慢性肺疾患の心電図およびベクトル心電図に関する研究
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概要
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It is well known that chronic obstructive pulmonary diseases cause disturbances of pulmonary circulation and right ventricular hypertrophy, and the electrocardiogram and vector-cardiogram in these diseases are considerably characteristic. It seems reasonable to predict that right ventricular hypertrophy develops in the presence of chronic pulmonary diseases. The pressent study was made on possible relation between electrocardiographic and vectorcardiographic findings and the disturbances of pulmonary ventilatory function in patients with chronic pulmonary diseases i.e., chronic pulmonary emphysema, chronic bronchitis and bronchial asthma. Materials and Methods One hundred and eighty-nine cases with chronic pulmonary diseases, 50 cases with chronic bronchitis, 90 cases with bronchial asthma, and 49 cases with chronic pulmonary emphysema were studied. Forty cases without cardiopulmonary disease were studied as controls. The chest was x-rayed and conventional twelve leads electrocardiograms and vectorcardiograms on Frank's lead system were recorded at the same time. These cases were examined as to their pulmonary ventilatory function (13.5L). Pulmonary residual volume was determined in some cases of each group with Godalt's pulmo-analyser. FEV_1 %, MVV % and RV/TLC (%) were studied. Electrocardiogram and vectorcardiogram were discussed on the basis of electrocardiographic and vectorcardiographic findings in reference to the grade of pulmonary ventilatory dysfunction. Results Electrocardiographic findings : The incidences of Pulmonary P, Gothic P and low voltage were higher in patients with chronic pulmonary emphysema than in those with chronic bronchitis and bronchial asthma. The amplitudes of P wave in II, III and aV_F was greater in patients with chronic pulmonary disease than controls, especially in cases with severe dysfunction of pulmonary ventilation. P wave higher than 0.25mV was rather frequent among the cases with severe disorders of pulmonary ventilatory function.
- 社団法人日本循環器学会の論文
- 1968-05-20