Trends in hospital volume and operative mortality for high-risk surgery

Changes in hospital mortality for United States intensive care unit admissions from 1988 to 2012

Introduction

A decrease in disease-specific mortality over the last twenty years has been reported for patients admitted to United States (US) hospitals, but data for intensive care patients are lacking. The aim of this study was to describe changes in hospital mortality and case-mix using clinical data for patients admitted to multiple US ICUs over the last 24 years.

Methods

We carried out a retrospective time series analysis of hospital mortality using clinical data collected from 1988 to 2012. We also examined the impact of ICU admission diagnosis and other clinical characteristics on mortality over time. The potential impact of hospital discharge destination on mortality was also assessed using data from 2001 to 2012.

Results

For 482,601 ICU admissions there was a 35% relative decrease in mortality from 1988 to 2012 despite an increase in age and severity of illness. This decrease varied greatly by diagnosis. Mortality fell by >60% for patients with chronic obstructive pulmonary disease, seizures and surgery for aortic dissection and subarachnoid hemorrhage. Mortality fell by 51% to 59% for six diagnoses, 41% to 50% for seven diagnoses, and 10% to 40% for seven diagnoses. The decrease in mortality from 2001 to 2012 was accompanied by an increase in discharge to post-acute care facilities and a decrease in discharge to home.

Conclusions

Hospital mortality for patients admitted to US ICUs has decreased significantly over the past two decades despite an increase in the severity of illness. Decreases in mortality were diagnosis specific and appear attributable to improvements in the quality of care, but changes in discharge destination and other confounders may also be responsible.

Expressing death risk as condensed life experience and death intensity

Some risk exposures, including many medical and surgical procedures, typically carry hazards of death that are difficult to convey and appreciate in absolute terms. I propose presenting the death risk as a condensed life experience (i.e., the equivalent amount of life T that would carry the same cumulative mortality hazard for a person of the same age and sex based on life tables). For example, if the risk of death during an elective 1-hour procedure is 0.01%, and same-age and same-sex people have a 0.01% death risk over 1 month, one can inform the patient that "this procedure carries the same death risk as living 1 month of normal life." Comparative standards from other risky activities or from a person with the same disease at the same stage and same predictive profile could also be used. A complementary metric that may be useful to consider is the death intensity. The death intensity λ is the hazard function that shows the fold-risk estimate of dying compared with the reference person. The death intensity can vary substantially for different phases of the event, operation, or procedure (e.g., intraoperative, early postoperative, late postoperative), and this variability may also be useful to convey. T will vary depending on the time window for which it is computed. I present examples for calculating T and λ using literature data on accidents, ascent to Mount Everest, and medical and surgical procedures.

Endoscopic Therapy of Neoplasia Related to Barrett's Esophagus and Endoscopic Palliation of Esophageal Cancer

Background

Barrett's esophagus (BE) is the most important identifiable risk factor for the progression to esophageal adenocarcinoma.

Methods

This article reviews the current endoscopic therapies for BE with high-grade dysplasia and intramucosal cancer and briefly discusses the endoscopic palliation of advanced esophageal cancer.

Results

The diagnosis of low-grade or high-grade dysplasia (HGD) is based on several cytologic criteria that suggest neoplastic transformation of the columnar epithelium. HGD and carcinoma in situ are regarded as equivalent. The presence of dysplasia, particularly HGD, is also a risk factor for synchronous and metachronous adenocarcinoma. Dysplasia is a marker of adenocarcinoma and also has been shown to be the preinvasive lesion. Esophagectomy has been the conventional treatment for T1 esophageal cancer and, although debated, is an appropriate option in some patients with HGD due to the presence of occult cancer in over one-third of patients.

Conclusions

Endoscopic ablative modalities (eg, photodynamic therapy and cryoablation) and endoscopic resection techniques (eg, endoscopic mucosal resection) have demonstrated promising results. The significant morbidity and mortality of esophagectomy makes endoscopic treatment an attractive potential option.

Hospital volume and outcomes of cardiothoracic surgery in Japan: 2005-2009 national survey

OBJECTIVES

To elucidate the relationship between hospital volume and cardiothoracic surgical outcomes in Japan using the annual survey data, obtained between 2005 and 2009, collected by the Committee for Scientific Affairs of the Japanese Association for Thoracic Surgery.

METHODS

The relationship between hospital volume and 30-day mortality was analyzed using a logistic regression model. The empirical Bayes (EB) method was also used to stabilize any large variation resulting from a small sample size. Hospitals, whose lower limit of the EB mortality 95 % confidence interval was above the mean EB mortality of all hospitals, were defined as those with "inferior outcomes". The surgical procedures analyzed were coronary artery bypass grafting (CABG: elective + emergency), elective CABG, emergency CABG, single-valve surgery, surgery for acute type A dissection, open heart surgery for newborns, open heart surgery for infants, surgery for lung cancer, and surgery for esophageal cancer.

RESULTS

There were large variations in 30-day mortality for all procedures, particularly in the lower-volume hospitals. There was a significant but weak inverse correlation between the hospital volume and the 30-day mortality rate for elective CABG, emergency CABG, single valve surgery, surgery for acute type A dissection, and lung cancer surgery. There was no correlation between hospital volume and the 30-day morality for open heart surgery for newborns and infants, and esophageal cancer surgery. After EB method adjustment, there was no hospital with inferior outcomes for conventional operations such as elective CABG, single-valve surgery and lung cancer surgery. The ratio of hospitals with inferior outcomes in more complex procedures was 1.8 % for open heart surgery for newborns, 0.8 % for open heart surgery for infants, and 0.2 % for esophageal cancer surgery.

CONCLUSION

There is a weak or no inverse correlation between the hospital volume and the mortality in cardiothoracic surgery in Japan. Most of the low-volume hospitals are not associated with inferior outcomes. The performance of the lower-volume hospitals should be carefully scrutinized using risk adjustment.

International Cancer of the Pancreas Screening (CAPS) Consortium summit on the management of patients with increased risk for familial pancreatic cancer

BACKGROUND

Screening individuals at increased risk for pancreatic cancer (PC) detects early, potentially curable, pancreatic neoplasia.

OBJECTIVE

To develop consortium statements on screening, surveillance and management of high-risk individuals with an inherited predisposition to PC.

METHODS

A 49-expert multidisciplinary international consortium met to discuss pancreatic screening and vote on statements. Consensus was considered reached if ≥ 75% agreed or disagreed.

RESULTS

There was excellent agreement that, to be successful, a screening programme should detect and treat T1N0M0 margin-negative PC and high-grade dysplastic precursor lesions (pancreatic intraepithelial neoplasia and intraductal papillary mucinous neoplasm). It was agreed that the following were candidates for screening: first-degree relatives (FDRs) of patients with PC from a familial PC kindred with at least two affected FDRs; patients with Peutz-Jeghers syndrome; and p16, BRCA2 and hereditary non-polyposis colorectal cancer (HNPCC) mutation carriers with ≥ 1 affected FDR. Consensus was not reached for the age to initiate screening or stop surveillance. It was agreed that initial screening should include endoscopic ultrasonography (EUS) and/or MRI/magnetic resonance cholangiopancreatography not CT or endoscopic retrograde cholangiopancreatography. There was no consensus on the need for EUS fine-needle aspiration to evaluate cysts. There was disagreement on optimal screening modalities and intervals for follow-up imaging. When surgery is recommended it should be performed at a high-volume centre. There was great disagreement as to which screening abnormalities were of sufficient concern to for surgery to be recommended.

