PurposeTo evaluate the outcomes of patients who underwent thoracoscopic wedge resection without chest drain placement.MethodsThe subjects of this retrospective study were 89 patients, who underwent thoracoscopic wedge resection at our hospital between January, 2013 and July, 2015. A total of 45 patients whose underlying condition did not meet the following criteria were assigned to the “chest drain placement group” (group A): peripheral lesions, healthy lung parenchyma, no intraoperative air leaks, hemorrhage or effusion accumulation, and no pleural adhesion. The other 44 patients whose underlying condition met the criteria were assigned to the “no chest drain placement group” (group B). Patient characteristics, specimen data, and postoperative conditions were analyzed and compared between the groups.ResultsGroup A patients had poorer forced expiratory volume in one second (FEV1) values, less normal spirometric results, significantly higher resected lung volume, a greater maximum tumor-pleura distance, and a larger maximum tumor size. They also had a longer postoperative hospital stay. There was no difference between the two groups in postoperative complications.ConclusionsAvoiding chest drain placement after a thoracoscopic wedge resection appears to be safe and beneficial for patients who have small peripheral lesions and healthy lung parenchyma.
Featured Application: This biosensor was used for the detection of dopamine without interference from high concentrations (0.5 mM) of ascorbic acid. In addition, the electrode developed in this study presented a great sensitivity (22 nM) and a broad linear range compared with existing electrochemical sensors in the detection of dopamine. Moreover, the analysis of dopamine in physiological samples was examined.Abstract: Tyrosinase, chitosan, and reduced graphene oxide (rGO) are sequentially used to modify a screen-printed carbon electrode (SPCE) for the detection of dopamine (DA), without interference from uric acid (UA) or ascorbic acid (AA). The use of tyrosinase significantly improves the detection's specificity. Cyclic voltammetry (CV) measurements demonstrate the high sensitivity and selectivity of the proposed electrochemical sensors, with detection limits of 22 nM and broad linear ranges of 0.4-8 µM and 40-500 µM. The fabricated tyrosinase/chitosan/rGO/SPCE electrodes achieve satisfactory results when applied to human urine samples, thereby demonstrating their feasibility for analyzing DA in physiological samples.
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