Biomedical subjects
Publications and source records attributed to B C Terry.
A case of unilateral relapse of mandibular prognathism after oblique osteotomy of the mandibular rami is described. A brief review of the pertinent literature is presented and a method of intraosseous fixation by Vitallium plating is illustrated. The need for close postoperative observations and reinstitution of active therapy at the first sign of a relapse tendency is emphasized.
To evaluate accurately changes in blood volume during oral-facial corrective surgery, double-tagged radioisotope blood volume studies were performed preoperatively and postoperatively. Unexpectedly large RCV deficits that were not consistent with EBL were observed in studies conducted at two separate facilities. Hypotensive general anesthesia was used for the intended purpose of reducing blood loss in oral-facial corrective surgery. Various physiological parameters were measured preoperatively, intraoperatively, and postoperatively to evaluate patient response to this anesthetic method. The MAP was reduced from 89.94 +/- 2.13 to 72.79 +/- 1.63 mm Hg under the influence of NaN infusion supplemented with halothane. No dose-response relationship existed between NaN and the intraoperative MAP. A 44% reduction in the measured red cell volume was observed in comparison to a previously studied group of patients who underwent similar surgical procedures under normotensive anesthesia. It is concluded from an extensive review of the literature that the most vulnerable period for serious complications is in the immediate postoperative period. No significant complications or adverse effects were observed in this study. It cannot be emphasized too strongly that the safety of this hypotensive technique lies in constant and careful monitoring of the patient and meticulous attention to all details of anesthetic management.
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The prevalence of bedbugs Cimex hemipera and C. lectularis was investigated in camps for the internally displaced persons (IDPs) in Freetown, Sierra Leone. Two hundred and thirty eight rooms were searched during the day and at night, and 233 (98%) of those rooms in 30 booths were infested with different life cycle stages of bedbugs. There hundred and ninety-eight (68%) of the bedbugs were adults, 145 (24.8%) were nymphs of various instars, and 41 (7%) were clusters of eggs. Significantly (P > 0.05) more bedbugs were recovered during the night inspections 64.6% as compared to 35.4% during the day inspections. In addition, more adult bedbugs were recovered at night than during the day, a manifestation of their peak feeding period. Of the total of 570 adults and nymphs collected and identified, 320 (56.1%) and 250 (43.9%) were Cimex lectularis and Cimex hemipterus respectively. Clinical examination of 221 individuals living in the booths during 3 consecutive weeks of examinations and treatment for conditions suggestive of bedbug infestation (bites and skin reactions as well as treatments for other health and medical conditions) showed that 196 (86%) had wheals as a direct result of bedbug bites. The data of this pilot humanitarian investigation shows a high prevalence of bedbug infestation in these displacement camps. It is recommended that some control measures be instituted, like residual insecticide application along with integrating control methods within the primary health care system, because bedbugs are a source of great irritation and sleepless nights that could lead to stress.
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