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1.
Pediatr Emerg Care ; 40(3): 214-217, 2024 Mar 01.
Article in English | MEDLINE | ID: mdl-37083691

ABSTRACT

OBJECTIVES: To determine the trend in incidence of pediatric magnet ingestions at 2 large Canadian tertiary pediatric hospitals after reintroduction of magnets to the US marketplace and to evaluate morbidity and mortality related to these ingestions. METHODS: This was a retrospective study performed in 2 tertiary care pediatric hospitals between 2004 and 2019. We reviewed the charts of all children who presented with a foreign body ingestion and included those with reported magnet ingestion. We characterized all events and compared the incidence rate before and after the US ban was overturned in 2016. Descriptive statistics were used to summarize our results. Incidence rate ratio was calculated using the total number of magnet ingestion cases and total emergency department visits normalized to 100,000 emergency department visits/year. RESULTS: We screened a total of 6586 ingestions and identified 192 patients with magnet ingestions. The period after the mandatory recall was compared with the period after the US ban revocation yielding an incidence rate ratio of 0.76 for all magnet ingestions ( P = 0.15) and 0.73 ( P = 0.34) for multiple magnet ingestions. There was, however, a graphical upward trend that immediately followed the US ban revocation. Sixty-nine patients (36%) were admitted to the hospital and 45 (23%) required a procedure to remove the magnet ingested. No deaths occurred. CONCLUSIONS: Our findings suggest that the overturning of the US ban did not lead to a significant increase in the incidence of rare earth magnet ingestion in 2 large tertiary pediatric hospitals in Canada despite noting a trend upwards.


Subject(s)
Foreign Bodies , Magnets , Child , Humans , Hospitals, Pediatric , Retrospective Studies , Canada/epidemiology , Foreign Bodies/epidemiology , Foreign Bodies/therapy , Eating
2.
Can J Surg ; 66(4): E439-E447, 2023.
Article in English | MEDLINE | ID: mdl-37643797

ABSTRACT

BACKGROUND: Recruiting residents to practise rurally begins with an accurate characterization of rural surgeons. We sought to identify and analyze demographic trends among rural surgeons in Canada and to predict the rural workforce requirements for the next decade. METHODS: In this retrospective observational study, we assessed the demographic and practice characteristics of rural general surgeons in Canada, defined as surgeons working in cities with a population of 100 000 or less. Surgeons were identified using the websites of provincial colleges of physicians and surgeons. Demographic characteristics included year and country of medical degree achievement, fellowship status and primary practice location. We developed a model predicting future rural workforce requirements based on the following assumptions: that the current ratio of rural surgeons to rural patients is adequate, that the rural population will increase by 1.1% annually, that a rural surgeon's career length is 36 years, and that 85 graduates will enter the workforce annually. RESULTS: Our study sample included 760 rural general surgeons. The majority graduated after 1989 (75%), were Canadian medical graduates (73%) and did not complete a fellowship (82%). There was a significant shift toward rural surgeons being trained in Canada, from 37% of surgeons graduating before 1969 to 91% of those graduating after 2009 (p < 0.001). Modelling predicts 282 rural general surgeons will retire by 2031, with 88 new surgeons needed to account for the population growth. Therefore, we predict a demand for 370 rural surgeons over the next decade, meaning 43% of general surgery graduates will need to enter rural practice. CONCLUSION: Rural general surgeons in Canada vary widely in their background demographic characteristics. Future opportunities in rural general surgery are projected to increase. Recruitment and training of general surgery graduates to serve Canada's rural communities remains essential.


Subject(s)
Rural Population , Surgeons , Humans , Canada , Fellowships and Scholarships , Retirement
3.
Can J Surg ; 66(4): E409-E410, 2023.
Article in English | MEDLINE | ID: mdl-37500106

ABSTRACT

A pioneer in multiple areas of biochemical research, Desmond Beall made important contributions to Canadian medical history. His legacy laid the foundation for several modern scientific advances, extending from his doctoral work in Toronto on equine estrogen (which led to the development of conjugated estrogens) to landmark work on rhabdomyolysis during World War II. Though some theoretical understanding of the pathophysiology of traumatic rhabdomyolysis existed previously, Beall and his colleague Eric Bywaters substantially advanced this field of study with their publications on patients treated during the 1940 Blitz bombings. After the war, Beall shifted to working in industry and was able to translate his scientific advances into products affecting the lives of patients worldwide. Drawing from published works and personal communications with family members, this article is a memorial to a remarkable yet relatively unknown scientist.


