Survey and Interview Findings of an Environmental Scan of Perioperative Geriatric Models of Care in Canada.

Background: Best practice recommendations support the implementation of perioperative geriatric care models that tailor to the specific needs of older adults undergoing surgery. The objective of this study was to describe the current proactive perioperative geriatric programs and pathways in Canadian hospitals. Methods: A survey of geriatricians, surgeons, and anesthesiologists practicing in Canada combined with phone interviews of a subset of participants were used to determine characteristics of perioperative geriatric pathways or programs including eligibility, team composition, and intervention elements. Results: Analysis of 132 survey respondents and 24 interviews showed 47% (40 out of 85) of hospitals described had elements of a perioperative geriatrics program and 20% had two or more elements. Eleven themes emerged including: how perioperative geriatric care programs built geriatric competencies in other health-care providers; geriatric assessment identified risks not captured in standard perioperative risk assessment; perceived value for patients and the health-care team; delirium prevention was addressed; most programs were reactive; most programs were informal; virtual care may be used to meet demand; successful implementation required system buy-in with collaboration across subspecialties; mechanisms to drive improvement were accountability and data evaluation; few clinicians with geriatric expertise; and other priorities limited program implementation. Conclusions: There were few hospitals in Canada with perioperative geriatric care models and even fewer with elements spanning the entire perioperative pathway. Strengths, weaknesses, opportunities, and threats to inform the implementation and sustainability of perioperative geriatric care in the Canadian context were identified in this national environmental scan.

Unscheduled general surgery has higher costs for older adults.

BACKGROUND: With health care costs increasing, the cost of caring for older adults is rising. Understanding the costs of surgical care for older adults is crucial in planning for health care services. We hypothesize that increasing age predicts increasing surgical inpatient costs. METHODS: We conducted a retrospective analysis of general surgical inpatient costs at 4 hospitals over 2 fiscal years. We assessed the cost and number of procedures by age, procedure, hospital, cost category and surgical urgency. Costs were compared between surgical risk profile, urgency and age. Cost differences of 10% or more were considered clinically important. RESULTS: We examined the surgical inpatient costs for 12 070 procedures, representing 84% of all admissions in the region. The average cost was $4351 for scheduled admissions and $4054 for unscheduled admissions. Only unscheduled admissions resulted in higher costs in older age groups, more than doubling in patients aged 80 years and older undergoing low- and moderate-risk unscheduled surgery. The higher costs for older adults was primarily because of higher postoperative costs. In addition, the screening of candidates for elective surgery may have resulted in preoperative medical optimization leading to decreased admission costs. CONCLUSION: Older adults requiring surgery incur increased costs only if admitted for emergency surgery. The cost increase associated with unscheduled admissions was primarily for increased postoperative costs. Innovative programs to reduce costs for postoperative care for older adults undergoing emergency surgery should be investigated.

Omicron, Long-COVID, and the Safety of Elective Surgery for Adults and Children: Joint Guidance from the Therapeutics and Guidelines Committee of the Surgical Infection Society and the Surgery Strategic Clinical Network, Alberta Health Services.

Background: Active and recent coronavirus disease 2019 (COVID-19) infections are associated with morbidity and mortality after surgery in adults. Current recommendations suggest delaying elective surgery in survivors for four to 12 weeks, depending on initial illness severity. Recently, the predominant causes of COVID-19 are the highly transmissible/less virulent Omicron variant/subvariants. Moreover, increased survivability of primary infections has engendered the long-COVID syndrome, with protean manifestations that may persist for months. Considering the more than 600,000,000 COVID-19 survivors, surgeons will likely be consulted by recovered patients seeking elective operations. Knowledge gaps of the aftermath of Omicron infections raise questions whether extant guidance for timing of surgery still applies to adults or should apply to the pediatric population. Methods: Scoping review of relevant English-language literature. Results: Most supporting data derive from early in the pandemic when the Alpha variant of severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) predominated. The Omicron variant/subvariants generally cause milder infections with less organ dysfunction; many infections are asymptomatic, especially in children. Data are scant with respect to adult surgical outcomes after Omicron infection, and especially so for pediatric surgical outcomes at any stage of the pandemic. Conclusions: Numerous knowledge gaps persist with respect to the disease, the recovered pre-operative patient, the nature of the proposed procedure, and supporting data. For example, should the waiting period for all but urgent elective surgery be extended beyond 12 weeks, e.g., after serious/critical illness, or for patients with long-COVID and organ dysfunction? Conversely, can the waiting periods for asymptomatic patients or vaccinated patients be shortened? How shall children be risk-stratified, considering the distinctiveness of pediatric COVID-19 and the paucity of data? Forthcoming guidelines will hopefully answer these questions but may require ongoing modifications based on additional new data and the epidemiology of emerging strains.

