The efficacy of graduated compression stockings in the prevention of postoperative deep vein thrombosis was studied in a randomized, prospective, controlled trial of 200 patients, aged 40 years and over, undergoing abdominal surgery (100 for benign disease, 100 for malignant conditions). Deep vein thrombosis was diagnosed by the 125I-fibrinogen test. The incidence of deep vein thrombosis was 35.9 per cent in the control group (103 patients) and 15.5 per cent in the stockinged group (97 patients) (P less than 0.025). In the patients with benign disease, deep vein thrombosis developed in 24.5 per cent of the control limbs and 6.1 per cent of stockinged limbs (P less than 0.005); in patients with malignant disease the similar figures were 27.9 and 11.5 per cent (P less than 0.05). Increasing age did not alter the efficacy of the stockings. It is concluded that graduated compression stockings provide a safe and effective method of prophylaxis against deep vein thrombosis.

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SUMMARY Ten women with acute right upper-quadrant abdominal pain but negative results for biliary investigations had a current or past history of pelvic inflammatory disease. A diagnosis of the Curtis-Fitz-Hugh syndrome was made and was confirmed in five patients by laparoscopy.Neisseria gonorrhoeae was not isolated from the cervical and urethral swabbings of seven patients tested. Chiamydia trachomatis was isolated from the endocervical canal in one of six patients examined. Of sera from nine patients tested by a micro-immunofluorescence test, nine and six samples respectively showed type-specific IgG and IgM antibodies against C trachomatis serotypes D-K. Type-specific IgG and IgA antibodies were also detected in the cervical and urethral discharge of two out of five patients and in the peritoneal aspirate of two. The presence of high titres of IgG or IgM in sera and IgG or IgA in the local discharges of our patients suggests that C trachomatis was probably the cause of the CFH syndrome.

The feasibility and safety of early discharge from hospital following inguinal hernia repair in selected patients is well established. The following is an account of 104 unselected patients who presented consecutively to an Inner London hospital with inguinal hernias. The intention was to discharge all patients 48 h after operation, but for a variety of reasons a later discharge day was planned preoperatively in 50. Of the 104 patients, 62 (60 per cent) were discharged on the planned day, but only 23 per cent left hospital 48 h after operation. The factors which accounted for this are discussed. It was possible, however, to discharge over 85 per cent within 5 days of operation.

Ten patients with biliary-type pain, in whom investigations of the biliary tract were negative, are reported. All the patients were sexually active premenopausal women and all had evidence of infection with chlamydia trachomatis. Five patients submitted to laparoscopy had fibrinous adhesions between the anterior surface of the liver and the parietal peritoneum (perihepatitis). All 10 patients were diagnosed as suffering from the Curtis-Fitz-Hugh syndrome caused by Chlamydia trachomatis. The clinical similarities between the Curtis-Fitz-Hugh syndrome (right upper quadrant abdominal pain, perihepatitis and genital tract infection) and acute biliary disease are emphasized and the diagnostic implications discussed.