Uptake of Video-Assisted Thoracoscopic Lung Resections Within the Veterans Affairs for Known or Suspected Lung Cancer

Impact of general anesthesia type on chronic postsurgical pain following video-assisted thoracoscopic surgery for lung cancer: a retrospective propensity-matched cohort study

Background

Anesthetic agents are potential modifiable factors that can mitigate chronic postsurgical pain (CPSP) development. This study aimed to investigate the association between propofol-based total intravenous anesthesia (TIVA) and the occurrence of CPSP following video-assisted thoracoscopic surgery (VATS) for lung cancer resection.

Methods

This single-center retrospective cohort study included adult patients with lung cancer who underwent elective VATS between January 2018 and December 2022. Patients were divided based on the maintenance anesthetic used (propofol vs. sevoflurane). The primary outcome was the presence of CPSP, defined as any level of surgical site pain recorded within 3-6 months postoperatively. The authors investigated the association between anesthetic agents and CPSP using propensity score matching with stabilized inverse probability of treatment weighting (sIPTW) to adjust for confounders. Additionally, multivariable logistic regression was used to further adjust for intraoperative opioid use that sIPTW could not account for. The robustness of these associations was evaluated using the E-value.

Results

Of the 833 patients analyzed, 461 received propofol and 372 sevoflurane. The overall incidence of CPSP was 43.3%. After sIPTW, the use of TIVA was significantly associated with a lower incidence of CPSP (odds ratio [OR]: 0.75, 95% confidence interval [CI]: 0.57-0.99, P = 0.041), and remained significant after adjusting for intraoperative remifentanil equivalent dose (OR: 0.73, 95% CI: 0.55-0.96, P = 0.026). The E-values were 1.08 and 1.17, respectively.

Conclusions

Propofol-based TIVA is associated with reduced CPSP occurrence in VATS for lung cancer. Further prospective studies are needed to confirm the results.

Video-Assisted vs Robotic-Assisted Lung Lobectomies for Operating Room Resource Utilization and Patient Outcomes

Importance

With increased use of robots, there is an inadequate understanding of minimally invasive modalities' time costs. This study evaluates the operative durations of robotic-assisted vs video-assisted lung lobectomies.

Objective

To compare resource utilization, specifically operative time, between video-assisted and robotic-assisted thoracoscopic lung lobectomies.

Design, Setting, and Participants

This retrospective cohort study evaluated patients aged 18 to 90 years who underwent minimally invasive (robotic-assisted or video-assisted) lung lobectomy from January 1, 2020, to December 31, 2022, with 90 days' follow-up after surgery. The study included multicenter electronic health record data from 21 hospitals within an integrated health care system in Northern California. Thoracic surgery was regionalized to 4 centers with 14 board-certified general thoracic surgeons.

Exposures

Robotic-assisted or video-assisted lung lobectomy.

Main Outcomes and Measures

The primary outcome was operative duration (cut to close) in minutes. Secondary outcomes were length of stay, 30-day readmission, and 90-day mortality. Comparisons between video-assisted and robotic-assisted lobectomies were generated using the Wilcoxon rank sum test for continuous variables and the χ2 test for categorical variables. The average treatment effects were estimated with augmented inverse probability treatment weighting (AIPTW). Patient and surgeon covariates were adjusted for and included patient demographics, comorbidities, and case complexity (age, sex, race and ethnicity, neighborhood deprivation index, body mass index, Charlson Comorbidity Index score, nonelective hospitalizations, emergency department visits, a validated laboratory derangement score, a validated institutional comorbidity score, a surgeon-designated complexity indicator, and a procedural code count), and a primary surgeon-specific indicator.

Results

The study included 1088 patients (median age, 70.1 years [IQR, 63.3-75.8 years]; 704 [64.7%] female), of whom 446 (41.0%) underwent robotic-assisted and 642 (59.0%) underwent video-assisted lobectomy. The median unadjusted operative duration was 172.0 minutes (IQR, 128.0-226.0 minutes). After AIPTW, there was less than a 10% difference in all covariates between groups, and operative duration was a median 20.6 minutes (95% CI, 12.9-28.2 minutes; P < .001) longer for robotic-assisted compared with video-assisted lobectomies. There was no difference in adjusted secondary patient outcomes, specifically for length of stay (0.3 days; 95% CI, -0.3 to 0.8 days; P = .11) or risk of 30-day readmission (adjusted odds ratio, 1.29; 95% CI, 0.84-1.98; P = .13). The unadjusted 90-day mortality rate (1.3% [n = 14]) was too low for the AIPTW modeling process.

