1
|
Zhang N, Zhang D, Ren S, Gao Y, Sun W, Yang S. Relationship between preoperative hemoglobin levels and length of stay in elderly patients with hip fractures: A retrospective cohort study. Medicine (Baltimore) 2024; 103:e38518. [PMID: 38905374 PMCID: PMC11191984 DOI: 10.1097/md.0000000000038518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2024] [Accepted: 05/17/2024] [Indexed: 06/23/2024] Open
Abstract
Globally, hip fractures in elderly individuals are a prevalent and serious issue. Patients typically have a longer length of stay (LOS), which increases the risk of complications and increases hospitalization costs. Hemoglobin (Hb) is a routine blood test that is associated with disease prognosis. This study aimed to investigate the relationship between preoperative Hb and LOS in elderly hip fracture patients and to determine a reliable transfusion threshold. The clinical data of hip fracture patients (aged ≥ 60 years) admitted to the Department of Orthopaedics, Shenzhen Second People's Hospital, between January 2012 and December 2021 were retrospectively analyzed. Multiple linear regression analysis was used to assess the linear relationship between preoperative Hb and LOS. Smooth curve fitting was performed to investigate potential nonlinear relationships. In the case of discovering nonlinear relationships, a weighted two-piecewise linear regression model was built, and the inflection points were determined using a recursive algorithm. Subgroup analyses were conducted based on age and gender. A total of 1444 patients with an average age of (77.54 ± 8.73) years were enrolled. After adjusting for covariates, a nonlinear relationship was found between preoperative Hb and LOS. The two-piecewise linear regression model revealed an inflection point of 10 g/dL. On the left of the inflection point (Hb < 10 g/dL), the LOS was reduced by 0.735 days for every 1 g/dL increase in Hb (β = -0.735, 95% confidence interval: -1.346 to -0.124, P = .019). On the right side of the inflection point (Hb > 10 g/dL), the relationship was not statistically significant (β = 0.001, 95% confidence interval: -0.293 to 0.296, P = .992). In elderly hip fracture patients, there is a nonlinear association between preoperative Hb and LOS. However, when Hb levels were <10 g/dL, there was a negative correlation with the LOS. No correlation was observed when Hb levels were >10 g/dL. These findings underscore the importance of timely intervention to manage Hb levels in elderly patients with hip fractures, potentially reducing hospitalization durations and associated complications.
Collapse
Affiliation(s)
- Ning Zhang
- School of Nursing, Anhui Medical University, Hefei, China
| | - Daxue Zhang
- School of Nursing, Anhui Medical University, Hefei, China
| | - Shuqun Ren
- Guangxi University of Chinese Medicine, Nanning, China
| | - Yan Gao
- Department of Rehabilitation Medicine, Shenzhen Second People’s Hospital, Shenzhen, China
| | - Weichao Sun
- Department of Bone and Joint Surgery, Shenzhen Second People’s Hospital, Shenzhen, China
| | - Shiwei Yang
- School of Nursing, Anhui Medical University, Hefei, China
- Teaching Office, Shenzhen Second People’s Hospital, Shenzhen, China
| |
Collapse
|
2
|
Wang LX, Guan LJ, Deng MH, Zhou LH. Risk Factors of Serious Adverse Events for Geriatric Hip Fractures: Is it the Frailty or the Timing? Geriatr Orthop Surg Rehabil 2024; 15:21514593241250165. [PMID: 38681064 PMCID: PMC11047255 DOI: 10.1177/21514593241250165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 03/13/2024] [Accepted: 04/02/2024] [Indexed: 05/01/2024] Open
Abstract
Objective Preoperative frailty and surgical waiting times are associated with the occurrence of adverse outcomes in patients with hip fractures. Specifically, we aimed to investigate the influence of frailty status and surgical timing on the risk of serious adverse events during hospitalization. Methods This study utilized an observational single cohort design and included patients aged ≥60 years with a primary diagnosis of hip fracture. Frailty was assessed using the chart-derived frailty index (CFI), which was calculated based on demographic and routine laboratory variables. The primary outcome of interest was the occurrence of in-hospital serious adverse events. A multivariate logistic regression model was utilized to examine the risk factors influencing outcomes. Results The study included 427 participants, with a mean age of 80.28 ± 8.13 years and 64.2% of whom were female. Patients with high CFI have more comorbidities (P < .001), lower surgical rates (P = .002), and delayed surgical times (P = .033). A total of 239 patients (56.0%) experienced serious adverse events. The high CFI group had a significantly higher occurrence of serious adverse events compared to the low CFI group (73.4% vs 48.5%, P < .001). After adjusting for surgical timing and covariates, the multivariate logistic regression analysis revealed that high frailty significantly increased the risk for serious adverse events (OR = 2.47, 95% CI 1.398-4.412), infection (OR = 1.99, 95% CI 1.146-3.446), acute heart failure (OR = 3.37, 95% CI 1.607-7.045). However, the timing of surgery did not demonstrate any association with these outcomes. In addition, after adjusting for surgical factors, high CFI remains an independent risk factor for these complications. Conclusions Frailty serves as a reliable predictor of the probability of encountering severe adverse events while hospitalized for elderly individuals with hip fractures. This method has the potential to pinpoint particular modifiable factors that necessitate intervention, whereas the impact of surgical timing remains uncertain and necessitates additional research.