CONCLUSIONS

Screening is recommended for high-risk individuals, but more evidence is needed, particularly for how to manage patients with detected lesions. Screening and subsequent management should take place at high-volume centres with multidisciplinary teams, preferably within research protocols.

Population-based trends in urinary diversion among patients undergoing radical cystectomy for bladder cancer

What's known on the subject? and what does the study add?: Variations in the type of urinary diversion exist for patients undergoing radical cystectomy. Although its use has been increasing from 2001 to 2008, patients who are older, female, and primary insured by Medicaid are less likely to receive continent diversions. Furthermore, patients treated surgically at high-volume and teaching hospitals are more likely to receive continent diversions.

OBJECTIVE

To describe the contemporary trends in urinary diversion among patients undergoing radical cystectomy (RC) for bladder cancer; and elucidate whether socioeconomic disparities persist in the type of diversion performed in the USA from a population-based cohort.

PATIENTS AND METHODS

Using the Nationwide Inpatient Sample, we identified patients who underwent RC for bladder cancer between 2001 and 2008. Multivariable regression models were used to identify patient and hospital covariates associated with continent urinary diversion and enumerate predicted probabilities for statistically significant variables over time.

RESULTS

Overall, 55635 (92%) patients undergoing RC for bladder cancer received incontinent urinary diversion, while 4552 (8%) patients received continent diversion from 2001 to 2008. Receipt of continent urinary diversion increased from 6.6% in 2001-2002 to 9.4% in 2007-2008 (P < 0.001 for trend). Patients who were older (odds ratio [OR] 0.93; P < 0.001), female (OR 0.52; P < 0.001) and insured by Medicaid (OR 0.54; P = 0.002) were less likely to receive continent urinary diversion. However, patients treated at teaching (OR 2.14; P < 0.001) and high-volume hospitals (OR 2.39; P = 0.04) had higher odds of continent urinary diversion. Predicted probabilities of continent diversion remained lower for female patients, Medicaid insurance status, and non-teaching and medium/low-volume hospitals over time.

CONCLUSIONS

In this nationally representative sample of hospitals from 2001 to 2008, the use of continent diversion in RC gradually increased. Although variations in urinary diversion exist by hospital teaching status, case volume, patient gender and primary health insurance, increased attention in expanding the use of continent diversions may help reduce these disparities for patients undergoing RC for bladder cancer.

An increase in the number of nurses with baccalaureate degrees is linked to lower rates of postsurgery mortality

An Institute of Medicine report has called for registered nurses to achieve higher levels of education, but health care policy makers and others have limited evidence to support a substantial increase in the number of nurses with baccalaureate degrees. Using Pennsylvania nurse survey and patient discharge data from 1999 and 2006, we found that a ten-point increase in the percentage of nurses holding a baccalaureate degree in nursing within a hospital was associated with an average reduction of 2.12 deaths for every 1,000 patients--and for a subset of patients with complications, an average reduction of 7.47 deaths per 1,000 patients. We estimate that if all 134 hospitals in our study had increased the percentage of their nurses with baccalaureates by ten points during our study's time period, some 500 deaths among general, orthopedic, and vascular surgery patients might have been prevented. The findings provide support for efforts to increase the production and employment of baccalaureate nurses.

Excellent outcomes of simultaneous pancreas kidney transplantation in patients from rural and urban Australia: a national service experience

BACKGROUND

Simultaneous pancreas and kidney (SPK) transplantation is performed to restore normoglycemia and renal function in patients with type 1 diabetes mellitus and end-stage renal failure. The National Pancreas Transplant Unit (NPTU) in Sydney provides a service to a population spread across 7.4 million km. We aimed to see if SPK transplantation outcomes differed between recipients from metropolitan (M) centers and those from nonmetropolitan (NM) regions.

METHODS

Using a prospectively collected database, patient and graft survival were analyzed. Patients were categorized according to region of residence and by distance from the NPTU.

RESULTS

Between January 2001 and May 2010, 165 patients underwent first-time SPK transplantation at the NPTU. There were 126 M and 39 NM recipients. Median distance from the NPTU was 732 km for donors (range, 0-3930 km) and 887 km for recipients (range, 1-4114 km). Median follow-up was 5.2 years (range, 1.1-10.3 years). Actuarial 5-year patient survival was 94% in M and 95% in NM groups. At 5 years, non-death-censored pancreas graft survival was 75% and 82% among M and NM patients, respectively, while kidney allograft survival was 88% in M and 92% in NM groups. There was no significant difference in patient and graft survival between groups. Distance of donor and recipient from the NPTU did not influence graft or patient survival.

CONCLUSIONS

SPK transplantation can be performed with excellent outcomes at a national center with a vast catchment area, irrespective of donor or recipient location.

Safety in the operating theatre--a transition to systems-based care

All surgeons want the best, safest care for their patients, but providing this requires the complex coordination of multiple disciplines to ensure that all elements of care are timely, appropriate, and well organized. Quality-improvement initiatives are beginning to lead to improvements in the quality of care and coordination amongst teams in the operating room. As the population ages and patients present with more complex disease pathology, the demands for efficient systematization will increase. Although evidence suggests that postoperative mortality rates are declining, there is substantial room for improvement. Multiple quality metrics are used as surrogates for safe care, but surgical teams--including surgeons, anaesthetists, and nurses--must think beyond these simple interventions if they are to effectively communicate and coordinate in the face of increasing demands.

Changes in the management of infrarenal abdominal aortic aneurysm disease in Sweden

Background

Treatment of abdominal aortic aneurysm (AAA) has changed over time, with endovascular repair (EVAR) being the main technical revolution. This study assessed the effect of this change on outcome on a national basis over a 17-year interval.

Methods

Primary infrarenal AAA repairs in Swedish residents aged 50 years and older, in the Swedish Vascular Registry (Swedvasc) 1994–2010, were analysed. The rate per 100 000 population, patient characteristics, operative technique and outcome were assessed for the intervals 1994–1999, 2000–2005 and 2006–2010.

Results

Some 11 336 intact aneurysm repairs were performed. The overall rate per 100 000 increased (18·4 in 1994–1999, 19·4 in 2000–2005 and 24·0 in 2006–2010; P &lt; 0·001), most noticeably among older people (18 per cent increase among those aged 50–64 years, P = 0·004; 27 per cent in 65–79-year-olds, P &lt; 0·001; 128 per cent in those aged at least 80 years, P &lt; 0·001). The use of EVAR increased rapidly after 2005 (rate: 0·6 in 1994–1999, 4·4 in 2000–2005 and 11·8 in 2006–2010; P &lt; 0·001). The 30-day mortality rate decreased after open repair (4·7, 3·4 and 2·7 per cent respectively; P &lt; 0·001), but was stable after EVAR (2·6, 2·2 and 1·6 per cent; P = 0·227). Some 4972 ruptured aneurysm (rAAA) repairs were performed. The rate decreased after 2005 (9·3 in 1993–1999, 9·3 in 2000–2005 and 8·4 in 2006–2010; P = 0·006). The use of EVAR for rAAA increased over time (rate: 0, 0·5 and 1·6 respectively; P &lt; 0·001), whereas open repair decreased (9·3, 8·8 and 6·8; P &lt; 0·001). Thirty-day mortality decreased over time (38·3, 32·8 and 28·4 per cent; P &lt; 0·001).

