Short and Long-Term Outcomes of Epidural or Intravenous Analgesia after Esophagectomy: A Propensity-Matched Cohort Study

Epidural analgesia during esophagectomy and esophageal cancer prognosis: A population-based nationwide study in Finland

BACKGROUND

The use of epidural analgesia has been proposed to improve the prognosis of esophageal cancer by attenuating the stress response and being less immunosuppressive than opioids. This study aims to evaluate the association, if any, between non-epidural pain management compared to epidural analgesia during minimally invasive or open esophagectomy and esophageal cancer prognosis.

MATERIALS AND METHODS

This was a population-based nationwide retrospective cohort study in Finland, using the Finnish National Esophago-Gastric Cancer Cohort (FINEGO). Esophagectomy patients with epidural and no epidural analgesia were compared. Multivariable Cox regression provided hazard ratios (HR) with 95% confidence intervals (CI) non-epidural pain management compared to epidural analgesia, adjusted for the calendar period of surgery, sex, age, comorbidity (Charlson Comorbidity Index), tumor stage, tumor histology, neoadjuvant therapy, type of surgery, and esophageal cancer surgery volume.

RESULTS

After exclusions, there were 1381 patients available with information on epidural analgesia. Of these, 969 (70.2%) were men and 832 (60.2%) had esophageal adenocarcinoma. After adjustment for confounding factors, non-epidural pain management was not associated with higher 90-day mortality (HR 1.022 95% CI 0.582-1.794), overall mortality up to 5 years (HR 1.156 95% CI 0.909-1.470), nor with 5 years cancer-specific mortality (HR 1.134 95% CI 0.884-1.456) compared to epidural analgesia.

CONCLUSION

Although the point estimates may hint at a potentially improved prognosis associated with epidural use, this population-based nationwide study suggests no statistically significant association between epidural analgesia during esophagectomy and esophageal cancer prognosis.

EDITORIAL COMMENT

This large esophagectomy (cancer) cohort in Finland was used to compare those who received epidural analgesia with those who did not for associations with late mortality in a retrospective analysis and where anesthesia and analgesia treatments were not controlled. The findings showed that when other recognized risks for mortality were taken into account, there was not a meaningful difference in relative risk for late mortality related to the presence or absence of epidural analgesia, though the analgesia treatments were not randomly allocated. These results do not rule out associations of analgesia choice with other outcomes that might be important to patients.

Prospective Survey of Postoperative Pain in Japan: A Multicenter, Observational Study

Background/Objectives: Postoperative analgesia is important for reducing biologically invasive reactions to surgery. In Japan, postoperative analgesia, including indices of analgesia, has not been adequately addressed. This study aimed to determine the relationship between postoperative pain and postoperative course and the importance of analgesia for early recovery. Methods: Patients who underwent any of seven surgical procedures in gastrointestinal, thoracic, and cardiac surgery were enrolled. The primary endpoint was a median Prince Henry Pain Scale score from postoperative days 1 to 3. Secondary endpoints were the quality of recovery on postoperative day 7 (Quality of Recovery-15 [QoR-15]) and the length of postoperative hospital stay. Results: Median postoperative pain levels among surgeries were 3 on day 1, 2 on days 2 and 3, 1 on day 7, and 1 at discharge. In both univariate and multivariate analyses, the use of postoperative epidural analgesia and intravenous patient-controlled analgesia (IV-PCA) were significant predictors of early postoperative pain. Only early postoperative pain was a significant predictor of QoR-15 score. Regular use of acetaminophen, early postoperative pain, no appetite, and postoperative complications were significant in affecting the length of postoperative hospital stay. In the comparison of early postoperative pain according to whether epidural analgesia and IV-PCA were used, the group that used both methods had the least pain. Conclusions: In Japan, early postoperative pain persists after major surgical procedures and affects postoperative quality of recovery and length of hospital stay. The use of epidural analgesia, IV-PCA, or both appeared to be effective in overcoming early postoperative pain, thereby enhancing early postoperative recovery.

Analysis of factors related to anesthetic management affecting acute kidney injury occurring within 72 h after esophagectomy for esophageal cancer: a historical cohort study

BACKGROUND

The effects of factors related to anesthetic management, including anesthesia methods and infusion volume, on acute kidney injury (AKI) after esophagectomy have not been thoroughly investigated.

METHODS

A historical cohort study of patients who underwent esophagectomy between January 2008 and December 2022 was conducted. AKI was defined according to the Kidney Disease Improving Global Outcomes creatinine criteria within 72 h after esophagectomy. Logistic regression was used to model the association between perioperative factors, including factors related to anesthetic management, and postoperative AKI.

