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Volume 7 (1978)
- Issue 6 Pages 913-
- Issue 5 Pages 615-
- Issue 4 Pages 559-
- Issue 3 Pages 499-
- Issue 2 Pages 251-
- Issue 1 Pages 1-
Volume 7, Issue 3
Displaying 1-12 of 12 articles from this issue
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[in Japanese]1978 Volume 7 Issue 3 Pages 499
Published: June 15, 1978
Released on J-STAGE: October 07, 2011
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[in Japanese], [in Japanese], [in Japanese], [in Japanese]1978 Volume 7 Issue 3 Pages 501-508
Published: June 15, 1978
Released on J-STAGE: October 07, 2011
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-Platelet adhesiveness of these inner surfaces and anticoagulant activity of mucopolysaccharides extracted from the graftsT. ATSUTA, Y. KUBO, H. IKEDA, Y. NISHIOKA, T. SASAJIMA, S. NAKAJIMA, K ...1978 Volume 7 Issue 3 Pages 509-513
Published: June 15, 1978
Released on J-STAGE: October 07, 2011
JOURNAL FREE ACCESSThe platelet adhesiveness of fibrocollagenous tissue graft was measured to evaluate antithrombogenicity of the inner surface of the graft. The platelet adhesiveness of this graft did not exceed significantly that of own vein and this graft showed to provide high antithrombogenicity.
Anticoagulant activity of mucopolysaccharides extracted from this graft was studied with thrombelastgram. This material showed to have high anticoagulant activity. The mechanism of anticoagulant activity was similar to heparin, although heparin was not found out in this material.View full abstractDownload PDF (2651K) -
Y. NOISHIKI, Y. YAMANE1978 Volume 7 Issue 3 Pages 514-517
Published: June 15, 1978
Released on J-STAGE: October 07, 2011
JOURNAL FREE ACCESSSparkes' mandril graft was evaluated as an arterial substitute on a study in experimental animals. Sparkes' mandril graft which consisted of a silicone rubber rod with a covering of siliconized knitted Dacron tube was inserted in a dog's subcutaneous layer. As the control, Tetoron mesh tubes were used. Another control study included knitted Dacron vascular pros theses which were examined from 1 to 177 weeks after implantation in the thoracic aortae of 146 dogs.
Under light microscope, the bundle of Dacron fiber of Sparkes' mandril graft was demonstrated to be encapsulated by connective tissue. However, the fibers had been siliconized, the bundle of them was floated in tissue fluid and did not attached directly to the surrounding connective tissue and tended to be separated from it. This finding indicated that the graft was easily affected by bacteremic challenge, because once the graft infection occured at a small part, it would frame up rapidly along the graft widely. Furthermore, during implantation, neointima of the graft would be easily scaled off from the Dacron fibers by the continuous stress of pulsation. At operation, the Sparkes' mandril graft had a great tendency for the end to fray. Thus, the Sparkes' mandril graft would not be able to maintain neointima stable.
In the cases of the control specimens of both Tetoron tube and knitted Dacron vascular prosthesis, connective tissue interspersed among the fibers of grafts and the surrounding connective tissue adhered to the fibers. They were more stable to handle than the Sparkes' mandril graft.
These results show that the Sparkes' mandril graft has grave falts and is unacceptable as an arterial substitute.View full abstractDownload PDF (5627K) -
-an elastic and impermeable structure with velour-like surfaceN. KABA, Y. YAMAMOTO, M. ISHIKAWA, T. YOHDA, R. KAN, T. HOSOYA, T. WAT ...1978 Volume 7 Issue 3 Pages 518-526
Published: June 15, 1978
Released on J-STAGE: October 07, 2011
JOURNAL FREE ACCESSA vascular prosthesis has been devised using a newly non-woven cloth after repeated fundamental studies. The non-woven cloth adequate for medical use has been produced which is made of polyester fibrics (Tetoron) bound with latex rubber (Regitex M).
This newly developed vascular prosthesis has inner and outer layer of non-woven cloth and layer of latex rubber in between. Therefore the prosthesis has high porous surface (velour-like) and elasticity itself, but which has no porosity that means no permeability between the inner and outer space.
In experimental study these prosthesis were implanted into the canine's abdominal aorta. After 6 years the prosthesis remained patent without stricture aneurysmal dilatation or calcification. And then thin and homogeneous neointima has been formed on the inner surface of prosthesis dispite of no porosity.