Conclusion

The introduction of EVAR has been associated with an increased number of intact AAA repairs, which has accelerated recently, whereas the rate of rAAA repair has started to decline. Simultaneously, outcomes have improved.

Hospital and surgeon volume in relation to survival after esophageal cancer surgery in a population-based study

PURPOSE

The influence of hospital and surgeon volume on survival after esophageal cancer surgery deserves clarification, particularly the prognosis after the early postoperative period. The interaction between hospital and surgeon volume, and the influence of known prognostic factors need to be taken into account.

METHODS

A nationwide Swedish population-based cohort study of 1,335 patients with esophageal cancer who underwent esophageal resection in 1987 to 2005, with follow-up for survival until February 2011, was conducted. The associations between annual hospital volume, annual surgeon volume, and cumulative surgeon volume and risk of mortality were calculated with multivariable parametric survival analysis, providing hazard ratios (HRs) with 95% CIs. HRs were mutually adjusted for the surgery volume variables and further adjusted for the prognostic factors age, sex, comorbidity, calendar period, tumor stage, tumor histology, and neoadjuvant therapy.

RESULTS

There was no independent association between annual hospital volume and overall survival, and hospital volume was not associated with short-term mortality after adjustment for hospital clustering effects. A combination of higher annual and cumulative surgeon volume reduced the mortality occurring at least 3 months after surgery (P trend < .01); the HR was 0.78 (95% CI, 0.65 to 0.92) comparing surgeons with both annual and cumulative volume above the median with those below the median. These results remained when hospital and surgeon clustering were taken into account.

CONCLUSION

Because surgeon volume rather than hospital volume independently influences the prognosis after esophageal cancer surgery, centralization of this surgery to fewer surgeons seems warranted.

Aortic valve and ascending aorta guidelines for management and quality measures: executive summary

The Society of Thoracic Surgeons Clinical Practice Guidelines are intended to assist physicians and other health care providers in clinical decision making by describing a range of generally acceptable approaches for the diagnosis, management, or prevention of specific diseases or conditions. These guidelines should not be considered inclusive of all proper methods of care or exclusive of other methods of care reasonably directed at obtaining the same results. Moreover, these guidelines are subject to change over time, without notice. The ultimate judgment regarding the care of a particular patient must be made by the physician in light of the individual circumstances presented by the patient.

Surgical approaches to invasive adenocarcinoma of the gastroesophageal junction

Despite a plethora of data, the optimal surgical approach to invasive adenocarcinoma of the gastroesophageal (GE) junction remains controversial. To quote Dr. Valerie Rusch, "Strong individual preferences and some degree of surgical mystique often govern the selection of operation for resection of GE junction adenocarcinomas."1 The fırst of these controversies is whether the optimal open surgical approach should be via the transabdominal, transthoracic (two-incision Ivor Lewis or three-incision McKeown), or transhiatal route. Proponents of the transthoracic or transhiatal routes have voiced strong opinions on the potential advantages and disadvantages of each approach (Table 1). It is clear from most large retrospective series that, in experienced hands, excellent results can be achieved by either approach. The principal advantage of the transthoracic route is the ability to perform a radical mediastinal lymphadenectomy en bloc with the primary tumor, the theory being that a more aggressive lymph node dissection would be associated with an improved long-term outcome. To date, however, this association of a more aggressive lymphadenectomy with improved outcome has remained elusive in most gastrointestinal malignancies, including esophageal cancer. Proponents of the transhiatal approach cite similar lymph node retrieval rates, the potential for lower short-term morbidity, and the potential for similar long-term outcomes.2 With the advent of newer technology, the controversy regarding the optimal surgical approach to adenocarcinoma of the GE junction has evolved in yet another direction, with proponents of a minimally invasive approach, citing even lower perioperative morbidity and mortality, again with comparable or even superior long-term oncologic results.

Health benefits and cost effectiveness of endoscopic and nonendoscopic cytosponge screening for Barrett's esophagus

BACKGROUND & AIMS

We developed a model to compare the health benefits and cost effectiveness of screening for Barrett's esophagus by either Cytosponge™ or by conventional endoscopy vs no screening, and to estimate their abilities to reduce mortality from esophageal adenocarcinoma.

METHODS

We used microsimulation modeling of a hypothetical cohort of 50-year-old men in the United Kingdom with histories of gastroesophageal reflux disease symptoms, assuming the prevalence of Barrett's esophagus to be 8%. Participants were invited to undergo screening by endoscopy or Cytosponge (invitation acceptance rates of 23% and 45%, respectively), and outcomes were compared with those from men who underwent no screening. We estimated the number of incident esophageal adenocarcinoma cases prevented and the incremental cost-effectiveness ratio of quality-adjusted life years (QALYs) of the different strategies. Patients found to have high-grade dysplasia or intramucosal cancer received endotherapy. Model inputs included data on disease progression, test accuracy, post-treatment status, and surveillance protocols. Costs and benefits were discounted at 3.5% per year. Supplementary and sensitivity analyses comprised esophagectomy management of high-grade dysplasia or intramucosal cancer, screening by ultrathin nasal endoscopy, and different assumptions of uptake of screening invitations for either strategy.

RESULTS

We estimated that compared with no screening, Cytosponge screening followed by treatment of patients with dysplasia or intramucosal cancer costs an additional $240 (95% credible interval, $196-$320) per screening participant and results in a mean gain of 0.015 (95% credible interval, -0.001 to 0.029) QALYs and an incremental cost-effectiveness ratio of $15.7 thousand (K) per QALY. The respective values for endoscopy were $299 ($261-$367), 0.013 (0.003-0.023) QALYs, and $22.2K. Screening by the Cytosponge followed by treatment of patients with dysplasia or intramucosal cancer would reduce the number of cases of incident symptomatic esophageal adenocarcinoma by 19%, compared with 17% for screening by endoscopy, although this greater benefit for Cytosponge depends on more patients accepting screening by Cytosponge compared with screening by endoscopy.

CONCLUSIONS

In a microsimulation model, screening 50-year-old men with symptoms of gastroesophageal reflux disease by Cytosponge is cost effective and would reduce mortality from esophageal adenocarcinoma compared with no screening.

