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Biomedical subjects

S Yoshii

Publications and source records attributed to S Yoshii.

At least 91 records · Page 5Linked to original sources
PubMed1991

[Nonocclusive intestinal necrosis after the successful veno-arterial bypass].

A 52-year-old male suffered from acute viral myocarditis with severe cardiogenic shock. On his admission, he underwent the inotropic and IABP supports, and subsequently was treated effectively by V-A bypass, which was continued for 35 hours. But he died in the period of 69 hours after V-A bypass from extended bowel necrosis and septic shock. The small and large intestinal mucosal necrosis, hemorrhagic hepatic necrosis and acute tubular necrosis were confirmed at necropsy. It is well known that the nonocclusive mesenteric vascular spasm is concerned strongly in their pathogenesis, after prolonged severe cardiogenic shock.

Acute Disease↗
PubMed1991

[A case of Morgagni's hernia: availability of CT scan, ultrasonography, and trans-abdominal surgical approach].

A 60-year-old obese woman was admitted to our hospital to receive surgical treatment for "slow-growing mediastinal lipoma". With the non-invasive examination such as CT scan and ultrasonography, she was revealed as Morgagni's hernia containing a greater omentum. With a trans-abdominal approach, we could take a good surgical field for the bilateral foramina of Morgagni. Several discussions were described for availability of CT scan, ultrasonography and a trans-abdominal approach.

Diagnosis, Differential↗
PubMed1990

Scrotal septocutaneous island flap for the reconstruction of the urethral fistula.

We report the reconstruction of the urethral fistula using a scrotal septocutaneous island flap. A scrotal septocutaneous island flap is supplied by vascular networks in the scrotal septum area from both perineal arteries and posterior scrotal arteries. This flap is divided into two flaps, one for urethral lining and the other for the skin defect. We found it to be a simple, useful, and reliable alternative to other local flaps. However, hairless skin of the scrotum must be used for the urethral lining. The musculocutaneous flap is also reliable. However, use of the scrotal septocutaneous island flap can save the musculocutaneous flap for secondary procedures.

Humans↗
PubMed1989

[A clinical study of 92 cases of renal cell carcinoma--statistical analysis of prognosis according to the new TNM classification].

A clinico-statistical study was made on 92 patients with renal cell carcinoma who visited us from January 1978 to November 1988. The results were as follows: 1. Seventy-eight patients were treated by radical nephrectomy, two patients by partial nephrectomy, and three patients were treated at other hospitals initially. Nine patients were underwent only conservative therapy. 3. Overall 1, 3, 5, and 10-year survival rates by Kaplan-Meier method were 81.8%, 58.0%, 55.3%, and 50.2%, respectively. 3. The 3-year survival rates according to clinical T-stage were 71.3% for 56 patients in T2, 66.8% for 16 patients in T3a, and 24.1% for 16 patients in T3b. A significant difference existed between patients in T3a and patients in T3b. It appears that the new TNM classification system is more accurate for prognosis of patients in stage T3 than that currently in use.

Adult↗
PubMed1989

[The usefulness of two-dimensional transesophageal echocardiography in follow-up studies of dissecting aortic aneurysm].

Two-dimensional transesophageal echocardiography (2D-TEE) facilitates clear imaging of the thoracic aorta, and we have already reported the diagnostic value of this procedure for detecting dissecting aortic aneurysm (DAA). Recently, we performed preoperative and postoperative 2D-TEE in nine surgically treated patients with DAA (Debakey type I: 2 cases, type II: 1 case, type IIIa: 2 cases, type IIIb: 4 cases), and repeated 2D-TEE in six medically treated patients (DeBakey type IIIa: 2 cases, type IIIb: 4 cases), and the usefulness of 2D-TEE in the follow-up study of DAA was evaluated. Two types of ultrasound probe (radial scan type, and sector type with a color-Doppler system) were used in this study. Of the surgically treated patients, four of nine cases in which the initial tears were excised or repaired showed neither leakage nor pseudoaneurysm at the site of graft insertion. Other surgically treated patients showed residual intimal tears and continued to harbor patent false lumen. One patient with type I dissection demonstrated localized saccular aneurysm in the proximal arch of the aorta, but no evidence of aortic regurgitation. Of the six medically treated patients, further extension of the initial dissection was observed in one of the two type IIIa cases. False lumen narrowing was recognizable in three of the four type IIIb patients, and complete obliteration of false lumen was observed at necropsy in one of these three cases. Double-channeled aorta was seen in another case of type IIIb dissection.(ABSTRACT TRUNCATED AT 250 WORDS)

Adult↗
PubMed1988

Strength of bonding between A-W glass-ceramic and the surface of bone cortex.

We examined the bonding strength of apatite- and wollastonite-containing glass-ceramics (A-W.GC) to the surface of bone cortex. Semi-column-shaped blocks of A-W.GC were fixed with screws on the surface of the tibiae of rabbits. The blocks of alumina-ceramic were used as the control. The load required to detach the implant from the surface of bone cortex was measured 2, 4, 8, and 25 weeks after the implantation. The bonding strength between A-W.GC and the surface of bone cortex increased with time. It increased remarkably 4 weeks after the implantation, suggesting that the chemical bonding advanced rapidly between 2 and 4 weeks after the implantation. The tensile strength of bonding reached a maximum of 15.1 +/- 3.1 kg/cm2 25 weeks after the implantation. The shear strength of bonding reached a maximum of 17.1 +/- 2.3 kg/cm2 25 weeks after the implantation. From these studies, we conclude that A-W.GC has a capability of making relatively quick bonding to the surface of bone cortex.

Animals↗
PubMed1988

Quadricuspid aortic valve perforation resulting from bacterial endocarditis--2-D echo- and angiographic diagnosis and its surgical treatment.

A 75-year-old man with quadricuspid aortic valve regurgitation affected by bacterial endocarditis is reported. The aortic valve consisted of 4 equal-sized cusps (type a) and a supernumerary cusp located between the right and noncoronary cusps. A right coronary ostium was close to the accessory commissure, but there was no displacement. A few small fenestrations were found at the 4 commissures and a large perforation resulting from endocarditis was observed in the noncoronary cusp. 2-D echocardiogram and angiogram suggested these findings, and they were confirmed at surgery. Successful aortic valve replacement was achieved.

Aged↗