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find Keyword "propensity score" 34 results
  • Clinical application of subxiphoid uni-portal thoracoscopic thymectomy: A propensity score matching study

    ObjectiveTo investigate the safety, feasibility and advantages of subxiphoid uni-portal thoracoscopic thymectomy.MethodsClinical data of 65 patients undergoing subxiphoid uni-portal thoracoscopic thymectomy in our hospital from September 2018 to March 2019 were retrospectively analyzed. They were treated as a subxiphoid surgery group, including 36 males and 29 females, aged 49.5 (29-71) years. The incision with the length of about 3 cm was located approximately 1 cm under the xiphoid process. From January 2016 to December 2017, 65 patients received intercostal uni-portal thoracoscopic thymectomy, who were treated as a control group, including 38 males and 27 females, aged 48.9 (33-67) years. All patients who were clinically diagnosed with thymic tumor before surgery were treated with total thymectomy. After surgery, expectoration and analgesia were used.ResultsThere was no statistically significant difference in general clinical data, lesion size, intraoperative blood loss, postoperative catheterization time, postoperative hospital stay and postoperative pathology between the two groups. All operations were successfully completed, and the patients in both groups recovered uneventfully after surgery. Visual analogue scale scores on the 1st, 3rd, 7th and 30th day after surgery in the subxiphoid surgery group were lower than those in the control group.ConclusionThe subxiphoid uni-portal thoracoscopic approach can achieve total thymectomy with less trauma and faster postoperative recovery.

    Release date:2020-03-25 09:52 Export PDF Favorites Scan
  • Long-term results of tricuspid valve replacement in 608 patients: A propensity score matching analysis

    Objective To explore the evolving strategies and compare perioperative and long-term outcomes of tricuspid valve replacement (TVR) in recent 20 years in our hospital.MethodsBetween 1998 and 2018, the clinical data of 608 patients who underwent TVR at the Department of Cardiac Surgery, Guangdong Provincial People’s Hospital were retrospectively analyzed. There were 201 males and 407 females, with a median age of 47.0 (36.0, 57.0) years. Patients were divided into a biological tricuspid valve (BTV, n=427) group and a mechanical tricuspid valve (MTV, n=181) group. Propensity score matching was used to balance the baseline difference. Surgical strategy evolving, postoperative and long-term outcomes were analyzed between the two groups.ResultsSince 2008, the usage ratio of biological valves was significantly higher than that of mechanical valves. Seventy-nine (13.0%) patients died in hospital after TVR. Before propensity score matching, the postoperative mortality of the BTV group was higher than that of the MTV group (15.2% vs. 7.7%, P=0.012), and there was no statistical difference between the two groups after matching (10.4% vs. 7.2%, P=0.372). The duration of postoperative ventilator support in the BTV group was longer than that in the MTV group [22.0 (15.0, 37.0) h vs. 19.0 (11.0, 27.0) h, P=0.003], and the incidence of postoperative dialysis and re-thoracotomy exploring for bleeding was higher in the BTV group (8.9 % vs. 2.8%, 9.4% vs. 6.6%, respectively). However, there was no statistical difference in mortality after matching. The median follow-up time of discharged patients was 101.0 (65.0, 147.0) months, ranged from 1 to 265 months, and the follow-up rate was 82.2%. During the follow-up period, there were 101 deaths (19.1%) of whom 68 were from the BTV group and 33 from the MTV group. The survival rates at 1 year, 5 years, 10 years, 15 years and 20 years of all patients were 85.0% (95%CI 82.2-87.9), 78.9% (95%CI 75.7-82.4), 71.1% (95%CI 67.3-75.3), 59.7% (95%CI 54.2-65.6) and 51.7% (95%CI 43.3-60.7), and there was no statistical difference between the two groups after matching (P=0.46). The median time of tricuspid valve failure was 84.0 (54.0-111.0) months.ConclusionTVR is associated with high perioperative risks. There is no statistical difference in early mortality and long-term survival between biological and mechanical valve, while patients with mechanical valve has higher risk of re-operation for valve failure. Therefore, the type of prosthetic valve can be selected according to the patients' age, physical condition and the doctors’ experience.