RESULTS

Of 1005 patients, 48 patients (4.8%) had AKI (40 stage 1 and 8 stage 2). AKI patients were older (67.8 vs. 65.0 years, P = 0.046) and more likely to have hypertension (72.9 vs. 37.9%, P < 0.001), chronic kidney disease (39.6 vs. 14.3%, P < 0.0001), red blood cell (RBC) transfusions (12.5 vs. 3.4%, P = 0.0085), and longer duration of anesthesia (518 vs. 490 min, P = 0.0058) than non-AKI patients. AKI patients were less likely to have epidural anesthesia (72.9 vs. 91.5%, P < 0.001). The distribution of inhaled anesthetics chosen was not significantly different between AKI and non-AKI patients. On multivariable logistic regression analysis, AKI was associated with the Brinkman index (per 100 units, odds ratio (OR) = 1.06), hypertension (OR = 3.39), chronic kidney disease (OR = 2.58), duration of anesthesia (per 10 min, OR = 1.03), epidural anesthesia (OR = 0.35) and RBC transfusion (OR = 3.27).

CONCLUSIONS

Except for epidural anesthesia, no significant association was found between AKI and factors related to anesthetic management. Epidural anesthesia may protect against early postoperative AKI in patients undergoing esophagectomy.

Trial watch: local anesthetics in cancer therapy

Preclinical evidence indicates potent antitumor properties of local anesthetics. Numerous underlying mechanisms explaining such anticancer effects have been identified, suggesting direct cytotoxic as well as indirect immunemediated effects that together reduce the proliferative, invasive and migratory potential of malignant cells. Although some retrospective and correlative studies support these findings, prospective randomized controlled trials have not yet fully confirmed the antineoplastic activity of local anesthetics, likely due to the intricate methodology required for mitigating confounding factors. This trial watch aims at compiling all published preclinical and clinical research, along with completed and ongoing trials, that explore the potential antitumor effects of local anesthetics.

Evolving Perspectives on Esophagectomy Care: Clinical Update

Recent changes in perioperative care have led to new perspectives and important advances that have helped to improve outcomes among patients treated with esophagectomy for esophageal cancer.

Characterization of Epidural Analgesia Interruption and Associated Outcomes After Esophagectomy

INTRODUCTION

Interruption of thoracic epidural analgesia may impact the postoperative course following esophagectomy. This study investigates the incidence and causes of epidural interruption in esophagectomy patients along with associated postoperative outcomes.

METHODS

This single-institution retrospective analysis examined patients undergoing esophagectomy who received a thoracic epidural catheter from 2016 to 2020. Patients were stratified according to whether epidural catheter infusion was interrupted or not postoperatively. Outcomes were compared between the two groups, and predictors of epidural interruption and postoperative complications were estimated using multivariable logistic regression.

RESULTS

Of the 168 patients who received a thoracic epidural before esophagectomy, 60 (35.7%) required epidural interruption and 108 (64.3%) did not. Interruption commonly occurred on postoperative day 1 and was due to hypotension 80% of the time. Heart failure (10.0% versus 0.9%, P = 0.009), atrial fibrillation (20.0% versus 3.7%, P = 0.002), preoperative opioid use (30.0% versus 16.7%, P = 0.043), and higher American Society of Anesthesiology classification (88.4% versus 70.4%, P = 0.008) were more prevalent in the epidural interruption cohort. The female gender was associated with epidural interruption on multivariable logistic regression (adjusted odds ratio [AOR] 2.45, P = 0.039). Patients in the epidural interruption cohort had a higher incidence of delirium (30.5% versus 13.9%, P = 0.010), sepsis (13.6% versus 3.7%, P = 0.028), and severe anastomotic leak (18.3% versus 7.4%, P = 0.032). On adjusted analysis, heart disease (AOR 4.26, P = 0.027), BMI <18.5 (AOR 9.83, P = 0.031), and epidural interruption due to hypotension (AOR 3.51, P = 0.037) were associated with severe anastomotic leak.

CONCLUSIONS

Early epidural interruption secondary to hypotension in esophagectomy patients may be a harbinger of postoperative complications such as sepsis and severe anastomotic leak. Patients requiring epidural interruption due to hypotension should have a low threshold for additional workup and early intervention.

Temporal trends in postoperative and ventilator-associated pneumonia in the United States

OBJECTIVE

To determine change in rates of postoperative pneumonia and ventilator-associated pneumonia among patients hospitalized in the United States during 2009-2019.

DESIGN

Retrospective cohort study.

PATIENTS

Patients hospitalized for major surgical procedures, acute myocardial infarction, heart failure, and pneumonia.