Subject(s)
Rhabdomyolysis , Humans , Animals , Horses , History, 20th Century , Canada , Rhabdomyolysis/etiology
4.
World J Surg ; 47(10): 2340-2346, 2023 10.
Article in English | MEDLINE | ID: mdl-37389644

ABSTRACT

BACKGROUND: Accurately predicting which patients are most likely to benefit from massive transfusion protocol (MTP) activation may help patients while saving blood products and limiting cost. The purpose of this study is to explore the use of modern machine learning (ML) methods to develop and validate a model that can accurately predict the need for massive blood transfusion (MBT). METHODS: The institutional trauma registry was used to identify all trauma team activation cases between June 2015 and August 2019. We used an ML framework to explore multiple ML methods including logistic regression with forward and backward selection, logistic regression with lasso and ridge regularization, support vector machines (SVM), decision tree, random forest, naive Bayes, XGBoost, AdaBoost, and neural networks. Each model was then assessed using sensitivity, specificity, positive predictive value, and negative predictive value. Model performance was compared to that of existing scores including the Assessment of Blood Consumption (ABC) and the Revised Assessment of Bleeding and Transfusion (RABT). RESULTS: A total of 2438 patients were included in the study, with 4.9% receiving MBT. All models besides decision tree and SVM attained an area under the curve (AUC) of above 0.75 (range: 0.75-0.83). Most of the ML models have higher sensitivity (0.55-0.83) than the ABC and RABT score (0.36 and 0.55, respectively) while maintaining comparable specificity (0.75-0.81; ABC 0.80 and RABT 0.83). CONCLUSIONS: Our ML models performed better than existing scores. Implementing an ML model in mobile computing devices or electronic health record has the potential to improve the usability.


Subject(s)
Blood Transfusion , Hemorrhage , Humans , Bayes Theorem , Hemorrhage/diagnosis , Hemorrhage/etiology , Hemorrhage/therapy , Blood Transfusion/methods , Predictive Value of Tests , Machine Learning
5.
J Pediatr Surg ; 58(7): 1351-1356, 2023 Jul.
Article in English | MEDLINE | ID: mdl-36934002

ABSTRACT

BACKGROUND: Graduate and fellowship training trends for Canadian pediatric surgeons remain uncharacterized. Similarly, updated workforce planning for pediatric surgeons is required. We aimed to characterize graduate degree and fellowship trends for Canadian pediatric surgeons, with modelling to inform workforce planning. METHODS: We performed a cross sectional observational study evaluating Canadian pediatric surgeons in January 2022. Surgeon demographics collected included year of medical degree (MD) conferment, MD location, fellowship location, and graduate degree achievement. Our primary outcome was to evaluate training characteristics over time. Secondary outcomes evaluated surgeon supply and demand from 2021 to 2031. Supply was extrapolated from current Canadian pediatric surgery fellows assuming static fellowship matriculation, while retirement was estimated using a 31-, 36-, or 41-year career following MD conferral. RESULTS: Of included surgeons (n = 77), 64 (83%) completed fellowship training in Canada and 46 (60%) have graduate degrees. No surgeons graduating ≤1980 hold graduate degrees, compared to 8 (100%) surgeons with MD ≥ 2011 (p < 0.001). Similarly, more surgeons with MD ≥ 2011 appear to have a Canadian MD (n = 7, 87.5%) and Canadian fellowship (n = 8, 100%). Modelling predicts that 19-49 (25%-64%) surgeons will retire between 2021 and 2031, while 37 fellows will graduate with intention to work in Canada, creating between a 12 surgeon deficit up to an 18 surgeon surplus depending on career length. CONCLUSIONS: Trends in graduate degree achievement and fellowship location suggest increasing competition for Canadian pediatric surgery positions. Additionally, a substantial number of Canadian-trained fellows will need positions outside of Canada in the next decade. Overall, results support previous work demonstrating saturation of the Canadian pediatric workforce. LEVEL OF EVIDENCE: Level IV. ACGME COMPETENCY ADDRESSED: Medical Knowledge.


