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Biomedical subjects

G B Davis

Publications and source records attributed to G B Davis.

At least 55 records · Page 3Linked to original sources
PubMed1980

Intraoral osseous choristoma: report of case.

A case of oral osseous choristoma of the buccal vestibule is presented. Of 27 reported cases, including this one, 24 occurred in the dorsum of the tongue, one in the ventral aspect of the tongue, and two in the buccal mucosa. There have been no recurrences reported after local excision.

Adult↗
PubMed1978

Chondromyxoid fibroma of the mandible. Case report.

Chondromyxoid fibroma in the jaws is an extremely rare, benign tumor. The lesion is relatively more common in the long bones and mainly occurs in adolescents and young adults. The treatment of choice is local resection of the tumor. Recurrences are not uncommon, especially when curettage was the method of treatment. Differentiation from chondrosarcoma is mandatory as treatment and prognosis are dissimilar.

Adolescent↗
PubMed1977

Therapeutic embolization for intractable chronic bleeding.

Intractable, chronic vaginal and/or vesicle bleeding complicating pelvic cancers in five women was treated by transcatheter embolization of the hypogastric artery or its branches. Bleeding was presumed to be from hypervascular granulation tissue formed in response to irradiation in two patients and from tumor tissue in three. The embolic materials were Gelfoam and Oxycel reinforced autologous clots. Bleeding was stopped or reduced in volume by at least 90% in each patient. This form of therapy was useful even though bleeding site was not demonstrated angiographically.

Chronic Disease↗
PubMed1977

Sodium nitroprusside in the treatment of ergotism.

Severe peripheral vasoconstriction of the legs due to hypersensitivity to small doses of ergotamine tartrate developed in a patient with migraine headaches. The vasospasm was successfully treated with continuous intra-arterial and intravenous infusion of sodium nitroprusside. The contribution of angiography in the diagnosis and treatment of ergotism is stressed.

Adult↗
PubMed1977

The role of bronchial arteriography and therapeutic embolization in hemoptysis.

A case is presented which demonstrates the value of bronchial arteriographic studies in localizing and treating hemoptysis. The patient was bleeding from an old post-tuberculous bulla and for several reasons was not a candidate for surgery. Bronchial arteriographic studies demonstrated both hypervascularity in the region of the cavity and also a mycotic aneurysm of a bronchial artery. After therapeutic embolization with gelatin (Gelfoam), the hypervascularity and aneurysm were no longer opacified. Active bleeding abruptly ceased and, except for a single mild recurrence, has not recurred during the three months since therapeutic embolization. The major theoretic risk of bronchial arteriographic study and therapeutic embolization is spinal injury. It is believed that permanent injury can almost be avoided, providing proper technique is used.

Bronchial Arteries↗
PubMed1977

Advantage of intraarterial over intravenous vasopressin infusion in gastrointestinal hemorrhage.

Recent laboratory data have suggested equivalent therapeutic value of selective intraarterial or peripheral intravenous infusions of vasopressin in the control of gastrointestinal bleeding. However, recent experience in two clinical cases continues to support a therapeutic advantage of the selective intraarterial route and casts doubt on the applicability of the laboratory results to man. Until further data is accumulated, it is premature to discard the presumed therapeutic advantage of the selective intraarterial infusion of vasopressin.

Adult↗
PubMed1976

The bonding properties of elastomer tray adhesives.

1. The surface yielded by the acrylic resin formed against tinfoil provided better retention for the rubber base than any other surface tested. 2. Wax consistently gave the worst results in spite of careful boiling out. 3. The use of wax or asbestos spacers would not degrade the resin surface if tinfoil, or presumably the more easily obtainable aluminum foil, were used as a separating medium. 4. For drying times of between 15 minutes and 72 hours, no significant change was found in bond strength of elastomer to tray material. 5. Drying times of less than 15 minutes were found to be inadequate and to decrease bond strength; they are clinically inadvisable. 6. If, as a result of unavoidable delay, a tray is painted and then left for a number of days prior to making the impression, satisfactory bonding will still occur. However, if the dentist wishes to apply a second coat and dry it for 15 minutes, an increase in bond strength is likely to occur. 7. In the six systems tested, failure occurred at varied levels, from a low of 20 p.s.i. to a high of 80 p.s.i. 8. In the silicone and polyether systems, cohesive failure of the elastomer occurred before the adhesive bond between elastomer and tray failed. This finding correlates with the clinical observation that silicones and polyethers are more difficult to remove completely from acrylic resin trays when an impression has to be repeated.

Acrylic Resins↗
PubMed1976

The relative effects of selective intra-arterial and intravenous vasopressin infusion.

The relative effects of selective intra-arterial and intravenous infusions of vasopressin were evaluated in 16 normotesive dogs. One group was infused via the left gastric artery, one was infused via a peripheral vein, and a control group was not infused. Flow to the stomach and bowel was reduced by an average of 73% and 45%, respectively. There was no significant difference between selective intra-arterial and intravenous infusions with regard to their effects on visceral flow or their systemic parameters. Control animals demonstrated only minor variations from base-line flow.

Animals↗