METHODS

We conducted a retrospective review of data from the Medicare Patient Safety Monitoring System, a chart-abstraction-derived database including 21 adverse-event measures among patients hospitalized in the United States. Changes in observed and risk-adjusted rates of postoperative pneumonia and ventilator-associated pneumonia were derived.

RESULTS

Among 58,618 patients undergoing major surgical procedures between 2009 and 2019, the observed rate of postoperative pneumonia from 2009-2011 was 1.9% and decreased to 1.3% during 2017-2019. The adjusted annual risk each year, compared to the prior year, was 0.94 (95% CI, 0.92-0.96). Among 4,007 patients hospitalized for any of these 4 conditions at risk for ventilator-associated pneumonia during 2009-2019, we did not detect a significant change in observed or adjusted rates. Observed rates clustered around 10%, and adjusted annual risk compared to the prior year was 0.99 (95% CI, 0.95-1.02).

CONCLUSIONS

During 2009-2019, the rate of postoperative pneumonia decreased statistically and clinically significantly in among patients hospitalized for major surgical procedures in the United States, but rates of ventilator-associated pneumonia among patients hospitalized for major surgical procedures, acute myocardial infarction, heart failure, and pneumonia did not change.

Short-Term Outcomes of Epidural Analgesia in Minimally Invasive Esophagectomy for Esophageal Cancer: Nationwide Inpatient Data Study in Japan

BACKGROUND

Studies have shown that epidural analgesia (EDA) is associated with a decreased risk of pneumonia and anastomotic leakage after esophagectomy, and several guidelines strongly recommend EDA use after esophagectomy. However, the benefit of EDA use in minimally invasive esophagectomy (MIE) remains unclear.

OBJECTIVE

The aim of this retrospective study was to compare the short-term outcomes between patients with and without EDA undergoing MIE for esophageal cancer.

METHODS

Data of patients who underwent oncologic MIE (April 2014-March 2019) were extracted from a Japanese nationwide inpatient database. Stabilized inverse probability of treatment weighting (IPTW), propensity score matching, and instrumental variable analyses were performed to investigate the associations between EDA use and short-term outcomes, adjusting for potential confounders.

RESULTS

Among 12,688 eligible patients, EDA was used in 9954 (78.5%) patients. In-hospital mortality, respiratory complications, and anastomotic leakage occurred in 230 (1.8%), 2139 (16.9%), and 1557 (12.3%) patients, respectively. In stabilized IPTW, EDA use was significantly associated with decreased in-hospital mortality (odds ratio [OR] 0.46 [95% confidence interval 0.34-0.61]), respiratory complications (OR 0.74 [0.66-0.84]), and anastomotic leakage (OR 0.77 [0.67-0.88]). EDA use was also associated with decreased prolonged mechanical ventilation, unplanned intubation, nonsteroidal anti-inflammatory drug use, acetaminophen use, postoperative length of stay, and total hospitalization costs and increased vasopressor use. One-to-three propensity score matching and instrumental variable analyses demonstrated equivalent results.

CONCLUSIONS

EDA use in oncologic MIE was associated with low in-hospital mortality as well as decreased respiratory complications, and anastomotic leakage, suggesting the potential advantage of EDA use in MIE.

Implementation of the Esophagectomy Complication Consensus Group definitions: the benefits of speaking the same language

In 2015 the Esophagectomy Complication Consensus Group (ECCG) reported consensus definitions for complications after esophagectomy. This aimed to reduce variation in complication reporting, attributed to heterogeneous definitions. This systematic review aimed to describe the implementation of this definition set, including the effect on complication frequency and variation. A systematic literature review was performed, identifying all observational and randomized studies reporting complication frequencies after esophagectomy since the ECCG publication. Recruitment periods before and subsequent to the index ECCG publication date were included. Coefficients of variance were calculated to assess outcome heterogeneity. Of 144 studies which met inclusion criteria, 70 (48.6%) used ECCG definitions. The median number of separately reported complication types was five per study; only one study reported all ECCG complications. The coefficients of variance of the reported frequencies of eight of the 10 most common complications were reduced in studies which used the ECCG definitions compared with those that did not (P = 0.036). Among ECCG studies, the frequencies of postoperative pneumothorax, reintubation, and pulmonary emboli were significantly reduced in 2020-2021, compared with 2015-2019 (P = 0.006, 0.034, and 0.037 respectively). The ECCG definition set has reduced variation in esophagectomy morbidity reporting. This adds greater confidence to the observed gradual improvement in outcomes with time, and its ongoing use and wider dissemination should be encouraged. However, only a handful of outcomes are widely reported, and only rarely is it used in its entirety.