[Do anesthetic techniques influence postoperative outcomes? Part I]

The influence of anesthetic technique on postoperative outcomes has opened a wide field of research in recent years. High-risk patients undergoing non-cardiac surgery are those who have higher incidence of postoperative complications and mortality. A proper definition of this group of patients should focus maximal efforts and resources to improve the results. In view of the significant reduction in postoperative mortality and morbidity in last 20 years, perioperative research should take into account new indicators to investigate the role of anesthetic techniques on postoperative outcomes. Studies focused on the evaluation of intermediate outcomes would probably discriminate better effectiveness differences between anesthetic techniques. We review some of the major controversies arising in the literature about the impact of anesthetic techniques on postoperative outcomes. We have grouped the impact of these techniques into 9 major investigation areas: mortality, cardiovascular complications, respiratory complications, postoperative cognitive dysfunction, chronic postoperative pain, cancer recurrence, postoperative nausea/vomiting, surgical outcomes and resources utilization. In this first part of the review, we discuss the basis on postoperative outcomes research, mortality, cardiovascular and respiratory complications.

A nomogram predicting severe adverse events after ureteroscopic lithotripsy: 12 372 patients in a Japanese national series

WHAT'S KNOWN ON THE SUBJECT? AND WHAT DOES THE STUDY ADD?: Ureteroscopic lithotripsy sometimes causes severe complications, e.g. septic shock, and the relationship between long operative duration and complication rate has been empirically recognised. But due to the rarity, evidence is limited. We analysed 12372 cases and showed that the complication rate increased according to operative duration, especially for operations taking >90  min. Also, we found that high-volume centres had lower complication rates.

OBJECTIVE

To develop a nomogram to predict severe adverse events (AEs) after ureteroscopic lithotripsy (URSL) including the effects of operative duration and hospital volume.

PATIENTS AND METHODS

We identified patients undergoing URSL from the Japanese Diagnosis Procedure Combination database between 2007 and 2010, and defined severe adverse events as (i) in-hospital mortality; (ii) postoperative medication including catecholamine, γ globulin, protease inhibitors, medications for disseminated intravascular coagulation and transfusion; and (iii) postoperative interventions including percutaneous nephrostomy, central vein catheterisation, intensive care unit, dialysis, mechanical cardiopulmonary support. Univariate and multivariate logistic regression models addressed the occurrence of severe AEs.

RESULTS

Of 12  372 patients, 296 patients (2.39%) had severe AEs. Multivariate analysis showed a positive linear trend of operative duration and severe AEs (odds ratio [OR] 1.58 in 90-119  min to OR 4.28 in ≥210 min compared with ≤ 59 min; each P < 0.05) and an inverse relationship between hospital volume and severe AEs (OR 0.64 in ≥39 URSLs/year compared with ≤ 15 URSLs/year; P = 0.004) with adjustment for other significant factors including sex, age, Charlson comorbidity index, type of anaesthesia and type of admission. A nomogram and a calibration plot based on these results were well-fitted to predict a probability between 0.01 and 0.10 (concordance index 0.677).

CONCLUSION

Severe AEs after URSL were associated with longer operative duration and lower hospital volume, and were accurately predicted using the present nomogram.

The impact of abdominal aortic aneurysm surgery on intensive care unit resources in an Irish tertiary centre

BACKGROUND

The potential impact of surgical service reconfiguration on intensive care unit (ICU) resources needs to be assessed.

AIMS

To determine the resources required to provide post-operative ICU care to patients undergoing open abdominal aortic aneurysm (AAA) repair or endovascular aneurysm repair (EVAR) at a specialist centre in the HSE South area

METHODS

For 198 patients, we calculated: (1) ICU bed-days; (2) organ support required; and (3) monetary cost of ICU care.

RESULTS

In total, 82.8% (101/122) of patients undergoing open AAA repair required post-operative ICU care (52 emergency and 49 elective). Emergency cases required more ICU bed-days (median 4.2 vs. 1.9, p<0.0005) and were more likely to require ventilation (odds ratio, OR 11.7, p<0.0001), inotropes (OR 3.1, p=0.01) or enteral nutrition (OR 23.3, p<0.0001). Mean cost per patient was €3,956 for elective cases and €16,419 for emergency cases. No patient required ICU admission after EVAR (n=76).

CONCLUSIONS

Open AAA surgery places significant demands on ICU resources. The planned reconfiguration of surgical services in Ireland must provide for parallel investment in ICU facilities and expertise.

A critical review of minimally invasive esophagectomy

The advent of minimally invasive esophagectomy (MIE) attempts to decrease postoperative complications and mortality for this high-risk procedure. This review examines techniques in MIE, associated outcomes, and offers a critical appraisal of the literature surrounding this procedure. A Pubmed search was conducted for "minimally invasive esophagectomy" and associated synonyms. In addition, we analyze the outcomes at our institution through a prospectively maintained database. With varied techniques and utilization of different endpoints it is difficult to draw concrete conclusions from the current literature. Overall, however, there is no strong trend toward deceased mortality or decreased pulmonary complications from MIE, but there is a trend toward decreased intraoperative blood loss and shorter intensive care unit and ward stays. Until future studies are completed, MIE remains a useful tool in the armamentarium of the esophageal surgeon, and should be used not in exclusion of other approaches should patient or tumor factors dictate otherwise.

Reducing elective vascular surgery perioperative risk with brief preoperative dietary restriction

Brief preoperative dietary interventions emphasizing reduced calorie and protein intake will decrease perioperative morbidity and mortality associated with vascular operative procedures by modulating maladaptive response to operative stress.

Spirituality and recovery from cardiac surgery: a review

A large research literature attests to the positive influence of spirituality on a range of health outcomes. Recently, a growing literature links spirituality to improved recovery from cardiac surgery. Cardiac surgery has become an increasingly common procedure in the United States, so these results may provide a promising indication for improved treatment of patients undergoing surgery. To our knowledge, a comprehensive review of the literature in this area does not exist. Therefore, this paper reviews the literature relevant to the influence of spirituality on recovery from cardiac surgery. In addition, it proposes a conceptual model that attempts to explicate relationships among the variables studied in the research on this topic. Finally, it discusses limitations, suggests directions for future research, and discusses implications for the treatment of patients undergoing cardiac surgery.

The impact of internal or external transanastomotic pancreatic duct stents following pancreaticojejunostomy. Which one is better? A meta-analysis

BACKGROUND

The use of pancreatic duct stent to improve postoperative outcomes of pancreatic anastomosis remains a matter of debate, and the value of stenting when performing anastomosis for normal pancreas (soft and duct less than 3 mm) needs further study. The aim of the present meta-analysis was to evaluate the perioperative outcomes of patients with stenting during pancreatic anastomosis and compare the effect of external stent with that of internal stent indirectly.

METHODS

A systematic literature search (EMBASE, MEDLINE, PubMed, The Cochrane Library, and Web of Science) was performed to identify studies evaluating external stent or internal stent. Included literature was assessed and extracted by two independent reviewers. A meta-analysis including comparative studies providing data on patients with and without external stenting or internal stenting during pancreaticojejunostomy anastomosis was performed.

