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- W178044562 abstract "To clarify the correlation between the configuration of the left ventriculogram and serial ECG changes, 16 patients with hypertrophic cardiomyopathy (HCM) associated with asymmetrical septal hypertrophy were examined. In the right oblique view at end-diastole, the configurations were classified by form as round (R, n = 7), round with inferior concavity (R-i, n = 2), spade (S, n = 4) and spade with inferior concavity (S-i, n = 3). These patients were divided into two groups according to serial T wave changes; nine with marked changes (A group) and seven without (B group). Furthermore, group A was separated into two subgroups; seven with increasing negativity or appearance of the negative T wave (A-1 group) and two with decreasing negativity or disappearance of the negative T wave (A-2 group). The results were as follows: Five (71%) of the seven cases with the S and S-i form belonged to the A group. Their apical walls showed marked hypertrophy and their ECGs showed deep negative T waves. The other two cases (29%) belonged to the B group, and did not show marked apical hypertrophy. Four (44%) of the nine cases with the R and R-i form belonged to the A group. They showed mild apical hypertrophy, and initially did not show deep negative T waves. A deep negative T wave appeared in three during observation. The initial depth of the maximum negativity of T wave correlated significantly with apical wall thickness, SV1 + RV5, and the total depth of the negative T wave in precordial leads. During the observation, the A-1 group showed a marked increase of SV1 + RV5. The A-2 group showed a decrease of SV1 + RV5. In conclusion, HCM with deep negative T waves has a tendency to present wide changes in the T wave during serial ECG observation and to show apical hypertrophy on left ventriculography. Cases of increasing negativity of the T wave showed marked increase in voltage of SV1 + RV5. However, cases of decreasing negativity of the T wave showed decreasing SV1 + RV5. These ECG changes, especially the negative T wave changes are reputed to be related to apical wall thickness." @default.
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- W178044562 date "1986-06-01" @default.
- W178044562 modified "2023-09-27" @default.
- W178044562 title "[Left ventriculography and serial ECG changes in hypertrophic cardiomyopathy with special reference to the negative T wave]." @default.
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