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Biomedical subjects

D Singh-Ranger

Publications and source records attributed to D Singh-Ranger.

9 recordsLinked to original sources

Assessment of preoperative fluid depletion using bioimpedance analysis.

BACKGROUND: Fluid depletion during the perioperative period is associated with poorer outcome. Non-invasive measurement of total body water by bioimpedance may enable preoperative fluid depletion and its influence on perioperative outcome to be assessed. METHODS: Weight and foot bioimpedance were recorded under standardized conditions in patients undergoing bowel preparation (n=43) or day surgery (n=44). Fifteen volunteers also followed standard nil-by-mouth instructions on two separate occasions to assess the variabilities of weight and bioimpedance over time. RESULTS: Body weight fell by 1.27 kg (95% CI 1.03-1.50 kg; P<0.0001) and foot bioimpedance increased by 51 ohm after bowel preparation (95% CI 36-66; P<0.0001). Weight change after the nil-by-mouth period in day-surgery patients (mean -0.22 kg, 95% CI -0.05 to -0.47 kg; P=0.07) correlated (r=-0.46; P=0.005) with an increase in bioimpedance (16 ohms, 95% CI 5-27 ohms; P=0.01). No difference between two separate bioimpedance measurements was seen in the volunteer group. CONCLUSIONS: Further work is warranted to determine if bioimpedance changes may serve as a useful indicator of perioperative fluid depletion.

Adult↗

A simple technique for the retention of a subcuticular suture.

The retention of a subcuticular stitch using absorbable suture has been performed using a variety of methods. These techniques may be difficult to master by surgeons new to the skill and have been associated with problems such as "dog ears" and a bulky knot that becomes difficult to bury. The latter can also be responsible for wound gapping especially of small wounds. The procedure described here provides a secure mechanism for retaining the subcuticular suture with minimal bulk to the knot. It is easy to master, does not produce wound gaping and is suitable for all wound sizes.

Absorbable Implants↗

Abdominal tuberculosis: the problem of diagnostic delay.

Abdominal tuberculosis can be difficult to diagnose. In order to minimize diagnostic delay, an audit study showed that the Mantoux test and/or culture of ascitic fluid did not reveal tuberculosis immediately. Laparoscopy/laparotomy with Ziel-Nielson staining and culture of tissue biopsy always confirmed the diagnosis. It is suggested that biopsy should be the first line in investigating patients suspected of having abdominal tuberculosis.

Adult↗