RESULTS

Thirteen articles including 1,867 patients were identified for inclusion: five randomized controlled trials study and eight observational clinical studies. Meta-analyses revealed that use of external stent was associated with a significantly decreased risk for pancreatic fistula in total (odds ratio (OR) 0.47; 95 % confidence interval (CI) 0.31-0.71; P = 0.0004; I (2) = 3 %), pancreatic fistula in normal pancreas(OR 0.5; 95 % CI 0.30-0.82; P = 0.007; I (2) = 5 %), and overall morbidity(OR 0.64; 95 % CI 0.45-0.90; P = 0.01; I (2) = 0 %); however, the meta-analysis showed that there were no significant differences between internal stenting and non-stenting groups as regards perioperative outcomes and that in fact it may increase pancreatic fistula rate in normal pancreas(OR 1.97; 95 % CI 1.05-3.69; P = 0.03; I (2) = 0 %).

CONCLUSIONS

The results of this analysis demonstrate a trend toward reduced pancreatic fistula with the use of external pancreatic stents in pancreaticojejunostomy. An internal stent does not impact development of fistula and that in fact it was not useful in a soft pancreas. Our conclusion may be limited to stenting during the duct-to-mucosa pancreaticojejunostomy anastomosis, and the value of stenting during invagination anastomosis needs further study.

Differences in outcomes of oesophageal and gastric cancer surgery across Europe

BACKGROUND

In several European countries, centralization of oesophagogastric cancer surgery has been realized and clinical audits initiated. The present study was designed to evaluate differences in resection rates, outcomes and annual hospital volumes between these countries, and to analyse the relationship between hospital volume and outcomes.

METHODS

National data were obtained from cancer registries or clinical audits in the Netherlands, Sweden, Denmark and England. Differences in outcomes were analysed between countries and between hospital volume categories, adjusting for available case-mix factors.

RESULTS

Between 2004 and 2009, 10 854 oesophagectomies and 9010 gastrectomies were registered. Resection rates in England were 18·2 and 21·6 per cent for oesophageal and gastric cancer respectively, compared with 28·5-29·9 and 41·4-41·9 per cent in the Netherlands and Denmark (P < 0·001). The adjusted 30-day mortality rate after oesophagectomy was lowest in Sweden (1·9 per cent). After gastrectomy, the adjusted 30-day mortality rate was significantly higher in the Netherlands (6·9 per cent) than in Sweden (3·5 per cent; P = 0·017) and Denmark (4·3 per cent; P = 0·029). Increasing hospital volume was associated with a lower 30-day mortality rate after oesophagectomy (odds ratio 0·55 (95 per cent confidence interval 0·42 to 0·72) for at least 41 versus 1-10 procedures per year) and gastrectomy (odds ratio 0·64 (0·41 to 0·99) for at least 21 versus 1-10 procedures per year).

CONCLUSION

Hospitals performing larger numbers of oesophagogastric cancer resections had a lower 30-day mortality rate. Differences in outcomes between several European countries could not be explained by differences in hospital volumes. To understand these differences in outcomes and resection rates, with reliable case-mix adjustments, a uniform European upper gastrointestinal cancer audit with recording of standardized data is warranted.

Cystectomy and urinary diversion in the treatment of bladder cancer without artificial respiration

PURPOSE

To assess the feasibility and performance of radical cystectomy with urinary diversion using exclusively regional anesthesia (i.e. combined spinal thoracic epidural anesthesia, CSTEA).

MATERIALS AND METHODS

In 2011 radical cystectomy with extended pelvic and iliac lymphadenectomy was performed on 14 patients using urinary diversion without applying general anesthesia. Under maintained spontaneous breathing, the patients were awake and responsive during the entire procedure. Postoperatively, pain management took three days with the remaining epidural catheter before oral analgesics were administered. Mobilization and diet restoration were carried out according to the fast-track concept. Outcome measurements included operative time, blood loss, beginning of oral nutrition, beginning of mobilization, postoperative pain levels using numerical and visual analog scales (NAS/VAS), length of hospital stay.

RESULTS

All surgical procedures were performed without any complications. The absence of general anesthesia did not result in any relevant disadvantages. The postoperative progress was normal in all patients. Particularly, cardiopulmonary complications and enteroparesis did not occur. The provided palliative care proved sufficient (NAS max. 3-4). Discharge followed 10 to 22 days after surgery. At the time of discharge, the patients described the procedure to be relatively positive.

CONCLUSIONS

Our data show that CSTEA is an effective technique for radical cystectomy, whereby spontaneous breathing and reduced interference with the cardiopulmonary system potentially lower the perioperative risks especially for high-risk patients. We recommend practice of CSTEA for radical cystectomy to further evaluate and monitor the safety, efficacy, outcomes, and complications of CSTEA.

Hospital-level outcomes associated with laparoscopic colectomy for cancer in the minimally invasive era

BACKGROUND

Compared to the open approach, randomized trials have shown that laparoscopic colectomy is associated with a shorter hospitalization without increases in morbidity or mortality rates. With broader adoption of laparoscopic colectomy for cancer in the USA, it is unclear if laparoscopic colectomy continues to be associated with shorter hospitalization and comparable morbidity.

PURPOSE

The purpose of this study is to determine if hospitals where a greater proportion of colon resections for cancer are approached laparoscopically (laparoscopy rate) achieve improved short-term outcomes compared to hospitals with lower laparoscopy rates.

METHODS

From the 2008-2009 Nationwide Inpatient Sample, we identified hospitals where ≤ 12 colon resections for cancer were reported with ≥ 1 approached laparoscopically. We assessed the correlation between a hospital's laparoscopy rate and risk-standardized outcomes (intra- and postoperative morbidity, in-hospital mortality rates, and average length of stay).

RESULTS

Overall, 6,806 colon resections were performed at 276 hospitals. Variation was noted in hospital laparoscopy rates (median = 52.0 %, range = 3.8-100 %) and risk-standardized intra- (2.7 %, 1.8-8.6 %) and postoperative morbidity (27.8 %, 16.4-53.4 %), in-hospital mortality (0.7 %, 0.3-42.0 %), and average length of stay (7.0 days, 4.9-10.3 days). While no association was noted with in-hospital mortality, higher laparoscopy rates were correlated with lower postoperative morbidity [correlation coefficient (r) = -0.12, p = 0.04) and shorter hospital stays (r  = -0.23, p  <  0.001), but higher intraoperative morbidity (r  =  0.19, p  <  0.001) rates. This was not observed among hospitals with high procedure volumes.

CONCLUSIONS

Higher laparoscopy rates were associated with only slightly lower postoperative morbidity rates and modestly shorter hospitalizations.

The effect of socioeconomic status on staging and treatment decisions in esophageal cancer

BACKGROUND

Optimal treatment choice for patients with esophageal cancer (EC) is complex and largely determined by tumor characteristics, comorbidity, and age.

GOALS

This study describes the role of patient characteristics, among which is socioeconomic status (SES), in EC treatment.

STUDY

Patients diagnosed with primary EC between 1990 and 2008 in the southern part of the Netherlands were identified using the Eindhoven Cancer Registry. Multivariable logistic and proportional hazard regression analyses were used to identify determinants of treatment and survival.