Collapse
Affiliation(s)
- Ling-xiao Wang
- Department of gerontology and geriatrics, Chengdu Fifth People’s Hospital (The Second Clinical Medical College, Affiliated Fifth People’s Hospital of Chengdu University of Traditional Chinese Medicine), Chengdu, China
| | - Li-juan Guan
- Department of gerontology and geriatrics, Chengdu Fifth People’s Hospital (The Second Clinical Medical College, Affiliated Fifth People’s Hospital of Chengdu University of Traditional Chinese Medicine), Chengdu, China
| | - Ming-hong Deng
- Department of gerontology and geriatrics, Chengdu Fifth People’s Hospital (The Second Clinical Medical College, Affiliated Fifth People’s Hospital of Chengdu University of Traditional Chinese Medicine), Chengdu, China
| | - Li-hua Zhou
- Department of gerontology and geriatrics, Chengdu Fifth People’s Hospital (The Second Clinical Medical College, Affiliated Fifth People’s Hospital of Chengdu University of Traditional Chinese Medicine), Chengdu, China
| |
Collapse
|
3
|
Talwar G, McKechnie T, Lee Y, Kazi T, El-Sayes A, Bogach J, Hong D, Eskicioglu C. Modified frailty index predicts postoperative morbidity in adhesive small bowel obstruction: analyzing the National Inpatient Sample 2015-2019. J Gastrointest Surg 2024; 28:205-214. [PMID: 38445910 DOI: 10.1016/j.gassur.2023.12.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Revised: 10/08/2023] [Accepted: 10/25/2023] [Indexed: 03/07/2024]
Abstract
BACKGROUND There are limited data identifying predictors of postoperative outcomes in adhesive small bowel obstruction (ASBO). This study used the National Inpatient Sample (NIS) to assess the efficacy of the modified frailty index (mFI) to predict postoperative morbidity among patients undergoing an operation for ASBO. METHODS A retrospective analysis of the NIS between September 1, 2015, and December 31, 2019, was performed to identify adult patients who underwent nonelective operative intervention for ASBO. The mFI was used to stratify patients as either frail (mFI value ≥ 0.27) or robust (mFI value < 0.27). The primary outcomes were overall in-hospital postoperative morbidity and mortality. The secondary outcomes were system-specific morbidity, length of stay (LOS), total in-hospital healthcare cost, and discharge disposition. Univariable and multivariable regressions were used. RESULTS Overall, 23251 robust patients and 6122 frail patients were included. Adjusted analyses demonstrated that frail patients had increased in-hospital mortality (adjusted odds ratio [aOR], 2.16; 95% CI, 1.80-2.60), postoperative morbidity (aOR, 1.63; 95% CI, 1.52-1.74), postoperative LOS (adjusted mean difference [aMD], 0.97 days; 95% CI, 0.73-1.21), and total in-hospital healthcare costs (aMD, $18,921; 95% CI, $14,608-$23,235) and were less likely to be discharged home (aOR, 0.59; 95% CI, 0.55-0.63). The findings were unchanged on subgroup analysis of patients undergoing open operation and those older than 65 years of age. CONCLUSION The mFI may predict postoperative outcomes for ASBO. Stratifying patients based on frailty may assist clinicians and patients in making informed decisions, setting realistic expectations, and proactively planning postoperative disposition.
Collapse
Affiliation(s)
- Gaurav Talwar
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Tyler McKechnie
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Yung Lee
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Tania Kazi
- Faculty of Health Sciences Undergraduate Medical Education, Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Abdullah El-Sayes
- Faculty of Health Sciences Undergraduate Medical Education, Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Jessica Bogach
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada; Division of General Surgery, Department of Surgery, Juravinski Hospital, Hamilton, Ontario, Canada
| | - Dennis Hong
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada; Division of General Surgery, Department of Surgery, St. Joseph's Healthcare, Hamilton, Ontario, Canada
| | - Cagla Eskicioglu
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada; Division of General Surgery, Department of Surgery, St. Joseph's Healthcare, Hamilton, Ontario, Canada.
| |
Collapse
|
4
|
Tian JY, Hao XY, Cao FY, Liu JJ, Li YX, Guo YX, Mi WD, Tong L, Fu Q. Preoperative Frailty Assessment Predicts Postoperative Mortality, Delirium and Pneumonia in Elderly Lung Cancer Patients: A Retrospective Cohort Study. Ann Surg Oncol 2023; 30:7442-7451. [PMID: 37326809 DOI: 10.1245/s10434-023-13696-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Accepted: 05/15/2023] [Indexed: 06/17/2023]
Abstract
BACKGROUND The purpose of this study was to investigate the predictive value of the 5-factor modified frailty index (mFI-5) for postoperative mortality, delirium and pneumonia in patients over 65 years of age undergoing elective lung cancer surgery. METHODS Data were collected from a single-center retrospective cohort study conducted in a general tertiary hospital from January 2017 to August 2019. In total, the study included 1372 elderly patients aged over 65 who underwent elective lung cancer surgery. They were divided into frail group (mFI-5, 2-5), prefrail group (mFI-5, 1) and robust group (mFI-5, 0) on the basis of mFI-5 classification. The primary outcome was postoperative 1-year all-cause mortality. Secondary outcomes were postoperative pneumonia and postoperative delirium. RESULTS Frailty group had the highest incidence of postoperative delirium (frailty 31.2% versus prefrailty 1.6% versus robust 1.5%, p < 0.001), postoperative pneumonia (frailty 23.5% versus prefrailty 7.2% versus robust 7.7%, p < 0.001), and postoperative 1-year mortality (frailty 7.0% versus prefrailty 2.2% versus robust 1.9%. p < 0.001). Frail patients have significantly longer length of hospitalization than those in the robust group and prefrail patients (p < 0.001). Multivariate analysis showed a clear link between frailty and increased risk of postoperative delirium (aOR 2.775, 95% CI 1.776-5.417, p < 0.001), postoperative pneumonia (aOR 3.291, 95% CI 2.169-4.993, p < 0.001) and postoperative 1-year mortality (aOR 3.364, 95% CI, 1.516-7.464, p = 0.003). CONCLUSIONS mFI-5 has potential clinical utility in predicting postoperative death, delirium and pneumonia incidence in elderly patients undergoing radical lung cancer surgery. Frailty screening of patients (mFI-5) may provide benefits in risk stratification, targeted intervention efforts, and assist physicians in clinical decision-making.
