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  • Title: Pulmonary function after pulmonary resection by posterior thoracotomy, anterior thoracotomy or video-assisted surgery.
    Author: Endoh H, Tanaka S, Yajima T, Ito T, Tajima K, Mogi A, Shitara Y, Kuwano H.
    Journal: Eur J Cardiothorac Surg; 2010 May; 37(5):1209-14. PubMed ID: 20022519.
    Abstract:
    OBJECTIVE: Predicted postoperative forced expiratory volume in 1s (ppoFEV1) is estimated in lung cancer patients before pulmonary resection, as well as the clinical stage. This study aims to evaluate ppoFEV1 and ppo-vital capacity (ppoVC) on postoperative day 7 (POD7) and to compare the results following video-assisted thoracic surgery (VATS) and open thoracotomy procedures. METHODS: Of the 155 patients who underwent pulmonary resection, 70 had VATS; 30 had muscle-sparing thoracotomy (anterior limiting thoracotomy (AL)); and 55 had postero-lateral thoracotomy (PL). VC and FEV1 were measured on POD7 and compared with the VC and FEV1 before surgery using analysis of covariance (ANCOVA). The ratio of the actual- and the ppoVC and FEV1 was evaluated to identify factors associated with variations in postoperative residual VC/FEV1. RESULTS: There were significant differences by analysis of covariance (ANCOVA) in the VC/FEV1 among the three surgical approaches. In the VATS group, the VC ratio and the FEV1 ratio were 96.5% and 94.7%, respectively; they were significantly higher in the VATS group than in the thoracotomy group (AL: 90.4% and 90.1%, respectively; PL: 87.4% and 87.6%, respectively). Non-chronic obstructive pulmonary disease (COPD) and upper lobectomy were also associated with a low VC ratio and FEV1 ratio. CONCLUSION: Predicted postoperative pulmonary function might be overestimated in COPD patients or in those undergoing VATS or lower lobectomy.
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