RESULTS

We included 1914 patients, and 37% of them underwent intentionally curative treatment. Low-SES patients were diagnosed at older age (16% vs. 9%, age more than or equal to 80) and with more advanced tumor stages (13% vs. 10%, stage T4) than high-SES patients. Age less than 60 compared with 70 to 79 years [adjusted odds ratio, 4.51; 95% confidence interval (CI), 2.98-6.84] and high SES compared with low SES (adjusted odds ratio 1.59; 95% CI, 1.07-2.37) were independent predictors for curative treatment. Probability of death for high-SES patients undergoing palliative treatment was decreased compared with low-SES patients (hazard ratio, 0.84; 95% CI, 0.71-0.99).

CONCLUSIONS

SES is an important factor in treatment choice of EC. As health care is equally accessible to the whole population in the Netherlands, this suggests that both patient-related and physician-related factors are involved in this phenomenon.

Surgical management in patients with pancreatic cancer: a Queensland perspective

BACKGROUND

Little has been published regarding presenting symptoms, investigations and outcomes for patients with pancreatic cancer in Australia. Data from a series of patients undergoing attempted resection in Queensland, Australia, are presented with the aim of assisting development of consistent strategies in disease management.

METHODS

We reviewed the medical records of 121 patients who underwent attempted surgical resection and who took part in a case-control study between 2007 and 2009. Information relating to symptoms, investigations, surgical procedures and outcomes was captured.

RESULTS

The mean age was 63 years and 60% were men. The most common presenting symptoms were jaundice (64%) and pain (63%). Over 80% of patients had multiple imaging investigations or laparoscopy prior to surgery. Seventy-eight patients (64%) had a completed resection and 23% of these had involved margins. The presence of metastases and/or involvement of vessels or adjacent structures precluded resection in the remaining patients. The 1-year survival for patients whose resections were completed was 77% compared with 51% for those whose tumours were not resectable (P = 0.004). There was no 30-day mortality and 68% of patients were alive 1 year after diagnosis. Resections were performed in 11 different hospitals but over 90% of patients underwent their surgery in one of five high-volume centres.

CONCLUSION

The Queensland experience is consistent with that reported internationally. A significant proportion of attempted resections was not completed because preoperative staging underestimated disease extent. Most patients with potentially resectable disease are being treated in high-volume centres.

Comparative effectiveness research in oncology methodology: observational data

The goal of comparative effectiveness research is to inform clinical decisions between alternate treatment strategies using data that reflect real patient populations and real-world clinical scenarios for the purpose of improving patient outcomes. Observational studies using population-based registry data are increasingly relied on to fill the information gaps created by lack of evidence from randomized controlled trials. Administrative data sets have many advantages, including large sample sizes, long-term follow-up, and inclusion of data on physician and systems characteristics as well as cost. In this review, we describe the characteristics of many of the commonly used population-based data sets and discuss the elements included within these data sets. An overview of common research themes that rely on population-based data and illustrative examples are presented. Finally, an overview of the analytic techniques commonly employed by health services researchers to limit the effects of selection bias and confounding is discussed. The analysis of well-designed studies of comparative effectiveness is complex. However, careful framing, appropriate study design, and application of sophisticated analytic techniques can improve the accuracy of nonrandomized studies. There are multiple areas where the unique characteristics of observational studies can inform medical decision making and health policy, and it is critical to appreciate the opportunities, strengths, and limitations of observational research.

Colorectal cancer with synchronous resectable liver metastases: monocentric management in a hepatobiliary referral center improves survival outcomes

BACKGROUND

Management of patients with synchronous colorectal liver metastases (SCRLM) should be individually tailored. This study compares patients managed by hepatobiliary centers from diagnosis with those referred for liver resection (LR).

METHODS

Between 1998 and 2010, a total of 284 patients with SCRLM underwent resection; 106 resectable patients (1-3 unilobar metastases, diameter <100 mm, liver-only disease) were divided into two groups: 66 managed from diagnosis (group A) and 40 referred for LR (group B).

RESULTS

Group A contained a greater proportion of multiple metastases (55.0 vs. 34.8%, P = 0.042). Group B always received colorectal surgery as up-front treatment (vs. 18.2%, P < 0.0001). In group B, chemotherapy before LR was more common (72.5 vs. 33.3%, P = 0.0001) and lasted longer (P = 0.010). More patients in group B exhibited disease progression before LR (17.5 vs. 3.0%, P = 0.025). Group A underwent fewer surgical procedures (80.3% simultaneous resection vs. 0%, P < 0.00001), with similar short-term outcomes. After a median follow-up of 42.0 months, group A exhibited higher 5 year disease-free survival (DFS, 64.8 vs. 30.8%, P = 0.005) and fewer extrahepatic recurrences (21.5 vs. 47.5%, P = 0.005). The late-referral group (>6 months, n = 24) had shorter median overall survival (OS) and DFS than group A (49.1 and 25.3 months vs. not achieved and not achieved, P < 0.05). The early-referral group exhibited OS and DFS similar to group A. Multivariate analysis confirmed late referral as a negative predictive factor of OS and DFS.

CONCLUSIONS

Monocentric management of SCRLM in hepatobiliary centers is associated with shorter preoperative chemotherapy, better disease control, fewer surgical procedures (simultaneous resection), and, compared with late-referred patients, better survival.

Total knee arthroplasty volume, utilization, and outcomes among Medicare beneficiaries, 1991-2010

CONTEXT

Total knee arthroplasty (TKA) is one of the most common and costly surgical procedures performed in the United States.

OBJECTIVE

To examine longitudinal trends in volume, utilization, and outcomes for primary and revision TKA between 1991 and 2010 in the US Medicare population.

DESIGN, SETTING, AND PARTICIPANTS

Observational cohort of 3,271,851 patients (aged ≥65 years) who underwent primary TKA and 318 563 who underwent revision TKA identified in Medicare Part A data files.

MAIN OUTCOME MEASURES

We examined changes in primary and revision TKA volume, per capita utilization, hospital length of stay (LOS), readmission rates, and adverse outcomes.

RESULTS

Between 1991 and 2010 annual primary TKA volume increased 161.5% from 93,230 to 243,802 while per capita utilization increased 99.2% (from 31.2 procedures per 10,000 Medicare enrollees in 1991 to 62.1 procedures per 10,000 in 2010). Revision TKA volume increased 105.9% from 9650 to 19,871 while per capita utilization increased 59.4% (from 3.2 procedures per 10,000 Medicare enrollees in 1991 to 5.1 procedures per 10,000 in 2010). For primary TKA, LOS decreased from 7.9 days (95% CI, 7.8-7.9) in 1991-1994 to 3.5 days (95% CI, 3.5-3.5) in 2007-2010 (P < .001). For primary TKA, rates of adverse outcomes resulting in readmission remained stable between 1991-2010, but rates of all-cause 30-day readmission increased from 4.2% (95% CI, 4.1%-4.2%) to 5.0% (95% CI, 4.9%-5.0%) (P < .001). For revision TKA, the decrease in hospital LOS was accompanied by an increase in all-cause 30-day readmission from 6.1% (95% CI, 5.9%-6.4%) to 8.9% (95% CI, 8.7%-9.2%) (P < .001) and an increase in readmission for wound infection from 1.4% (95% CI, 1.3%-1.5%) to 3.0% (95% CI, 2.9%-3.1%) (P < .001).