A Systematic Review and Meta-analysis Examining the Impact of Age on Perioperative Inflammatory Biomarkers.

BACKGROUND: Dysregulation of immune responses to surgical stress in older patients and those with frailty may manifest as differences in inflammatory biomarkers. We conducted a systematic review and meta-analysis to examine differences in perioperative inflammatory biomarkers between older and younger patients, and between patients with and without frailty. METHODS: MEDLINE, Embase, Cochrane, and CINAHL databases were searched (Inception to June 23, 2020). Observational or experimental studies reporting the perioperative level or activity of biomarkers in surgical patients stratified by age or frailty status were included. The primary outcome was inflammatory biomarkers (grouped by window of ascertainment: pre-op; post-op: <12 hours, 12-24 hours, 1-3 days, 3 days to 1 week, and >1 week). Quality assessment was conducted using the Newcastle-Ottawa Scale. Inverse-variance, random-effects meta-analysis was conducted. RESULTS: Forty-five studies (4263 patients) were included in the review, of which 36 were pooled for meta-analysis (28 noncardiac and 8 cardiac studies). Two studies investigated frailty as the exposure, while the remaining investigated age. In noncardiac studies, older patients had higher preoperative levels of interleukin (IL)-6 and C-reactive protein (CRP), lower preoperative levels of lymphocytes, and higher postoperative levels of IL-6 (<12 hours) and CRP (12-24 hours) than younger patients. In cardiac studies, older patients had higher preoperative levels of IL-6 and CRP and higher postoperative levels of IL-6 (<12 hours and >1 week). CONCLUSIONS: Our findings demonstrate a paucity of frailty-specific studies; however, the presence of age-associated differences in the perioperative inflammatory response is consistent with age-associated states of chronic systemic inflammation and immunosenescence. Additional studies assessing frailty-specific changes in the systemic biologic response to surgery may inform the development of targeted interventions.

Depletion of essential fatty acids in muscle is associated with shorter survival of cancer patients undergoing surgery-preliminary report.

Emerging studies are reporting associations between skeletal muscle abnormalities and survival in cancer patients. Cancer prognosis is associated with depletion of essential fatty acids in erythrocytes and plasma in humans. However the relationship between skeletal muscle membrane fatty acid composition and survival is unknown. This study investigates the relationship between fatty acid content of phospholipids in skeletal muscle and survival in cancer patients. Rectus abdominis biopsies were collected during cancer surgery from 35 patients diagnosed with cancer. Thin-layer and gas chromatography were used for quantification of phospholipid fatty acids. Cutpoints for survival were defined using optimal stratification. Median survival was between 450 and 500 days when patients had arachidonic acid (AA) eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) in muscle phospholipid below the cut-point compared to 720-800 days for patients above. Cox regression analysis revealed that low amounts of AA, EPA and DHA are risk factors for death. The risk of death remained significant for AA [HR 3.5 (1.11-10.87), p = 0.03], EPA [HR 3.92 (1.1-14.0), p = 0.04] and DHA [HR 4.08 (1.1-14.6), p = 0.03] when adjusted for sex. Lower amounts of essential fatty acids in skeletal muscle membrane is a predictor of survival in cancer patients. These results warrant investigation to restore bioactive fatty acids in people with cancer.

The Relationship Between Visceral Obesity and Post-operative Complications: A Meta-Analysis.

BACKGROUND: Body composition can have important influence on surgical outcome. There is substantial literature examining sarcopenia, however much less in known about the impact of fat. Visceral fat area (VFA) is a reliable measures of fat distribution that can be quantified with CT scan. The aim of this study is to determine the impact of VFA to predict complications and mortality after emergent or elective surgery. MATERIALS AND METHODS: A systematic review and meta-analysis was performed in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analysis guidelines. The primary objective was to determine impact of VFA, quantified by preoperative CT scan, has on in-hospital complications and 30-day mortality after emergent or elective surgery. We included peer review English studies of adult patients who underwent elective or emergency surgery and had VFA quantified on preoperative CT scan. Obstetrical patients, case studies, and case series were excluded. RESULTS: Our search strategy identified 3782 citations. After removal of duplicates, application of inclusion criteria and full text review, 19 studies were included. Methodological quality of all studies was fair to good as assessed by Newcastle-Ottawa Scale. There were no significant differences between patients with visceral obesity compared to normal VFA for 30-day mortality or overall postoperative complications. Our analysis did demonstrated an association between visceral obesity and increased surgical site infection, pneumonia, and postoperative pancreatic fistula. CONCLUSIONS: Our findings suggest further studies are necessary to determine the impact of VFA on postoperative outcomes and identifies the importance of establishing standardized assessment for body composition on CT.