Subject(s)
Specialties, Surgical , Surgeons , Humans , Child , Cross-Sectional Studies , Canada , Specialties, Surgical/education , Workforce , Education, Medical, Graduate , Fellowships and Scholarships
6.
Am J Surg ; 225(6): 1022-1028, 2023 06.
Article in English | MEDLINE | ID: mdl-36526454

ABSTRACT

BACKGROUND: Hepato-pancreatico-biliary (HPB) patients experience competing risk of venous thromboembolism (VTE) and bleeding. We sought to evaluate the effect of anti-Xa levels on VTE and bleeding, and to characterize factors associated with subprophylaxis. METHODS: This prospective cohort study evaluated adult HPB surgical patients; cohorts were described by anti-Xa levels as subprophylactic (<0.2 IU/mL), prophylactic (0.2-0.5 IU/mL), and supraprophylactic (>0.5 IU/mL). Primary outcome evaluated bleeding and VTE complications. Secondary outcomes evaluated factors associated with subprophylaxis. RESULTS: We included 157 patients: 68 (43.6%) attained prophylactic anti-Xa and 89 (56.7%) were subprophylactic. Subprophylactic patients experienced more VTE compared to prophylactic patients (6.9% vs 0%; p = 0.028) without differences in bleeding complications (14.6% vs 5.9%; p = 0.081). Factors associated with subprophylactic anti-Xa included female sex (OR 2.90, p = 0.008), and Caprini score (OR 1.30, p = 0.035). Enoxaparin was protective against subprophylaxis compared to tinzaparin (OR 0.43, p = 0.029). CONCLUSIONS: Many HPB patients have subprophylactic anti-Xa levels, placing them at risk of VTE. Enoxaparin may be preferential, however, studies evaluating optimized prophylaxis are needed.


Subject(s)
Enoxaparin , Heparin, Low-Molecular-Weight , Venous Thromboembolism , Adult , Female , Humans , Anticoagulants/therapeutic use , Enoxaparin/therapeutic use , Hemorrhage/complications , Heparin, Low-Molecular-Weight/therapeutic use , Prospective Studies , Venous Thromboembolism/etiology , Venous Thromboembolism/prevention & control
7.
J Surg Educ ; 80(4): 520-527, 2023 04.
Article in English | MEDLINE | ID: mdl-36581542

ABSTRACT

OBJECTIVE: Better understanding the research productivity of Canadian general surgery residents and factors associated with success would provide a valuable reference and help inform actions to enable success. We aimed to characterize the research productivity of Canadian general surgery residents and to evaluate factors associated with residents' research quantity and impact. DESIGN: A cross-sectional, observational study was performed using publicly available data evaluating Canadian General Surgery resident research productivity. Research productivity was characterized using measures including publications per postgraduate year (PGY) and CiteScore among others. Residency programs were then comparatively assessed using a multivariable logistic regression to evaluate program and resident factors associated with achieving >50th percentile research productivity. SETTING AND PARTICIPANTS: All General Surgery residents from English speaking Canadian training programs were included in this study, which was completed at the University of Alberta, a tertiary level academic center in Edmonton, Canada. RESULTS: A wide range of resident research productivity was observed across Canada with the median publications per PGY of 0.29, and the median sum of a resident's publication CiteScores of 2.05. The median h-index was 0.90. Graduate degree completion and publication experience prior to residency were significantly associated with higher publications per PGY (OR 2.94 and OR 2.10, respectively), as well as higher mean CiteScore (OR 3.42 and 2.24). The program factors that were assessed, including program size, research blocks, mandatory projects, or higher staff research productivity, did not show significant association with increased research output. CONCLUSIONS: There is a wide range in research output by general surgery residents across the country. Successful completion of graduate degrees and the experience of publication prior to residency are associated with higher research productivity and impact.


