The management of antenatal venous thromboembolism in the UK and Ireland: a prospective multicentre observational survey.

This prospective observational study reports on 126 women from 25 UK centres with image-proven antenatal venous thromboembolism (VTE), 62% deep vein thrombosis and 38% pulmonary embolism. Thrombophilia screening was of limited benefit except to identify antithrombin deficiency. Sixteen (13%) patients had previous VTE, all but one was related to previous pregnancy or combined oral contraceptive and 12 received no thromboprophylaxis in the index pregnancy, the other four thus received inadequate low molecular weight heparin (LMWH) doses.