Surgery In Canada Research Articles

Access to Thoracic Aortic Care: Challenges and Opportunities in Universal Health Coverage Systems

Access to cardiovascular care requires geographical accessibility, infrastructural capacity, health care quality, financial affordability, and societal acceptability.1 In high-income countries with universal health coverage (UHC) models, such as Canada, geographic accessibility remains 1 of the most pressing barriers.2,3 Canada is the second-largest country by total area and fourth by land mass but 236th in terms of population density.4 The inherent regionalization of cardiac surgery in Canada results in cardiac surgical centres concentrating in larger cities, whereas those living outside large cities are scattered across vast distances.

Opioid prescribing practices prior to elective foot and ankle surgery: a population-based evaluation using health administrative data from a tertiary hospital in Canada

BackgroundComplex elective foot and ankle surgery is known to be painful so most patients are prescribed opioids at the time of surgery; however, the number of patients prescribed opioids while waiting for surgery in Canada is unknown. Our primary objective was to describe the pre and postoperative prescribing practices for patients in Alberta, Canada undergoing complex elective foot and ankle surgery. Secondarily, we evaluated postoperative opioid usage and hospital outcomes.MethodsIn this population-based retrospective analysis, we identified all adult patients who underwent unilateral elective orthopedic foot and ankle surgery at a single tertiary hospital between May 1, 2015 and May 31, 2017. Patient and surgical data were extracted from a retrospective chart review and merged with prospectively collected, individual level drug dispensing administrative data to analyze opioid dispensing patterns, including dose, duration, and prescriber for six months before and after foot and ankle surgery.ResultsOf the 100 patients, 45 had at least one opioid prescription dispensed within six months before surgery, and of these, 19 were long-term opioid users (> 90 days of continuous use). Most opioid users obtained opioid prescriptions from family physicians both before (78%) and after (65%) surgery. No preoperative non-users transitioned to long-term opioid use postoperatively, but 68.4% of the preoperative long-term opioid users remained long-term opioid users postoperatively. During the index hospitalization, preoperative long-term opioid users consumed higher doses of opioids (99.7 ± 120.5 mg/day) compared to opioid naive patients (28.5 ± 36.1 mg/day) (p < 0.001). Long-term opioid users stayed one day longer in hospital than opioid-naive patients (3.9 ± 2.8 days vs 2.7 ± 1.1 days; p = 0.01).ConclusionsA significant number of patients were dispensed opioids before and after foot and ankle surgery with the majority of prescriptions coming from primary care practitioners. Patients who were prescribed long-term opioids preoperatively were more likely to continue to use opioids at follow-up and required larger in-hospital opioid dosages and stayed longer in hospital. Further research and education for both patients and providers are needed to reduce the community-based prescribing of opioid medication pre-operatively and provide alternative pain management strategies prior to surgery to improve postoperative outcomes and reduce long-term postoperative opioid use.

A Validation of Hysterectomy Procedural Codes in the Canadian Institute for Health Information Discharge Abstract Database.

The Canadian Institute of Health Information (CIHI) Discharge Abstract Database (DAD) is the main source of routinely collected data for gynaecologic surgery in Canada and is increasingly used for research. These data are prone to error as they were originally collected for administrative purposes, and they therefore should be validated for clinical research. The objective of this study was to validate hysterectomy codes from the DAD at a single institution. This was a retrospective observational study using an existing hospital database. We obtained a consecutive sample of all gynaecologic procedures performed at The Ottawa Hospital from April 2016 to March 2017 using the DAD. Patient data, including diagnosis, procedure type, concomitant procedure, and surgical approach, were reabstracted from records. These data were compared with the DAD Canadian Classification of Health Interventions (CCI) codes using sensitivity, specificity, positive predictive value (PPV), and κ coefficient with associated 95% confidence intervals (CIs). Of 1068 gynaecologic procedures, 639 hysterectomies were performed: 39.2% vaginally, 35.4% laparoscopically, and 25.4% abdominally. Median patient age was 46 years (IQR 41-54 y). The κ, sensitivity, specificity, and PPV for all hysterectomies were 0.92 (95% CI 0.90-0.95), 95.1% (95% CI 93.2-96.7), 97.9% (95% CI 96.6-99.3), and 98.5% (95% CI 97.6-99.5), respectively. The κ coefficients for vaginal, laparoscopic, and abdominal hysterectomy were 0.91 (95% CI 0.88-0.94), 0.92 (95% CI 0.89-0.95), and 0.92 (95% CI 0.89-0.95), respectively. Agreement for sub-total hysterectomy and bilateral salpingectomy with oophorectomy was excellent, with κ exceeding 0.80. The level of agreement for salpingectomy alone was poor, though specificity and PPV were high. Our study suggests that hysterectomy-associated CCI codes in CIHI's DAD have a high level of validity for clinical research purposes.

