident correlationship between this abnormality and the years of age was confirmed.7) The number of those with isolated depression of the RS-T segment amounted to 58 cases (5.2%). Its frequency increase with increase in age.8) The number of those with the abnormal RS-T segment and T wave amounted to 203 cases (18.3%). The frequency evidently paralleled with years of age.9) The number of cases with auricular fibrillation was 23 (2.1%) and that with myocardial infarction 34 (3.1%), their frequencies being higher in older age grops.
- 社団法人日本循環器学会の論文
- 1956-05-20
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関連論文
- 老年者の心電圖に關する研究(第3報) : 老年者異常心電圖の豫後
- 老年者の心電圖に關する研究(第2報) : 老年者正常心電圖の悪化率に就いて
- 老年者の心電圖に關する研究(第1報) : 老年者異常心電圖頻度