Collapse
Affiliation(s)
- Jing-Yang Tian
- Department of Anesthesia, Hainan Hospital of Chinese PLA General Hospital, Sanya, China
| | - Xin-Yu Hao
- Department of Anesthesia, The First Medical Center of Chinese, PLA General Hospital, Beijing, China
| | - Fu-Yang Cao
- Department of Anesthesia, The Six Medical Center of Chinese, PLA General Hospital, Beijing, China
| | - Jing-Jing Liu
- Department of Anesthesia, The First Medical Center of Chinese, PLA General Hospital, Beijing, China
| | - Yan-Xiang Li
- Department of Anesthesia, The First Medical Center of Chinese, PLA General Hospital, Beijing, China
| | - Yong-Xin Guo
- Department of Anesthesia, The First Medical Center of Chinese, PLA General Hospital, Beijing, China
| | - Wei-Dong Mi
- Department of Anesthesia, The First Medical Center of Chinese, PLA General Hospital, Beijing, China
| | - Li Tong
- Department of Anesthesia, The First Medical Center of Chinese, PLA General Hospital, Beijing, China.
| | - Qiang Fu
- Department of Anesthesia, The First Medical Center of Chinese, PLA General Hospital, Beijing, China.
| |
Collapse
|
5
|
Xia J, Li Z, Zhao D, Hu Y, Lu X. Prevalence of frailty among elderly patients with hip fracture in China: protocol for a systematic review and meta-analysis. BMJ Open 2023; 13:e072623. [PMID: 37852775 PMCID: PMC10603504 DOI: 10.1136/bmjopen-2023-072623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2023] Open
Abstract
INTRODUCTION Frailty is a clinical syndrome characterised by a reduced ability to adapt to external stressors owing to a reduced physiological reserve, which is caused by degeneration of multiple organ systems. Frailty is particularly prevalent among patients with hip fractures. Research on frailty in China started late; thus, evidence regarding the prevalence of frailty among older patients with hip fracture in China is scarce. The aim of this systematic review and meta-analysis is to systematically search for available data on the prevalence of frailty among older patients with hip fracture in China, assess the pooled prevalence of frailty and describe the association between frailty and clinical outcomes. METHOD AND ANALYSIS We will systematically search electronic databases, including Web of Science, Embase, PubMed, the Cochrane Library, Chinese National Knowledge Infrastructure and Wanfang data Database, to identify studies on the prevalence of frailty in older patients with hip fracture. Two reviewers will independently identify eligible studies according to defined inclusion criteria and critically appraise them using the Joanna Briggs Institute's standardised critical appraisal tool. Data will be analysed using Stata V.12.0. ETHICS AND DISSEMINATION Ethics approval is not required as this review will only include data from published sources. The results will be published in a peer-reviewed journal. PROSPERO REGISTRATION NUMBER CRD42022265321.
Collapse
Affiliation(s)
- Jinghua Xia
- Department of Nursing, Beijing Jishuitan Hospital, Capital Medical University, Beijing, China
| | - Zhenyu Li
- School of Stomatology, Peking University, Beijing, China
| | - Dan Zhao
- Department of Nursing, Beijing Jishuitan Hospital, Capital Medical University, Beijing, China
| | - Yanzhen Hu
- Department of Nursing, Beijing Jishuitan Hospital, Capital Medical University, Beijing, China
| | - Xuemei Lu
- Department of Nursing, Beijing Jishuitan Hospital, Capital Medical University, Beijing, China
| |
Collapse
|
6
|
Forssten MP, Cao Y, Mohammad Ismail A, Ioannidis I, Tennakoon L, Spain DA, Mohseni S. Validation of the orthopedic frailty score for measuring frailty in hip fracture patients: a cohort study based on the United States National inpatient sample. Eur J Trauma Emerg Surg 2023; 49:2155-2163. [PMID: 37349513 PMCID: PMC10520138 DOI: 10.1007/s00068-023-02308-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Accepted: 06/06/2023] [Indexed: 06/24/2023]
Abstract
BACKGROUND The Orthopedic Frailty Score (OFS) has been proposed as a tool for measuring frailty in order to predict short-term postoperative mortality in hip fracture patients. This study aims to validate the OFS using a large national patient register to determine its relationship with adverse outcomes as well as length of stay and cost of hospital stay. METHODS All adult patients (18 years or older) registered in the 2019 National Inpatient Sample Database who underwent emergency hip fracture surgery following a traumatic fall were eligible for inclusion. The association between the OFS and mortality, complications, and failure-to-rescue (FTR) was determined using Poisson regression models adjusted for potential confounders. The relationship between the OFS and length of stay and cost of hospital stay was instead determined using a quantile regression model. RESULTS An estimated 227,850 cases met the study inclusion criteria. There was a stepwise increase in the rate of complications, mortality, and FTR for each additional point on the OFS. After adjusting for potential confounding, OFS 4 was associated with an almost ten-fold increase in the risk of in-hospital mortality [adjusted IRR (95% CI): 10.6 (4.02-27.7), p < 0.001], a 38% increased risk of complications [adjusted IRR (95% CI): 1.38 (1.03-1.85), p = 0.032], and an almost 11-fold increase in the risk of FTR [adjusted IRR (95% CI): 11.6 (4.36-30.9), p < 0.001], compared to OFS 0. Patients with OFS 4 also required a day and a half additional care [change in median length of stay (95% CI): 1.52 (0.97-2.08), p < 0.001] as well as cost approximately $5,200 more to manage [change in median cost of stay (95% CI): 5166 (1921-8411), p = 0.002], compared to those with OFS 0. CONCLUSION Patients with an elevated OFS display a substantially increased risk of mortality, complications, and failure-to-rescue as well as a prolonged and more costly hospital stay.