Improving Equity, Diversity, and Inclusion in Plastic, Reconstructive, and Aesthetic Surgery in Canada: A Call to Action.

The global COVID-19 pandemic has brought to light the significant inequities in the delivery of healthcare, vaccine inequity, and differential access to life-saving treatments, which have disproportionately impacted marginalized and racialized populations. In this article, we acknowledge and recognize the centuries-old legacies perpetuating inequity, injustice, and oppression, we discuss the principles of Equity, Diversity, and Inclusion (EDI) and we call our Canadian plastic surgery colleagues and trainees to action. We propose a plan for (1) Education, (2) Mitigating Disparities in the Clinical Setting, and (3) Policy, Societies, and Leadership Education.

Failure to rescue in emergency general surgery in Canada

Background:The risk of death after a postoperative complication — known as failure to rescue (FTR) — has been proposed to be superior to traditional benchmarking outcomes, such as complication and mortality rates, as a measure of system quality. The purpose of this study was to identify the current FTR rate in emergency general surgery (EGS) centres across Canada. We hypothesized that substantial variability exists in FTR rates across centres.Methods:In this multicentre retrospective cohort study, we performed a secondary analysis of data from a previous study designed to evaluate operative intervention for nonappendiceal, nonbiliary disease by 6 EGS services across Canada (1 in British Columbia, 1 in Alberta, 3 in Ontario and 1 in Nova Scotia). Patients underwent surgery between Jan. 1 and Dec. 31, 2014. We conducted univariate analyses to compare patients with and without complications. We performed a sensitivity analysis examining the mortality rate after serious complications (Clavien–Dindo score 3 or 4) that required a surgical intervention or specialized care (e.g., admission to intensive care unit).Results:A total of 2595 patients were included in the study cohort. Of the 206 patients who died within 30 days, 145 (70.4%) experienced a complication before their death. Overall, the mortality rate after any surgical complication (i.e., FTR) was 16.0%. Ranking of sites by the traditional outcomes of complication and mortality rates differed from the ranking when FTR rate was included in the assessment.Conclusion:There was variability in FTR rates across EGS services in Canada, which suggests that there is opportunity for ongoing quality-improvement efforts. This study provides FTR benchmarking data for Canadian EGS services.

Mapping the current state of pediatric surgical pain care across Canada and assessing readiness for change

ABSTRACT Background Preventing pediatric chronic postsurgical pain is a patient, parent/caregiver, health care professional, and policymaker priority. Poorly managed presurgical and acute postsurgical pain are established risk factors for pediatric chronic postsurgical pain. Effective perioperative pain management is essential to prevent the transition from acute to chronic pain after surgery. Aims The aim of this study was to identify current pediatric surgical pain management practices and assess health system readiness for change at health care institutions conducting pediatric surgery in Canada. Methods An online survey was completed by 85 multidisciplinary health care professionals (nurses, surgeons, anesthesiologists, allied health) from 20 health institutions in Canada regarding institutional pre- and postsurgical pediatric pain care, specialty pain services, and Organizational Readiness for Implementing Change (ORIC). Results Of all specialty pain services, acute and chronic/complex pain services were most common, primarily with physician and nursing involvement. Alignment to recommended practices for pediatric pre- and postsurgical pain care varied (38.1%–79.8% reported “yes, for every child”), with tertiary/quaternary children’s hospitals reporting less alignment than other institutions (community/regional or rehabilitation hospitals, community treatment centers). No significant differences were reported between health care institutions serving pediatric populations only versus those also serving adults. Health care professional experience/practice was the most reported strength in pediatric surgical pain care, with inconsistent standard of care the most common gap. Participants “somewhat agreed” that their institutions were committed and capable of change in pediatric surgical pain care. Conclusions There is a continued need to improve pediatric pain care during the perioperative period at Canadian health care institutions to effectively prevent the development of pediatric postsurgical pain.

