The Relationship between Spatial Velocity and Magnitude Electrocardiograms
スポンサーリンク
概要
- 論文の詳細を見る
By using an analogue computer with the X, Y and Z components of Franks lead system as inputs, spatial velocity electrocardiograms (SVECG, SV), and spatial magnitude electrocardiograms (SMECG, SM) were recorded. At the same time, utilizing a direct writing vectorcardiograph and a X-Y plotter, a correlation curve between SVECG and SMECG was traced. Thirty normal human subjects, 21 patients suffering from hypertension without cardiac involvement and 70 cases of ischemic heart disease (IHD), such as myocardial infarction, angina pectoris, and asymptomatic IHD were studied in a recumbent position before and after Msters two-step test.The SMECG of QRS of the hypertensive patients was significantly greater both before and after exericise than that of the normal group, while that of the IHD group showed a significance only after the exercise. If the peaks of QRS and T of SVECG are called ρ1, ρ2, τ1, and τ2in their respective order, the ρ2 after exercise, τ1 before and after ex-ercise, and τ2 before exercise are significantly elevated in the hypertensive patients. τ2 showed a significant increase after exercise in each group studied, while τ2 in the normal and hypertensive groups declined noticeably.SV and SM showed good positive correlation, but the correlation coefficient was poor in the IHD group and worsened after exercise. In the IHD patients, the positive group of the two-step test showed significantly poorer correlation than the negative group at ρ1. This indicates that SV is not determined by SM alone.
- International Heart Journal刊行会の論文
著者
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Hayashi Naoki
The Fourth Department Of Internal Medicine Faculty Of Medicine The University Of Tokyo And Showa Hos
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SADA Toshikatsu
Fourth Department of Internal Medicine, Faculty of Medicine, The University of Tokyo
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HAYASHI Naoki
Fourth Department of Internal Medicine, Faculty of Medicine, The University of Tokyo
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TAKEUCHI Masaya
Fourth Department of Internal Medicine, Faculty of Medicine, The University of Tokyo
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Sada Toshikatsu
Department Of Cardiology Showa General Hospital
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Takeuchi Masaya
The Fourth Department Of Internal Medicine Faculty Of Medicine The University Of Tokyo And Showa Hos
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Takeuchi Masaya
Dept. Of Intern. Med. Tokyo Univ. Branch Hosp.
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Takeuchi Masaya
Dept. Of Intern. Med. Univ. Of Tokyo
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SADA Toshikatsu
Fourth Department of Internal Medicine, Faculty of Medicine, University of Tokyo
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TAKEUCHI Masaya
Fourth Department of Internal Medicine, Faculty of Medicine, University of Tokyo
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