Abstract： Objective To investigate strategies for prevention，early diagnosis，and prompt treatment for acute pulmonary embolism（PE）after video-assisted thoracoscopic surgery（VATS）lobectomy. Methods From January 2007 to November 2010, 1 115 patients with lung cancer underwent VATS lobectomy in the First Affiliated Hospital of Guangzhou Medical College. Among them, 13 patients had acute PE postoperatively, including 6 male patients and 7 female patients with their mean age of 62.3 years（ranging from 42 to 73 years）.All the patients were diagnosed by spiral CT pulmonary artery angiography（SCTPA）, and received anticoagulation therapy with low molecular weight heparin and warfarin. Results The incidence of acute PE after VATS lobectomy was 1.17%（13/1 115）, and the patients with low PE-related early mortality risk accounted for a large proportion（11/13）. There were 12 patients with right-side PE. All the patients’ signs and symptoms were significantly alleviated after administration of anticoagulation therapy. Nine patients received SCTPA review after treatment which showed that their PE had disappeared or been significantly absorbed. No hematological complications including thoracic hemorrhage or wound errhysis occurred after treatment. All surviving patients were followed up for 1 month to 3 months. During follow-up, these patients were alive without PE recurrence. Conclusion SCTPA is the first-choice examination for the diagnosis of acute PE after VATS lobectomy. Prophylaxis against PE and prompt treatment are necessary depending on individual manifestations. VATS lobectomy should be favored as a minimally invasive surgical treatment for patients with lung cancer, for the low incidence of postoperative PE and low PE-related early mortality risk.
Objective To investigate cost-effectiveness of no indwelling urinary catheter in pulmonary lobectomy patients and to confirm the advances of no indwelling urinary catheter. Methods We recruited 148 lung cancer patients who were scheduled for pulmonary lobectomy under general anesthesia in West China Hospital from July through December 2015. These patients were divided into two groups including an indwelling urinary catheter group (74 patients, 45 males and 29 females, at age of 52.55±19.87 years) and a no indwelling urinary catheter group (74 patients, 42 males and 32 females, at age of 54.03±16.66 years). Indexes of cost-effectiveness of the two groups were compared. Results There was no statistical difference between the two groups in duration of indwelling catheter (1.56±0.0.65 d versus 1.68±0.91 d, P=0.077). Material expense(4 811.48 yuan versus 296.74 yuan, P=0.045), cost of nursing care (7 413.32 yuan versus 457.32 yuan, P=0.013), and total expense (12 224.8 yuan versus 754.06 yuan, P=0.000) in the indwelling catheter group were higher than those in the no indwelling catheter group. Material expense per patient (65.02±5.62 yuan/patient-time versus 4.01±0.00 yuan/patient-time, P=0.000), cost of nursing care per patient (100.18±7.19 yuan/patient-time versus 6.18±1.22 yuan/patient-time, P=0.000), and total cost per patient (165.20±12.81 yuan/patienttime versus 10.19±1.22 yuan/patient-time, P=0.000) in the indwelling catheter group were higher than those in the no indwelling catheter group. Conclusion Both costs and labor of nurse can be cut down for appropriate lung cancer patients undergoing lobectomy without routine indwelling urinary catheter.
Chinese Medical Association guideline for clinical diagnosis and treatment of lung cancer (2022 edition) has been published this year. The 2022 edition has been updated in the aspects of lung cancer screening, pathology, standards of thoracic surgery, treatment of metastatic lung cancer. In this study, we tried to introduce those updated aspects in the guideline of 2022 edition.
Objective To analyze the strategy and skill of resection for lung cancer invading the superior vena cava (SVC) and improve the surgical treatment results. Methods An analysis of 35 patients who underwent surgery for lung cancer invading the SVC was performed. The pressure of SVC before and during operation, and the time of clamping the SVC were recorded. The conjunctival oedema was observed. 14 mm or 16 mm diameter terylene or expanded polytetrafluoroethylene graft artificial vessel were used to replace SVC.The continuous everted suture was applied with 4-0 Prolene. The embolism of artificial vessel and stomal hemorrhage were observed after operation. Results The SVC replacement with prothesis were performed in 20 patients in which the SVC hadn’t clamped in 5 patients. The clamping time was 8-35 mins for another 15 patients with SVC clamped.The clamping time were 1735 mins and 8-20mins respectively for patients with or without conjunctival oedema.The pressure of SVC was 20-45cmH2O before operation and the maximal pressure was 37-56cmH2O during operation for patients with clamping SVC. The maximal pressure during operation was 48-56cmH2O and 37-47cmH2O for patients with or without conjunctival edema, the difference was significant (P=0.000).No mortality or embolism of artificial vessel,but the stomal hemorrhage was found for one patients cured by reoperation. Thirtytwo patients was followed up for 4-130 months,the median survival time was 35 months. Conclusion No clamping of SVC or short time clamping with some operative skill can avoid the occurrence of cerebral edema. Selecting suitable length and roughness of the expanded polytetrafluoroethylene artificial vessel and continuous everted suture with suitable slide suture is important for avoiding the occurrence of embolism and the stomal hemorrhage.
