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Biomedical subjects

N D Merrett

Publications and source records attributed to N D Merrett.

7 recordsLinked to original sources

Repair of giant inguinoscrotal inguinal hernia using marlex mesh and scrotal skin flaps.

A new technique for the repair of giant inguinoscrotal hernia is described. It consists of: reduction of the hernia; repair of the hernial orifices with marlex mesh; creation of a midline anterior wall defect to increase intra-abdominal capacity; covering this defect with marlex mesh; then covering the midline marlex mesh with a rotation flap of inguinoscrotal skin. This technique increases intra-abdominal capacity and allows reduction of the hernia without compromising respiratory function, in patients with chronic airflow limitation, by using skin that would otherwise be discarded.

Adolescent↗

Bacteremia associated with operative decompression of a small bowel obstruction.

BACKGROUND: Intraoperative decompression of the small bowel has been advocated as a method of aiding recovery of both the patient and the intestine. However, the methods proposed (retrograde stripping or enterotomy) require vigorous handling of bacteria-laden small bowel, possibly giving rise to a bacteremia. STUDY DESIGN: A small bowel obstruction was created in 31 rats by means of a ligature. Twenty-four hours later, the obstruction was relieved, and the rats were divided into three groups: relief of obstruction alone, relief with retrograde stripping, and relief with enterotomy plus suction. Blood cultures were taken before and after manipulation of the bowel. RESULTS: In blood cultures taken before and after manipulation there was a significant increase of Escherichia coli bacteremia in the two manipulation groups compared with the relief of obstruction only group. CONCLUSIONS: Bacteremia may be an effect of operative decompression of obstructed bowel, which at times outweighs its supposed benefits.

Animals↗

Left lateral laparoscopic cholecystectomy and its relevance to choledocholithiasis.

One of the current challenges to the laparoscopic biliary surgeon is the management of bile duct stones. While laparoscopic bile duct exploration is in its infancy, pre- and postoperative endoscopic retrograde cholangiopancreatography with or without endoscopic papillotomy (ERCP/EP) currently plays a significant role. Intra-operative ERCP/EP has advantages over pre- and postoperative ERCP/EP; however it has not gained popularity due, partly, to the difficulties associated with ERCP/EP being performed with the patient in the supine position. This study prospectively assessed, in 10 consecutive patients, the feasibility of performing laparoscopic cholecystectomies in the left lateral position, a position amenable to intra-operative ERCP/EP if necessary. It is concluded that laparoscopic cholecystectomy in the left lateral position can be performed safely, with similar ease and results as in the supine position, increasing the options available to manage choledocholithiasis.

Adult↗

Ischaemic complications of graduated compression stockings in the treatment of deep venous thrombosis.

Graduated compression stockings are frequently used in the prevention of deep venous thrombosis and the treatment of venous insufficiency. Two patients are discussed who sustained ischaemic complications after application of graduated compression stockings. Review of the literature demonstrates that low cutaneous pressures significantly decrease local blood flow and that the amount of pressure exerted by graduated compression stockings increases significantly with increases in leg girth. Ischaemic complications associated with the use of these stockings also appears to be more common than previously thought and any policy of routine prescription to patients should be questioned.

Adult↗

A totally diverting loop colostomy.

A technique is described where the distal limb of a loop colostomy is tied with nylon or polydioxanone. This ensures total faecal diversion and dispenses with the supporting rod, enabling early application of stoma appliances. The technique does not interfere with the traditional transverse closure of a loop colostomy.

Colostomy↗