Comparison of the effects of perineural or intravenous dexamethasone on thoracic paravertebral block in Ivor‐Lewis esophagectomy: A double‐blind randomized trial

Efforts to prolong thoracic paravertebral block (TPVB) analgesia include local anesthetic adjuvants, such as dexamethasone (Dex). Previous studies showed that both perineural (PN) and intravenous (i.v.) routes could prolong analgesia. As PN Dex is an off‐label use, anesthesiologists should be fully informed of the clinical differences, if any, on block duration. This study was designed to evaluate the two administration routes of Dex for duration of analgesia in TPVB. Ninety‐five patients scheduled for Ivor‐Lewis esophagectomy were randomized to receive TPVB (0.5% ropivacaine 15 ml), PN or i.v. Dex 8 mg. The primary end point was the duration of analgesia. The secondary end points included pain scores, analgesic consumption, adverse effects rate, and incidence of chronic pain at 3 months postoperatively. The PN‐Dex group showed better analgesic effects than the i.v.‐Dex group (p < 0.05). Similarly, the visual analogue scale scores in patients at 2, 4, 8, and 12 h postoperatively were lower in the PN‐Dex group than the i.v.‐Dex group (p < 0.05). The analgesic consumption in both the PN‐Dex and i.v.‐Dex groups was significantly lower than that in the control group (p < 0.05). Regarding the incidence of chronic pain, regardless of route, Dex decreased the incidence of chronic postsurgical pain and neuropathic pain at 3 months after surgery (p < 0.05), but there were no clinical differences between the i.v.‐Dex and PN‐Dex groups. Perineural dexamethasone improved the magnitude and duration of analgesia compared to that of the i.v.‐Dex group in TPVB in Ivor‐Lewis esophagectomy. However, there were no clinically significant differences between the two groups in the incidence of chronic pain.

Effects of Perioperative Epidural Analgesia on Cancer Recurrence and Survival

Surgical resection is the main curative avenue for various cancers. Unfortunately, cancer recurrence following surgery is commonly seen, and typically results in refractory disease and death. Currently, there is no consensus whether perioperative epidural analgesia (EA), including intraoperative and postoperative epidural analgesia, is beneficial or harmful on cancer recurrence and survival. Although controversial, mounting evidence from both clinical and animal studies have reported perioperative EA can improve cancer recurrence and survival via many aspects, including modulating the immune/inflammation response and reducing the use of anesthetic agents like inhalation anesthetics and opioids, which are independent risk factors for cancer recurrence. However, these results depend on the cancer types, cancer staging, patients age, opioids use, and the duration of follow-up. This review will summarize the effects of perioperative EA on the oncological outcomes of patients after cancer surgery.

Anesthetic technique and cancer surgery outcomes

PURPOSE OF REVIEW

Surgery remains integral to treating solid cancers. However, the surgical stress response, characterized by physiologic perturbation of the adrenergic, inflammatory, and immune systems, may promote procancerous pathways. Anesthetic technique per se may attenuate/enhance these pathways and thereby could be implicated in long-term cancer outcomes.

RECENT FINDINGS

To date, clinical studies have predominantly been retrospective and underpowered and, thus limit meaningful conclusions. More recently, prospective studies of regional anesthesia for breast and colorectal cancer surgery have failed to demonstrate long-term cancer outcome benefit. However, based on the consistent observation of protumorigenic effects of surgical stress and that of volatile anesthesia in preclinical studies, supported by in vivo models of tumor progression and metastasis, we await robust prospective clinical studies exploring the role of propofol-based total intravenous anesthesia (cf. inhalational volatiles). Additionally, anti-adrenergic/anti-inflammatory adjuncts, such as lidocaine, nonsteroidal anti-inflammatory drugs and the anti-adrenergic propranolol warrant ongoing research.

SUMMARY

The biologic perturbation of the perioperative period, compounded by the effects of anesthetic agents, renders patients with cancer particularly vulnerable to enhanced viability of minimal residual disease, with long-term outcome consequences. However, low level and often conflicting clinical evidence equipoise currently exists with regards to optimal oncoanesthesia techniques. Large, prospective, randomized control trials are urgently needed to inform evidence-based clinical practice guidelines.

