{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,26]],"date-time":"2026-06-26T23:42:06Z","timestamp":1782517326988,"version":"3.54.5"},"reference-count":24,"publisher":"Oxford University Press (OUP)","issue":"8","license":[{"start":{"date-parts":[[2011,5,27]],"date-time":"2011-05-27T00:00:00Z","timestamp":1306454400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/academic.oup.com\/journals\/pages\/open_access\/funder_policies\/chorus\/standard_publication_model"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2011,7,1]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>Routine preoperative duplex examination led to an improvement in results 2 years after surgery for primary varicose veins. The aim of the present study was to evaluate the impact of preoperative duplex imaging after 7 years, in relation to other risk factors for varicose vein recurrence.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Patients with primary varicose veins were randomized to operation with (group 1), or without (group 2) preoperative duplex imaging. The same patients were invited to attend follow-up with interview, clinical examination and duplex imaging. Quality of life (QoL) was measured with the Short Form 36 questionnaire.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Some 293 patients (343 legs) were included initially; after 7 years 227 were interviewed, or their records reviewed: 114 in group 1 and 113 in group 2. One hundred and ninety-four legs (95 in group 1 and 99 in group 2) were examined clinically and with duplex imaging. Incompetence was seen at the saphenofemoral junction and\/or saphenopopliteal junction in 14 per cent of legs in group 1 and 46 per cent in group 2 (P &amp;lt; 0\u00b7001). QoL was similar in both groups. After a mean follow-up of 7 years (and including patients who underwent surgery after the review), 15 legs in group 1 needed reoperation and 38 in group 2 (P = 0\u00b7001).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Routine preoperative duplex imaging improved the results of surgery for primary varicose veins for at least 7 years. Registration number: NCT01195623 (http:\/\/www.clinicaltrials.gov).<\/jats:p><\/jats:sec>","DOI":"10.1002\/bjs.7579","type":"journal-article","created":{"date-parts":[[2011,5,27]],"date-time":"2011-05-27T10:05:23Z","timestamp":1306490723000},"page":"1112-1116","source":"Crossref","is-referenced-by-count":19,"title":["Late follow-up of a randomized trial of routine duplex imaging before varicose vein surgery"],"prefix":"10.1093","volume":"98","author":[{"given":"L","family":"Blomgren","sequence":"first","affiliation":[{"name":"Department of Vascular Surgery, Karolinska University Hospital, Stockholm, Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"G","family":"Johansson","sequence":"additional","affiliation":[{"name":"Department of Surgery, Capio St G\u00f6ran's Hospital, Stockholm, Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"L","family":"Emanuelsson","sequence":"additional","affiliation":[{"name":"Department of Surgery, Capio St 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