Collapse
Affiliation(s)
- Maximilian Peter Forssten
- Department of Orthopedic Surgery, Orebro University Hospital, 701 85 Orebro, Sweden
- School of Medical Sciences, Orebro University, 702 81 Orebro, Sweden
| | - Yang Cao
- Clinical Epidemiology and Biostatistics, School of Medical Sciences, Faculty of Medicine and Health, Orebro University, 701 82 Orebro, Sweden
| | - Ahmad Mohammad Ismail
- Department of Orthopedic Surgery, Orebro University Hospital, 701 85 Orebro, Sweden
- School of Medical Sciences, Orebro University, 702 81 Orebro, Sweden
| | - Ioannis Ioannidis
- Department of Orthopedic Surgery, Orebro University Hospital, 701 85 Orebro, Sweden
- School of Medical Sciences, Orebro University, 702 81 Orebro, Sweden
| | - Lakshika Tennakoon
- Department of Surgery, Section of Trauma and Acute Care Surgery, Stanford University School of Medicine, Stanford, CA USA
| | - David A. Spain
- Department of Surgery, Section of Trauma and Acute Care Surgery, Stanford University School of Medicine, Stanford, CA USA
| | - Shahin Mohseni
- School of Medical Sciences, Orebro University, 702 81 Orebro, Sweden
- Division of Trauma, Critical Care and Acute Care Surgery, Department of Surgery, Sheik Shakhbout Medical City – Mayo Clinic, Abu Dhabi, United Arab Emirates
| |
Collapse
|
7
|
Huang JW, Yang YF, Gao XS, Zhou M, Xiao N, Kuang JX, Xu ZH. The impact of preoperative single low-dose dexamethasone on in-hospital prognosis in geriatric intertrochanteric fracture patients: Analysis of secondary outcomes in a randomized controlled trial. Surgery 2023; 174:1041-1049. [PMID: 37481423 DOI: 10.1016/j.surg.2023.06.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 04/03/2023] [Accepted: 06/18/2023] [Indexed: 07/24/2023]
Abstract
BACKGROUND Intertrochanteric fracture in the geriatric population is associated with poor prognosis, which may be attributed to consistent stress and the systemic inflammatory response. Dexamethasone is an exogenous glucocorticoid commonly used in clinical practice for broad anti-inflammatory action. The purpose is to investigate whether a single preoperative low-dose dexamethasone can improve the in-hospital prognosis in geriatric intertrochanteric fracture patients undergoing internal fixation surgery. METHODS Between June 2020 and October 2022, 219 eligible patients with intertrochanteric fractures were in this study. After meeting the inclusion and exclusion criteria, 160 patients were randomly allocated to the dexamethasone or placebo groups (80 patients who are geriatric with an intertrochanteric fracture in each group). The patients in the dexamethasone group received 10 mg (2 mL) of dexamethasone intravenously, whereas the patients in the placebo group received 2 mL of saline intravenously within 30 minutes before being sent to the operating room. The efficacy-related outcomes (the first bed-chair transfer ability, in-hospital mortality, and length of stay) and safety-related outcomes (infection events and hyperglycemia) were collected for analysis. RESULTS There were no significant differences in the baseline characteristics between the 2 groups. The dexamethasone group had a significantly higher rate of the first bed-chair transfer than the placebo group (65.0% [52/80] vs 48.8% [39/80], relative risk = 1.46, 95% confidence interval = 1.02 to 2.11; P = .038). One patient in the dexamethasone group and 7 patients in the placebo group died during hospitalization (1.3% [1/80] vs 8.8% [7/80], relative risk = 0.92, 95% confidence interval = 0.86 to 0.99; P = .07). No differences were found in the length of stay, infections, and hyperglycemia between the 2 groups. CONCLUSION A single preoperative low-dose of dexamethasone can improve the in-hospital prognosis (increase the ability of the first bed-chair transfer and potentially decrease the in-hospital mortality) in geriatric intertrochanteric fracture patients after internal fixation surgery.
Collapse
Affiliation(s)
- Jian-Wen Huang
- Department of Orthopaedic Surgery, Guangzhou First People's Hospital, The Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangdong, China
| | - Yun-Fa Yang
- Department of Orthopaedic Surgery, Guangzhou First People's Hospital, The Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangdong, China.