Subject(s)
General Surgery , Internship and Residency , Humans , Education, Medical, Graduate , Canada , Cross-Sectional Studies , Efficiency , General Surgery/education
8.
J Trauma Acute Care Surg ; 93(6): 813-820, 2022 12 01.
Article in English | MEDLINE | ID: mdl-35972141

ABSTRACT

BACKGROUND: Optimal management of bile leaks (BLs) after severe liver injury is unknown. Study objectives were to define current practices in diagnosis and management of BL to determine which patients may benefit from endoscopic retrograde cholangiopancreatography (ERCP). METHODS: American Association for the Surgery of Trauma grade ≥III liver injuries from 10 North American trauma centers were included in this retrospective study (February 2011 to January 2021). Groups were defined as patients who developed BL versus those who did not. Subgroup analysis of BL patients was performed by management strategy. Bivariate analysis compared demographics, clinical/injury data, and outcomes. Receiver operating characteristic curves were performed to investigate the relationship between bilious drain output and ERCP. RESULTS: A total of 2,225 patients with severe liver injury met the study criteria, with 108 BLs (5%). Bile leak patients had higher American Association for the Surgery of Trauma grade of liver injury ( p < 0.001) and were more likely to have been managed operatively from the outset (69% vs. 25%, p < 0.001). Bile leak was typically diagnosed on hospital day 6 [4-10] via surgical drain output (n = 37 [39%]) and computed tomography scan (n = 34 [36%]). On the BL diagnosis day, drain output was 270 [125-555] mL. Endoscopic retrograde cholangiopancreatography was the most frequent management strategy (n = 59 [55%]), although 32 patients (30%) were managed with external drains alone. Bile leak patients who underwent ERCP, surgery, or percutaneous transhepatic biliary drain had higher drain output than BL patients who were managed with external drains alone (320 [180-720] vs. 138 [85-330] mL, p = 0.010). Receiver operating characteristic curve analysis of BL demonstrated moderate accuracy (area under the receiver operating characteristic curve, 0.636) for ERCP at a cutoff point of 390 mL of bilious output on the day of diagnosis. CONCLUSION: Patients with BL >300 to 400 mL were most likely to undergo ERCP, percutaneous transhepatic biliary drain, or surgical management. Once external drainage of BL has been established, we recommend ERCP be reserved for patients with BL >300 mL of daily output. Prospective multicenter examination will be required to validate these retrospective data. LEVEL OF EVIDENCE: Therapeutic and Care Management; Level IV.


Subject(s)
Bile , Cholangiopancreatography, Endoscopic Retrograde , Humans , Retrospective Studies , Prospective Studies , Cholangiopancreatography, Endoscopic Retrograde/methods , Liver/injuries , Drainage/methods
9.
J Trauma Acute Care Surg ; 93(4): e143-e146, 2022 10 01.
Article in English | MEDLINE | ID: mdl-35777976

ABSTRACT

ABSTRACT: The associate membership of the American Association for the Surgery of Trauma (AAST) was established in 2019 to create a defined but incorporated entity within the larger AAST for the next generation of acute care surgeons. The Associate Member Council (AMC) was subsequently established in 2020 to provide the new AM with an elected group of leaders who would represent them within the AAST. In its inaugural year, this cohort of junior faculty and surgical trainees had developed for the AM a set of bylaws, a mission statement, a strategic vision, and a succession plan. The experience of the AAST AMC is exemplary of what can be accomplished with collaboration, mentorship, innovation, and tenacity. It has the potential to serve as a template for the creation and vitalization of future professional groups. In this piece, the AMC proposes a blueprint for the successful conception of a new organization.


Subject(s)
Surgeons , Critical Care , Humans , Retrospective Studies , Severity of Illness Index , United States
10.
J Trauma Acute Care Surg ; 93(2): e61-e70, 2022 08 01.
Article in English | MEDLINE | ID: mdl-35195094