Anesthetic Management for Squamous Cell Carcinoma of the Esophagus

While surgery plays a major role in the treatment and potential cure of esophageal cancers, esophagectomy remains a high-risk operation with significant perioperative morbidity and mortality compared to other oncosurgical procedures. Perioperative management for esophagectomy is complex, and close attention to detail in various areas of anesthetic and perioperative management is crucial to improve postoperative outcomes. Patients undergoing esophagectomy should be offered an evidence-based risk assessment for their postoperative outcomes to allow active participation and informed, shared-decision making. Novel perioperative risk scores have been developed to predict both short-term and long-term outcomes in patients with esophageal cancer, although independent validation of such scoring systems is still required. Apart from accurate preoperative risk assessment, further efforts to improve morbidity and mortality from esophagectomy is achieved through comprehensive Enhanced Recovery after Surgery (ERAS) protocols, which comprise an individualized bundle of care throughout the perioperative journey for each patient and should be implemented as a standard practice. Furthermore, anesthetic practice and perioperative anesthetic drug usage can potentially affect cancer progression and recurrence. This chapter reviews current evidence for various factors that contribute to the improvement of perioperative outcomes, including prehabilitation, preoperative optimization of anemia, thoracic epidural analgesia, intraoperative protective ventilatory strategies, goal-directed fluid therapy, as well as special attention to other perioperative issues that potentially reduce anastomotic and cardiopulmonary complications. In summary, it is difficult to show a measurable benefit from any one single intervention, and a multidisciplinary approach that encompasses multiple aspects of perioperative care is necessary to improve outcomes after esophagectomy.

The role of regional anaesthesia in the emerging subspecialty of onco-anaesthesia: a state-of-the-art review

Cancer accounts for millions of deaths globally each year, predominantly due to recurrence and metastatic disease. The majority of patients with primary solid organ cancers require surgery, however, some degree of tumour dissemination related to surgery is inevitable. The surgical stress response and associated immunosuppression, pain, inflammation, tissue hypoxia and angiogenesis have all been implicated in promoting tumour survival, proliferation and recurrence. Regional anaesthesia was hypothesised to reduce the surgical stress response and immunosuppression, minimise the need for volatile anaesthesia and reduce pain and opioid requirements, thus mitigating pro-tumour pathways associated with the peri-operative period and improving long-term oncological outcomes. While some retrospective studies suggested an association between regional anaesthesia and reduced cancer recurrence, the first large randomised controlled trial on the effect of anaesthetic technique on cancer outcome found no significant difference between paravertebral regional anaesthesia and volatile anaesthesia with opioid analgesia in patients undergoing breast cancer surgery. Randomised controlled trials on the long-term oncological outcomes of regional anaesthesia in other tumour types are ongoing. The focus on how peri-operative interventions, especially regional anaesthesia, during cancer resection surgery, may enhance short-term recovery and perhaps influence long-term outcome has spawned the global emergence of the subspecialty of onco-anaesthesia. This review aims to discuss the most recent evidence on the use of regional anaesthesia in cancer surgery and the significance of its role in onco-anaesthesia.

Use of vasopressors during esophagectomy is not associated with increased risk of anastomotic leak

Vasopressor use during esophagectomy has been reported to increase the risk of postoperative anastomotic leak and associated morbidity. We sought to assess the association between vasopressor use and fluid (crystalloid and colloid) administration and anastomotic leak following open esophagectomy. Patients who underwent open Ivor Lewis esophagectomy were identified from a prospective institutional database. The primary outcome was postoperative anastomotic leak (any grade) and analyzed using logistic regression models. Postoperative anastomotic leak developed in 52 of 327 consecutive patients (16%) and was not significantly associated with vasopressor use or fluid administered in either univariable or multivariable analyses. Increasing body mass index was the only significant characteristic of both univariable (P = 0.004) and multivariable analyses associated with anastomotic leak (odds ratio, 1.05; 95% confidence interval, 1.01-1.09; P = 0.007). Of the 52 patients that developed an anastomotic leak, 12 (23%) were grade 1, 21 (40%) were grade 2 and 19 (37%) were grade 3. In our cohort, only body mass index, and not intraoperative vasopressor use and fluid administration, was significantly associated with increased odds of postoperative anastomotic leak following open Ivor Lewis esophagectomy.

Use and Outcomes of Epidural Analgesia in Upper Gastrointestinal Tract Cancer Resections

BACKGROUND

Epidural analgesia (EA) is an appealing adjunct for esophageal and gastric cancer patients. It remains unclear whether EA usage affects postoperative outcomes. There are no national data on the trends of EA utilization for these procedures. This study aims to use the American College of Surgeons National Surgical Quality Improvement Program (NSQIP) to study the utilization and outcomes of EA in open upper GI tract cancer resections.

MATERIALS AND METHODS

A retrospective review of NSQIP was performed for patients undergoing open elective esophagectomies and gastrectomies for nonmetastatic cancer between 2014 and 2017. An Armitage trend test was performed. The population was propensity matched and assessed.