    Release date:2021-07-28 10:02 Export PDF Favorites Scan
  • Impact of concurrent iliac vein compression relief on surgical outcomes for great saphenous vein varicosities: A propensity score-matched study

    ObjectiveTo compare the efficacy of varicose great saphenous vein (GSV) treatment alone versus combined treatment with iliac vein compression (IVC) intervention in improving lower extremity symptoms and prognosis among the patients with varicose GSV complicated by IVC. MethodsBased on inclusion and exclusion criteria, the patients with varicose GSV complicated by IVC treated at the Day Service Center of the First Affiliated Hospital of Chongqing Medical University from May 2022 to January 2025 were retrospectively enrolled. The patients were assigned into two groups according to the treatment strategies: the varicose GSV treatment alone group (control group) and the combined treatment group for varicose GSV and IVC (observation group). The primary endpoints included the closure rate of the GSV trunk, venous clinical severity score (VCSS), and venous insufficiency epidemiological and economic study quality of life/symptom (VEINES-QOL/Sym) questionnaire score at 6 and 12 months postoperatively. The significance level was set at α=0.05. ResultsA total of 264 patients with left lower extremity varicose GSV complicated by IVC were included. The observation group comprised 32 patients, while the remaining 232 patients underwent 1∶3 propensity score-matching, resulting in 96 matched patients in the control group. The baseline characteristics, including gender, age, and comorbidities, showed no statistically significant differences between the two groups (P>0.05). At 12 months postoperatively, the GSV trunk closure rate was 100% in both groups. Within-group comparisons revealed significant improvements in the VCSS and VEINES-QOL/Sym points at 6 and 12 months as compared with preoperative (on admission) values (P<0.05). Between-group comparisons showed that the observation group had greater improvement in the VEINES-QOL/Sym score at 6 months (P=0.028), but no significant difference in the VCSS (P=0.775); At 12 months, the observation group demonstrated significantly better the VCSS (P<0.001) and VEINES-QOL/Sym points (P<0.001) as compared with the control group. ConclusionsFor patients with left lower extremity GSV varicosities complicated by IVC, both treatment strategies significantly improve symptoms. Results of short-term follow-up (6 months) demonstrate early advantages in quality of life improvement with concurrent IVC intervention, while results of 12-month follow-up indicate superior efficacy in both symptom relief and quality of life enhancement. Therefore, concurrent IVC intervention may provide greater clinical benefits for mid- to long-term prognosis for patients with left lower extremity GSV varicosities complicated by IVC.

    Release date:2025-04-21 01:06 Export PDF Favorites Scan
  • Electromagnetic navigational bronchoscopy compared with transthoracic needle biopsy for diagnostic yield and safety in peripheral pulmonary lesions

    Objective To evaluate the diagnostic yield and safety of two biopsy methods, electromagnetic navigational bronchoscopy (ENB) and transthoracic needle biopsy (TTNB), in peripheral pulmonary lesions. To select a low-risk and high-benefit biopsy method based on the clinical characteristics of the lesions and patients. Methods A retrospective analysis was conducted on inpatients who underwent ENB and/or TTNB for peripheral pulmonary lesions in Huadong Hospital Affiliated to Fudan University. Propensity score matching was used to compare the diagnostic yield and safety of the two biopsy methods. Results A total of 126 patients were included in the ENB group, and 104 patients in the TTNB group. After propensity score matching, 83 matched pairs were obtained. The TTNB group exhibited a significantly higher diagnostic yield compared with the ENB group (90.4% vs. 48.2%, P<0.001), but it was also associated with a higher incidence of pneumothorax (1.2% vs. 21.7%, P<0.001). In the ENB group, the diagnostic efficacy was correlated with lesion diameter (P<0.001, OR=0.183, 95%CI 0.071 - 0.470), but there was no statistically significant difference in the diagnostic yield among different lung segments (P>0.05). In the TTNB group, lesion characteristics did not significantly affect the diagnostic yield, but a lesion diameter ≤30 mm (P=0.019, OR=5.359, 95%CI 1.320 - 21.753) and a distance from the pleura ≥20mm (P=0.030, OR=6.399, 95%CI 1.192 - 34.360) increased the risk of pneumothorax. When stratified based on lesion and patient blood characteristics, no significant difference was found in the diagnostic yield between the two groups for characteristics such as left upper lobe (P=0.195), right middle lobe (P=0.333), solid with cavity (P=0.567), or abnormal serum white blood cell count (P=0.077). However, the incidence of pneumothorax in the TTNB group was higher than that in the ENB group. Conclusions The diagnostic yield of ENB is affected by the size of the lesion, while the incidence of pneumothorax in TTNB is influenced by both lesion size and distance from the pleura. In cases with lesions located in the left upper lobe, right middle lobe, solid with cavity, or with abnormal serum white blood cell count, selecting ENB for biopsy is considered preferable to TTNB.

