P-162ROBOTIC APPROACH IN THE TREATMENT OF STAGE III LUNG CANCER: A RETROSPECTIVE MULTICENTRE ANALYSIS OF PERIOPERATIVE AND ONCOLOGICAL RESULTS

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Transient Aphonia After Mediastinoscopy

The most common adverse event after cervical mediastinoscopy is recurrent laryngeal nerve (RLN) injury, which has an incidence of 0.6% [1]. We report the case of a 68-year-old man with non-small cell lung cancer (NSCLC) who experienced transient bilateral vocal cord paralysis after mediastinoscopy, which manifested in complete aphonia. This patient\u27s ability to maintain his airway was carefully followed up, but neither endotracheal intubation nor tracheostomy was required. The vocal cord paralysis resolved without intervention after 5 hours. To our knowledge, this is the first reported case in which bupivicaine used at the end of a cervical mediastinoscopy diffused through the freshly dissected planes to paralyze both RLNs along the tracheoesophageal grooves

Four-wave mixing in microresonators with resonance and thermal nonlinearities

The results of theoretical and experimental investigations into four-wave mixing in microresonators with resonant and thermal nonlinearities are presented. Theoretical models of dynamically-induced optical gratings have been derived in two cases of the light beams interaction: when a nonlinear medium is incorporated into Fabry-Perot interferometer and for the off-cavity configuration. Experimental realization of intracavity four-wave mixing performed using ethanol solution of Rodamine 6G as a nonlinear medium. It is shown that the use of nonlinear interferometer increases significantly an efficiency of dynamic optical gratings. The potentialities for obtaining of high efficiency conversion of optical information owing the spectroscopic properties of multilevel resonant media are discussed

Efficacy of lymph node dissection during robotic-assisted lobectomy for non-small cell lung cancer: retrospective review of 159 consecutive cases.

BACKGROUND: We investigated whether robotic-assisted surgery improves mediastinal lymph node dissection (MLND). METHODS: We analyzed patients (pts) who underwent robotic-assisted video-assisted thoracoscopic surgery (R-VATS) lobectomy for non-small cell lung cancer (NSCLC) over 36 months. Perioperative outcomes, tumor histology, numbers, locations, and status of all lymph nodes (LNs), and TNM (tumor, nodal, and metastasis) stage changes were analyzed. RESULTS: One hundred fifty-nine pts had mean tumor size 3.3±0.2 cm, most commonly being adenocarcinoma. Assessment of ≥3 N2 stations occurred in 156 (98.1%) pts, with 141 (88.7%) pts having \u3e3 N2 stations reported. Mean total N1 + N2 stations assessed was 5.6±0.1 stations, including mean 4.1±0.1 N2 stations assessed. Mean N2 LNs reported was 7.2±0.3 LNs, and mean total N1 + N2 LNs reported was 13.4±0.4 LNs. There were 118 (74.2%) clinical stage-I pts versus 96 (60.4%) pathologic stage-I pts. Overall, 48 (30.2%) pts were upstaged, including 13 pts with cN0-pN1, 13 pts with cN0-pN2, 4 pts with cN1-pN2, and 18 pts with changes in T. CONCLUSIONS: R-VATS lobectomy is safe and results in perioperative outcomes comparable to those reported for conventional VATS. R-VATS MLND is effective at detecting occult metastatic disease during lobectomy for NSCLC

Surgical outcomes associated with postoperative atrial fibrillation after robotic-assisted pulmonary lobectomy: retrospective review of 208 consecutive cases.