ABSTRACT

BACKGROUND: Trauma patients have simultaneously high venous thromboembolism (VTE) and bleeding risk. Optimal chemoprophylaxis regimens remain unclear. This study aims to answer three questions for trauma patients. Is there any association between anti-Xa and VTE? Does dose adjustment improve prophylactic anti-Xa rates? Does dose adjustment improve anti-Xa adequacy and VTE compared with standard dosing? METHODS: Systematic search of MEDLINE, Embase, Scopus, and Web of Science occurred in May 2021. Two author reviews included trauma studies that evaluated low molecular weight heparin chemoprophylaxis, reported anti-Xa level, and evaluated more than one outcome. Data were dually extracted and estimated effects were calculated using RevMan 5.4 applying the Mantel-Haenszel method. Analysis 1 compared patients with peak anti-Xa of 0.2 IU/mL or greater or trough 0.1 IU/mL or greater to those with lower anti-Xa using VTE as the primary outcome. Analysis 2 reported the effect of dose adjustment on anti-Xa. Analysis 3 compared standard dosing to dose adjustment with the primary outcome being anti-Xa adequacy; secondary outcomes were VTE, pulmonary embolism, and bleeding complications. RESULTS: There were 3,401 studies evaluated with 24 being included (19 retrospective studies, 5 prospective studies). In analysis 1, achieving adequate anti-Xa was associated with reduced odds of VTE (4.0% to 3.1%; odds ratio [OR], 0.52; p = 0.03). Analysis 2 demonstrated that 768 (75.3%) patients achieved prophylactic anti-Xa with adjustment protocols. Analysis 3 suggested that dose-adjusted chemoprophylaxis achieves prophylactic anti-Xa more frequently (OR, 4.05; p = 0.007) but without VTE (OR, 0.72; p = 0.15) or pulmonary embolism (OR, 0.48; p = 0.10) differences. In subgroup analysis, anti-Xa dose adjustment also suggested no VTE reduction (OR, 0.68; p = 0.08). CONCLUSION: Patients with higher anti-Xa levels are less likely to experience VTE, and anti-Xa guided chemoprophylaxis increases anti-Xa adequacy. However, dose adjustment, including anti-Xa guided dosing, may not reduce VTE. LEVEL OF EVIDENCE: Systematic Review Meta-Analysis, Level IV.


Subject(s)
Pulmonary Embolism , Venous Thromboembolism , Anticoagulants/therapeutic use , Enoxaparin , Heparin, Low-Molecular-Weight/therapeutic use , Humans , Molecular Weight , Prospective Studies , Pulmonary Embolism/complications , Pulmonary Embolism/prevention & control , Retrospective Studies , Venous Thromboembolism/etiology , Venous Thromboembolism/prevention & control
11.
J Trauma Acute Care Surg ; 92(6): 1039-1046, 2022 06 01.
Article in English | MEDLINE | ID: mdl-35081597

ABSTRACT

BACKGROUND: The management of destructive colon injuries requiring resection has shifted from mandatory diverting stoma to liberal use of primary anastomosis. Various risk criteria have been suggested for the selection of patients for primary anastomosis or ostomy. At our center, we have been practicing a policy of liberal primary anastomosis irrespective of risk factors. The purpose of this study was to evaluate the colon-related outcomes in patients managed with this policy. METHODS: This retrospective study included all colon injuries requiring resection. Data collected included patient demographics, injury characteristics, blood transfusions, operative findings, operations performed, complications, and mortality. RESULTS: A total of 287 colon injuries were identified, 101 of whom required resection, forming the study population. The majority (63.4%) were penetrating injuries. Furthermore, 16.8% were hypotensive on admission, 40.6% had moderate or severe fecal spillage, 35.6% received blood transfusion of >4 U, and 41.6% had Injury Severity Score of >15. At index operation, 88% were managed with primary anastomosis and 12% with colon discontinuity, and one patient had stoma. Damage-control laparotomy (DCL) with temporary abdominal closure was performed in 39.6% of patients. Of these patients with DCL, 67.5% underwent primary anastomosis, 30.0% were left with colon discontinuity, and 2.5% had stoma. Overall, after the definitive management of the colon, including those patients who were initially left in colon discontinuity, only six patients (5.9%) had a stoma. The incidence of anastomotic leaks in patients with primary anastomosis at the index operation was 8.0%, and there was no colon-related mortality. The incidence of colon anastomotic leaks in the 27 patients with DCL and primary anastomosis was 11.1%, and there was no colon-related mortality. Multivariate analysis evaluating possible risk factors identified discontinuity of the colon as independent risk factor for mortality. CONCLUSION: Liberal primary anastomosis should be considered in almost all patients with destructive colon injuries requiring resection, irrespective of risk factors. LEVEL OF EVIDENCE: Therapeutic/Care Management; Level IV.