| | - Xiao-Sheng Gao
- Department of Orthopaedic Surgery, Guangzhou First People's Hospital, The Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangdong, China
| | - Mi Zhou
- Department of Orthopaedic Surgery, Guangzhou First People's Hospital, The Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangdong, China
| | - Na Xiao
- Department of Orthopaedic Surgery, Guangzhou First People's Hospital, The Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangdong, China
| | - Jiong-Xiang Kuang
- Department of Orthopaedic Surgery, Guangzhou First People's Hospital, The Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangdong, China
| | - Zhong-He Xu
- Department of Orthopaedic Surgery, Guangzhou First People's Hospital, The Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangdong, China
| |
Collapse
|
8
|
Walsh M, Ferris H, Brent L, Ahern E, Coughlan T, Romero-Ortuno R. Development of a Frailty Index in the Irish Hip Fracture Database. Arch Orthop Trauma Surg 2023; 143:4447-4454. [PMID: 36210379 PMCID: PMC10293399 DOI: 10.1007/s00402-022-04644-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 10/01/2022] [Indexed: 11/24/2022]
Abstract
INTRODUCTION In older people, hip fracture can lead to adverse outcomes. Frailty, capturing biological age and vulnerability to stressors, can indicate those at higher risk. We derived a frailty index (FI) in the Irish Hip Fracture Database (IHFD) and explored associations with prolonged length of hospital stay (LOS ≥ 30 days), delirium, inpatient mortality and new nursing home admission. We assessed whether the FI predicted those outcomes independently of age, sex and pre-operative American Society of Anaesthesiology (ASA) score. MATERIALS AND METHODS A 21-item FI was constructed with 17 dichotomous co-morbidities, three 4-level ordinal pre-morbid functional variables (difficulty with indoor mobility, outdoor mobility, and shopping) and nursing home provenance (yes/no). The FI was computed as the proportion of items present and divided into tertiles (low, medium, high risk). Independent associations between FI and outcomes were explored with logistic regression, from which we extracted adjusted Odds Ratios (aOR) and Areas Under the Curve (AUC). RESULTS From 2017 to 2020, the IHFD included 14,615 hip fracture admissions, mean (SD) age 80.4 (8.8), 68.9% women. Complete FI data were available for 12,502 (85.5%). By FI tertile (low to high risk), prolonged LOS proportions were 5.9%, 16.1% and 23.1%; delirium 5.5%, 13.5% and 17.6%; inpatient mortality 0.6%, 3.3% and 10.1%; and new nursing home admission 2.2%, 5.9% and 11.3%. All associations were statistically significant (p < 0.001) independently of age and sex. AUC analyses showed that the FI score, added to age, sex, and ASA score, significantly improved the prediction of delirium and new nursing home admission (p < 0.05), and especially prolonged LOS and inpatient mortality (p < 0.001). CONCLUSIONS A 21-item FI in the IHFD was a significant predictor of outcomes and added value to traditional risk markers. The utility of a routinely derived FI to more effectively direct limited orthogeriatric resources requires prospective investigation.
Collapse
Affiliation(s)
- Mary Walsh
- School of Public Health, Physiotherapy and Sports Science, University College Dublin (UCD), Dublin, Ireland
| | - Helena Ferris
- Department of Public Health, Health Service Executive-South, Killarney, Ireland
| | - Louise Brent
- National Office of Clinical Audit (NOCA) and Royal College of Surgeons in Ireland (RCSI), Dublin, Ireland
| | - Emer Ahern
- Cork University Hospital (CUH) and University College Cork (UCC), Cork, Ireland
| | - Tara Coughlan
- Discipline of Medical Gerontology, School of Medicine, Trinity College Dublin (TCD), Dublin, Ireland
| | - Roman Romero-Ortuno
- Discipline of Medical Gerontology, School of Medicine, Trinity College Dublin (TCD), Dublin, Ireland.
| |
Collapse
|
9
|
Ou Y, Wang H, Yang L, Jiang W. Frailty is associated with an increased risk of postoperative pneumonia in elderly patients following surgical treatment for lower-extremity fractures: A cross-sectional study. Medicine (Baltimore) 2023; 102:e33557. [PMID: 37058022 PMCID: PMC10101317 DOI: 10.1097/md.0000000000033557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Accepted: 03/28/2023] [Indexed: 04/15/2023] Open
Abstract
Elderly patients with lower-extremity fractures are at high risk of postoperative pneumonia (POP) after surgery due to longtime bed rest. This study aimed to explore whether preoperative frailty is an independent risk factor for POP in elderly patients undergoing surgical treatment for lower-extremity fractures. The study adopted a cross sectional design with 568 patients (≥60 years) admitted to a tertiary hospital in China from January 1, 2021 to June 30, 2022, for surgical intervention of a significant lower-extremity fracture. Preoperative frailty was assessed using the CFS (Clinical Frailty Scale). POP was assessed based on the classic diagnostic criteria reported in previous studies. Univariate and multiple logistic regression analyses were conducted to determine the impacts of preoperative frailty on POP. Of the 568 elderly patients, 65 (11.4%) developed pneumonia during postoperative hospitalization. There were significant differences among gender, hypoproteinemia, type of anesthesia, history of chronic obstructive pulmonary disease (COPD), and CFS scores. Multiple regression analysis revealed that the risk of POP in vulnerable, mildly frail, and severely frail patients increased by 2.38 times (P = .01, 95% CI [1.22-1.91]), 3.32 (P = .00, 95% CI [2.39-5.61]), and 5.36 (P = .00, 95% CI [3.95-6.52]), significantly. 12.8% of patients with hip fractures and 8.9% of patients with other main types of lower-extremity fractures developed POP. However, the difference between hip and non-hip fractures was not statistically significant (P > .05). Preoperative frailty increases the risk of POP in elderly patients after surgical treatment of main lower-extremity fractures. The severer the preoperative frailty is, the higher the risk of preoperative pneumonia is in elderly patients with lower-extremity fractures. CFS is simple and feasible for the assessment of frailty in elderly patients with lower-extremity fractures. Preoperative frailty assessment and appropriate management strategies should be considered in the perioperative management of elderly patients with lower-extremity fractures.