Recently the prostheses have been applicated clinically for reconstruction of the small arteries.View full abstractDownload PDF (10529K) -
H. TAKAHASHI, A.T.Jr. YOKOBORI, H. MONMA, M. ISHIZAKI, H. SEKINO, T. Y ...1978 Volume 7 Issue 3 Pages 527-533
Published: June 15, 1978
Released on J-STAGE: October 07, 2011
JOURNAL FREE ACCESSThe arteriografts clinically used to serve as blood access for hernodialysis will often be occluded in the hemodialysis practise. The occlusion of the arteriografts is one of the most important problems in hernodialysis. The cause and the mechanism have not yet clearly known and remains unsolved. In connection with elucidating them, in the present article the opening characteristics as fracture phenomena of the bovine and the swine arteriografts by the piercing of a needle has beerl studied.View full abstractDownload PDF (13697K) -
-Results of experimental dog implantationH. SAITO, Y. MIYAUCHI, K. ITO1978 Volume 7 Issue 3 Pages 534-539
Published: June 15, 1978
Released on J-STAGE: October 07, 2011
JOURNAL FREE ACCESSThree different kind of heterografts were evaluated in the chronic implantation in dog aorta and the following results were obtained.
1) Neochrome tanned and ethanol preserved bovine grafts could not be used clinically because of their poor durabilities.
2) On the other hand, glutar aldehyde tannedd heterograft seemed to be applied clinically from the view point of its durability and antithrombogenic property.
3) Although the progressive stenotic change at the anastomotic site remains unsolbed, it was rather minor problem as long as the graft was larger than 6mm in diameter.View full abstractDownload PDF (11012K) -
-Arteriosclerotic changes of neo-arterialwallsY. NOISHIKI, Y. YAMANE1978 Volume 7 Issue 3 Pages 540-543
Published: June 15, 1978
Released on J-STAGE: October 07, 2011
JOURNAL FREE ACCESSNeo-arterial walls of polyester vascular prostheses were examined under both light and electron microscopes, roentgenogram and X-ray microanalysis from 50 to 200 weeks after implantation in the thoracic aortae of 36 dogs.
In all specimens, arteriosclerotic changes of neoarterial walls were noticed by means of both light and electron microscopes and deposition of calcium salts was clearly demonstrated by roentgenographic and X-ray microanalytic studies. Healing process of synthetic vascular prosthesis was roughly the same as that of mural thrombi. These results supported a theory, that mural thrombi is one of factors of the pathogenesis of arteriosclerosis. As neo-arterial walls are essentially weak mechanically and nutri-tionally, degenerative changes of the walls will usually ensue. Thus, neo-arterial walls seem to be very useful in studies of arteriosclerosis.
These observations indicate that neo-arterial walls have an inclination to become arteriosclerotic. There-fore, care must be taken of arteriosclerotic changes in arterial reconstructive surgery using synthetic vascular prosthesis.View full abstractDownload PDF (5535K) -
M. YAMADA, T. IRIYAMA, S. ISHIHARA, H. SHIONERI, N. ANZAI1978 Volume 7 Issue 3 Pages 544-547
Published: June 15, 1978
Released on J-STAGE: October 07, 2011
JOURNAL FREE ACCESSThirty-eight patients underwent pacemaker insertion from June 1971 to December 1976 in our department.
In 12 cases who passed more than 3 years, 3 years survival rate was 75 per cent.
The average threshold in high grade A-V block was 0.54mA at the time of initial implantation. Abnormal high values of threshold were recorded in one case of cardiomyopathy at the time of initial and reimplantation.
Electrode dislocation occured in 4 patients, stimulation of diaphragma in 2 patients, exit block in 1 patient and demand failure in 2 patients. Gastrointestinal bleeding occured in 1 case who had stomach cancer. Wound infection, fracture of electrodes and myocardial perforation not occured.
Reimplantation following more than 12 months after initial implantation were performed in 12 cases. The trouble of machines were detected in 7 removed pacemakers.View full abstractDownload PDF (479K) -
K. KOISO, H. TAKAYASU, R. KITAGAWA, T. KOMAI1978 Volume 7 Issue 3 Pages 548-550
Published: June 15, 1978
Released on J-STAGE: October 07, 2011
JOURNAL FREE ACCESSAcetylated canine pericardium was known to disappear within one month when implanted in the subcutaneous tissues of dd-strain mice. Biodegradation was considered to be related with some immunological process, because of the heterogenecity of the canine pericardium, so that t his material was then applied to examine the process and mechanism of biodegradation.
The membrane was implanted subcutaneously on the back of dd-strain mice, immunosuppressed by thymectomy, anti-thymocyte serum, and 6-MP. This material was digested more rapidly in the non-immunosuppressed mice than in the immunosuppressed mice. From these facts it was assumed that some immunological process, humoral or cellular, might be involved in the process of biodegradation of heterologous acetylated canine pericardiumView full abstractDownload PDF (2298K) -
[in Japanese]1978 Volume 7 Issue 3 Pages 551-552
Published: June 15, 1978
Released on J-STAGE: October 07, 2011
JOURNAL FREE ACCESSDownload PDF (2134K) -
[in Japanese], [in Japanese], [in Japanese], [in Japanese]1978 Volume 7 Issue 3 Pages 553-555
Published: June 15, 1978
Released on J-STAGE: October 07, 2011
JOURNAL FREE ACCESSDownload PDF (630K)
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