Subject(s)
Abdominal Injuries , Thoracic Injuries , Abdominal Injuries/surgery , Anastomosis, Surgical , Anastomotic Leak , Colon/injuries , Colon/surgery , Colostomy , Humans , Retrospective Studies , Thoracic Injuries/etiology , Treatment Outcome
12.
Eur J Trauma Emerg Surg ; 48(1): 481-488, 2022 Feb.
Article in English | MEDLINE | ID: mdl-32567022

ABSTRACT

PURPOSE: Penetrating injuries to the vertebral artery are rare and incompletely studied. Operative, angioembolic, and nonoperative strategies are management options, although the association between management strategy and outcomes is unknown. This study endeavored to define the epidemiology, management strategy, and outcomes after penetrating injuries to the vertebral artery presenting to trauma centers nationwide. METHODS: Patients with veterbral artery injuries were identified from the National Trauma Data Bank (NTDB) (2016-2017) using ICD-10-CM codes. Only those with penetrating mechanisms of injury were included in the study. Transferred patients were excluded. Study groups were defined by management strategy (Operative management, OM; angioembolization, AE; and nonoperative management, NOM). Patient demographics, injury characteristics, and outcomes were compared between groups using univariate analysis. Multivariate analysis with logistic regression was used to examine independent risk factors for mortality and stroke. RESULTS: Penetrating injuries to the vertebral artery were rare (n = 476, < 1% of NTDB patient population). Median age was 28 [IQR 21-37] years and 81% (n = 385) of patients were male. Interpersonal violence was the most common injury intent (n = 374, 79%). Most patients were managed with NOM (n = 409, 86%), with AE and OM utilized less frequently (8% and 6%, respectively). Stab wounds were the most frequent mechanism of injury among patients managed with OM (62%), while gunshot wounds were most common among patients managed with NOM (84%) or AE (79%). Multivariate analysis of risk factors for stroke revealed only associated carotid artery injury (OR 4.236, 95% CI 1.284-13.970, p = 0.018) and AE (OR 6.342, 95% CI 1.417-28.399, p = 0.016) were independent predictors. Independent risk factors for mortality were advanced age (OR 1.026, 95% CI 1.001-1.052, p = 0.044); elevated ISS (OR 1.030, 95% CI 1.008-1.052, p = 0.006); and associated traumatic brain injury (OR 3.020, 95% CI 1.333-6.843, p = 0.008). Higher ED GCS was independently associated with reduced mortality (OR 0.788, 95% CI 0.731-0.849, p < 0.001). CONCLUSIONS: Vertebral artery injuries after penetrating mechanisms are infrequent in the United States. Patients with these injuries tend to be young adult men who were injured by gunshot wounds as a result of interpersonal violence. The majority of these injuries were managed nonoperatively, with operative intervention required most commonly for patients injured by stab wounds. Risk factors for both stroke and mortality were principally due to patient factors and associated injuries. Increased risk of stroke among patients managed with angioembolization will need to be further investigated with future study to determine if this risk is imparted from the management strategy itself or from underlying injury characteristics.


Subject(s)
Wounds, Gunshot , Wounds, Penetrating , Adult , Humans , Injury Severity Score , Male , Retrospective Studies , Trauma Centers , United States/epidemiology , Vertebral Artery/injuries , Wounds, Gunshot/epidemiology , Wounds, Gunshot/therapy , Wounds, Penetrating/epidemiology , Wounds, Penetrating/therapy , Young Adult
14.
Clin Neuroradiol ; 31(1): 79-87, 2021 Mar.
Article in English | MEDLINE | ID: mdl-31696280

ABSTRACT

BACKGROUND AND PURPOSE: The GestSure system is an Food and Drugs Administration (FDA)-registered depth-sensing infrared device initially developed for touchless image navigation during open surgery. The goal of this study was to explore the feasibility of this technology with medical students, residents, fellows and staff neurointerventionalists, using cases of intracranial aneurysm coiling. MATERIAL AND METHODS: This was a prospective cohort study of operative performance using standard keyboard and mouse against a gestural interface. A total of four medical students, six residents, six fellows and five staff neurointerventionalists were involved in the training and subsequent testing. Training involved description and demonstration of a set of gestures optimized for 3D software functions. Cases were selected from the set of patients who underwent endovascular aneurysm coiling at the Toronto Western Hospital. RESULTS AND CONCLUSION: For the overall group 15/21 (71.4%) individuals learned the left anterior oblique 30 degrees (LAO30) task within 20 cases, 17/21 (80.9%) learned the aneurysm neck task within 20 cases, 16/21 (76.2%) learned the parent vessel task and 14/21 (66%) learned the neck and parent vessel (anatomical) tasks. Staff were more consistent (i.e. smallest standard deviation) amongst the groups compared to medical students and residents; however, it was noted that a significant learning effect was observed in participants across every level of medical and angiographic expertise. Touchless angiography suite control with a gestural interface is feasible for the manipulation of angiographic images for neuroendovascular procedures. Learning to use the system was rapid across any level of medical training but greatest for staff neurointerventionalists.