Objective An animal model of lung cancer was established to study whether wasabi could inhibit the expression of hnRNP A2/B1 in lung.Methods Thirty-six Wistar rats were randomly divided as model group and wasabi group.0.1 mL of arcinogenic iodized oil [50 mg 3-methylcholanthrene (MCA) in 1 mL carcinogenic iodized oil] were instilled intratracheally to induce lung cancer.A week before instillation of MCA，the wasabi group was orally administered wasabi extract solution until the animals were killed while the model group was given isometric saline at the same time.Six rats in each group were randomly killed on 30th day，60th day and 90th day.Immunohistochemisty and RT-PCR were used to measure the protein and mRNA expression of hnRNP A2/B1，respectively.Results Wasabi lowered the protein expression of hnRNP A2/B1 with a total inhibitory rate of 48.5%.At the 30th，60th and 90th day，the inhibitory rate was 51.0%，51.0% and 45.1% respectively.Meanwhile，wasabi lowered the mRNA expression of hnRNP A2/B1 with a total inhibitory rate of 60.5%.At the 60th and 90th day，the inhibitory rate was 79.5% and 58.0%，respectively.Conclusion Wasabi solution can down-regulate the expression of hnRNP A2/B1 which may be a molecular mechanisms by which wasabi inhibits lung cancer.
Objective To evaluate the clinical significance of operative indication in patients with lung cancer accompanied by lung dysfunction using cardiopulmonary exercise test (CPET). Methods Before operation, using CPET with step program, work rate(W%), maximal oxygen uptake(VO2%P), maximal oxygen uptake per kilogram(VO2/kg) and other indexes were tested in the end of load exercise in 195 patients with lung cancer accompanied by lung dysfunction. Chi-square test and logistic regression analysis were performed for the abnormal rate of indexes mentioned above in patients with or without postoperative respiratory failure. Results After pneumonectomy, W%,VO2%P, VO2/kg, metabolic equivalent (MET), minute ventilation(VE) and respiratory frequency(BF) in patients with postoperative respiratory failure were lower than those in patients with non-postoperative respiratory failure (Plt;0.05 or 0.01). Logistic regression analysis showed that VElt;30 L/min and (BFlt;30) times/min were more related to the morbidity of postoperative respiratory failure than other indexes. As for the patients with lung dysfunction treated by lobectomy, this indexes didn’t show any significant difference between patients with or without postoperative respiratory failure. However, this indexes decreased in patients with postoperative respiratory failure whose ratio of forced expiratory volume in one second to forced vital capacity (FEV1%) were lower than 60%(Plt;0.05 or 0.01). Logistic regression analysis showed that VO2%Plt;60% related to the morbidity of postoperative respiratory failure. Conclusion CPET is useful to evaluate the operative indication in patients with lung cancer accompanied by lung dysfunction. VO2%Plt;60% should be selected as a evaluating index.
Objective To investigate the impact of complete video-assisted thoracoscopic lobectomy and open lobectomy on perioperative heart rate （HR） and blood oxygen saturation （SO2） of lung cancer patients，and explore whether minimally invasive surgery can enhance postoperative recovery of lung cancer patients. Methods A total of 138 lung cancer patients were chosen from 161 consecutive patients with pulmonary diseases who were admitted to West China Hospital of Sichuan University between September 2010 and December 2011. According to different surgical approach，all the 138 lung cancer patients were divided into routine thoracotomy group （thoracotomy group，70 patients including 53 males and 17 females with their average age of 56.1±9.7 years） and complete video-assisted thoracoscopic lobectomy group （VATS group，68 patients including 46 males and 22 females with their average age of 53.4±6.5 years）. There was no statistical difference in preoperative clinical characteristics between the 2 groups. Preoperative and postoperative （1st，3rd，7th and 30th day） numeric pain rating scale （NPRS），HR and SO2 were compared between the 2 groups. Results （1） There was no statistical difference in NPRS on the 1st and 3rd postoperative day between the 2 groups （3.83±0.79 vs. 3.93±0.67， 2.88±0.59 vs. 3.03±0.71，P＞0.05），but on the 7th and 30th postoperative day，NPRS of the thoracotomy group was signi- ficantly higher than that of VAST group （1.61±0.33 vs. 1.22±0.12，1.58±0.26 vs. 1.19±0.31，P＜0.05）. （2） Postop- erative sedentary HR of both VATS group and thoracotomy group were significantly higher than preoperative levels ［（84.13±17.21） / minute vs. （73.67±10.32）/minute， （86.13 ±19.67） / minute vs. （72.24±14.21） / minute， P＜0.05］. Postoperative HR of VATS group decreased to preoperative level on the 3rd postoperative day，while postoperative HR of the thoracotomy group decreased to preoperative level on the 7th postoperative day. （3） There was no statistical difference between preoperative and postoperative （all the time points） sedentary SO2 of both VATS group and thoracotomy group （96.34 %±2.11% vs. 97.12%±2.31%，95.33%±4.13% vs. 94.93% ±4.31%，P＞0.05）.（4） The changes of HR and SO2 before and after exercise of VATS group were significantly smaller than those of the thoracotomy group on the 3rd postoperative day ［（11.11±4.81）/minute vs. （18.23±6.17）/minute，3.1%±1.2% vs. 7.4 %±2.7%，P＜0.05］ . Conclusion The impact of complete video-assisted thoracoscopic lobectomy on cardiopulmonary function is comparatively smaller，which is helpful for postoperative fast-track recovery of lung cancer patients.