Collapse
Affiliation(s)
- Yili Ou
- Department of Orthopedics, Deyang People’s Hospital/Orthopedic Center of Deyang City, Deyang, China
| | - Hong Wang
- Department of Orthopedics, Deyang People’s Hospital/Orthopedic Center of Deyang City, Deyang, China
| | - Ling Yang
- Department of Orthopedics, Deyang People’s Hospital/Orthopedic Center of Deyang City, Deyang, China
| | - Wei Jiang
- Department of Orthopedics, Deyang People’s Hospital/Orthopedic Center of Deyang City, Deyang, China
| |
Collapse
|
10
|
Tian M, Wang Z, Zhu Y, Tian Y, Zhang K, Li X. Incidence, Causes, and Risk Factors of Unplanned Readmissions in Elderly Patients Undergoing Hip Fracture Surgery: An Observational Study. Clin Interv Aging 2023; 18:317-326. [PMID: 36883190 PMCID: PMC9985873 DOI: 10.2147/cia.s395012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Accepted: 02/17/2023] [Indexed: 03/03/2023] Open
Abstract
Aim The purpose of this study was to examine the incidence and cause of unplanned readmission after Surgically Treated Hip Fractures in Elderly Patients and identify the associated risk factors. Methods This study retrospectively collected the data on elderly patients who underwent hip fracture surgery at two institutions from January 2020 to December 2021, and identified those who were readmitted within 12 months postoperatively. Based on the presence or not of postoperative readmission, they were divided into readmission and non-readmission groups. Demographics, surgery-related variables, and laboratory parameters were compared between groups. The specific causes for documented readmission were collected and summarized. Multivariate logistic regression analysis was performed to identify the associated risk factors. Results There were 930 patients including 76 (8.2%) patients who were readmitted within 12 months postoperatively. Overall, cardiac and respiratory complications and new-onset fractures were the first three common causes of readmission, taking an overwhelming proportion of 53.9% (41/76). Over 60% (61.8%, 47/76) of readmissions occurred within 30 days after surgery, with medical complications taking a predominance (89.4%, 42/47). New-onset fractures accounted for a proportion of 18.4% (14/76), occurring at different time points; especially, at 90-365 days, it accounted for 44.4% (8/18). Multivariate analysis revealed that age ≥80 years (OR, 1.0, 95% CI, 1.0 to 1.1; P=0.032), preoperative albumin level ≤21.5 g/L (OR, 1.1, 95% CI, 1.0 to 1.2; P=0.009), the postoperative occurrence of DVT (OR, 4.2, 95% CI, 2.5 to 7.2; P=0.001), and local anesthesia (OR, 2.1, 95% CI, 1.1 to 4.0; P=0.029) were independent risk factors for unplanned readmissions. Conclusion This study identified several risk factors for unplanned readmissions after elderly hip fractures, and provided detailed information about unplanned readmissions.
Collapse
Affiliation(s)
- Miao Tian
- Department of Orthopedic Surgery, the Third Hospital of Hebei Medical University, Shijiazhuang, People's Republic of China
| | - Zhijia Wang
- Department of Joint Surgery, Huai 'an Hospital of Huai'an City, Huai'an, People's Republic of China
| | - Yanbin Zhu
- Department of Orthopedic Surgery, the Third Hospital of Hebei Medical University, Shijiazhuang, People's Republic of China.,Hebei Orthopedic Research Institute, Key Laboratory of Biomechanics of Hebei Province, Shijiazhuang, People's Republic of China
| | - Yunxu Tian
- Department of Orthopedic Surgery, the Third Hospital of Hebei Medical University, Shijiazhuang, People's Republic of China
| | - Kexin Zhang
- Department of Orthopedic Surgery, the Third Hospital of Hebei Medical University, Shijiazhuang, People's Republic of China
| | - Xiuting Li
- Department of Orthopedic Surgery, the Third Hospital of Hebei Medical University, Shijiazhuang, People's Republic of China
| |
Collapse
|
11
|
Wong BLL, Chan YH, O'Neill GK, Murphy D, Merchant RA. Frailty, length of stay and cost in hip fracture patients. Osteoporos Int 2023; 34:59-68. [PMID: 36197493 DOI: 10.1007/s00198-022-06553-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Accepted: 09/12/2022] [Indexed: 01/07/2023]
Abstract
UNLABELLED A hip fracture causes high morbidity and mortality. Frailty is associated with adverse outcomes and increased costs. Frailty measured using the Hospital Frailty Risk Score (HFRS) is associated with higher costs and adverse outcomes. HFRS is useful as a fuss-free frailty measurement in the management of older adults with hip fractures. INTRODUCTION Hip fractures account for an increasing number of hospital admissions around the world and are associated with high rates of morbidity and mortality. Frailty is increasingly recognized to be associated with adverse outcomes and increased costs. The purpose of this study is to determine the association of the Hospital Frailty Risk Score (HFRS) with the healthcare cost and outcomes in older adults who present with a hip fracture. METHODS A retrospective analysis was performed on 1014 patients ≥ 60 years who presented with a hip fracture between January 2016 to June 2020. Each patient was classified into HFRS low, intermediate or high frailty cohorts. Demographics, hip fracture type, comorbidities, Charlson Comorbidity Index (CCI), American Society of Anesthesiologist score (ASA), costs, length of stay, time to surgery, complications, readmission rate and mortality were compared between the cohorts. RESULTS Median total hospitalization costs were significantly higher in the highest HFRS (SGD$22,432) patients as compared to intermediate (SGD$18,759) and low HFRS (SGD$15,671) patients. The difference between the high and low groups remains significant after adjusting for covariates using quantile regression. Similar results were shown for median length of stay (14 vs 10 vs 8 days), total number of complications (2 vs 1 vs 0) and adjusted time to surgery (p < 0.05). HFRS was not associated with 30-day readmission or 30-day or 1-year mortality. CONCLUSION Frailty is associated with a marked increase in total costs in hip fracture patients. HFRS proved useful in estimating LOS and outcomes for older patients with hip fractures.
