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Biomedical subjects

C G Wallace

Publications and source records attributed to C G Wallace.

6 recordsLinked to original sources

Prospective audit of 106 consecutive human bite injuries: the importance of history taking.

OBJECTIVES: Some patients attempt to conceal human bites with factitious mechanisms of injury. Follow up questioning allows patients to modify their histories. This practice was prospectively audited. METHODS: Patients with cutaneous wounds who did not present with a history of human bite were asked a follow up question. Those who then gave a history of human bite were noted. RESULTS: Certain groups of patients with human bites were significantly more likely to provide a factitious history and/or delay presentation. CONCLUSION: Follow up questioning dramatically increased the case-detection rate, prompting specific management.

Adolescent↗

Effects of training and supervision on recurrence rate after inguinal hernia repair.

BACKGROUND: There is little information about the effects of operative experience and supervision of trainees on outcome in inguinal hernia surgery, one of the cornerstone operations of basic surgical training. METHODS: All primary inguinal hernia repairs carried out between 1994 and 2001 were registered prospectively in the Lothian Surgical Audit database. Subsequent problems that required re-referral were identified from this database. Patients who required reoperation for recurrence a median of 3 (range 1-7) years after surgery were identified. RESULTS: Some 4406 repairs, including 90 recurrences (2.0 per cent), were identified. Open mesh, open sutured and laparoscopic techniques were employed. Senior trainees (registrars and senior registrars) had similar recurrence rates to consultants; supervision did not affect outcome. Junior trainees (senior house officers) had similar recurrence rates to consultants as long as they were supervised by either a senior trainee or a consultant. Unsupervised junior trainees had unacceptably high recurrence rates (open mesh: relative risk (RR) 21.0 (95 per cent confidence interval (c.i.) 7.3 to 59.9), P < 0.001; open sutured: RR 16.5 (95 per cent c.i. 7.2 to 37.8), P < 0.001). CONCLUSION: Senior trainees may operate independently and supervise junior trainees, with recurrence rates equal to those of consultant surgeons. Junior trainees should be encouraged and given more practice in inguinal hernia repair with appropriate supervision.

Education, Medical, Graduate↗

Mobile messaging: emergency image transfer.

This is the first reported integration of picture archiving and communications systems (PACS) with general packet radio services (GPRS)-compliant mobile telephones allowing digital image transmission using multimedia messaging service (MMS) technology for mobile telementoring (advice and teaching).

Cell Phone↗

Liquid chemical sterilization using peracetic acid. An alternative approach to endoscope processing.

Recurrent episodes of endoscope contamination with nontuberculous mycobacterium and Pseudomonas species, coupled with employee concerns about exposure to 2% glutaraldehyde and the requirement for rapid scope turnover time, led to the investigation of an alternative method for endoscope processing. A prospective evaluation of 220 bronchoscopy procedures was carried out. Endoscope culture surveillance was performed twice a month for a 12 month period on all endoscopes. In addition, the deliberate inoculation of bronchoscopes with Mycobacterium gordonae was carried out. No indications of cross contamination were noted among the 220 bronchoscopy procedures after processing the scopes by the studied liquid chemical sterilization system using peracetic acid. Ongoing patient surveillance did not reveal any indications of cross contamination for nearly 15,000 patients diagnostic or surgical endoscopic procedures using instruments processed by this liquid chemical sterilization system. Twice a month for 12 months, bronchoscopes, colonoscopes, and gastroscopes were cultured for bacterium, fungi, and acid fast bacilli and showed no growth. Deliberate inoculation of bronchoscopes with M. gordonae showed the scopes were rendered sterile. No unusual occurrences of occupational chemical exposure were found in 11 individuals working with this liquid chemical sterilization system. The peracetic acid based sterilization system studied proved to be an effective, safe, and economical alternative to the glutaraldehyde method.

Adolescent↗