A framework for role allocation in education, research and leadership services in Canadian academic divisions of general surgery: a modified Delphi consensus.

Background:Moving toward a funding standard similar to that for clinical services for roles essential to the functioning of education, research and leadership services within divisions of general surgery is necessary to strengthen divisional resilience. We aimed to identify roles and underlying tasks in these services central to sustainable functioning of Canadian academic divisions of general surgery.Methods:Between June 2018 and October 2020, we used a 4-step modified Delphi method (online survey, face-to-face nominal group technique [n = 12], semistructured telephone interview [n = 8] and nominal group technique [n = 12]) to achieve national consensus from an expert panel of all 17 heads of academic divisions of general surgery in Canada on the roles and accompanying tasks essential to education, research and leadership services within an academic division of general surgery. We used 70% agreement to determine consensus.Results:The expert panel agreed that a framework for role allocation in education, research and leadership services was relevant and necessary. Consensus was reached for 7 roles within the educational service, 3 roles within the research service and 5 roles within the leadership service.Conclusion:Our framework represents a national consensus that defines role standards for education, research and leadership services in Canadian academic divisions of general surgery. The framework can help divisions build resiliency, and enable sustained and deliberate advances in these services.

Canadian Developmental Follow-up Practices in Children With Congenital Heart Defects: A National Environmental Scan

<h2>Abstract</h2><h3>Background</h3> Developmental follow-up is central to the timely identification of delays in at-risk children. Throughout Canada, data are currently lacking on the follow-up of children with congenital heart disease (CHD) after open-heart surgery. The objective of this study was to describe current Canadian developmental follow-up practices and to explore barriers to optimal follow-up. <h3>Methods</h3> A cross-sectional study was implemented with health professionals involved with the developmental follow-up of children with CHD in the 8 specialized hospitals that perform pediatric open-heart surgery in Canada. A questionnaire collected descriptive information about the setting and current follow-up practices. In addition, an interview was conducted to explore what would be considered optimal developmental follow-up in Canada and identify potential barriers. <h3>Results</h3> Four of the 8 tertiary care centres had a systematic developmental follow-up program that included screening and formal evaluation. These programs were only accessible to a subset of children with CHD identified to be at higher risk. Participants described current practices as suboptimal and aimed to develop a more systematic developmental follow-up program or expand an existing one. Participants emphasized the lack of human resources, financial supports, and limited dedicated time as major barriers to offering optimal follow-up care. <h3>Conclusions</h3> Current follow-up practices in Canada are considered suboptimal by health care specialists involved in treating children with CHD. These practices may fail to promptly identify children and adolescents with CHD who have developmental challenges. It is essential that we develop national recommendations to optimize the developmental follow-up practices in Canada for this high-risk population.

Trends and Contributing Factors in Medicolegal Cases Involving Spine Surgery.