Conclusions and Relevance

In this cohort study, there was no difference in patient outcomes between modalities, but operative duration was longer in robotic-assisted compared with video-assisted lung lobectomy. Given that this elevated operative duration is additive when applied systematically, increased consideration of appropriate patient selection for robotic-assisted lung lobectomy is needed to improve resource utilization.

Long-term Functional Outcomes Among Older Adults Undergoing Video-assisted Versus Open Surgery for Lung Cancer: A Population-based Cohort Study

OBJECTIVE

To examine the long-term healthcare dependency outcomes of older adults undergoing VATS compared to open lung cancer resection.

SUMMARY OF BACKGROUND DATA

Although the benefits of VATS for lung cancer resection have been reported, there is a knowledge gap related to long-term functional outcomes central to decision-making for older adults.

METHODS

We conducted a population-based retrospective comparative cohort study of patients ≥70 years old undergoing lung cancer resection between 2010 and 2017 using linked administrative health databases. VATS was compared to open surgery for lung cancer resection. Outcomes were receipt of homecare and high time-at-home, defined as <14 institution-days within 1 year, in 5 years after surgery. We used time-to-event analyses. Homecare was analyzed as recurrent dichotomous outcome with Andersen-Gill multivariable models, and high time-at-home with Cox multivariable models.

RESULTS

Of 4974 patients, 2951 had VATS (59.3%). In the first three months postoperatively, homecare use ranged from 17.5% to 34.4% for VATS and 23.0% to 36.6% for open surgery. VATS was independently associated with lower need for postoperative homecare over 5 years (hazard ratio 0.82, 95% confidence interval 0.74-0.92). 1- and 5-year probability of high "time-at-home" were superior for VATS (74.4% vs 66.7% and 55.6% vs 45.4%, p < 0.001). VATS was independently associated with higher probability of high "time-at-home" (hazard ratio 0.81, 95% confidence interval 0.74-0.89) compared to open surgery.

CONCLUSIONS

Compared to open surgery, VATS was associated with lower homecare needs and higher probability of high "time-at-home," indicating reduced long-term functional dependence. Those important patient-centered endpoints reflect the overall long-term treatment burden on mortality and morbidity that can inform surgical decision-making.

New, long-term opioid use after lung cancer surgery is associated with reduced 2-year survival: a retrospective population-based cohort study in South Korea

INTRODUCTION

We aimed to investigate the proportion and associated factors for new long-term opioid use and its long-term effects after lung cancer surgery.

METHODS

The South Korean National Health Insurance Database was used as a nationwide registration data source. All patients undergoing lung cancer surgery between 2011 and 2018 were included, and patients who were preoperative opioid users were excluded from the analysis. New long-term opioid use was defined as an active opioid prescription at 6 months postoperatively.

RESULTS

In total, 54 509 patients were included in the final analysis. At 6 months postoperatively, 3325 (6.1%) patients who were newly prescribed opioids comprised the new long-term opioid user group. Older age, male sex, wider surgical extent, open thoracotomy, increased Charlson Comorbidity Index score, neoadjuvant or adjuvant chemotherapy, preoperative anxiety disorder and insomnia disorder were associated with a higher rate of new long-term opioid use. The new long-term opioid user group showed a 40% (HR, 1.40; 95% CI 1.29 to 1.53; p<0.001) higher risk of 2-year all-cause mortality. Moreover, the new long-term potent opioid user and less potent opioid user groups showed a 92% (HR, 1.92; 95% CI 1.67 to 2.21; p<0.001) and 22% (HR, 1.22; 95% CI 1.10 to 1.36; p<0.001) higher risk of 2-year all-cause mortality, respectively.

CONCLUSIONS

Among preoperative opioid-naive patients in South Korea, 6.1% became new long-term opioid users after lung cancer surgery. Certain factors are potential risk factors for new long-term opioid use, which could be associated with poorer long-term survival outcomes.

Predictors of 30-Day Pulmonary Complications after Video-Assisted Thoracoscopic Surgery Lobectomy

BACKGROUND

 Pulmonary complications are the most common adverse event after lung resection, yet few large-scale studies have examined pertinent risk factors after video-assisted thoracoscopic surgery (VATS) lobectomy. Veterans, older and less healthy compared with nonveterans, represent a cohort that requires further investigation. Our objective is to determine predictors of pulmonary complications after VATS lobectomy in veterans.

METHODS

 A retrospective review was conducted on patients who underwent VATS lobectomy from 2008 to 2018 using the Veterans Affairs Surgical Quality Improvement Program database. Patients were divided into two cohorts based on development of a pulmonary complication within 30 days. Patient characteristics were compared via multivariable analysis to determine clinical predictors associated with pulmonary complication and reported as adjusted odds ratios (aORs) with 95% confidence intervals. Patients with preoperative pneumonia, ventilator dependence, and emergent cases were excluded.