Subject(s)
Aortic Aneurysm, Abdominal , Blood Vessel Prosthesis Implantation , Endovascular Procedures , Intracranial Aneurysm , Angiography , Computers , Humans , Intracranial Aneurysm/diagnostic imaging , Intracranial Aneurysm/surgery , Prospective Studies , Treatment Outcome , User-Computer Interface
15.
Mediastinum ; 5: 25, 2021.
Article in English | MEDLINE | ID: mdl-35118330

ABSTRACT

Penetrating transmediastinal injury (TMI) is associated with a high mortality rate and presents a challenging diagnostic scenario. Previous dogma mandated surgical exploration or extensive and invasive investigations for all patients sustaining transmediastinal penetrating trauma, regardless of hemodynamic status. Since the late 1990s, the paradigm has changed, with most centers adopting a tiered approach to management based on clinical presentation. Transmediastinal penetrating trauma is a rare injury pattern and can result from gunshot wounds, stab wounds, blast injuries, and other missiles. The most predominant source, however, remains gunshot wounds, accounting for the vast majority of these injuries. A systematic approach in the emergency department to diagnosis and management should be undertaken and patients in extremis or with hemodynamic compromise rapidly identified. The unstable patient forgoes further investigations and the surgeon must use knowledge about the hypothesized trajectory, results of limited imaging, chest tube output, and anticipation of resuscitative maneuvers to select the best operative approach. In patients who are sufficiently stable to undergo CT angiogram (CTA) of the chest, the trajectory of the missile or impalement can often be deduced and this is used to guide further investigation or operation. In those where ambiguity remains, more focused tests such as echocardiography, pericardial window, esophagoscopy or esophagography, and bronchoscopy can be used to assess the mediastinal structures. For the stable patient, management proceeds with cautious and expeditious investigations to determine the extent of underlying organ-specific injuries. Thus, in patients with this injury pattern, determination of the patient's clinical status is critical to determine the appropriate course of management.

16.
J Emerg Med ; 58(6): 902-909, 2020 Jun.
Article in English | MEDLINE | ID: mdl-32317194

ABSTRACT

BACKGROUND: Injuries from multiple magnet ingestions in the pediatric population have been increasing in both incidence and morbidity. This trend will likely continue after a 2017 court ruling that overturned a ban on the sale of magnet sets marketed as "adult desk toys." Depending on the arrangement of the ingested magnets in the gastrointestinal tract, the consequences can range from benign to life threatening. OBJECTIVE: This review of cases aims to help clinicians recognize this pathology and help them appreciate the unique management of this type of foreign body ingestion. DISCUSSION: Several cases are presented that individually illustrate an arm of the most comprehensive management algorithm, proposed by the North American Society for Pediatric Gastroenterology, Hepatology, and Nutrition. The management is largely driven by the clinical appearance of the child as well as information obtained through abdominal radiographs. Imaging variables that factor into management include the location of the magnets, the number of magnets, and the progression of magnets on serial radiographs. CONCLUSION: This article uses cases and illustrative medical imaging to describe the most common scenarios and their management. This is especially relevant considering recent U.S. court rulings that overturned the U.S. Consumer Product Safety Commission's ban on the sale of toys containing multiple miniature magnets.


Subject(s)
Foreign Bodies , Magnets , Child , Eating , Foreign Bodies/diagnostic imaging , Gastrointestinal Tract , Humans , Magnets/adverse effects , Play and Playthings , Retrospective Studies
18.
Surgery ; 166(5): 726-734, 2019 11.
Article in English | MEDLINE | ID: mdl-31280867