Retrospective descriptive study. The aim of this study was to describe closed medicolegal cases involving physicians and spine surgery in Canada from a trend and patient safety perspective. Spine surgery is a source of medicolegal complaints against surgeons partly owing to the potential severity of associated complications. In previous medicolegal studies, researchers applied a medicolegal lens to their analyses without applying a quality improvement or patient safety lens. The study comprised a 15-year medicolegal trend analysis and a 5-year contributing factors analysis of cases (civil legal and regulatory authority matters) from the Canadian Medical Protective Association (CMPA), representing an estimated 95% of physicians in Canada. Included cases were closed by the CMPA between 2004 and 2018 (trends) or 2014 and 2018 (contributing factors). We fit a linear trend line to the annual rates of spine surgery cases per 1000 physician-years of CMPA membership for physicians in a neurosurgery or orthopedic surgery specialty. We then applied an ANOVA type III sum of squares test to determine the statistical significance of the annualized change rate over time. For the contributing factors analysis, we reported descriptive statistics for patient and physician characteristics, patient harm, and peer expert criticisms in each case. Our trend analysis included 340 cases. Case rates decreased significantly at an annualized change rate of -4.7% (P = 0.0017). Our contributing factors analysis included 81 civil legal and 19 regulatory authority cases. Most patients experienced health care-related harm (89/100, 89.0%). Peer experts identified intraoperative injuries (29/89, 32.6%), diagnostic errors (14/89, 15.7%), and wrong site surgeries (16/89, 18.0%) as the top patient safety indicators. The top factor contributing to medicolegal risk was physician clinical decision-making. Although case rates decreased, patient harm was attributable to health care in the majority of recently closed cases. Therefore, crucial opportunities remain to enhance patient safety in spine surgery.Level of Evidence: 4.

Prevalence of gender-based and sexual harassment within orthopedic surgery in Canada.

Background:Gender-based and sexual harassment are prevalent in the medical profession. We aimed to quantify the prevalence of such behaviours within orthopedic surgery in Canada and to identify any risk factors for experiencing gender-based or sexual harassment in the workplace.Methods:In collaboration with the Canadian Orthopaedic Association, we conducted a Canada-wide email questionnaire survey in June 2019 of all orthopedic surgeons registered with the Canadian Orthopaedic Association and the Canadian Orthopaedic Residents’ Association. The development of our questionnaire was informed by a review of the literature and published surveys on gender-based and sexual harassment, and consultation with researchers in intimate partner violence. We conducted a multivariable logistic regression analysis to identify risk factors for harassment.Results:Of the 1783 surgeons invited to participate, 465 returned the questionnaire (response rate 26.1%); the response rate was 48.1% for females and 22.1% for males. Overall, 331/433 respondents (76.4%, 95% confidence interval [CI] 72%–80%) and 315/423 respondents (74.5%, 95% CI 70%–78%) reported having experienced at least 1 occurrence of gender-based and sexual harassment, respectively. Women were significantly more likely than men to have experienced both gender-based and sexual harassment (odds ratio [OR] 16.2, 95% CI 4.8–54.0, and OR 2.2, 95% CI 1.2–4.0, respectively). Respondents who identified as nonwhite were significantly less likely than those who identified as white to have experienced gender-based harassment (OR 0.5, 95% CI 0.3–0.99).Conclusion:The prevalence of gender-based and sexual harassment is high within Canadian orthopedic surgery, and women are at highest risk for experiencing harassment. The results may provide the impetus for orthopedic societies to develop action plans and to re-examine and enforce policies to address these damaging behaviours appropriately.

Perpetrators of Gender-Based and Sexual Harassment in the Field of Orthopaedic Surgery.

Background:The prevalence of gender-based and sexual harassment in the field of orthopaedic surgery in Canada is high. Previous research in other jurisdictions has identified the most common perpetrators of harassment to be senior surgeons or directors. We aimed to identify the most frequent perpetrators of gender-based and sexual harassment in orthopaedic surgery in Canada.Methods:We conducted a Canada-wide survey of all orthopaedic surgeons registered with the Canadian Orthopaedic Association and the Canadian Orthopaedic Residents’ Association. The development of our 116-item questionnaire was informed by a review of the literature and other published gender-based and sexual harassment surveys. Descriptive analyses, including frequency counts with associated 95% confidence intervals (CIs), are reported for all data.Results:Of the 465 survey respondents, the median age was 43 years (interquartile range, 35 to 59) and respondents were most commonly male (72%), White (81%), married (77%), and staff orthopaedic surgeons (68%). Peers were identified as the most common perpetrators of gender-based harassment (55%, 95% CI, 50 to 59), and patients were identified as the most common perpetrators of sexual harassment (48%, 95% CI, 43 to 52). Women were more likely to report direct supervisors or patients as the perpetrators of gender-based and sexual harassment, and men reported peers as the most common perpetrators.Conclusion:Orthopaedic surgery peers and patients are the most commonly reported perpetrators of gender-based and sexual harassment in Canada. The results of this study may be helpful to institutions in designing and focusing educational programs and/or policies and procedures to help reduce harassment incidents in the training and work environment.