Collapse
Affiliation(s)
- Beatrix Ling Ling Wong
- Division of Geriatric Medicine, Department of Medicine, National University Hospital, 1E Kent Ridge Road, Singapore, 119228, Singapore.
| | - Yiong Huak Chan
- Biostatistics Unit, Yong Loo Lin School of Medicine, National University of Singapore, 10 Medical Drive, Singapore, 117597, Singapore
| | - Gavin Kane O'Neill
- Department of Orthopaedic Surgery, National University Hospital, 1E Kent Ridge Road, Singapore, 119228, Singapore
| | - Diarmuid Murphy
- Department of Orthopaedic Surgery, National University Hospital, 1E Kent Ridge Road, Singapore, 119228, Singapore
| | - Reshma Aziz Merchant
- Division of Geriatric Medicine, Department of Medicine, National University Hospital, 1E Kent Ridge Road, Singapore, 119228, Singapore
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, 10 Medical Drive, Singapore, 117597, Singapore
| |
Collapse
|
12
|
Muacevic A, Adler JR. A Prospective Study Correlating Preoperative Modified Frailty Index With One-Year Mortality in the Elderly With Hip Fractures. Cureus 2022; 14:e30951. [PMID: 36465740 PMCID: PMC9711920 DOI: 10.7759/cureus.30951] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/31/2022] [Indexed: 01/25/2023] Open
Abstract
Background Hip fractures occur frequently in the elderly population over the age of 60 years following low-energy domestic falls. The postoperative mortality after hip fracture surgery depends on numerous factors like comorbidities, pre-fall ambulatory status, nutritional status, cognition, and overall physical health. In this context, the physiological age and reserve play a vital role in mortality after hip fracture surgeries. This physiological reserve is measured in terms of "frailty." There are many frailty indices that assess the physiological reserves of an elderly patient. The modified frailty index (MFI) is one of the validated indexes predicting postoperative complications and mortality. So we concluded there is a need to assess the patients with MFI preoperatively, based on which mortality and postoperative complications could be predicted in our patients. Materials and methods We included 100 patients aged more than 60 years with intertrochanteric and neck of the femur fractures, who were managed surgically. We followed the patients for one year and observed the immediate and late complications and mortality at the end of one year. To reduce bias, patients with pathological fractures, revision surgeries, contralateral fractures, high-energy trauma, younger than 60 years of age, and previous proximal femur fracture surgery on the side of injury were excluded from the study. Results The primary objective was to study the correlation between the MFI with one-year mortality. We observe that the MFI score had a significant effect on mortality at one year (p-value = 0.0316). With a unit increase in the MFI score, the odds of death increase by a factor of 1.52. Conclusion There is a strong correlation between MFI with one-year mortality and postoperative complications after hip fracture surgeries in the elderly. This MFI can be used as a preoperative predictive model to predict the mortality and postoperative complications after hip fractures in the elderly. It will also help patients and their caretakers in decision-making and elucidating surgery choices.
Collapse
|
13
|
Lee SH, Kim KU. Risk Factors for Postoperative Pneumonia in the Elderly Following Hip Fracture Surgery: A Systematic Review and Meta-Analysis. Geriatr Orthop Surg Rehabil 2022; 13:21514593221083825. [PMID: 35634259 PMCID: PMC9133882 DOI: 10.1177/21514593221083825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 02/02/2022] [Accepted: 02/09/2022] [Indexed: 11/16/2022] Open
Abstract
Introduction: Pneumonia is a serious complication following hip fracture surgery in older people. However, the prevalence and risk factors of postoperative pneumonia (POP) are not well-established. This study identified pre- and peri-operative factors associated with the development of POP following hip fracture surgery. Methods: We searched the Cochrane library, PubMed, and Embase databases for relevant articles published up to June 2021. Studies involving older patients who underwent hip fracture surgery were considered if they detailed the demographic or surgical characteristics of the participants. For all analyses, the pooled odds ratios (ORs) and 95% confidence intervals (95% CIs) were calculated. Results: A total of 24 studies (288819 participants) were included. The overall prevalence of POP following hip fracture surgery was 5.0%. There were 36 risk factors for POP, and the meta-analysis included the five most common: delayed surgery (OR: 1.84, 95% CI: 1.29-2.63), low serum albumin (OR: 2.34, 95% CI: .82-6.73), chronic respiratory diseases (OR: 2.42, 95% CI: 1.82-3.24), increased age (OR: 1.25, 95% CI:1.11-1.40), and male sex (OR: 2.22, 95% CI: 2.00-2.47). Conclusions: The prevalence of POP was 5.0% following hip fracture surgery in the elderly. Older age, male sex, chronic respiratory diseases, delayed surgery, and low serum albumin were significant risk factors. Clinicians treating hip fracture patients must remain be aware of these risk factors.