    Release date:2023-12-07 04:39 Export PDF Favorites Scan
  • Association of preoperative systemic immune-inflammation index with early allograft dysfunction in liver transplant recipients: a single-center retrospective study

    ObjectiveTo investigate the association between preoperative systemic immune-inflammation index (SII) and early allograft dysfunction (EAD) in liver transplant recipients. MethodsThe patients underwent liver transplantation who met the inclusion and exclusion criteria in the West China Hospital of Sichuan University from January 2015 to December 2019 were collected. The postoperative EAD was analyzed. The generalized propensity score weighting (GPSW) were used to balance the confounding factors affecting the occurrence of EAD. ResultsA total of 390 patients who met the inclusion and exclusion criteria were enrolled in this study, 93 cases of EAD occurred, the incidence of EAD was 23.8%. The recipient’s model for endstage liver disease score and Child-Pugh grade, the donor’s body mass index, age, and graft weight, and the intraoperative cold ischemia time, liver transplantation time, intraoperative blood loss, total infusion, red blood cell transfusion, autologous blood reinfusion, fresh frozen plasma transfusion, concentrated platelet transfusion, total red blood cell and autologous blood transfusions were balanced by GPSW, then the overall mean correlation coefficient of the 14 covariables and SII decreased from 0.049 to 0.039, and each covariable reached the standard of less than 0.1. The binary logistic regression analysis based on GPSW showed that there was no significant association between SII and EAD (P=0.371). ConclusionFrom preliminary result of this study, it is not found that preoperative SII of liver transplantation patients is related to occurrence of postoperative EAD.

    Release date:2022-06-08 01:57 Export PDF Favorites Scan
  • The relationship between mean daily step counts and pulmonary complications after thoracoscopic lobectomy in elderly patients: A propensity score matching study

    Objective To investigate the relationship between preoperative mean daily step counts and pulmonary complications after thoracoscopic lobectomy in elderly patients. Methods From 2018 to 2021, the elderly patients with pulmonary complications after thoracoscopic lobectomy were included. A 1∶1 propensity score matching was performed with patients without pulmonary complications. The clinical data were compared between the two groups. ResultsTotally, 100 elderly patients with pulmonary complications were enrolled, including 78 males and 22 females, aged 66.4±4.5 years. And 100 patients without pulmonary complications were matched, including 71 males and 29 females aged 66.2±5.0 years. There was no significant difference in the preoperative data between the two groups (P>0.05). Compared to the patients with pulmonary complications, the ICU stay was shorter (8.1±4.4 h vs. 12.9±7.5 h, P<0.001), the first out-of-bed activity time was earlier (8.8±4.5 h vs. 11.2±6.1 h, P=0.002), and the tube incubation time was shorter (19.3±9.2 h vs. 22.5±9.4 h, P=0.015) in the patients wihout pulmonary complications. There was no statistical difference in other perioperative data between the two groups (P>0.05). The mean daily step counts in the pulmonary complications group were significantly less than that in the non-pulmonary complications group (4 745.5±2 190.9 steps vs. 6 821.1±2 542.0 steps, P<0.001). The daily step counts showed an upward trend for three consecutive days in the two groups, but the difference was not significant. Conclusion The decline of preoperative mean daily step counts is related to pulmonary complications after thoracoscopic lobectomy in elderly patients. Recording daily step counts can promote preoperative active exercise training for hospitalized patients.