National Trends in Gender Diversity Among Trainees and Practicing Physicians in Otolaryngology–Head and Neck Surgery in Canada

Monitoring the evolution of gender diversity within medicine is essential to understanding the medical workforce and anticipating its future. To evaluate gender distribution and trends among trainees and practicing physicians in the field of otolaryngology-head and neck surgery (OHNS) across Canada. This cross-sectional study collected demographic data on the Canadian population, medical students, resident physicians, fellows, practicing physicians, and full-time professors from the following publicly available databases: the Canadian Post-MD Education Registry, the Canadian Medical Education Statistics from the Association of Faculties of Medicine of Canada, the Canadian Medical Association Masterfile, the Canadian Resident Matching Service archives, and the Canadian Institute for Health Information from 2000 to 2019. Information about the gender distribution in leadership positions and fellowships was obtained through publicly available websites where gender was either listed or assigned by authors. The primary outcomes were the proportion of women in OHNS and the evolution of gender diversity over time. In 2019, 65 of 155 of OHNS trainees were female (41.9%), whereas female representation among all surgical trainees combined was 1225 of 2496 (49.1%). Female OHNS trainees and practicing physicians are underrepresented despite a 13.3% increase in female trainees and a 14.3% increase in female staff physicians from 2000 to 2019. Proportionally fewer female graduates pursued a fellowship during a 10-year period compared with their male counterparts, with otology and neurotology having the lowest female representation (6 of 27 [22.2%]). A minimal increase occurred in the number of women holding academic leadership positions (eg, 4 of 13 residency training programs had a previous or current female director). Despite the overall increase in the representation of women in the field of OHNS in Canada, these findings suggest that persistent gender gaps remain with respect to academic leadership positions and fellowship training. Continuous monitoring of the surgical workforce is important to highlight and address gender disparities within OHNS.

MA12.05 The Impact of the COVID-19 Pandemic on Post-Operative Outcomes of Thoracic Cancer Surgery in Canada

During the COVID-19 pandemic, surgical services had to adapt their priority of operations to ensure an optimal and safe delivery of care. To minimize disease transmission and create surge capacity, elective and non-emergent procedures, including cancer operations, were initially delayed or cancelled. Studies have described an increase in post-operative complications during the pandemic for cancer patients undergoing surgery, while others have shown that thoracic surgery can be conducted safely despite this global health crisis.

P55.02 Robotic Surgery in Canada: Are Patients Willing to Pay Out-of-Pocket?

Robotic-assisted thoracic surgery has been demonstrated to be safe and effective but is associated with high capital and operating costs which are not reimbursed by the Canadian government, limiting patient access to this platform. We hypothesized that Canadian patients who had experienced robotic surgery on research or philanthropic funds would have been willing to contribute payments out-of-pocket to gain access to this technology.

Dissecting Medical Litigation: An Analysis of Canadian Legal Cases in Plastic Surgery.