RESULTS

 In 4,216 VATS lobectomy cases, 480 (11.3%) cases had ≥1 pulmonary complication. Preoperative factors independently associated with pulmonary complication included chronic obstructive pulmonary disease (COPD) (aOR = 1.37 [1.12-1.69]; p = 0.003), hyponatremia (aOR = 1.50 [1.06-2.11]; p = 0.021), and dyspnea (aOR = 1.33 [1.06-1.66]; p = 0.013). Unhealthy alcohol consumption was associated with pulmonary complication via univariable analysis (17.1 vs. 13.0%; p = 0.016). Cases with pulmonary complication were associated with increased mortality (12.1 vs. 0.8%; p < 0.001) and longer length of stay (12.0 vs. 6.8 days; p < 0.001).

CONCLUSION

 This analysis revealed several preoperative factors associated with development of pulmonary complications. It is imperative to optimize pulmonary-specific comorbidities such as COPD or dyspnea prior to VATS lobectomy. However, unhealthy alcohol consumption and hyponatremia were linked with development of pulmonary complication in our analysis and should be addressed prior to VATS lobectomy. Future studies should explore long-term consequences of pulmonary complications.

Clinical Outcomes and Technical Approach of Thymectomy in the Veterans Health Administration

BACKGROUND

Thymectomy is traditionally performed via transsternal incision, but less invasive modalities have emerged, including transcervical, thoracoscopic, and robotic approaches. Despite the advantages of video-assisted thoracoscopic surgery(VATS) over thoracotomy, most thymectomies are performed via sternotomy. This study compared the utilization and 30-day post-operative outcomes of transsternal, transcervical, and VATS thymectomy in the Veterans Health Administration.

METHODS

This was a retrospective review of veterans that underwent thymectomy via the Veterans Affairs Surgical Quality Improvement Program. 30-day outcomes were compared between techniques, adjusting for confounding covariates. Temporal trends were analyzed using Spearman's rank correlation coefficient, rho(ρ).

RESULTS

From 2008-2019, 594 thymectomies were performed: 376(63.3%) transsternal, 113(19.0%) VATS(including robotic approaches), and 105(17.7%) transcervical cases. VATS utilization increased from 0% in 2008 to 61% of case volume in 2019. Relative to transsternal technique, VATS thymectomy was associated with decreased odds of pulmonary complications (adjusted odds ratio=0.06;p=0.028) and shorter hospital stay (2.9±0.4 days shorter;p<0.001). No difference in outcomes was detected between VATS and transcervical thymectomy. Post-operative complication rate decreased from 17.7% in 2008 to 5.6% in 2019 (ρ=-0.101;p=0.014). Length of stay decreased from median 4 days in 2008 to 3 days in 2019 (ρ=-0.093;p=0.026). In thymic cancer, VATS 5-year overall survival was non-inferior to transsternal approach(71.3% vs. 74.6%; p=0.54).

CONCLUSIONS

Transsternal approach comprised most thymectomy cases amongst veterans, while VATS thymectomy utilization increased over time and was associated with favorable outcomes. 30-day outcomes after thymectomy improved over time, which may reflect a trend towards wider utilization of less invasive approaches. Future studies should examine long-term outcomes.

Video-Assisted Thoracoscopic Surgery Lung Resection in United States Veterans: Trends and Outcomes versus Thoracotomy

BACKGROUND

 Video-assisted thoracoscopic surgery (VATS) offers reduced morbidity compared with open thoracotomy (OT) for pulmonary surgery. The use of VATS over time has increased, but at a modest rate in civilian populations. This study examines temporal trends in VATS use and compares outcomes between VATS and OT in the Veterans Health Administration (VHA).

METHODS

 Patients who underwent pulmonary surgery (wedge or segmental resection, lobectomy, or pneumonectomy) at Veterans Affairs centers from 2008 to 2018 were retrospectively identified using the Veterans Affairs Surgical Quality Improvement Project database. The cohort was divided into OT and VATS and propensity score matched, taking into account the type of pulmonary resection, preoperative diagnosis, and comorbidities. Thirty-day postoperative outcomes were compared. The prevalence of VATS use and respective complications over time was also analyzed.

RESULTS

 A total of 16,895 patients were identified, with 5,748 per group after propensity matching. VATS had significantly lower rates of morbidity and a 2-day reduction in hospital stay. Whereas 76% of lung resections were performed open in 2008, nearly 70% of procedures were performed using VATS in 2018. While VATS was associated with an 8% lower rate of major complications compared with thoracotomy in 2008, patients undergoing VATS lung resection in 2018 had a 58% lower rate of complications (p < 0.001).