CONCLUSIONS

Increases in TKA volume have been driven by both increases in the number of Medicare enrollees and in per capita utilization. We also observed decreases in hospital LOS that were accompanied by increases in hospital readmission rates.

Perioperative and anaesthetic-related mortality in developed and developing countries: a systematic review and meta-analysis

BACKGROUND

The magnitude of risk of death related to surgery and anaesthesia is not well understood. We aimed to assess whether the risk of perioperative and anaesthetic-related mortality has decreased over the past five decades and whether rates of decline have been comparable in developed and developing countries.

METHODS

We did a systematic review to identify all studies published up to February, 2011, in any language, with a sample size of over 3000 that reported perioperative mortality across a mixed surgical population who had undergone general anaesthesia. Using standard forms, two authors independently identified studies for inclusion and extracted information on rates of anaesthetic-related mortality, perioperative mortality, cardiac arrest, American Society of Anesthesiologists (ASA) physical status, geographic location, human development index (HDI), and year. The primary outcome was anaesthetic sole mortality. Secondary outcomes were anaesthetic contributory mortality, total perioperative mortality, and cardiac arrest. Meta-regression was done to ascertain weighted event rates for the outcomes.

FINDINGS

87 studies met the inclusion criteria, within which there were more than 21·4 million anaesthetic administrations given to patients undergoing general anaesthesia for surgery. Mortality solely attributable to anaesthesia declined over time, from 357 per million (95% CI 324-394) before the 1970s to 52 per million (42-64) in the 1970s-80s, and 34 per million (29-39) in the 1990s-2000s (p<0·00001). Total perioperative mortality decreased over time, from 10,603 per million (95% CI 10,423-10,784) before the 1970s, to 4533 per million (4405-4664) in the 1970s-80s, and 1176 per million (1148-1205) in the 1990s-2000s (p<0·0001). Meta-regression showed a significant relation between risk of perioperative and anaesthetic-related mortality and HDI (all p<0·00001). Baseline risk status of patients who presented for surgery as shown by the ASA score increased over the decades (p<0·0001).

INTERPRETATION

Despite increasing patient baseline risk, perioperative mortality has declined significantly over the past 50 years, with the greatest decline in developed countries. Global priority should be given to reducing total perioperative and anaesthetic-related mortality by evidence-based best practice in developing countries.

FUNDING

University of Western Ontario.

Mortality after surgery in Europe: a 7 day cohort study

BACKGROUND

Clinical outcomes after major surgery are poorly described at the national level. Evidence of heterogeneity between hospitals and health-care systems suggests potential to improve care for patients but this potential remains unconfirmed. The European Surgical Outcomes Study was an international study designed to assess outcomes after non-cardiac surgery in Europe.

METHODS

We did this 7 day cohort study between April 4 and April 11, 2011. We collected data describing consecutive patients aged 16 years and older undergoing inpatient non-cardiac surgery in 498 hospitals across 28 European nations. Patients were followed up for a maximum of 60 days. The primary endpoint was in-hospital mortality. Secondary outcome measures were duration of hospital stay and admission to critical care. We used χ(2) and Fisher's exact tests to compare categorical variables and the t test or the Mann-Whitney U test to compare continuous variables. Significance was set at p<0·05. We constructed multilevel logistic regression models to adjust for the differences in mortality rates between countries.

FINDINGS

We included 46,539 patients, of whom 1855 (4%) died before hospital discharge. 3599 (8%) patients were admitted to critical care after surgery with a median length of stay of 1·2 days (IQR 0·9-3·6). 1358 (73%) patients who died were not admitted to critical care at any stage after surgery. Crude mortality rates varied widely between countries (from 1·2% [95% CI 0·0-3·0] for Iceland to 21·5% [16·9-26·2] for Latvia). After adjustment for confounding variables, important differences remained between countries when compared with the UK, the country with the largest dataset (OR range from 0·44 [95% CI 0·19-1·05; p=0·06] for Finland to 6·92 [2·37-20·27; p=0·0004] for Poland).

INTERPRETATION

The mortality rate for patients undergoing inpatient non-cardiac surgery was higher than anticipated. Variations in mortality between countries suggest the need for national and international strategies to improve care for this group of patients.

FUNDING

European Society of Intensive Care Medicine, European Society of Anaesthesiology.

Progress and challenges in improving surgical outcomes1

A lot of effort still needed

Opportunities for cost reduction of medical care: part 3

The level of health care spending in the United States and other developed nations is rising at a disturbingly rapid rate. However, in the United States, these increases are not justified by superior performance. Rather, most other wealthy countries' inhabitants live longer and suffer from fewer medical problems than the average American. This paper demonstrates the continued abundance of opportunities for substantially reducing health care costs without decreasing the quality of care. In particular, it emphasizes the need to reduce the practice of defensive medicine and to enlarge the cadre of non-specialist physicians who educate future doctors. Such cost-saving opportunities are not rare phenomena but are widely available and offer the United States opportunities to move toward the markedly lower cost levels that have been achieved in other countries.

In-hospital mortality and failure to rescue after cytoreductive nephrectomy

BACKGROUND

The risk of in-hospital mortality after cytoreductive nephrectomy (CNT) is non-negligible and may vary widely according to various patient and hospital characteristics and clinical contexts.

OBJECTIVE

To better elucidate the mechanisms underlying variability in operative mortality after CNT.

DESIGN, SETTING, AND PATIENTS

Using the US-based Nationwide Inpatient Sample registry, a weighted estimate of 16 285 patients with metastatic renal cell carcinoma (mRCC) treated with CNT between 1998 and 2007 was made retrospectively.

OUTCOME MEASUREMENTS AND STATISTICAL ANALYSIS

Failure to rescue (FTR), defined as the number of deaths in patients who developed an adverse outcome during hospitalization. Univariable and multivariable logistic regression models were used.

RESULTS

Of all 16 285 mRCC patients who underwent a CNT, 31% had an occurrence of one complication or more. The overall FTR rate was 5% and differed significantly according to age (≥ 75 yr vs <75 yr: 7.9% vs 4.3%) and comorbidities (≥ 3 vs 0: 7.7% vs 4.8%), as well as hospital bed size (small vs large: 7.2% vs 5.3%, all p ≤ 0.03). Patients who had an occurrence of infections (19.3%), cardiac- (15.7%), respiratory- (11.4%), or vascular-related complications (16.5%) had significantly higher FTR rates. It is noteworthy that increasing hospital volume and number of hospital beds also corresponded to lower rates of FTR after adjusting for other covariates.

CONCLUSIONS

Following CNT for mRCC, the occurrence of infections, cardiac-, respiratory-, or vascular-related complications resulted in higher FTR rates. Hospitals with greater number of beds and higher annual hospital volume had lower FTR rates, confirming the concepts that support FTR as an indicator for better quality of care following a high-risk surgical procedure.

Risk of morbidity and mortality following hepato-pancreato-biliary surgery

INTRODUCTION

Hepatic, pancreatic, and complex biliary (HPB) surgery can be associated with major morbidity and significant mortality. For the past 5 years, the American College of Surgeons-National Surgical Quality Improvement Program (ACS-NSQIP) has gathered robust data on patients undergoing HPB surgery. We sought to use the ACS-NSQIP data to determine which preoperative variables were predictive of adverse outcomes in patients undergoing HPB surgery.

