Search PubMed⌕ Search

Biomedical subjects

T Aihara

Publications and source records attributed to T Aihara.

At least 163 records · Page 9Linked to original sources
PubMed1983

[Clinical manifestations, therapeutic methods and prognosis of patients with ischemic cardiomyopathy].

In view of the increased prevalence of so-called "ischemic cardiomyopathy" ( Burch ) in Japan, we attempted to clarify the clinical manifestations of this condition and to investigate the medical treatment in comparison with the surgical therapy. Eighteen patients (17 males and one female) were identified as having "ischemic cardiomyopathy" according to the following criteria: These include (i) an ejection fraction of 30% or less with asynergy on all segments of AHA classification, (ii) significant coronary stenosis (75% or more) of one or more major coronary branches, and (iii) no other coexisting lesion, such as primary valvular disease or congenital heart disease. In the history, distinct myocardial infarction or angina pectoris was observed in 10 cases (56%), and in the remaining eight cases (44%) only symptoms of cardiac failure was shown. On the ECG, all cases showed pathologic Q waves. Moreover, 10 cases (56%) of these had Q waves in five leads or more. Cardiomegaly on the chest X-ray film (CTR greater than or equal to 60%) was evident in 10 cases and that on echocardiogram ( LVDd greater than or equal to 60 mm) in 16 cases. Physical examinations demonstrated gallop sounds in 89% and a B-B' step formation on echocardiograms in 50%. The LVEDP was greater than 12 mmHg in 13 cases, and the systolic pressure of the pulmonary artery was higher than 35 mmHg in 13 cases. On the other hand, the reduced cardiac index (less than or equal to 2.21/min/M2) was observed in only one case. Selective CAG revealed multiple vessel disease in 78%. Ten of the 18 cases had mitral regurgitation demonstrated by left ventriculography.(ABSTRACT TRUNCATED AT 250 WORDS)

Adult↗
PubMed1977

[Studies on the reliability of the polarcardiographic records (author's transl)].

Reliability of the polarcardiogram obtained by the newly constructed polarcardiograph, in which the vector sum circuit applying absolute value operations were used for the computation of the magnitude curve, were examined in fifty normal subjects. There was no statistically significant difference between the means of the measured values of the polarcardiogram and of the corresponding polar components calculated from the three scalar ECG concerning all twenty items, namely spatial magnitude, magnitudes in each plane, each longitude and latitude at the time of the spatial maximum QRS and T vectors, except alpha-longitude. Highly significant positive correlations were observed between these two sets of values in all twenty items. Configurations of the pattern obtained by plotting the instantaneous polar components, which were calculated from the three scalar ECG, on the linear time scale were very similar with those of the polarcardiographic records. These findings showed that the records obtained by the newly constructed polarcardiograph were reliable.

Adolescent↗