CONCLUSIONS

 VATS utilization at VHA centers has become the predominant technique used for pulmonary surgeries over time. OT patients had more complications and longer hospital stays compared with VATS. Over the study period, VATS patients had increasingly lower complication rates compared with open surgery.

Uniportal Video-Assisted Thoracoscopic Lung Resection: A Single-Surgeon Experience and Comparison with Multiportal Technique in the Veteran Population

Background: Uniportal video-assisted thoracoscopic surgery (VATS) has been shown to offer improved postoperative outcomes compared with multiportal technique. Shorter operative time has rarely been described. Our objective was to compare operative time and clinical outcomes between uniportal and multiportal VATS approaches for lung resection. Methods: This is a retrospective review of patients that underwent video-assisted thoracoscopic lung resection at United States Veterans Affairs centers between 2008 and 2018 using the Veteran Affairs Surgical Quality Improvement Program. Cases were assigned to uniportal (single surgeon) or multiportal cohorts. Multivariable analysis of clinical outcomes was performed, adjusting for preoperative confounding covariates. Temporal trend in operative time in uniportal cohort was analyzed in the context of cumulative operative volume using Spearman's rank correlation coefficient, rho (ρ). Results: In total, 8,212 cases were selected from 2008 to 2018 at Veterans Affairs centers: 176 (2.1%) uniportal and 8036 (97.9%) multiportal cases. Uniportal cohort was significantly associated with shorter operative time (1.7 hours versus 3.1 hours, P < .001), higher adjusted odds of surgical site infection (adjusted odds ratio = 2.76; P = .005), and longer length of stay (6 days versus 5 days; P = .04). Uniportal cohort operative time decreased over time (ρ = -0.474), with most significant change corresponding with increased cumulative operative volume from 25 to 44 cases. Conclusions: Uniportal technique offered shorter operative duration in veterans compared with multiportal approach, validating its technical advantages. Operative time decreased as cumulative operative volume increased, demonstrating a learning curve. Future studies should prospectively investigate any association between operative time and clinical outcomes after thoracoscopic lung resection.

Uptake of minimally invasive surgery and stereotactic body radiation therapy for early stage non-small cell lung cancer in the USA: an ecological study of secular trends using the National Cancer Database

BACKGROUND

We aimed to assess the uptake of minimally invasive surgery (MIS) and stereotactic body radiation therapy (SBRT) among early stage (stage IA-IIB) non-small cell lung cancer (NSCLC) cases in the USA, and the rate of conversions from MIS to open surgery.

MATERIALS AND METHODS

Data were obtained from the US National Cancer Database, a nationwide facility-based cancer registry capturing up to 70% of incident cancer cases in the USA. We included cases diagnosed with early stage (clinical stages IA-IIB) NSCLC between 2010 and 2014. In an ecological analysis, we assessed changes in treatment by year of diagnosis. Among surgically treated cases, we assessed the uptake of MIS and whether conversion to open surgery took place. For cases that received thoracic radiotherapy, we assessed the uptake of SBRT.

RESULTS

Among 117 370 selected cases, radiotherapy use increased 3.4 percentage points between 2010 and 2014 (p<0.0001). Surgical treatments decreased 3.5 percentage points (p<0.0001). Rates of non-treatment remained stable (range: 10.0%-10.6% (p=0.4066)). Among surgically treated stage IA cases, uptake of MIS increased from 28.7% (95% CI 27.8% to 29.7%) in 2010 to 48.6% (95% CI 47.6% to 49.6%) in 2014 (p<0.0001), while conversions decreased from 17.0% (95% CI 15.6% to 18.6%) in 2010 to 9.1% (95% CI 8.3% to 10.0%) in 2014 (p<0.0001). MIS uptake among stages IB-IIB was lower and conversion rates were higher, but time trends were similar. Uptake of SBRT among stage IA receiving thoracic radiotherapy increased from 53.4% (95% CI 51.2% to 55.6%) in 2010 to 73.0% (95% CI 71.4% to 74.6%) in 2014 (p<0.0001). SBRT uptake among stage IB increased from 32.5% (95% CI 29.9% to 35.2%) in 2010 to 48.2% (95% CI 45.6% to 50.8%) in 2014 (p<0.0001).

CONCLUSION

Between 2010 and 2014, uptake of MIS and SBRT among early stage NSCLC significantly increased, while the rate of conversions to open surgery significantly decreased. Continuing these trends may contribute to improving patient care, in particular with the expected increase in early stages due to the implementation of lung cancer screening.