Patient reported outcomes in an elder-friendly surgical environment: Prospective, controlled before-after study.

INTRODUCTION: The Acute Care for the Elderly (ACE) model has demonstrated clinical benefit, but there is little evidence regarding quality of life after discharge. The Elder-friendly Approaches to the Surgical Environment (EASE) study was conducted to assess implementation of an ACE unit on an acute surgical service. Improved clinical and economic outcomes have been demonstrated, but post-discharge patient reported outcomes have not yet been reported. METHODS: Prospective, concurrently controlled, before-after study at two tertiary care hospitals in Alberta, Canada. The SF-12, EQ-5D, Canadian Malnutrition Screening Tool (CMST) and patient satisfaction were collected from elderly (≥ 65 years old) patients, 6 weeks and 6 months after discharge from an acute care surgical service. A difference-in-difference (DID) method was used to analyze between-site effects. RESULTS: At six weeks, patient satisfaction was high at 68%-86%, with significant improvement Pre-to Post-EASE at the control site (p < 0.001), but not the intervention site (p = 0.06). For the intervention site, within-site adjusted pre-post effects were nonsignificant for all patient reported outcomes [EQ-Index Score ß coefficient (SE): 0.042 (0.022); EQ-Visual Analog Scale: 0.10 (2.14); SF-12 Physical Component Score: -0.57 (0.84); SF-12 Mental Component Score: 1.17 (0.84); CMST Score: -0.39 (0.34)]. DID analyses were also non significant for all outcomes except for SF-12 Mental Component Score (p < 0.001). CONCLUSION: The clinically and economically beneficial EASE interventions do not appear to compromise quality of life, risk for malnutrition, or patient satisfaction in the post-discharge period. Further research with larger sample size is needed with comparisons to pre-intervention and the early post-discharge period.

The impact of delayed mobilization on post-discharge outcomes after emergency abdominal surgery: A prospective cohort study in older patients.

Surgeons are increasingly treating seniors with complex care needs who are at high-risk of readmission and functional decline. Yet, the prognostic importance of post-operative mobilization in older surgical patients is under-investigated and remains unclear. Thus, we evaluated the relationship between post-operative mobilization and events after hospital discharge in older people. Overall, 306 survivors of emergency abdominal surgery aged ≥65y who required help with <3 activities of daily living were prospectively followed at two Canadian tertiary-care hospitals. Time until mobilization after surgery was attained from hospital charts and a priori defined as 'delayed' (≥36h) or 'early' (<36h). Primary outcomes for 30-day and 6-month all-cause readmission/death after discharge were assessed in multivariable logistic regression. Patients had a mean age of 76 ± 7.7 years, 45% were women, 41% were 'vulnerable-to-moderately-frail', according to the Clinical Frailty Scale. Most common reasons for admission were gallstones (23%), intestinal obstructions (21%), and hernia (17%). Median time to post-operative mobilization was 19h (interquartile range 9-35); 74 (24%) patients had delayed mobilization. Delayed mobilization was independently associated with higher risk of 30-day readmission/death (19 [26%] vs. 22 [10%], P<0.001; adjusted odds ratio [aOR] 2.24, 95%CI 0.99-5.06, P = 0.05), but this was not statistically significant at 6-months (38 [51%] vs. 64 [28%], P<0.001; aOR 1.72, 95%CI 0.91-3.25, P = 0.1). One-quarter of older surgical patients stayed in bed for 1.5 days post-operatively. Delayed mobilization was associated with increased risk of short-term readmission/death. As older, more frail patients undergo surgery, mobilization of older surgical patients remains an understudied post-operative factor. Trial registration: clinicaltrials.gov identifier: NCT02233153.

Thigh Ultrasound Used to Identify Frail Elderly Patients with Sarcopenia Undergoing Surgery: A Pilot Study.