Introduction: Plastic surgeons are more likely to face medical litigation, compared to other specialists. Although this has been previously studied in other countries, there is a paucity of data regarding legal medical cases within Canada. The goal of this study was to compile and analyze all medical litigations in plastic surgery in Canada and identify themes associated them. Methods: A systematic search of the 2 largest Canadian online legal databases, LexisNexis Canada and WestLawNext Canada, was conducted to retrieve all legal medical cases against plastic surgeons in Canadian courts. Quantitative and qualitative analyses were performed to dissect the characteristics of plastic surgery litigation in Canada. Results: A total of 105 legal cases were included in this analysis, including 81 lawsuits and 24 appeals. The preponderance of cases was related to breast surgeries (47.0%), followed by head and neck surgeries (18.1%), with 76.5% being related to cosmetic surgery; 64.2% were ruled in favour of the surgeon. The lack of preoperative informed consent was highly associated with a final ruling in favour of the patient (P < .0001). The average monetary value of damages awarded was $61 076. There was no significant difference in monetary value between cosmetic and reconstructive cases. Conclusion: The majority of medical litigation in plastic surgery in Canada is associated with cosmetic surgeries, most commonly of the breast. Lack of informed consent is associated with judicial rulings in favour of patients. By understanding the themes underlying these legal cases, we hope to highlight the main issues that lead to litigation in plastic surgery.

The Case for Publicly Funded Migraine Surgery in Canada.

The Case for Publicly Funded Migraine Surgery in Canada.

The effect of the COVID-19 pandemic on bariatric surgery delivery in Edmonton, Alberta: a single-centre experience.

SummaryDelays in the delivery of bariatric surgery in Canada in the context of the COVID-19 pandemic have not been previously explored. Understanding the potential barriers associated with these delays may help in the implementation and delivery of enhanced bariatric protocols, thereby minimizing health care system burden and improving bariatric delivery. We present the experience of a single high-volume, accredited bariatric program in Edmonton, Alberta, in 2020. Although reductions in bariatric cases occurred during lockdown months, the overall number of cases was comparable to 2019 owing to the adoption of strategies aimed at offsetting the burden of hospital resources. These strategies included optimizing patient selection, implementing bariatric Enhanced Recovery After Surgery protocols, and minimizing unnecessary postoperative investigations to allow most patients to be discharged on postoperative day 1. We advocate to continue optimizing bariatric delivery in the face of the COVID-19 pandemic that so disproportionally affects those with severe obesity and its metabolic complications.

Protocol for a multicenter randomized controlled trial comparing a non-opioid prescription to the standard of care for pain control following arthroscopic knee and shoulder surgery

BackgroundOpioids continue to be the analgesic of choice for postoperative pain control following arthroscopic knee and shoulder surgery. Despite their widespread use, there are limited evidence-based clinical practice guidelines for postoperative opioid prescribing. The Non-Opioid Prescriptions after Arthroscopic Surgery in Canada (NO PAin) Trial is a randomized controlled trial (RCT) designed to determine whether a non-opioid analgesia approach to postoperative pain, compared to usual care, reduces oral morphine equivalents (OME) consumed in patients undergoing outpatient knee and shoulder arthroscopy.MethodsThis is a multi-centre, RCT with a target sample size of 200 patients. Adult (18+ years of age) patients undergoing outpatient knee and shoulder arthroscopy will be randomized to a non-opioid postoperative protocol (intervention) or the current standard of care (control). The intervention will consist of a standardized non-opioid analgesic prescription, a limited rescue opioid prescription, and a patient education infographic. The control is defined as the treating surgeons’ pre-trial postoperative analgesic regimen. Exclusion criteria include chronic opioid use, concomitant open surgery, contraindications to the prescribed analgesics or ongoing workers compensation/litigation. The primary outcome is OMEs consumed at 6 weeks postoperatively. Secondary outcomes will include patient-reported pain and satisfaction, quantity of OMEs prescribed, number of opioid refills, and any adverse events up to 6 weeks postoperatively. Utilizing the intention to treat principle for all analyses, independent samples t-test and presented with a p-value as well as a mean difference (MD) with 95% confidence intervals (CIs) will be performed for primary and secondary outcomes.DiscussionThe ongoing opioid epidemic and overprescribing of opioids in orthopaedics serve as the rationale for this trial. There is a lack of evidence upon which to develop post-operative pain management guidelines for patients undergoing arthroscopic surgery. A prospective evaluation of this relatively inexpensive intervention will demonstrate whether an explicit effort to reduce the number of opioids prescribed results in a reduction in the amount of opioids consumed and help to inform future studies and guidelines.Trial registrationThe NO PAin trial has been prospectively registered with clinicaltrials.gov (NCT04566250).

