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Eur J Cardiothorac Surg 2004;26:393-395
© 2004 Elsevier Science NL
a Department of Thoracic Surgery, Glenfield Hospital, Groby Road, Leicester LE3 9QP, UK
b The Price-Thomas Thoracic Surgical Unit, Northern General Hospital, Sheffield, UK
Received 20 January 2004; received in revised form 11 March 2004; accepted 15 March 2004.
* Corresponding author. Tel.: +44-116-256-3959; fax: +44-116-236-7768
e-mail: david.waller{at}uhl-tr.nhs.uk
Objective: Cervical mediastinoscopy is an important diagnostic and staging technique. Limited operative field and visibility have traditionally made it a difficult procedure to learn and supervise. Video-assisted techniques can aid training in the procedure. We designed a prospective study to assess the usefulness of video-assisted mediastinoscopy (VAM) as a training tool. Methods: 43 patients were operated upon by two trainees during their initial formation in general thoracic surgery (25 patients in 15 months, and 18 patients in 9 months, respectively). Indications: staging (n=23), diagnosis of enlarged mediastinal nodes (n=14), and diagnosis/staging (n=6). End-points of the study: operative time, need of consultant assistance during procedures, and ability of the trainee to identify all nodal stations independently. Results: There were no complications. The mean operative time was 29 (range 18–51) min. Valid histological samples were obtained in all cases. There were no false negative results in the 13 patients who underwent subsequent lung resection (sensitivity 100%). Operative time (R2=0.83 and 0.77), need for consultant assistance (R2=0.98 and 0.94), and failure to independently reach all nodal stations (R2=0.95 and 0.94) significantly decreased with experience in both trainees' cases (cubic curve fit; P<0.001 throughout). Discussion: VAM permits a rapid learning and adequate supervision of the technique without compromising safety, operative time or completeness of the procedure. The main advantages are: increased visual field, image magnification, adequate light source and the ability to use two instruments simultaneously. VAM should be the technique of choice in thoracic surgical teaching units.
Key Words: Learning curve • Teaching • Cervical mediastinoscopy
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