Considerations on anesthesia in experiments using rats.
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Anesthetics, Intravenous↗
Biomedical subjects
M Wako
Publications and source records attributed to M Wako.
Repair of wide coup de sabre without cutaneous excision by means of pericranial-galeal padding flap.
A case of double linear scleroderma of the forehead (coup de sabre) is described. The histopathology of this rare lesion is now well known with a normal epidermis and a sclerotic dermis. The correction was done with an original two-stage procedure: the lesion with alopecia was first treated by excision-suture and a transfer of the involved subcutaneous tissue along the right inner canthus; 1 year later, by a hemicoronal incision, we transferred a galeal-pericranial flap beneath the wider forehead lesion. We think that the use of a filling flap to correct wide coup de sabre lesions without cutaneous excision can be a simple alternative to the classic treatment by complete excision and flap reconstruction. The subcutaneous fascial system of the scalp can provide a good donor site with minimal morbidity.
Adult↗
[Position of venous outflow: a crucial aspect in flaps with 2 opposed pedicles. Application to the cutaneous delay phenomenon. Experimental study with rats].
In the present study, the authors decided to focus on the effect of the venous outflow location in the survival of a flap with a choke vessels barrier by means of a rat bipedicled ventral island flap. In a first experiment, the extent of flap necrosis was examined in three experimental groups: group 1, alternate vein and artery ligation (n = 5); group 2, unilateral artery ligation (n = 5); group 3, unilateral pedicle ligation (n = 5). Less than 10% necrosis occurred in group 1; 28% in group 2 and 33% in group 3. In a second experiment we applied the first results to the delay phenomenon. 10 rats were divided into 2 groups: group 4, primary ligation of a complete pedicle on one side; group 5, primary alternate vein and artery ligation and the flaps were raised 21 days later. We observed 20% necrosis in group 4 and only 4% in group 5. The data of the first experiment indicate that a vein remaining near the artery can be a dramatic obstacle to the efficiency of choke vessels. The second experimental study shows the superiority of primary selective ligation in the delay phenomenon.
Animals↗
Reduction malarplasty.
One of the most frequently requested facial contour improvement procedures in the Orient is reduction malarplasty. However, until recently, osteotomies in the malar region have been performed by means of a coronal incision that required a larger incision and more invasive procedure than many patients are comfortable with when considering an elective cosmetic surgical procedure. We have developed a reduction malarplasty method to improve facial contours that circumvents the drawbacks inherent in the conventional method. In our method, the protrusion in the cheekbone area is corrected by performing an osteotomy of the zygoma through an intraoral incision and an osteotomy of the zygomatic arch through a small preauricular incision.
Adult↗
Dermabrasion using an ultrasonic surgical aspirator.
We used an ultrasonic surgical aspirator on the epidermal surface to perform dermabrasion instead of the conventional motor-driven grinder. It was determined on histologic examination that it is possible to fragment the epidermis with greater selectively using the ultrasonic surgical aspirator. Abrasion also can be performed safely on spotty lesions and intricate, problematic regions with the ultrasonic surgical aspirator. We feel that the ultrasonic surgical aspirator is a promising device for use in dermabrasion.
Adult↗