Compensation of pulmonary function after upper lobectomy versus lower lobectomy Kazuhiro Ueda, MD, Toshiki Tanaka, MD, Masataro Hayashi, MD, Tao-Sheng.

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Presentation transcript:

Compensation of pulmonary function after upper lobectomy versus lower lobectomy Kazuhiro Ueda, MD, Toshiki Tanaka, MD, Masataro Hayashi, MD, Tao-Sheng Li, MD, Takehiro Kaneoka, Nobuyuki Tanaka, MD, Kimikazu Hamano, MD The Journal of Thoracic and Cardiovascular Surgery Volume 142, Issue 4, Pages 762-767 (October 2011) DOI: 10.1016/j.jtcvs.2011.04.037 Copyright © 2011 Terms and Conditions

Figure 1 Measurement of FLV, which is obtained by summing the functional lung area (−910 to −600 HU). Naturally, functional lung area does not include the nonfunctional lung area (<−910 or >−600 HU), such as emphysema, fibrosis, lung tumor, atelectasis, and large pulmonary vessels. FLV of the affected lobes and FLV of the remaining lobes are measured separately before operation. HU, Hounsfield units; 3D, 3-dimensional. The Journal of Thoracic and Cardiovascular Surgery 2011 142, 762-767DOI: (10.1016/j.jtcvs.2011.04.037) Copyright © 2011 Terms and Conditions

Figure 2 Postoperative change in FLV and FEV1 of the remaining lung after lobectomy. FEV1, Forced expiratory volume in 1 second; FLV, functional lung volume. The Journal of Thoracic and Cardiovascular Surgery 2011 142, 762-767DOI: (10.1016/j.jtcvs.2011.04.037) Copyright © 2011 Terms and Conditions

Figure 3 Correlation between postoperatively measured FLV (% of estimated postoperative FLV) and postoperatively measured FEV1) (% of estimated postoperative FEV1. Significant correlation between the parameters is noted (Y = 0.85 X + 13.1, R = 0.604, P < .0001). FEV1, Forced expiratory volume in 1 second; FLV, functional lung volume. The Journal of Thoracic and Cardiovascular Surgery 2011 142, 762-767DOI: (10.1016/j.jtcvs.2011.04.037) Copyright © 2011 Terms and Conditions

Figure 4 Postoperative change in FLV (A) and FEV1 (B) of the remaining lung after upper lobectomy versus that after lower lobectomy. FEV1, Forced expiratory volume in 1 second; FLV, functional lung volume. The Journal of Thoracic and Cardiovascular Surgery 2011 142, 762-767DOI: (10.1016/j.jtcvs.2011.04.037) Copyright © 2011 Terms and Conditions

Figure 5 Correlation between postoperatively measured FLV (% of estimated postoperative FLV) and postoperatively measured FEV1 (% of estimated postoperative FEV1), with special reference to the presence (solid circles) or absence (open circles) of pulmonary emphysema. FEV1, Forced expiratory volume in 1 second; FLV, functional lung volume. The Journal of Thoracic and Cardiovascular Surgery 2011 142, 762-767DOI: (10.1016/j.jtcvs.2011.04.037) Copyright © 2011 Terms and Conditions