RESULTS

There were 4802 esophagectomies performed. Twenty-nine percent of patients received EA. Of 2599 gastrectomies, 18% of patients received EA. The recent trends of EA use for esophagectomies (EA range [26.9%, 30.3%] P = 0.6535) and gastrectomies (EA [16.9%, 18.4%], P = 0.7797) remain stable. Propensity matching was performed, and the groups with and without EA were compared. For esophagectomies, EA was associated with blood transfusions (EA 14% versus No EA 10.8%, P = 0.0156). For gastrectomies, EA was associated with longer length of stay (LOS) (EA median [IQR] 8 [7,11] versus No EA 7 [6,11], P = 0.0002).

CONCLUSIONS

Despite the current opioid epidemic, the recent trends of EA for esophageal and gastric cancer patients remain stable. EA was associated with blood transfusions for esophagectomies and with a longer LOS for gastrectomies. Therefore, EA should be carefully considered, and its analgesic efficacy in this population should be investigated closely in future studies.

The impact of epidural catheter insertion level on pain control after esophagectomy for esophageal cancer

BACKGROUND

Although the effectiveness of epidural anesthesia on pain control after esophagectomy has been reported, the appropriate insertion level of the epidural catheter remains unclear for adequate postoperative pain control. We investigated the relationship between the epidural catheter insertion level and postoperative pain control after esophagectomy for esophageal cancer.

METHODS

We analyzed retrospectively 63 patients who underwent McKeown esophagectomy for esophageal cancer between October 2014 and November 2018. The epidural catheter was inserted at the T4-T10 level before general anesthesia induction, and epidural anesthesia was started during the operation. In the analysis, the epidural catheter insertion level was divided into three groups (over T6/T7, T7/T8, and under T8/T9) and determined. Postoperative pain was evaluated a numeric rating scale (NRS) for at least 7 postoperative days, and the first NRS after extubation was used to evaluate the impact of the epidural catheter insertion level on pain control.

RESULTS

Ten patients (15.9%) failed pain control. The χ² test and a forward stepwise logistic regression analysis revealed that only the epidural catheter insertion level affected pain control (P < 0.05). The T7/T8 insertion level significantly decreased postoperative pain after esophagectomy. In the subgroup analysis, epidural catheter insertion under T8/T9 significantly increased postoperative pain after esophagectomy when thoracoscopy/laparoscopy was assisted. No significant differences were observed in the incidence of postoperative complications among the epidural catheter insertion levels.

CONCLUSIONS

The T7/T8 epidural catheter insertion level contributed to postoperative pain relief and could lead to enhanced recovery after esophagectomy for esophageal cancer.

Epidural analgesia and avoidance of blood transfusion are associated with reduced mortality in patients with postoperative pulmonary complications following thoracotomic esophagectomy: a retrospective cohort study of 335 patients

Background

Postoperative pulmonary complications (PPCs) represent the most frequent complications after esophagectomy. The aim of this study was to identify modifiable risk factors for PPCs and 90-days mortality related to PPCs after esophagectomy in esophageal cancer patients.

Methods

This is a single center retrospective cohort study of 335 patients suffering from esophageal cancer who underwent esophagectomy between 1996 and 2014 at a university hospital center. Statistical processing was conducted using univariate and multivariate stepwise logistic regression analysis of patient-specific and procedural risk factors for PPCs and mortality.

Results

The incidence of PPCs was 52% (175/335) and the 90-days mortality rate of patients with PPCs was 8% (26/335) in this study cohort. The univariate and multivariate analysis revealed the following independent risk factors for PPCs and its associated mortality. ASA score ≥ 3 was the only independent patient-specific risk factor for the incidence of PPCs and 90-days mortality of patients with an odds ratio for PPCs being 1.7 (1.1–2.6 95% CI) and an odds ratio of 2.6 (1.1–6.2 95% CI) for 90-days mortality. The multivariate approach depicted two independent procedural risk factors including transfusion of packed red blood cells (PRBCs) odds ratio of 1.9 (1.2–3 95% CI) for PPCs and an odds ratio of 5.0 (2.0–12.6 95% CI) for 90-days mortality; absence of thoracic epidural anesthesia (TEA) revealed the highest odds ratio 2.0 (1.01–3.8 95% CI) for PPCs and an odds ratio of 3.9 (1.6–9.7 95% CI) for 90-days mortality.

Conclusion

In esophageal cancer patients undergoing esophagectomy via thoracotomy, epidural analgesia and the avoidance of intraoperative blood transfusion are significantly associated with a reduced 90-days mortality related to PPCs.