BACKGROUND: Computed tomography (CT) scan quantifying skeletal muscle mass is the gold standard tool to identify sarcopenia. Unfortunately, high cost, limited availability, and radiation exposure limit its use. We suggest that ultrasound of the thigh muscle could be an objective, reproducible, portable, and risk-free tool, used as a surrogate to a CT scan, to help identify frail patients with sarcopenia. MATERIALS AND METHODS: We included 49 patients over 64 y old, referred to the acute care surgery service. An ultrasound of thigh muscle thickness was standardized to patient thigh length (U/Swhole/L). CT skeletal muscle index (SMI) was calculated using skeletal muscle surface area of the L3 region divided by height2. Frailty status was assessed using the Canadian Study of Healthy Aging Clinical Frailty Scale. RESULTS: The mean (SD) age was 76 (8) y, and 34% (n = 17) were men. CT-defined sarcopenia was identified in 65% (n = 11) of men and 75% (n = 24) of women. In general, women had longer stay in hospital than men (mean + SD 14 ± 9 versus 7 ± 3 d, P = 0.003). There was a significant positive correlation between thigh U/Swhole/L and CT SMI. There was an inverse correlation between thigh U/Swhole/L and frailty score; a similar relationship was observed between CT SMI and frailty. There was an association between U/Swhole/L and postoperative major complications. CONCLUSIONS: This prospective observational study illustrates that the U/Swhole/L index can be used as a surrogate to CT scan, whereby it can identify elderly frail patients with sarcopenia. Thigh ultrasound should be further tested as an objective tool to assess for stratifying frailty.

Cost-effectiveness Analysis of the Elder-Friendly Approaches to the Surgical Environment (EASE) Intervention for Emergency Abdominal Surgical Care of Adults Aged 65 Years and Older.

Importance: The Elder-Friendly Approaches to the Surgical Environment (EASE) initiative is a novel approach to acute surgical care for elderly patients. Objective: To determine the cost-effectiveness of EASE. Design, Setting, and Participants: An economic evaluation from the perspective of the health care system was conducted as part of the controlled before-and-after EASE study at 2 tertiary care centers, the University of Alberta Hospital and Foothills Medical Centre. Participants included elderly adults (aged ≥65 years) admitted for emergency abdominal surgery between 2014 and 2017. Data were analyzed from April 2018 to February 2019. Main Outcomes and Measures: Data were captured at both control and intervention sites before and after implementation of the EASE intervention. Resource use was captured over 6 months of follow-up and was converted to costs. Utility was measured with the EuroQol Five-Dimensions Three-Levels instrument at 6 weeks and 6 months of follow-up. The differences-in-differences method was used to estimate the association of the intervention with cost and quality-adjusted life-years. For a subset of participants, self-reported out-of-pocket health care costs were collected using the Resource Use Inventory at 6 months. Results: A total of 675 participants were included (mean [SD] age, 75.3 [7.9] years; 333 women [49.3%]), 289 in the intervention group and 386 in the control group. The mean (SD) cost per control participant was $36 995 ($44 169) before EASE and $35 032 ($43 611) after EASE (all costs are shown in 2018 Canadian dollars). The mean (SD) cost per intervention participant was $56 143 ($74 039) before EASE and $39 001 ($59 854) after EASE. Controlling for age, sex, and Clinical Frailty Score, the EASE intervention was associated with a mean (SE) cost reduction of 23.5% (12.5%) (P = .02). The change in quality-adjusted life-years observed associated with the intervention was not statistically significant (mean [SE], 0.00001 [0.0001] quality-adjusted life-year; P = .72). The Resource Use Inventory was collected for 331 participants. The mean (SE) odds ratio for having 0 out-of-pocket expenses because of the intervention, compared with having expenses greater than 0, was 15.77 (3.37) (P = .02). Among participants with Resource Use Inventory costs greater than 0, EASE was not associated with a change in spending (mean [SE] reduction associated with EASE, 19.1% [45.2%]; P = .57). Conclusions and Relevance: This study suggests that the EASE intervention was associated with a reduction in costs and no change in quality-adjusted life-years. In locations that lack capacity to implement this intervention, costs to increase capacity should be weighed against the estimated costs avoided.

Clinical Effectiveness of the Elder-Friendly Approaches to the Surgical Environment Initiative in Emergency General Surgery.