METHODS

Data collected from ACS-NSQIP on patients undergoing hepatic, pancreatic, or complex biliary surgery between 2005 and 2009 were analyzed (n = 13,558). Diagnoses and surgical procedures were categorized into 10 and eight groups, respectively. Seventeen preoperative clinical variables were assessed for prediction of 30-day postoperative morbidity and mortality. Multivariate logistic regression was utilized to develop a risk model.

RESULTS

Of the 13,558 patients who underwent an HPB procedure, 7,321 (54%) had pancreatic, 4,881 (36%) hepatic, and 1,356 (10%) biliary surgery. Overall, 70.3% of patients had a cancer diagnosis. Post-operative complications occurred in 3,850 patients for an overall morbidity of 28.4%. Serious complications occurred in 2,522 (18.6%) patients; 366 patients died for an overall peri-operative mortality of 2.7%. Peri-operative outcome was associated with diagnosis and type of procedure. Hepatic trisectionectomy (5.8%) and total pancreatectomy (5.4%) had the highest 30-day mortality. Of the preoperative variables examined, age >74, dyspnea with moderate exertion, steroid use, prior cardiac procedure, ascites, and pre-operative sepsis were associated with morbidity and mortality (all P < 0.05).

CONCLUSIONS

While overall morbidity and mortality for HPB surgery are low, peri-operative outcomes are heterogeneous and depend on diagnosis, procedure type, and key clinical factors. By combining these factors, an ACS-NSQIP "HPB Risk Calculator" may be developed in the future to help better risk-stratify patients being considered for complex HPB surgery.

An enhanced recovery pathway decreases duration of stay after esophagectomy

PURPOSE

Enhanced recovery pathways (ERP) decrease morbidity and duration of stay after colorectal surgery. There is little information about their role in complex procedures, such as esophagectomy. The purpose of this study was to determine the impact of an ERP on duration of stay, complications, and readmissions after esophagectomy.

METHODS

Patients undergoing esophagectomy for cancer or high-grade dysplasia from June 2009 to December 2011 were identified from a prospectively maintained database. Beginning in June 2010, all patients were enrolled in a 7-day multidisciplinary ERP including written patient education with daily treatment plan, indications for intensive care admission, early structured mobilization, and diet and drain management. Short-term (30-day) outcomes were compared for patients undergoing esophagectomy pre- and post-pathway. Data are expressed as median values [interquartile range].

RESULTS

We identified 106 patients; 47 underwent esophagectomy before ERP implementation and 59 after. Patients were similar with respect to age, gender, diagnosis, and operative time. Hospital stay was shorter in the ERP group (8 [7-17] vs 10 [9-17] days; P = .01). There were no differences in rates of complications (59% vs 62%) or readmissions (6% vs 5%).

CONCLUSION

Implementation of a multidisciplinary ERP for esophagectomy was associated with decreased duration of stay, without an increase in complications or readmissions.

[Hospital cooperation models. Safeguarding optimized patient care, medical training and resource utilization]

INTRODUCTION

In the face of continuous medical progress on the one hand and the increasing cost pressure through the diagnosis-related groups (DRG) system with concomitant hospital privatization on the other, pioneering and economical models for modern and competent patient care are required.

METHODS

The cooperation model of the surgical department of the Heidelberg University Hospital is based on patient selection according to the grade of disease complexity and has been successfully developed in Heidelberg since 2005. The long-term results on the basis of actual proceeds are presented.

RESULTS

Cooperation with the Salem Hospital chaired by the director of the University surgical department has been ongoing for 6 years. General visceral surgery cases with low complexity are treated at the secondary cooperation hospitals whereas complex oncological operations of the esophagus, liver, pancreas, rectum or multivisceral resections and transplantations are performed at the University hospital. Optimal utilization of the operative and infrastructural resources of both cooperation partners lead to an improvement in surgical training and proceeds. Likewise, another cooperation with the secondary hospital in Sinsheim, which started 2 years ago, has shown similar positive results. Clinical rotation for surgical residents and attending surgeons guarantee a complete and competent surgical training in the field of general surgery.

CONCLUSIONS

The long-term results indicate that the cooperation model functions to achieve an optimized treatment of patients and an economical win-win situation for all cooperation partners by differential utilization of the available resources in the hospital network.

The impact of pancreatic duct drainage following pancreaticojejunostomy on clinical outcome

BACKGROUND

The aim of this meta-analysis is to evaluate the effect of stenting the pancreatic duct during pancreaticojejunostomy formation on perioperative outcomes.

METHODS

Primary outcome measures were operative mortality and pancreatic fistula. Secondary outcomes were length of hospital stay, reoperation, delayed gastric emptying, estimated blood loss, and length of operation. Internal and external pancreatic stents were grouped together for the purposes of analysis.

RESULTS

Six trials were included in this analysis comprising 732 patients. Pancreatic stent placement had no significant effect on operative mortality; however, there was a non-significant trend towards reduced pancreatic fistula. Estimated blood loss, length of operation, and length of hospital stay were significantly increased in association with pancreatic stent placement. There were no significant effects on reoperation or delayed gastric emptying.

CONCLUSION

This analysis demonstrates a trend towards reduced pancreatic fistula with the use of pancreatic stents in pancreaticojejunostomy. However, there were insufficient data to confidently reject the null hypothesis that stenting has no beneficial effect. Further research is required to identify whether in certain subgroups, such as those with soft pancreatic texture and a non-dilated duct, stents may have a more important role in reducing fistula formation.

Stromal galectin-1 expression is associated with long-term survival in resectable pancreatic ductal adenocarcinoma

The overall 5 year survival rate for pancreatic ductal adenocarcinoma (i.e., PDAC) is a dismal 5%, although patients that have undergone surgical resection have a somewhat better survival rate of up to 20%. Very long-term survivors of PDAC (defined as patients with ≥ 10 year survival following apparently curative resection), on the other hand, are considerably less frequent. The molecular characteristics of very long-term survivors (VLTS) are poorly understood, but might provide novel insights into prognostication for this disease. In this study, a panel of five VLTS and stage-matched short-term survivors (STS, defined as disease-specific mortality within 14 months of resection) were identified, and quantitative proteomics was applied to comparatively profile tumor tissues from both cohorts. Differentially expressed proteins were identified in cancers from VLTS vs. STS patients. Specifically, the expression of galectin-1 was 2-fold lower in VLTS compared with STS tumors. Validation studies were performed by immunohistochemistry (IHC) in two additional cohorts of resected PDAC, including: 1) an independent cohort of VLTS and 2) a panel of sporadic PDAC with a considerable range of overall survival following surgery. Immunolabeling analysis confirmed that significantly lower expression of stromal galectin-1 was associated with VLTS (p = 0.02) and also correlated with longer survival in sporadic, surgically-treated PDAC cases (hazard ratio = 4.9, p = 0.002). The results from this study provide new insights to better understand the role of galectin-1 in PDAC survival, and might be useful for rendering prognostic information, and developing more effective therapeutic strategies aimed at improving survival.