Influence of perioperative anaesthetic and analgesic interventions on oncological outcomes: a narrative review

Surgery is an important treatment modality for the majority of solid organ cancers. Unfortunately, cancer recurrence following surgery of curative intent is common, and typically results in refractory disease and patient death. Surgery and other perioperative interventions induce a biological state conducive to the survival and growth of residual cancer cells released from the primary tumour intraoperatively, which may influence the risk of a subsequent metastatic disease. Evidence is accumulating that anaesthetic and analgesic interventions could affect many of these pathophysiological processes, influencing risk of cancer recurrence in either a beneficial or detrimental way. Much of this evidence is from experimental in vitro and in vivo models, with clinical evidence largely limited to retrospective observational studies or post hoc analysis of RCTs originally designed to evaluate non-cancer outcomes. This narrative review summarises the current state of evidence regarding the potential effect of perioperative anaesthetic and analgesic interventions on cancer biology and clinical outcomes. Proving a causal link will require data from prospective RCTs with oncological outcomes as primary endpoints, a number of which will report in the coming years. Until then, there is insufficient evidence to recommend any particular anaesthetic or analgesic technique for patients undergoing tumour resection surgery on the basis that it might alter the risk of recurrence or metastasis.

The evolution of fast track protocols after oesophagectomy

Fast track is a standardised goal directed patient's care pathway that aims to facilitate recovery following surgery. Currently, there are large variations in the fast track protocols used in oesophagectomy due to the complexity of the procedure. The objective of this systematic review is to assess the evolution of fast track protocols following oesophagectomy since its implementation and the resulting effect on postoperative outcomes. Relevant electronic databases were searched for studies assessing the clinical outcome from fast track in oesophagectomy and also those assessing the effects of the individual key components in fast track protocols. The search yielded twenty-three publications regarding fast track implementation in oesophagectomy. A pattern of consistent evolution in fast-track protocols was clearly demonstrated and these have shown variations in the core-identified components across the studies. However, evolution in fast track protocols over time showed, an overall improvement in length of stay, anastomotic leak, pulmonary complications and mortality over time. Thirty publications were included that evaluated specific components of fast track protocols, with an increasing trend towards addressing the nutritional aspect in oesophagectomy care in more recent years. The variations in the key components of fast track protocol of care identify the need for continued assessment and identification for areas of improvement. In the future incremental gains through focused improvements in key components will lend itself to even better postoperative outcomes and patient experience during oesophageal cancer treatment.

Effect of restrictive fluid therapy with hydroxyethyl starch during esophagectomy on postoperative outcomes: a retrospective cohort study

BACKGROUND

To improve prognosis after esophageal surgery, intraoperative fluid optimization is important. Herein, we hypothesized that hydroxyethyl starch administration during esophagectomy reduce the total amount of fluid infused and it could have a positive effect on postoperative complication occurrence and mortality.

METHODS

All consecutive adult patients who underwent elective esophageal surgery for cancer were studied. The primary outcome was the development of composite complications including death, cardio-cerebrovascular complications, respiratory complications, renal complications, gastrointestinal complications, sepsis, empyema or abscess, and multi-organ failure. The relationship between perioperative variables and composite complication was evaluated using multivariable logistic regression.

RESULTS

Of 892 patients analyzed, composite complications developed in 271 (30.4%). The higher hydroxyethyl starch ratio in total fluid had a negative relationship with the total fluid infusion amount (r = - 0.256, P <  0.001). In multivariable analysis, intraoperatively administered total fluid per weight per hour (odds ratio, 1.248; 95% CI, 1.153-1.351; P <  0.001) and HES-to-crystalloid ratio (odds ratio, 2.125; 95% CI, 1.521-2.969; P <  0.001) were associated with increased risks of postoperative composite outcomes.

CONCLUSIONS

Although hydroxyethyl starch administration reduces the total fluid infusion amount during esophageal surgery for cancer, intravenous hydroxyethyl starch infusion is associated with an increasing risk of postoperative composite complications.

Dose determination of sufentanil for intravenous patient-controlled analgesia with background infusion in abdominal surgeries: A random study

Objectives

Sufentanil has been widely used in epidural PCA, while its use in intravenous PCA has rarely been reported. Based on its use in target controlled infusion, we reckoned that the effect-site concentration of sufentanil would be steady if background infusion is given in intravenous PCA. This prospective, single center, randomized study with a three arm parallel group design aims to find out the appropriate dose of sufentanil when used in intravenous PCA with background infusion in abdominal surgeries.

Methods

Patients diagnosed with gastrointestinal cancer and consented to the study were recruited. The analgesia pump with one of three different doses of sufentanil (1.5, 2.0 or 2.5 μg/kg) was attached to the patient through peripheral venous line right after surgery. The primary endpoint was pain scale VAS up to 48 hours postoperatively.

