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Biomedical subjects

T Saga

Publications and source records attributed to T Saga.

At least 217 records · Page 12Linked to original sources
PubMed1983

[Current status of surgical treatment of univentricular heart disease and complicated cardiac anomalies associated with asplenia and polysplenia syndrome].

Current status and problems in diagnosis and surgical treatment for complicated cardiac anomalies were assessed by analyzing surgical cases consisted of 32 univentricular heart cases, 27 asplenia syndrome cases, and 8 polysplenia cases. Univentricular heart cases consisted of 3 cases of type A, 8 cases of type B and 21 cases of type C. All of 7 cases performed corrective surgery were with bidirectional cross blood flow. Corrective surgery was performed on 7 cases including 6 cases of ventricular septation procedure with blood flow conversion and a case of modified Fontan procedure, and 2 were survived. Anatomical corrective surgery was performed for complicated cardiac anomalies on 4 cases with asplenia syndrome and 7 cases with polysplenia syndrome, and 2 and 6 cases were survived respectively. It was possible to perform functional corrective surgery on some cases who had difficulties for anatomical corrective surgery. For anatomical corrective surgery, it is preferable to use left ventricle as systemic ventricle. In splenic dysgenesis cases, main causes of late deaths were infection (asplenia syndrome) and complete A-V block (polysplenia syndrome) and it is necessary to clarify the immune mechanism and conduction system of the heart.

Abnormalities, Multiple↗
PubMed1983

[A case of malignant reticulosis with pericardial effusion and central nervous system involvement].

A 64-year-old man was admitted with complaints of lethargy, malaise, weight loss and transient left-hemiplegia and aphasia. Initial physical and laboratory findings showed splenomegaly and pericardial effusion. During his hospital stay, his mental status deteriorated progressively. The characteristic pathology of malignant reticulosis was noted at autopsy. Microscopic examination of the brain demonstrated accumulations of malignant histiocytic cells confined within small vessels and subsequent multiple hemorrhages and necroses in the gray matter. Malignant reticulosis with antemortem manifestations of pericardial effusion and central nervous system involvement is rare.

Brain Neoplasms↗
PubMed1982

Anatomically corrected malposition of the great arteries--case reports and a review.

Anatomically corrected malposition of the great arteries (ACM) is an extremely uncommon cardiac disease in which the great arteries arise from their appropriate ventricles despite abnormal spatial interrelations. Two patients with this malformation underwent successful surgical intervention for their associated anomalies. One was of situs solitus, d-loop and l-malposition and the other of situs inversus, l-loop and d-malposition of the great arteries. Fifty-three cases with accurate anatomical description were collected from the literature, and anatomical characteristics and associated anomalies were investigated. From the standpoint of anatomy and hemodynamics, we considered that ACM should be classified into atrioventricular concordant ACM, atrioventricular discordant ACM and ACM with situs ambiguus. Heart position and conus were variable. Dextrocardia and mesocardia were frequent. Bilateral conus was characteristic in concordant ACM, and subpulmonary conus was prominent in discordant ACM. The hypoplasia of the right heart and juxtaposition of the atrial appendages were in high incidence in cases of ACM. Surgical intervention was also discussed.

Angiocardiography↗
PubMed1982

Surgical results and factors affecting operative mortality in total anomalous pulmonary venous drainage.

Factors affecting the surgical results of total anomalous pulmonary venous drainage were evaluated in 17 patients in an attempt to establish an appropriate plan of management. The mortality rate correlated with age, size of interatrial communication, arterial oxygen saturation and left heart volume but not with pulmonary to systemic systolic pressure ratio, vascular resistance ratio and right ventricular volume. In cases where the symptoms appeared early in life, left heart volume was small and clinical features were severe. Four children with a left ventricular end-diastolic volume of less than 65% of normal died of low cardiac output syndrome. In those with an unusually small left heart, enlargement of the left atrium and/or delayed ligation of the anomalous vertical vein were considered more favorable. Left atrial and ventricular volumes were restored to normal after the surgery.

Age Factors↗
PubMed1982

Orbital leiomyoma accompanied by orbital pseudotumor.

We examined a 53-year-old man who had diplopia and proptosis of the right eye. Computed axial tomography showed a mass extending from the retrobulbar space to the apex and the lower portion of the right orbit. The tumor removed by the first operation from the retrobulbar space was diagnosed as leiomyoma. The mass palpated through the tissues of the lower right eyelid in the initial examination enlarged 7 months after the first operation. The tumor specimen subsequently obtained from this portion histologically revealed inflammatory pseudotumor. Therefore it was concluded that this patient had a leiomyoma accompanied by an inflammatory pseudotumor ipsilaterally.

Diplopia↗
PubMed1980

Supplementary motor area: neuronal response to motor instructions.

1. Single-unit recordings were obtained from the supplementary motor area of the cerebral cortex of two monkeys during execution of learned movements 2. Monkeys were required to push or pull a cast attached to the right forelimb in response to a sudden perturbation delivered via the cast. An instruction as to the direction of the monkey's movement was delivered 2.5--5 s prior to the occurrence of the perturbation and correct performance, therefore, required the animal to develop a preparatory state prior to the perturbation. 3. Of many hundreds of neurons recorded, 201 exhibited instruction-induced changes of activity during the period intervening between the instruction and the perturbation-triggered movement. 4. In 94 neurons, effects of the instruction were differential depending on which of the two instructions was given, whereas in 107 neurons, effects were nondifferential. The latencies of the differential responses appeared to be shorter (starting as early as 140 ms after the instruction). 5. The magnitude of the instruction effects varied in parallel with development of enhanced motor skill as the monkeys gained more experience in responding to the triggering stimulus. 6. These observations substantiate the hypothesis that the supplementary motor area plays a part in modifying a sensory-triggered motor output.

Animals↗