Importance: Older adults, especially those with frailty, have a higher risk for complications and death after emergency surgery. Acute Care for the Elderly models have been successful in medical wards, but little evidence is available for patients in surgical wards. Objectives: To develop and assess the effect of an Elder-Friendly Approaches to the Surgical Environment (EASE) model in an emergency surgical setting. Design, Setting, and Participants: This prospective, nonrandomized, controlled before-and-after study included patients 65 years or older who presented to the emergency general surgery service of 2 tertiary care hospitals in Alberta, Canada. Transfers from other medical services, patients undergoing elective surgery or with trauma, and nursing home residents were excluded. Of 6795 patients screened, a total of 684 (544 in the nonintervention group and 140 in the intervention group) were included. Data were collected from April 14, 2014, to March 28, 2017, and analyzed from November 16, 2018, through May 30, 2019. Interventions: Integration of a geriatric assessment team, optimization of evidence-based elder-friendly practices, promotion of patient-oriented rehabilitation, and early discharge planning. Main Outcomes and Measures: Proportion of participants experiencing a major complication or death (composite) in the hospital, Comprehensive Complication Index, length of hospital stay, and proportion of participants who required an alternative level of care on discharge. Covariate-adjusted, within-site change scores were computed, and the overall between-site, preintervention-postintervention difference-in-differences (DID) were analyzed. Results: A total of 684 patients were included in the analysis (mean [SD] age, 76.0 [7.6] years; 327 women [47.8%] and 357 men [52.2%]), of whom 139 (20.3%) were frail. At the intervention site, in-hospital major complications or death decreased by 19% (51 of 153 [33.3%] vs 19 of 140 [13.6%]; P < .001; DID P = .06), and mean (SE) Comprehensive Complication Index decreased by 12.2 (2.5) points (P < .001; DID P < .001). Median length of stay decreased by 3 days (10 [interquartile range (IQR), 6-17] days to 7 [IQR, 5-14] days; P = .001; DID P = .61), and fewer patients required an alternative level of care at discharge (61 of 153 [39.9%] vs 29 of 140 [20.7%]; P < .001; DID P = .11). Conclusions and Relevance: To our knowledge, this is the first study to examine clinical outcomes associated with a novel elder-friendly surgical care delivery redesign. The findings suggest the clinical effectiveness of such an approach by reducing major complications or death, decreasing hospital stays, and returning patients to their home residence. Trial Registration: ClinicalTrials.gov Identifier: NCT02233153.

Lipid is heterogeneously distributed in muscle and associates with low radiodensity in cancer patients.

BACKGROUND: Low muscle radiodensity is associated with mortality in a variety of cancer types. Biochemical and morphological correlates are unknown. We aimed to evaluate triglyceride (TG) content and location as a function of computed tomography (CT)-derived measures of skeletal muscle radiodensity in cancer patients. METHODS: Rectus abdominis (RA) biopsies were collected during cancer surgery from 75 patients diagnosed with cancer. Thin-layer chromatography and gas chromatography were used for quantification of TG content of the muscle. Axial CT images of lumbar vertebra were used to measure muscle radiodensity. Oil Red O staining was used to determine the location of neutral lipids in frozen muscle sections. RESULTS: There was wide variation in RA radiodensity in repeated measures (CV% ranged from 3 to 55% based on 10 serial images) as well as within one slice (CV% ranged from 6 to 61% based on 10 subregions). RA radiodensity and total lumbar muscle radiodensity were inversely associated with TG content of RA (r = -0.396, P < 0.001, and r = -0.355, P = 0.002, respectively). Of the total percentage area of muscle staining positive for neutral lipid, 54 ± 17% was present as extramyocellular lipids (range 23.5-77.8%) and 46 ± 17% (range 22.2-76.5%) present as intramyocellular lipid droplets. CONCLUSIONS: Repeated measures revealed wide variation in radiodensity of RA muscle, both vertically and horizontally. Low muscle radiodensity reflects high level of TG in patients with cancer. Non-uniform distribution of intramyocellular and extramyocellular lipids was evident using light microscopy. These results warrant investigation of mechanisms resulting in lipid deposition in muscles of cancer patients.

Sex differences in the treatment and outcome of emergency general surgery.

BACKGROUND: Sociodemographic characteristics, such as sex, have been shown to influence health care delivery. Acute care surgery models are effective in decreasing mortality and morbidity after emergency surgeries, but sex-based differences in delivery and outcomes have not been explored. Our objective was to explore sex associated differences in the patient characteristics and clinical outcomes of those admitted to emergency general surgery. METHODS: A post-hoc analysis of 512 emergency general surgical patients admitted consecutively to two tertiary care hospitals in Alberta Canada, between April 1, 2014 and July 31, 2015. We measured associations between sex and patient demographics, pre-, intra- and post-operative delivery of care, as well as post-operative outcomes. FINDINGS: Of those excluded from the analysis, older females were more likely to undergo conservative management compared to older men (41% vs 34%, p = 0.03). Overall, there were no differences between sexes for time from admission to surgery, time spent in surgery, overall complication rate, mortality, hospital length of stay, or discharge disposition. Women were more likely to have a cancer diagnosis [OR 4.12 (95% CI: 1.61-10.5), p = 0.003, adjusted for age], while men were more likely to receive hernia surgery [OR 2.33 (95% CI 1.35-4.02), p = 0.002, adjusted for age and Charlson Comorbidity Index]. Finally, men were more likely to have a major respiratory complication [OR 2.73 (95% CI: 1.19-6.24), p = 0.02, adjusted for age]. CONCLUSIONS: Only two differences in peri and post-operative complications between sexes were noted, which suggests sex-based disparity in quality of care is limited once a decision has been made to operate. Future studies with larger databases are needed to corroborate our findings and investigate potential sex biases in surgical versus conservative management.