Results

In our study 90 patients were analyzed. In group B (SF 2.0) and C (SF2.5), patients had better pain relief than in group A (SF 1.5). There was no difference between group B and C in pain intensity at rest. While in group C more patients got pain relived at activity than in group B. All three groups had low and similar incidence of adverse effects of sufentanil.

Conclusion

The dose 2.5 μg/kg of sufentanil with background infusion is preferred because of better pain alleviation at activity without increase of adverse effects up to 48 hours after surgery.

Recent progress in perioperative management of patients undergoing esophagectomy for esophageal cancer

Esophagectomy remains the mainstay of curative intent treatment for esophageal cancer. Oncologic esophagectomy is a highly invasive surgery and both morbidity and mortality rates still remain high. Recently, it has been revealed that multidisciplinary perioperative management can decrease the postoperative complications after esophagectomy. In this review, we summarized the recent progress in each component of multidisciplinary perioperative care bundle, including oral hygiene, cessation of smoking and alcohol, respiratory training, measurement of physical fitness, swallowing evaluation and rehabilitation, nutritional support, pain control and management of delirium. The accumulation of evidence and the popularization of knowledge will increase safety of esophagectomy and thus improve the outcome of patients with esophageal cancer.

Perioperative benefit and outcome of thoracic epidural in esophageal surgery: a clinical review

Surgery for esophageal cancer is a highly stressful and painful procedure, and a significant amount of analgesics may be required to eliminate perioperative pain and blunt the stress response to surgery. Proper management of postoperative pain has invariably been shown to reduce the incidence of postoperative complications and accelerate recovery. Neuraxial analgesic techniques after major thoracic and upper abdominal surgery have long been established to reduce respiratory, cardiovascular, metabolic, inflammatory, and neurohormonal complications.The aim of this review is to evaluate and discuss the relevant clinical benefits and outcome, as well as the possibilities and limits of thoracic epidural anesthesia/analgesia (TEA) in the setting of esophageal resections. A comprehensive search of original articles was conducted investigating relevant literature on MEDLINE, Cochrane reviews, Google Scholar, PubMed, and EMBASE from 1985 to July2017. The relationship between TEA and important endpoints such as the quality of postoperative pain control, postoperative respiratory complications, surgical stress-induced immunosuppression, the overall postoperative morbidity, length of hospital stay, and major outcomes has been explored and reported. TEA has proven to enable patients to mobilize faster, cooperate comfortably with respiratory physiotherapists and achieve satisfactory postoperative lung functions more rapidly. The superior analgesia provided by thoracic epidurals compared to that from parenteral opioids may decrease the incidence of ineffective cough, atelectasis and pulmonary infections, while the associated sympathetic block has been shown to enhance bowel blood flow, prevent reductions in gastric conduit perfusion, and reduce the duration of ileus. Epidural anesthesia/analgesia is still commonly used for major 'open' esophageal surgery, and the recognized advantages in this setting are soundly established, in particular as regards the early recovery from anesthesia, the quality of postoperative pain control, and the significantly shorter duration of postoperative mechanical ventilation. However, this technique requires specific technical skills for an optimal conduction and is not devoid of risks, complications, and failures.

Towards optimal intraoperative conditions in esophageal surgery: A review of literature for the prevention of esophageal anastomotic leakage

BACKGROUND

Esophageal anastomotic leakage (EAL) is a severe complication following gastric and esophageal surgery for cancer. Several non-modifiable, patient or surgery related risk factors for EAL have been identified, however, the contribution of modifiable intraoperative parameters remains undetermined. This review provides an overview of current literature on potentially modifiable intraoperative risk factors for EAL.

MATERIALS AND METHODS

The PubMed, EMBASE and Cochrane databases were searched by two researchers independently. Clinical studies published in English between 1970 and January 2017 that evaluated the effect of intraoperative parameters on the development of EAL were included. Levels of evidence as defined by the Centre of Evidence Based Medicine (CEBM) were assigned to the studies.

RESULTS

A total of 25 articles were included in the final analysis. These articles show evidence that anemia, increased amount of blood loss, low pH and high pCO2 values, prolonged duration of procedure and lack of surgical experience independently increase the risk of EAL. Supplemental oxygen therapy, epidural analgesia and selective digestive decontamination seem to have a beneficial effect. Potential risk factors include blood pressure, requirement of blood products, vasopressor use and glucocorticoid administration, however the results are ambiguous.

CONCLUSION

Apart from fixed surgical and patient related factors, several intraoperative factors that can be modified in clinical practice can influence the risk of developing EAL. More prospective, observational studies are necessary focusing on modifiable intraoperative parameters to assess more evidence and to elucidate optimal values of these factors.