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  • Impact of perioperative nutritional status on postoperative chest tube duration in tuberculosis patients: A propensity score matching analysis

    ObjectiveTo analyze the incidence of complications, duration of chest tube indwelling, and nutritional status in tuberculosis (TB) patients undergoing pulmonary surgery, and to explore perioperative nutritional management strategies and rehabilitation measures by identifying nutritional factors influencing postoperative chest tube duration. MethodsA retrospective analysis was conducted on clinical data of TB patients who underwent lobectomy at the Department of Thoracic Surgery, Chengdu Public Health Clinical Medical Center from 2022 to 2023. Patients were grouped based on chest tube duration (≤7 days vs. >7 days) and propensity score matching (PSM) was performed. Complications, drainage volume, and nutritional status were compared between groups. Univariate and multivariate logistic regression analyses were used to identify factors associated with prolonged chest tube duration. ResultsAmong 276 enrolled patients, 163 had chest tube duration ≤7 days [pre-PSM: 91 males, 72 females, mean age of (34.88±14.10) years] and 113 had duration >7 days [pre-PSM: 69 males, 44 females, mean age of (39.04±13.28) years]. After PSM (45 patients per group), no significant differences were observed in pleural or pulmonary infection rates between groups (P>0.05). Univariate analysis revealed statistical differences in preoperative albumin-to-globulin ratio (A/G), 24-hour postoperative A/G, 24-hour postoperative prognostic nutritional index (PNI), pre-discharge A/G, and pre-discharge hemoglobin (P<0.05). Multivariate logistic regression identified the following independent risk factors for prolonged chest tube duration: preoperative A/G, 24-hour postoperative A/G, 24-hour postoperative PNI, pre-discharge A/G, and pre-discharge hemoglobin. ConclusionPreoperative A/G, 24-hour postoperative A/G and PNI, and pre-discharge A/G and hemoglobin significantly influence chest tube duration in TB patients. Preoperative nutritional-immunological indicators independently predict prolonged drainage, while dynamic postoperative monitoring provides comprehensive recovery assessment. Integrating these parameters enables early identification of high-risk patients, facilitates personalized drainage management, and may reduce hospitalization duration while improving prognosis.

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  • The association of intraoperative positive end-expiratory pressure with pulmonary complications after thoracoscopic lung surgery: A propensity score-matching study

    ObjectiveTo evaluate the correlation between positive end-expiratory pressure (PEEP) level and postoperative pulmonary complications (PPCs) in patients undergoing thoracoscopic lung surgery. MethodsThe clinical data of patients who underwent elective thoracoscopic lung surgery at West China Hospital of Sichuan University from January 2022 to June 2023 were retrospectively analyzed. Patients were divided into 2 groups according to intraoperative PEEP levels: a PEEP 5 cm H2O group and a PEEP 10 cm H2O group. The incidence of PPCs in the two groups after matching was compared using a nearest neighbor matching method with a ratio of 1∶1, setting the clamp value as 0.02. ResultsA total of 538 patients were screened, and after propensity score-matching, a total of 229 pairs (458 patients) were matched, with an average age of 53.9 years and 69.4% (318/458) females. A total of 118 (25.8%) patients had PPCs during hospitalization after surgery, including 60 (26.2%) patients in the PEEP 5 cm H2O group and 58 (25.3%) patients in the PEEP 10 cm H2O group, with no statistically significant difference between the two groups [OR=0.997, 95%CI (0.495, 1.926), P=0.915]. Multivariate logistic regression analysis showed that PEEP was not an independent risk factor for PPCs [OR=0.920, 95%CI (0.587, 1.441), P=0.715]. ConclusionFor patients undergoing thoracoscopic lung surgery, intraoperative PEEP (5 cm H2O or 10 cm H2O) is not associated with the risk of PPCs during hospitalization after surgery, which needs to be further verified by prospective, large-sample randomized controlled studies.