ABSTRACT

BACKGROUND: Several models have been introduced to improve and restructure surgical training, but continued barriers exist. Residents are uniquely positioned to offer perspective on practical challenges and needs of reformatting surgical education. This study aimed to establish a nationwide, Delphi consensus statement on the perceptions of Canadian residents regarding the future of general surgery training. METHODS: Canadian general surgery residents participated in a moderated focus group using the Nominal Group Technique to discuss early subspecialization, competency-based medical education, and transition to practice. Qualitative verbal data were transcribed, categorized into themes, and synthesized into recommendation statements. During an iterative Delphi survey, resident leaders ranked each statement on a 5-point Likert scale of agreement. The survey was terminated once consensus was achieved (≥2 survey rounds and Cronbach's α ≥ 0.80). RESULTS: A total of 66 statements were synthesized by 16 members of the Canadian Association of General Surgeons Resident Committee. A total of 49 residents participated in the Delphi consensus, which was achieved after 2 voting rounds (Cronbach's α = 0.93). Participants agreed that (1) residency should focus on achieving standardized competencies and milestones based on resident ability to meet specific measurable metrics, (2) early streaming should be offered after "core" milestones and competencies have been achieved, and (3) an explicit period should allow transition-to-independent practice with tailored rotations, greater autonomy, and resident-run clinics. We identified 10 barriers to competency-based medical education implementation. CONCLUSION: A nationwide consensus regarding the future of surgical training was established among current residents. These findings can inform and help implement guidelines and national curricula that meet the needs of the trainee and address the many challenges they face during their training.


Subject(s)
Competency-Based Education/trends , Consensus , General Surgery/education , Internship and Residency/trends , Models, Educational , Adult , Canada , Clinical Competence , Competency-Based Education/methods , Delphi Technique , Female , Focus Groups , Humans , Internship and Residency/methods , Male , Qualitative Research , Surgeons/education
19.
Can J Surg ; 61(2): 82-84, 2018 04.
Article in English | MEDLINE | ID: mdl-29582741

ABSTRACT

SUMMARY: The topic of unemployment and underemployment of Canadian general surgeons is being discussed more frequently despite relatively little evidence on the magnitude or impact of the problem. Using existing and new sources of health human resource data, a more accurate understanding of the situation can be attained. Although outright surgeon unemployment is rare, there is a population of dissatisfied new graduates who feel cornered into underemployment or locums. The number of practising general surgeons has outpaced population growth in recent years. However, the number of new trainees peaked in 2010 and has been decreasing steadily since then. There are many pressures that stand in the way of more accurate management of the general surgery workforce. A better understanding of the subject and better leadership at the national level may help improve system performance.


Subject(s)
Employment/statistics & numerical data , Surgeons/statistics & numerical data , Canada , Humans , Unemployment/statistics & numerical data
20.
J Arthroplasty ; 32(11): 3268-3273.e4, 2017 11.
Article in English | MEDLINE | ID: mdl-28669568

ABSTRACT

BACKGROUND: The Medicare program has initiated Comprehensive Care for Joint Replacement (CJR), a bundled payment mandate for lower extremity joint replacements. We sought to determine the degree to which hospitals will invest in care redesign in response to CJR, and to project its economic impacts. METHODS: We defined 4 potential hospital management strategies to address CJR: no action, light care management, heavy care management, and heavy care management with contracting. For each of 798 hospitals included in CJR, we used hospital-specific volume, cost, and quality data to determine the hospital's economically dominant strategy. We aggregated data to assess the percentage of hospitals pursuing each strategy; savings to the health care system; and costs and percentages of CJR-derived revenues gained or lost for Medicare, hospitals, and postacute care facilities. RESULTS: In the model, 83.1% of hospitals (range 55.0%-100.0%) were expected to take no action in response to CJR, and 16.1% of hospitals (range 0.0%-45.0%) were expected to pursue heavy care management with contracting. Overall, CJR is projected to reduce health care expenditures by 0.5% (range 0.0%-4.1%) or $14 million (range $0-$119 million). Medicare is expected to save 2.2% (range 2.2%-2.2%), hospitals are projected to lose 3.7% (range 4.7% loss to 3.8% gain), and postacute care facilities are expected to lose 6.5% (range 0.0%-12.8%). Hospital administrative costs are projected to increase by $63 million (range $0-$148 million). CONCLUSION: CJR is projected to have a negligible impact on total health care expenditures for lower extremity joint replacements. Further research will be required to assess the actual care management strategies adopted by CJR hospitals.


Subject(s)
Arthroplasty, Replacement/economics , Medicare/economics , Models, Economic , Patient Care Bundles/economics , Comprehensive Health Care , Economics, Hospital , Health Expenditures , Hospital Costs , Hospitals , Humans , United States
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