BACKGROUND: In this study, we sought to investigate the effect of post-operative atrial fibrillation (POAF) after robotic-assisted video-thoracoscopic pulmonary lobectomy on comorbid postoperative complications, chest tube duration, and hospital length of stay (LOS). METHODS: We retrospectively analyzed prospectively collected data from 208 consecutive patients who underwent robotic-assisted pulmonary lobectomy by one surgeon for known or suspected lung cancer. Postoperatively, 39 (18.8%) of these patients experienced POAF during their hospital stay. The occurrence of postoperative complications other than POAF, chest tube duration, and hospital LOS were analyzed in patients with POAF and without POAF. Statistical significance (P≤0.05) was determined by unpaired Student\u27s t-test or by Chi-square test. RESULTS: Of patients with POAF, 46% also had other concurrent postoperative complications, while only 31% of patients without POAF experienced complications. The average number of postoperative complications experienced by patients with POAF was significantly higher than that experienced by those without POAF (0.9 vs. 0.4, P CONCLUSIONS: This study demonstrated the association between the incidence of POAF and a more complicated hospital course. Further studies are needed to determine whether confounders were involved in this association

Effect of small body habitus on peri-operative outcomes after robotic-assisted pulmonary lobectomy: retrospective analysis of 208 consecutive cases.

BACKGROUND: Patients with smaller body surface area (BSA) have smaller pleural cavities, which limit visualization and instrument mobility during video-assisted thoracoscopic surgery (VATS). We investigated the effects of BSA on outcomes with robotic-assisted VATS lobectomy. METHODS: We analyzed 208 consecutive patients who underwent robotic-assisted lobectomy over 34 months. Patients were separated into group A (BSA ≤1.65 m(2)) and group B (BSA \u3e1.65 m(2)). Operative times, estimated blood loss (EBL), conversions to thoracotomy, complications, hospital length of stay (LOS), and in-hospital mortality were compared. RESULTS: Group A had 40 patients (BSA 1.25-1.65 m(2)), and group B had 168 patients (BSA 1.66-2.86 m(2)). Median skin-to-skin operative times [± standard error of the mean (SEM)] were 169±16 min for group A and 176±6 min for group B (P=0.34). Group A had median EBL of 150±96 mL compared to 200±24 mL for group B (P=0.37). Overall conversion rate to thoracotomy was 8/40 (20.0%) in group A versus 12/168 (7.1%) in group B (P=0.03); while emergent conversion for bleeding was 2/40 (5.0%) in group A versus 5/168 (3.0%) in group B (P=0.62). Postoperative complications occurred in 12/40 (30.0%) in group A, compared to 66/168 (39.3%) in group B (P=0.28). Patients from both groups had median hospital LOS of 5 days (P=0.68) and had similar in-hospital mortality. CONCLUSIONS: Patients with BSA ≤1.65 m(2) have similar perioperative outcomes and complication risks as patients with larger BSA. Patients with BSA ≤1.65 m(2) have a higher overall conversion rate to thoracotomy, but similar conversion rate for bleeding as patients with larger BSA. Robotic-assisted pulmonary lobectomy is feasible and safe in patients with small body habitus

Effect of Obesity on Perioperative Outcomes After Robotic-Assisted Pulmonary Lobectomy.

OBJECTIVE: We investigated whether higher body mass index (BMI) affects perioperative and postoperative outcomes after robotic-assisted video-thoracoscopic pulmonary lobectomy. METHODS: We retrospectively studied all patients who underwent robotic-assisted pulmonary lobectomy by one surgeon between September 2010 and January 2015. Patients were grouped according to the World Health Organization\u27s definition of obesity, with obese being defined as BMI \u3e30.0 kg/m RESULTS: Over 53 months, 287 patients underwent robotic-assisted pulmonary lobectomy, with 7 patients categorized as underweight, 94 patients categorized as normal weight, 106 patients categorized as overweight, and 80 patients categorized as obese. Because of the relatively low sample size, underweight patients were excluded from this study, leaving a total cohort of 280 patients. There was no significant difference in intraoperative complication rates, conversion rates, perioperative outcomes, or postoperative complication rates among the 3 groups, except for lower risk of prolonged air leaks ≥7 days and higher risk of pneumonia in patients with obesity. CONCLUSIONS: Patients with obesity do not have increased risk of intraoperative or postoperative complications, except for pneumonia, compared with normal weight and overweight patients. Robotic-assisted pulmonary lobectomy is safe and effective for patients with high BMI