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  • Associations of preoperative red cell distribution width with mortality and morbidity in patients underwent liver transplantation: a retrospectively observational study

    ObjectiveTo investigate the associations of preoperative red cell distribution width (RDW) with mortality and morbidity in patients underwent liver transplantation. MethodsThis investigation was a retrospective study, the patients underwent liver transplantation met the inclusion criteria from June 2017 to May 2020 in the West China Hospital of Sichuan University were enrolled. The patients were divided into RDW≤14.5% group and RDW>14.5% group according to the normal RDW critical value (14.5%). The propensity score matching (PSM) was used to adjust the baseline characteristics. The primary outcome was 1-year mortality. The secondary outcomes included 1-year survival, 30-day mortality, incidence of early allograft dysfunction, acute kidney injury, renal replacement therapy, and pulmonary complications, as well as ICU stay and postoperative hospital stay. ResultsA total of 303 patients who met the analysis conditions were included. After PSM, 57 patients in each group were matched. There were no significant differences between the two groups in the baseline data such as the gender, age, body mass index (BMI), initial diagnosis, MELD score, Child-Pugh grade of the recipients, and the gender, age, and BMI of the donors (P>0.05). The 1-year [22.8% (13/57) versus 5.3% (3/57), χ2=7.27, P=0.007] and 30-day [15.8% (9/57) versus 3.5% (2/57), χ2=4.93, P=0.026] mortality of the patients with RDW >14.5% were higher than that of the patients with RDW ≤14.5% . The Kaplan-Meier survival curve showed that the 1-year survival of the patients with RDW ≤14.5% after liver transplantation was better than that of the patients with RDW >14.5% [hazard ratio=4.75, 95%CI (1.78, 12.67), P=0.007], but there were no significant differences between the two groups in the incidence of early graft dysfunction, acute renal injury, renal replacement therapy, and pulmonary complications, as well as postoperative hospital stay and ICU stay (P>0.05). ConclusionPreliminary results of this study indicate that preoperative RDW of patients underwent allogeneic liver transplantation is associated with1-year mortality, 30-day mortality, and 1-year survival.

    Release date:2022-06-08 01:57 Export PDF Favorites Scan
  • Long-term outcome of robotic versus video-assisted thoracic surgery for stageⅠ lung adenocarcinoma: A propensity score matching study

    ObjectiveTo compare the the effectiveness of robot-assisted thoracic surgery (RATS) with video-assisted thoracic surgery (VATS), in stageⅠ lung adenocarcinoma.MethodsFrom January 2012 to December 2018, 291 patients were included. The patients were allocated into two groups including a RATS group with 125 patients and a VATS group with 166 patients. Two cohorts (RATS, VATS ) of clinical stageⅠ lung adenocarcinoma patients were matched by propensity score. Then there were 114 patients in each group (228 patients in total). There were 45 males and 69 females at age of 62±9 years in the RATS group; 44 males, 70 females at age of 62±8 years in the VATS group. Overall survival (OS) and disease-free survival (DFS) were assessed. Univariate and multivariate analyses were performed to identify factors associated with the outcomes.Results Compared with the VATS group, the RATS group got less blood loss (P<0.05) and postoperative drainage (P<0.05) with a statistical difference. There was no statistical difference in drainage time (P>0.05) or postoperative hospital stay (P>0.05) between the two groups. The RATS group harvested more stations and number of the lymph nodes with a statistical difference (P<0.05). There was no statistical difference in 1-year, 3-year and 5-year OS and mean survival time (P>0.05). While there was a statistical difference in DFS between the two groups (1-year DFS: 94.1% vs. 95.6%; 3-year DFS: 92.6% vs. 75.2%; 5-year DFS: 92.6% vs. 68.4%, P<0.05; mean DFS time: 78 months vs. 63 months, P<0.05) between the two groups. The univariate analysis found that the number of the lymph nodes dissection was the prognostic factor for OS, and tumor diameter, surgical approach, stations and number of the lymph nodes dissection were the prognostic factors for DFS. However, multivariate analysis found that there was no independent risk factor for OS, but the tumor diameter and surgical approach were independently associated with DFS.ConclusionThere is no statistical difference in OS between the two groups, but the RATS group gets better DFS.

    Release date:2020-03-25 09:52 Export PDF Favorites Scan
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