• M M Tahir, M A Bigrigg, J J Browning, S T Brookes, and P A Smith.
• Department of Women's Health, Southmead Hospital, Bristol.
• Br J Obstet Gynaecol. 1999 Dec 1;106(12):1259-64.

ObjectiveTo compare the use of outpatient and inpatient procedures in the investigation of abnormal uterine bleeding.DesignA randomised controlled trial.SettingTwo university teaching hospitals.ParticipantsFour hundred women with abnormal uterine bleeding (postmenopausal bleeding, menorrhagia, intermenstrual bleeding, postcoital bleeding, or irregular periods) above the age of 35 years, between June 1993 and January 1995.Main Outcome Measures1. Incidence of detection of abnormal pathology by vaginal ultrasound, outpatient hysteroscopy and endometrial biopsy compared with inpatient hysteroscopy and curettage; 2. Number of 'lesions' (e.g. fibroids, polyps, endometrial hyperplasia or malignancy) found by hysteroscopy that would have been missed by the combination of endometrial sampling and ultrasound; 3. Comparison of the quality of tissue obtained for histology by outpatient endometrial sampling and inpatient curettage; and 4. An evaluation of patient acceptability of outpatient and inpatient procedures.Results1. A combination of transvaginal sonography, Pipelle endometrial biopsy and outpatient hysteroscopy has similar efficacy to inpatient hysteroscopy and curettage for the investigation of abnormal uterine bleeding; 2. Hysteroscopy will detect some fibroids and polyps missed by a combination of transvaginal ultrasound and Pipelle endometrial sampling; 3. The quality of histological samples obtained by outpatient Pipelle were comparable to those obtained by formal inpatient curettage; and 4. Outpatient procedures were well tolerated, with good patient acceptability.ConclusionTransvaginal sonography and endometrial biopsy can safely be used as the initial investigations in the management of abnormal uterine bleeding. Hysteroscopy can be used as a second line investigation. Outpatient hysteroscopy with local anaesthesia is well tolerated although general anesthesia may occasionally be necessary.

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