Evolving Surgical Techniques and Improving Outcomes for Aortic Arch Surgery in Canada

BackgroundTo explore evolving surgical techniques and outcomes for aortic arch surgery. MethodsA total of 2435 consecutive patients underwent aortic arch repair with hypothermic circulatory arrest between 2008 and 2018 in 12 institutions across Canada. Trends in patient characteristics, surgical techniques, and in-hospital outcomes, including major morbidity or mortality, were examined. ResultsFrom 2008 to 2018, the age of patients (62.3 ± 13.2 years) and the proportion of women (30.2%) undergoing arch surgery did not change significantly. Aortic diameters at operation decreased (2008: 58 ± 13 mm; 2018: 53 ± 11 mm; P < 0.01). Surgeons performed more valve-sparing root replacements (2008: 0%; 2018: 15%; P < 0.001) and fewer Bentall procedures (2008: 27%; 2018: 20%; P < 0.01). Total arch replacement rates were similar (P = 0.18); however, elephant trunk (2008: 9.5%; 2018: 19%; P < 0.001) and frozen elephant trunk (2008: 3.1%; 2018: 15%; P < 0.001) repair rates have increased. Over time, higher nadir temperatures (2008: 18 [17-21]°C; 2018: 25 [23-28]°C; P < 0.001), and more frequent antegrade cerebral perfusion (2008: 61%; 2018: 83%; P < 0.001) were used. For elective cases, in-hospital mortality rates declined (2008: 6.8%; 2018: 1.2%; P = < 0.01), as did major morbidity or mortality (2008: 24%; 2018: 13%; P < 0.001) and transfusion rates (2008: 61%; 2018: 41%; P < 0.001), but stroke rates remained constant (2008: 6.8%; 2018: 5.3%; P = 0.12). Outcomes remained the same over time for urgent or emergent cases. ConclusionsOutcomes have improved over the past decade in Canada for elective aortic arch surgery, in the context of operating on smaller aortas, and more frequent use of moderate hypothermia and antegrade cerebral perfusion. Further research is needed to improve stroke rates and outcomes in the emergency setting.

Partial Breast Irradiation and Surgical Clip Usage for Tumor Bed Delineation After Breast-Conserving Surgery in Canada: A Radiation Oncology Perspective

PurposeOur purpose was to evaluate the usage and perceived benefit of surgical clips for breast radiation therapy planning in Canada, focusing on partial breast irradiation (PBI) after breast-conserving surgery. Methods and MaterialsA retrospective institutional review identified patients eligible for PBI based on clinicopathologic criteria, and tumor bed visualization was determined from computed tomography-planning scans. An online survey was subsequently distributed to Canadian radiation oncologists addressing the usage and added value of surgical clips for breast radiation therapy planning purposes. The survey also evaluated PBI usage and regimens. Responses were collected over a 4-week period. PBI regimen usage at our institution was also reviewed from May 1 to December 18, 2020. ResultsBased on clinicopathologic criteria, 306 patients were identified between 2013 and 2018 who were eligible for PBI. However, only 24% (72/306) of cases were noted to have surgical clips, of which over 50% did not assist in tumor bed localization due to inconsistent clip positioning. Similarly, nearly two-thirds (28/43) of survey respondents indicated that surgical clips are placed in the tumor bed in less than 50% of cases. Almost all respondents (42/43) indicated that surgical clips facilitate breast radiation therapy planning and favor the development of guidelines to increase the consistent placement of surgical clips in the tumor bed after breast-conserving surgery. Approximately two-thirds of respondents (28/43) offer PBI to eligible patients as routine treatment, with moderate hypofractionated regimens most commonly recommended. However, the 1-week daily regimen of 26 Gy in 5 fractions is now offered to the majority (77%) of patients at our institution. ConclusionsThere was strong agreement among Canadian radiation oncologists that surgical clip placement facilitates breast radiation therapy planning, and most favor the development of surgical guidelines for the consistent placement of surgical clips in this setting. With the growing use of PBI, accurate localization of the tumor bed is extremely important.