Clinical and biological characterization of skeletal muscle tissue biopsies of surgical cancer patients.

BACKGROUND: Researchers increasingly use intraoperative muscle biopsy to investigate mechanisms of skeletal muscle atrophy in patients with cancer. Muscles have been assessed for morphological, cellular, and biochemical features. The aim of this study was to conduct a state-of-the-science review of this literature and, secondly, to evaluate clinical and biological variation in biopsies of rectus abdominis (RA) muscle from a cohort of patients with malignancies. METHODS: Literature was searched for reports on muscle biopsies from patients with a cancer diagnosis. Quality of reports and risk of bias were assessed. Data abstracted included patient characteristics and diagnoses, sample size, tissue collection and biobanking procedures, and results. A cohort of cancer patients (n = 190, 88% gastrointestinal malignancies), who underwent open abdominal surgery as part of their clinical care, consented to RA biopsy from the site of incision. Computed tomography (CT) scans were used to quantify total abdominal muscle and RA cross-sectional areas and radiodensity. Biopsies were assessed for muscle fibre area (µm2 ), fibre types, myosin heavy chain isoforms, and expression of genes selected for their involvement in catabolic pathways of muscle. RESULTS: Muscle biopsy occurred in 59 studies (total N = 1585 participants). RA was biopsied intraoperatively in 40 studies (67%), followed by quadriceps (26%; percutaneous biopsy) and other muscles (7%). Cancer site and stage, % of male participants, and age were highly variable between studies. Details regarding patient medical history and biopsy procedures were frequently absent. Lack of description of the population(s) sampled and low sample size contributed to low quality and risk of bias. Weight-losing cases were compared with weight stable cancer or healthy controls without considering a measure of muscle mass in 21 out of 44 studies. In the cohort of patients providing biopsy for this study, 78% of patients had preoperative CT scans and a high proportion (64%) met published criteria for sarcopenia. Fibre type distribution in RA was type I (46% ± 13), hybrid type I/IIA (1% ± 1), type IIA (36% ± 10), hybrid type IIA/D (15% ± 14), and type IID (2% ± 5). Sexual dimorphism was prominent in RA CT cross-sectional area, mean fibre cross-sectional area, and in expression of genes associated with muscle growth, apoptosis, and inflammation (P < 0.05). Medical history revealed multiple co-morbid conditions and medications. CONCLUSIONS: Continued collaboration between researchers and cancer surgeons enables a more complete understanding of mechanisms of cancer-associated muscle atrophy. Standardization of biobanking practices, tissue manipulation, patient characterization, and classification will enhance the consistency, reliability, and comparability of future studies.

Frailty predicts increased costs in emergent general surgery patients: A prospective cohort cost analysis.

BACKGROUND: Aging populations have led to increasing numbers of seniors presenting for emergency surgery. Older patients are at a higher risk of postoperative complications, prolonged hospitalization, and increased institutionalization. We hypothesized that increased frailty would be a risk factor for increased health care costs in elderly surgical patients who have undergone emergency abdominal surgery. METHODS: A prospective cost analysis of emergency general surgery patients 65 years of age and older was conducted. Demographic and clinical characteristics were obtained. Preadmission Clinical Frailty Scale score and Clavien-Dindo postoperative complications were collected. Patients were followed for 6 months after discharge. Hospitalization costs were calculated using the Alberta Health Services (AHS) microcosting database; other costs were obtained from Alberta Health Services and Alberta Health databases. The primary outcome was total insured cost (2016 Can$). Multivariate generalized linear regression of log-transformed costs was conducted. RESULTS: Overall, 321 patients were enrolled. Mean age was 76.1 years (standard deviation 7.8), median Clinical Frailty Scale was 3, mean length of stay was 15.9 days (standard deviation 23.4), and 48% suffered a complication. Median total insured cost was Can$18,021 and median total cost was Can$26,739. Multivariate analysis found American Society of Anesthesiologists score (adjusted ratio [AR] = 1.24, P = .001), CFS (AR = 1.27, P < .001), major complications (AR = 2.11, P < .001), and minor complications (AR = 1.48, P < .001) lead to increased total insured costs. CONCLUSION: Costs increased-after adjusting for age, comorbidities, and preadmission function as frailty-and American Society of Anesthesiologists score increased if minor or major complications occurred. The detection of frailty represents an opportunity to target risk-reduction strategies and interventions to improve outcomes and decrease cost.