Abstract： Sarcoidosis is a common systemic disease with noncaseating granulomatous epithelioid nodule and coexisting granulomatous inflammation. Although sarcoidosis can affect any organ of the body， more than 90% of the patients demonstrate thoracic involvement， which is often confusing with lung cancer and other diseases. Therefore, thoracic surgeons must have a clear understanding of sarcoidosis. Moreover， due to the special role of surgery in obtaining pathological specimens， thoracic surgeon plays an important role in the diagnosis and treatment of sarcoidosis. It is not difficult to make diagnosis for patients with typical clinical features of sarcoidosis. However， the majority of patients do not have specific manifestations of sarcoidosis. The cause of sarcoidosis remains unknown， and there is also no specific treatment strategy for it. But recent research has shown that annexin A11 gene may be involved in the pathogenesis of sarcoidosis， and tumor necrosis factor （TNF） inhibitor is effective in the treatwent of sarcoidosis.
Objective To study the prevalence of combined pulmonary fibrosis and emphysema (CPFE) in a community-based lung cancer screening program in Shanghai. Methods From June 2018 to July 2019, eligible participants who were assessed through a high-risk lung cancer questionnaire in Xuhui, Shanghai underwent low-dose computed tomography of the lungs. The suspected CPFE patients were invited to provide medical history and blood for analysis, and received high-resolution CT (HRCT) scanning for confirmation. Results Of the 15 cases of suspected CPFE from a total of 4478 participants in which 1704 males and 2774 females, 4 declined further examination and 11 received further examine. Eight subjects were confirmed as CPFE, and all were male, of whom two were ex-smokers and six were active smokers. These CPFE patients had cough, chest tightness and dyspnea. There were 3 cases of centrilobular emphysema, 2 cases of paraseptal emphysema, 1 case of panlobular emphysema and 2 cases of mixed emphysema. There were 2 cases of usual interstitial pneumonia, 3 cases of non-specific interstitial pneumonia, 2 cases of airspace enlargement with fibrosis and 1 case of unclassifiable smoking-related interstitial fibrosis. The KBILD scores were 61.7±7.5 and mMRC scores were 1.5±0.8. Serum Krebs von den Lungen-6 concentration was (380.75±212.05)U/mL. Lung function test showed normal or mild restrictive ventilatory function, and mild-moderate impairment in diffusion capacity. Conclusions The prevalence of CPFE is 1.79‰ in a community-based lung cancer screening population, and is 4.69‰ in male lung cancer screening population.
Objective To investigate the tumor suppressor genes of phlegm DNA in smokers, and analyze the correlation between methylation level of tumor suppressor gene promoter and chronic mucus hypersecretion (CMH). Methods The study recruited the patients who were admitted in the respiratory department during 2013-2016 in this hospital, including 700 cases of urban smokers and 380 cases of rural smokers. Eleven genes commonly silenced by promoter methylation in lung cancer and associated with cancer risk were selected. Methylation specific PCR (MSP) was used in the sputum sample of 700 individuals in the urban smokers cohort. Replication was performed in 380 individuals from the rural smokers cohort. Results CMH was significantly associated with an overall increased number of methylated genes, with SULF2 methylation demonstrating the most consistent association. The association between SULF2 methylation and CMH was significantly increased in males but not in females both in the urban and rural groups (OR=2.73, 95%CI 1.53-4.93, P=0.001; OR=2.96, 95%CI 1.47-5.94, P=0.002, respectively). Furthermore, the association between methylation and CMH was more obvious among 139 male former smokers with persistent CMH compared with current smokers (SULF2, OR=3.64, 95%CI 1.57-8.35, P=0.002). Conclusion These findings demonstrate that especially male former smokers with persistent CMH have markedly increased promoter methylation of lung cancer risk genes and potentially could be at increased risk for lung cancer.