Evaluation of a novel atrial retractor for exposure of the mitral valve in a porcine model

E Bean, GPA Chanoit, SR Jernigan, G Bolotin, JA Osborne, G Buckner

    Research output: Contribution to journalArticle (Academic Journal)peer-review

    Abstract

    OBJECTIVES To describe a novel atrial retractor and compare 2 methods of intraoperative left atrial retraction for minimally invasive mitral valve repair. METHODS: Left atrial retraction was performed on 5 swine cadavers to evaluate performance (percent of mitral valve annulus accessible), complications encountered, ease of use, and surgical time for the minimally invasive atrial retractor and a HeartPort atrial retractor. RESULTS: Estimated accessibilities were 93.0% (standard error = 3.2) and 92.7% (standard error = 3.3) for the HeartPort and minimally invasive atrial retractor retractors, respectively, with a difference of 0.3% (standard error = 2.2%, P = .8832, df = 34). Tissue damage occurred in 1 case for the minimally invasive atrial retractor and 2 cases for the HeartPort retractor. The mean surgical times for retractor placement and mitral valve annulus exposure were 107.4 and 39.2 seconds for the HeartPort and minimally invasive atrial retractor retractors, respectively, with a difference of 68.2 seconds (P = .0092, df = 4). CONCLUSIONS: The minimally invasive atrial retractor is a suitable alternative for atrial retraction compared with standard techniques of retraction. It provides comparable exposure of the mitral valve annulus, is less time consuming to place, provides subjectively more working volume within the left atrium, and has the advantage of minimal atriotomy incision length and customizable retraction.
    Translated title of the contributionEvaluation of a novel atrial retractor for exposure of the mitral valve in a porcine model
    Original languageEnglish
    Pages (from-to)1492 - 1495
    Number of pages4
    JournalJournal of Thoracic and Cardiovascular Surgery
    Volume136
    Issue number6
    DOIs
    Publication statusPublished - Dec 2008

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