Incidence and predictors of postoperative delirium in the older acute care surgery population: a prospective study

Background: Among older inpatients, the highest incidence of delirium is within the surgical population. Limited data are available regarding postoperative delirium risk in the acute care surgical population. The purpose of our study was to establish the incidence of and risk factors for delirium in an older acute care surgery population. Methods: Patients aged 65 years or more who had undergone acute care surgery between April 2014 and September 2015 at 2 university-affiliated hospitals in Alberta were followed prospectively and screened for delirium by means of a validated chart review method. Delirium duration was recorded. We used separate multivariable logistic regression models to identify independent predictors for overall delirium and longer episodes of delirium (duration ≥ 48 h). Results: Of the 322 patients included, 73 (22.7%) were identified as having experienced delirium, with 49 (15.2%) experiencing longer episodes of delirium. Postoperative delirium risk factors included Foley catheter use, intestinal surgery, gallbladder surgery, appendix surgery, intensive care unit (ICU) admission and mild to moderate frailty. Risk factors for prolonged postoperative delirium included Foley catheter use and mild to moderate frailty. Surgical approach (open v. laparoscopic) and overall operative time were not found to be significant. Conclusion: In keeping with the literature, our study identified Foley catheter use, frailty and ICU admission as risk factors for delirium in older acute care surgical patients. We also identified an association between delirium risk and the specific surgical procedure performed. Understanding these risk factors can assist in prevention and directed interventions for this high-risk population.

Contexte: Parmi les patients âgés, l'incidence la plus élevée d'épisodes de délire s'observe chez les patients opérés. On dispose de données limitées au sujet du risque de délire postopératoire chez les patients soumis à une chirurgie d'urgence. Le but de notre étude était de connaître l'incidence des épisodes de délire et les facteurs de risque chez la population âgée soumise à une chirurgie d'urgence. Méthodes: Nous avons suivi de façon prospective les patients de 65 ans ou plus soumis à une chirurgie d'urgence entre avril 2014 et septembre 2015 dans 2 centres hospitaliers universitaires de l'Alberta et nous avons recensé les épisodes de délire au moyen d'une méthode validée d'analyse des dossiers. La durée des épisodes de délire a été notée. Nous avons utilisé des modèles séparés d'analyse de régression logistique multivariée pour dégager les prédicteurs indépendants des épisodes globaux de délire et des épisodes plus longs (durée ≥ 48 h). Résultats: Parmi les 322 patients inclus, 73 (22,7 %) ont manifesté un épisode de délire, dont 49 (15,2 %) un épisode plus long. Les facteurs de risque à l'égard des épisodes de délire postopératoire ont inclus : l'emploi d'une sonde Foley, la chirurgie intestinale, la chirurgie de la vésicule biliaire, l'appendicectomie, un séjour à l'unité de soins intensifs (USI) et un état de fragilité léger ou modéré. Les facteurs de risque à l'égard d'un épisode de délire postopératoire prolongé ont inclus : l'emploi d'une sonde Foley et un état de fragilité léger ou modéré. L'approche chirurgicale (ouverte c. laparoscopique) et la durée globale de l'intervention n'ont pas joué un rôle significatif. Conclusion: Faisant écho à la littérature publiée, notre étude a identifié l'emploi de la sonde Foley, l'état de fragilité et le séjour à l'USI comme des facteurs de risque de délire chez les patients âgés soumis à une chirurgie d'urgence. Nous avons aussi observé un lien entre le risque de délire et certains types d'interventions chirurgicales. En comprenant mieux ces facteurs, il sera possible de prévenir ces épisodes et d'orienter les interventions chez cette population à risque élevé.

Development of a reconditioning program for elderly abdominal surgery patients: the Elder-friendly Approaches to the Surgical Environment-BEdside reconditioning for Functional ImprovemenTs (EASE-BE FIT) pilot study.

