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Biomedical subjects

T Harashina

Publications and source records attributed to T Harashina.

At least 55 records · Page 3Linked to original sources
PubMed1985

Reconstruction of the defect of the oropharynx using free jejunum.

Reconstruction of oropharyngeal defect using free jejunum was carried out in two patients with selected situation. One patient had problem of donor site, which was developed breast. Another patient had problem of recipient site, which required the flap with thin subcutaneous tissue. Reconstruction with free jejunal transfer was successful in both cases. The major advantage of the free jejunal transfer for oropharyngeal defects was discussed in comparison with cutaneous flaps. In conclusion this safety procedure is recommended for reconstruction of oropharyngeal defect.

Adult↗
PubMed1985

[Reconstruction of oral defects using free revascularized jejunum transfer].

Reconstruction of the oral cavity after extended surgery poses many difficult problems. The vital functions of the oral cavity, especially swallowing, mastication and breathing, are seriously impaired by resection of the tongue, floor of the mouth, gingiva or jaw bone. We have used the free revascularized jejunal transfer for reconstruction of the oral cavity in 10 patients and have had good functional and cosmetic results. The advantages of this method are as follows: 1) it is a one-stage operation; 2) the flexibility of the graft preserves maximal tongue function; 3) the graft can be applied to difficult anatomic sites, and 4) the mucosal defect is covered with jejunal mucosa and induration is minimum. Our success rate with this procedure has been 90%. In our experience, this transfer is useful for reconstruction of a massive defect in the oral cavity.

Aged↗
PubMed1984

[Reconstruction of the large scalp defect by free flap transplantation].

The reconstruction of a large scalp defect is extremely difficult on many occasions and repeated operations or a long-term hospitalization is often required. In addition, unsatisfactory results are not unusual. However, it is now possible to perform reconstruction by a one-stage operation of free tissue transplantation (free flap) using microsurgical vascular anastomosis which has rapidly developed in the past ten years. We performed reconstructions applying latissimus dorsi musculocutaneous, greater omentum, groin and scapular flaps. The advantages with the free flap are: (1) one-stage reconstruction is possible; (2) no restrictions on the postoperative position, (3) the flap, which is independent of the blood supply from the recipient, well survives on the recipient with an insufficient blood supply and (4) the damage at the donor site can be minimized. On the other hand, its disadvantages are as follows: (1) the operation requires microsurgical vascular anastomoses; and (2) recipient vessels should be normal. The above report was based on favorable results we obtained in 6 cases of reconstruction with free flap applying microvascular techniques.

Aged↗
PubMed1983

End-to-side anastomosis of the vein: a technical innovation.

A new technique for easier end-to-side anastomosis of veins is presented. By applying a few traction sutures to the edge of the venotomy and tenting the venous wall, thereby keeping the venotomy open, end-to-side anastomosis of the vein can be easily performed.

Animals↗
PubMed1983

A new anastomosis technique for large-calibered vein grafts.

A new anastomosis technique for large-calibered vein graft to repair a smaller-sized arterial defect is presented. At the proximal (upstream) anastomosis, a combination of sleeve anastomosis technique and plication of excess vessel wall is performed; and at the distal (downstream) anastomosis, the "fish-mouth" incision technique is used. The patency rate obtained with this technique is quite satisfactory, which justifies its use in clinical situations.

Animals↗
PubMed1982

The reapplication of microvascular clamps after venous anastomosis: an experimental study.

Albino rats were used to determine the effects of the reapplication of microvascular clamps in veins after anastomosis. The results demonstrate that, if necessary, microvascular clamps can be reapplied either proximal, or both proximal and distal to a venous anastomosis for up to 30 minutes, thus allowing a suture to be redone or the lumen to be explored with no loss of patency.

Animals↗
PubMed1979

The omental sandwich reconstruction for a full-thickness cheek defect.

We present a case in which a large full-thickness cheek defect was successfully repaired in one stage by the "omental sandwich technique." We transferred the omentum as a free flap, anastomosing the middle omental vessels with the end stumps of the gastroepiploic vessels after they had been brought to the neck through a subcutaneous tunnel. Skin grafts were applied then on both sides of the revascularized omentum.

Carcinoma, Squamous Cell↗
PubMed1978

Reconstruction of mandibular defects with revascularized free rib grafts.

Two cases of hemimandibular reconstructions with revascularized free rib grafts are presented. The viability of the transplants was confirmed by bone scans and biopsy, even though the main nutrient vessels providing the intramedullary blood flow were not included in these grafts (and only the periosteal circulation was utilized). The removal of a rib graft without the nutrient vessel eliminates the need for a complicated posterior dissection, close to the costovertebral joint. Revascularized free bone grafts have a greater chance of survival, provide more rapid healing, offer less risk of absorption, and are more resistant to infection than conventional bone grafts.

Adult↗