Biomedical subjects
J V O'Neill
Publications and source records attributed to J V O'Neill.
Correction of the drooping brow: analysis of approach.
The attainment of a more youthful appearance is one of the goals of cosmetic facial surgery. In the orbital area this is usually accomplished by performing a blepharoplasty. There are, however, a number of cases in which performance of a blepharoplasty of the upper or lower lids or both does not produce as much of an improvement as the patient or the surgeon would desire. Proper preoperative analysis enables one to determine that the blepharoplasty alone will not produce the desired result. In those instances in which the ptosis of the blow is a contributing factor to the aged appearance, an operative procedure to correct the brow would be undertaken prior to or in conjunction with the blepharoplasty procedure. The various operative procedures will be discussed and analyzed from their positive and negative aspects.
Closure of an oro-antral fistula.
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Delayed grafting of forehead flap defects.
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How to evaluate the cosmetic and functional results obtained when infected granulation tissue is the recipient bed for a split-thickness skin graft.
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Bridge method of skin-flap delay.
Necrosis, a catastrophic complication of skin-falp use, is due to inadequate capillary blood flow. Delay procedures, which are based on newer information regarding skin vasculature and delay dynamics, can augment surviving-flap length. A delay procedure that used multiple skin bridges was studied in 121 flaps in 21 pigs. The result was a considerably greater amount of length augmentation than has previously been reported. This enhanced effect is related to a combination of nearly maximal sympathectomy in a highly ischemic, surgically defined experimental flap.
Retropharyngeal hematoma secondary to minor blunt trauma in the elderly patient.
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Cryosurgery of supraglottic cavernous hemangioma.
Cryosurgery is gaining more and more importance as a therapeutic modality within the field of head and neck surgery. It has been used effectively in the treatment of cavernous hemangiomas of the skin and oral cavity. Supraglottic vanernous hemangiomas present a challenge in management when surgical intervention is indicated. The results of cryosurgery in the treatment of such a lesion are reported.
Some factors involved in the skin flap delay phenomenon.
The use of skin flaps for reconstruction following extensive ablative surgery in the head and neck area has played a major role on the improvement of the results being attained. Using the pig as an experimental animal various factors of flap orientation, skin incisions and flap undermining were investigated. Results confirmed the ineffectiveness of incision alone as a delay maneurver and suggested that anatomical orientation of cutaneous skin flaps was not of crucial significance. The complete mechanism of the positive effects of delay remains undefined.
Factors involved in the skin flap delay phenomenon.
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Otologic complications of radiation therapy.
Radiation therapy has proved to be a valuable modality in the management of patients with nasopharyngeal tumors. Routine follow-up of patients in the tumor clinic of the University of Illinois Eye and Ear Infirmary appeared to indicate an increasing incidence of otologic pathology. For this reason, a retrospective study focusing on the otologic findings in patients whose radiation therapy for nasopharyngeal tumors included the external auditory canal, middle ear space, or eustachian tube was performed. The results of this study are discussed in relationship to total radiation dosage, time of survival after therapy, and pretreatment otologic status. The complications covered a spectrum from intermittent serous otitis media to osteoradionecrosis of the external auditory canal. Possible contributing factors are discussed, and preventive neasures are suggested.
Improved survival associated with postoperative wound infection in laryngeal cancer: an analysis of its therapeutic implications.
A retrospective analysis revealed improved survival rates in laryngeal cancer patients who had postoperative wound infection following total laryngectomy and radical neck resection. The overall five-year survival rates were 44% in the infection group and 31% in the control group. On further analysis, the beneficial effect of infection was most evident in patients with stage III disease. Seventy-three percent of these patients with wound infection were alive at five years, compared with 32% of the control group. The protection from recurrent cancer in these patients afforded by the bacterial contamination may be secondary to activated immune mechanisms. The therapeutic implications of our findings suggest that the immune adjuvant is given at the time of surgical treatment rather than when tumor burden is far advanced. Only a few such protocols are under analysis presently.