Background: Elderly individuals who are hospitalized due to emergency abdominal surgery spend over 80% of their recovery time in bed, resulting in early and rapid muscle loss. As these elderly individuals have a lower physiological reserve, the impact of muscle wasting on function may be profound. The objectives of this study are to (1) create an independently led post-surgical reconditioning program and (2) pilot its implementation, while assessing the feasibility and safety of the program. Methods: The BE FIT program was generated with hospital rehabilitation staff to target lower limb strength, balance, and endurance. This pilot study was assessed using a sequential before and after trial, with a cohort of patients aged ≥ 65 years enrolled in the Elder-friendly Approaches to the Surgical Environment (EASE) study. Change in 30-s sit-to-stand performance between postoperative day 2 and discharge was compared between Usual Care pre- and post-BE FIT participants. Results: A total of 66 patients participated in the sub-study, 33 Usual Care and 33 BE FIT. Mean (SD) age was 76.2 (8.78); 44 (67%) were female, with 11 (17%) reporting mild/moderate frailty on the CHSA Clinical Frailty Scale. BE FIT participants had a median of three rehab days and self-reported completing an average of 83% of the exercises. The adjusted between group difference showed that the BE FIT patients were able to complete more stands than the Usual Care (1.9 stands (0.94), p = 0.05). There were no reported adverse events. Conclusion: The reconditioning program was shown to be safe and feasible within the hospital setting for the elderly emergency abdominal surgery patients. More rigorous assessment is needed to confirm this effectiveness and to better assess patient adherence to self-directed exercise. Trial registration: Registration #NCT02233153 through ClinicalTrials.gov. Registered September 8, 2014.

Review of risk assessment tools to predict morbidity and mortality in elderly surgical patients.

BACKGROUND: Informed surgical consent requires accurate estimation of risks and benefits. Multiple risk assessment tools are available; however, most are not widely used or are specific to certain interventions. Assessing surgical risk is especially challenging in elderly patients because of their range of comorbidities, level of frailty, or severity of illness and a number of available surgical interventions. DATA SOURCES: We searched MEDLINE from January 2014 to July 2017 for studies that used risk assessment tools in studies on elderly surgical patients. We then sought the original articles describing each assessment tool and subsequent validation studies. CONCLUSIONS: We identified risk assessment tools that can improve surgical risk assessment in elderly surgical patients. The majority of the identified tools are not commonly used for pre-operative risk assessment. NSQIP-PMP, mFI and SURPAS are promising tools. Age is commonly used to predict risk, but frailty may be a more appropriate measure.

Impact of frailty on outcomes after discharge in older surgical patients: a prospective cohort study.

BACKGROUND: Frailty is a state of vulnerability to diverse stressors. We assessed the impact of frailty on outcomes after discharge in older surgical patients. METHODS: We prospectively followed patients 65 years of age or older who underwent emergency abdominal surgery at either of 2 tertiary care centres and who needed assistance with fewer than 3 activities of daily living. Preadmission frailty was defined according to the Canadian Study of Health and Aging Clinical Frailty Scale as "well" (score 1 or 2), "vulnerable" (score 3 or 4) or "frail" (score 5 or 6). We assessed composite end points of 30-day and 6-month all-cause readmission or death by multivariable logistic regression. RESULTS: Of 308 patients (median age 75 [range 65-94] yr, median Clinical Frailty Score 3 [range 1-6]), 168 (54.5%) were classified as vulnerable and 68 (22.1%) as frail. Ten (4.2%) of those classified as vulnerable or frail received a geriatric consultation. At 30 days after discharge, the proportions of patients who were readmitted or had died were greater among vulnerable patients (n = 27 [16.1%]; adjusted odds ratio [OR] 4.60, 95% confidence interval [CI] 1.29-16.45) and frail patients (n = 12 [17.6%]; adjusted OR 4.51, 95% CI 1.13-17.94) than among patients who were well (n = 3 [4.2%]). By 6 months, the degree of frailty independently and dose-dependently predicted readmission or death: 56 (33.3%) of the vulnerable patients (adjusted OR 2.15, 95% CI 1.01-4.55) and 37 (54.4%) of the frail patients (adjusted OR 3.27, 95% CI 1.32-8.12) were readmitted or had died, compared with 11 (15.3%) of the patients who were well. INTERPRETATION: Vulnerability and frailty were prevalent in older patients undergoing surgery and unlikely to trigger specialized geriatric assessment, yet remained independently associated with greater risk of readmission for as long as 6 months after discharge. Therefore, the degree of frailty has important prognostic value for readmission. TRIAL REGISTRATION FOR PRIMARY STUDY: ClinicalTrials.gov, no. NCT02233153.