Collapse
Affiliation(s)
- Sang Hee Lee
- Department of Internal Medicine, Wonkwang University Sanbon Hospital, Gunpo-si, Republic of Korea.,Department of Internal Medicine, Wonkwang University College of Medicine, Iksan, Republic of Korea
| | - Ki Uk Kim
- Department of Internal Medicine, Pusan National University Hospital, Busan, Republic of Korea
| |
Collapse
|
14
|
Ma Y, Wang A, Lou Y, Peng D, Jiang Z, Xia T. Effects of Frailty on Outcomes Following Surgery Among Patients With Hip Fractures: A Systematic Review and Meta-Analysis. Front Med (Lausanne) 2022; 9:829762. [PMID: 35402430 PMCID: PMC8984086 DOI: 10.3389/fmed.2022.829762] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 01/19/2022] [Indexed: 12/16/2022] Open
Abstract
Background Frailty is a syndrome of multisystem dysfunction in the elderly. The association between preoperative frailty and postoperative outcomes in patients with hip fractures is unclear. To address this issue, we performed a meta-analysis to determine the association of frailty with postoperative mortality, complications, and readmission in patients with hip fractures. Methods We searched PubMed, Web of Science, Embase, and The Cochrane Library for cohort studies of frailty associated with postoperative adverse events in patients with hip fractures from inception to November 6, 2021. The Newcastle-Ottawa Scale was used to evaluate the quality of the included literature. Statistical analysis of meta-analysis was performed using Review Manager 5.3. Results Twelve retrospective cohort studies and seven prospective cohort studies involving a total of 62,132 patients met the inclusion criteria for this meta-analysis. Compared with non-frail patients, the pooled results showed that frailty was associated with patient in-hospital mortality (relative risk [RR] = 2.93; 95% confidence intervals [CI]: 2.56–3.34), 30-day mortality (RR = 2.85, 95%CI: 1.67–4.85) and total complications (RR = 1.79, 95%CI: 1.50–2.15). Subgroup analysis showed that the type of study design and frailty assessment tool had no significant effect on the results. Sensitivity analysis showed that the polled results of frailty predicted one-year mortality and 30-day readmission was unstable. Conclusions In this meta-analysis, we found that preoperative frailty may be associated with postoperative adverse events in patients with hip fractures, including in-hospital mortality, 30-day mortality, and postoperative complications. Systematic Review Registration: PROSPERO, identifier: CRD42021287739.
Collapse
Affiliation(s)
- Yan Ma
- Department of Orthopaedic Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi, China
- Nursing School, Zunyi Medical University, Zunyi, China
| | - Ansu Wang
- Department of Orthopaedic Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Yijiao Lou
- Nursing School, Zunyi Medical University, Zunyi, China
| | - Daojuan Peng
- Nursing School, Zunyi Medical University, Zunyi, China
| | - Zhongyan Jiang
- Department of Orthopaedic Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Tongxia Xia
- Nursing School, Zunyi Medical University, Zunyi, China
- Department of Nursing, Affiliated Hospital of Zunyi Medical University, Zunyi, China
- *Correspondence: Tongxia Xia
| |
Collapse
|
15
|
Shen Y, Wang Y, Shi Q, Hou L, Chen X, Dong B, Hao Q. The Electronic Frailty Index is Associated with Increased Infection and All-Cause Mortality Among Older Patients with Primary Lung Cancer: A Cohort Study. Clin Interv Aging 2021; 16:1825-1833. [PMID: 34675497 PMCID: PMC8523305 DOI: 10.2147/cia.s335172] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Accepted: 10/04/2021] [Indexed: 02/05/2023] Open
Abstract
Introduction To assess whether the electronic frailty index (eFI) is independently associated with all-cause mortality and chemotherapy adverse reactions among older Chinese patients with lung cancer. Methods This is a retrospective, single-institution, chart review, and not a prospective cohort study. All patients ≥60 years with primary lung cancer in the West China Hospital from 2010 to 2017 were included in this cohort. The eFI was established using 35 frailty-related variables in the electronic medical record (EMR) system and was cut by a value of 0.2 to classify the patients into frail (eFI ≥0.2) and robust/non-frail groups (eFI<0.2). The long-term outcome was all-cause mortality identified by government databases and telephone interviews. Short-term outcomes were any infection, bone suppression, chemotherapy discontinuation, impaired liver function, any gastrointestinal reactions and length of hospitalization. An inverse probability weighting method was used to eliminate the potential confounders. An adjusted Kaplan–Meier estimator and a weighted Cox model were used to calculate the survival and hazard ratio. A weighted logistic model was used to calculate the odds of short-term outcomes. Results A total of 997 patients were included in this study with a median follow-up of 34 months. Compared with non-frail patients, frail patients had an increased risk of mortality and shortened overall survival (hazard ratio [HR] of mortality, 1.29; 95% confidence interval [CI], 1.05 to 1.60; adjusted restricted mean survival time [aRMST] difference, −5.68 months; 95% CI, −10.15 to −1.21 months). For short-term outcomes, frail patients had increased odds of infection compared to non-frail patients (odds ratio, 1.83; 95% CI, 1.09 to 3.06). No other outcome showed a significant result. Conclusion This study of older Chinese patients with primary lung cancer suggests that eFI-based frail patients had worse prognoses with increased risk of all-cause mortality and shortened survival times.
Collapse
Affiliation(s)
- Yanjiao Shen
- Department of Guideline and Rapid Recommendation, Cochrane China Centre, MAGIC China Centre, Chinese Evidence-Based Medicine Centre, West China Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China
| | - Yuting Wang
- Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, Canada
| | - Qingyang Shi
- Department of Guideline and Rapid Recommendation, Cochrane China Centre, MAGIC China Centre, Chinese Evidence-Based Medicine Centre, West China Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China
| | - Lisha Hou
- The Center of Gerontology and Geriatrics/National Clinical Research Center of Geriatrics, West China Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China
| | - Xiaoyan Chen
- Zigong Mental Health Center, Zigong, Sichuan, People's Republic of China
| | - Birong Dong
- The Center of Gerontology and Geriatrics/National Clinical Research Center of Geriatrics, West China Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China
| | - Qiukui Hao
- The Center of Gerontology and Geriatrics/National Clinical Research Center of Geriatrics, West China Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China.,School of Rehabilitation Science, McMaster University, Hamilton, Ontario, Canada
| |
Collapse
|