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Biomedical subjects

K Iuchi

Publications and source records attributed to K Iuchi.

At least 91 records · Page 5Linked to original sources
PubMed1985

[Chronic empyema: key-point and results of our one-step operation].

A new operative method named as "Extraperiosteal air plombage" against chronic empyema were performed to 80 patients and its cure rate by the first operation was 93.8% which is a good and high rate. Know-how to perform the operation without failure is (1) to complete the excoriation of the pleural debris, (2) to seal completely the leakage such as bronchiolar fistula, (3) to perform the extraperiosteal abbration rather over much to attach the lung to the muscle layer, (4) to close the chest wall completely, and (5) to wash out thoroughly the extraperiosteal cavity with brush and enough saline solution and to use the effective antibiotica.

Aged↗
PubMed1984

[Usefulness of ECG gated cardiac computed tomography in measurement of left ventricular volume and wall thickness].

Electrocardiogram gated cardiac computed tomography (CT) was performed to evaluate the usefulness in the measurement of left ventricular volume and left ventricular wall thickness in 25 patients; five with angina pectoris, five with old myocardial infarction, eight with hypertrophic cardiomyopathy, four with dilated cardiomyopathy, and three healthy men. The left ventricular volume was calculated as the sum of the volume of each slice, which was area times thickness of the slice. The left ventricular wall thickness was measured in reconstructed short-axis view at the level of the mitral valve and papillary muscle. The left ventricular volume and left ventricular wall thickness determined by CT were compared with that by left ventriculography (LVG), and that by two-dimensional echocardiography (2 DE), respectively. The following results were obtained. There were good relationships between left ventricular volume, end-diastolic volume, end-systolic volume, ejection fraction by CT and those by LVG, but left ventricular volume by CT was smaller by about 20% than that by LVG. In the measurement of stroke volume, no relationship was recognized between CT and LVG. Concerning the measurement of left ventricular wall thickness, more available figures were obtained by CT than by 2 DE, particularly at the apical region, lateral wall, and posterior wall. In the other segments of the left ventricle, CT was also more suitable for the measurement of the wall thickness. Interventricular septal thickness was correlated between reconstructed short-axis view of CT (Y) and transverse view of CT (X), and the equations Y = 0.66X + 2.13 (r = 0.79) at the mitral valve level, and Y = 0.56X + 3.00 (r = 0.81) at the papillary muscle level were obtained. Therefore, reconstructed short-axis view should be used for the measurement of the left ventricular wall thickness not to overestimate the thickness.

Angina Pectoris↗
PubMed1981

[Two cases with the heart murmur originated from aortocoronary bypass: the diagnostic use of dipyridamole (author's transl)].

Two cases with the heart murmurs considered to be caused by aortocoronary (A-C) bypass surgery were reported. Case 1: A systolic and an early and late diastolic murmurs were noted following A-C bypass surgery. The murmurs were located at the second left intercostal space. After methoxamine, the systolic and early diastolic murmurs increases slightly in intensity, while the late diastolic murmur did not change. Amyl nitrite inhalation slightly increased the intensity of the systolic murmur, but did not that of the diastolic murmur. Dipyridamole injection at a rate of 0.142 mg/kg/min resulted in the increase of both systolic and diastolic murmurs. Case 2: A diastolic murmur was noted following the bypass surgery, which was situated over the fourth left intercostal space, 4 cm outside from the left sternal border. Methoxamine injection intensified the murmur. The murmur was not affected by amyl nitrite. After dipyridamole injection, the murmur was slightly intensified. Dipyridamole is known to dilate coronary vessels without affecting appreciably the systemic circulation. In these two cases, the murmur noted following A-C bypass surgery was increased with dipyridamole, suggesting clinical applicability of this drug in ascertaining the bypass flow murmur.

Coronary Artery Bypass↗
PubMed1981

[Relationship between vascular diameter and intracardiac pressure in tricuspid or pulmonary insufficiency detected by contrast echocardiography (author's transl)].

In order to evaluate the usefulness of contrast echocardiography in the diagnosis of tricuspid (TI) and pulmonary insufficiency (PI), 30 patients with various heart diseases and 7 controls were examined. The dimensions of the inferior vena cava and pulmonary artery were also measured on the two-dimensional echocardiogram. Cardiac catheterization was performed in 18 patients to study the relationship between the diameters of the vessels and the intracardiac pressures. The following results were obtained. 1) TI was detected without difficulty by contrast method using two-dimensional echocardiography on the four-chamber view. The diagnostic sensitivity was higher than that of conventional methods. 2) PI was also detected by the parasternal approach. The regurgitation of the contrast material across the pulmonary valve was easily confirmed because of pulmonary arterial dilatation. 3) In the cases with TI, the dimension of the inferior vena cava was larger than 20 mm. The right ventricular systolic pressure and the mean right atrial pressure were higher than 40 mmHg and 6 mmHg, respectively.

Blood Pressure↗