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1.
Perspect Med Educ ; 13(1): 201-223, 2024.
Article in English | MEDLINE | ID: mdl-38525203

ABSTRACT

Postgraduate medical education is an essential societal enterprise that prepares highly skilled physicians for the health workforce. In recent years, PGME systems have been criticized worldwide for problems with variable graduate abilities, concerns about patient safety, and issues with teaching and assessment methods. In response, competency based medical education approaches, with an emphasis on graduate outcomes, have been proposed as the direction for 21st century health profession education. However, there are few published models of large-scale implementation of these approaches. We describe the rationale and design for a national, time-variable competency-based multi-specialty system for postgraduate medical education called Competence by Design. Fourteen innovations were bundled to create this new system, using the Van Melle Core Components of competency based medical education as the basis for the transformation. The successful execution of this transformational training system shows competency based medical education can be implemented at scale. The lessons learned in the early implementation of Competence by Design can inform competency based medical education innovation efforts across professions worldwide.


Subject(s)
Education, Medical , Medicine , Humans , Competency-Based Education/methods , Education, Medical/methods , Clinical Competence , Publications
2.
Chest ; 165(2): e49-e56, 2024 Feb.
Article in English | MEDLINE | ID: mdl-38336444

ABSTRACT

CASE PRESENTATION: A 48-year-old woman presented to the ED with a nonproductive cough, shortness of breath, and stridor. She was otherwise healthy and had never used tobacco. The patient was mildly tachycardic but otherwise hemodynamically stable, afebrile, and saturating well on room air. She did not display any signs of increased work of breathing at rest. Although auscultation of her thorax indicated good air entry bilaterally without any adventitious sounds, stridor was elicited with forced expiration.


Subject(s)
Dyspnea , Respiratory Sounds , Humans , Female , Middle Aged , Respiratory Sounds/etiology , Dyspnea/diagnosis , Dyspnea/etiology , Cough/diagnosis , Cough/etiology
4.
Comp Immunol Microbiol Infect Dis ; 101: 102053, 2023 Oct.
Article in English | MEDLINE | ID: mdl-37672958

ABSTRACT

Bovine leukemia virus (BLV) is a major cause of lymphoma in cattle and has been recently correlated to breast cancer in humans. How and whether BLV might reach humans remains unknown but it could be through cattle-derived milk and meat. Here our aim was to investigate whether BLV DNA could be found in fresh milk and raw meat destined to human consumption and whether anti-BLV antibodies could be detected in human blood at the same geographical region. Milk (n = 36) and meat (n = 54) samples were collected from cows knowingly seropositive or negative to BLV and evaluated by nested PCR targeting BLV tax gene. Human serum samples (n = 900) were tested by ELISA to detect anti-BLV antibodies. BLV DNA was detected in 39 % of the milk samples and in 32 % of meat samples from BLV positive cows. Anti-BLV antibodies were found in 4.1 % of the human serum samples. Our data further supports the hypothesis that BLV might cause a zoonotic infection and indicate that milk and meat from BLV-infected cattle might be considered a potential source of infection to humans.

6.
BMC Pulm Med ; 23(1): 114, 2023 Apr 11.
Article in English | MEDLINE | ID: mdl-37041499

ABSTRACT

BACKGROUND: Idiopathic pulmonary fibrosis is thought to result from aberrant post-injury activation of epithelial cells leading to fibroblast proliferation and activation. A number of genetic aetiologies have been implicated in this disease process, including, among others, the short telomere syndromes. Short telomere syndromes follow an autosomal dominant pattern of inheritance resulting in shortened telomere length, which consequently leads to accelerated cell death. Organs with rapid cell turnover are most affected. CASE PRESENTATION: We describe a case of a 53-year-old man with a chief complaint of cough and dyspnea on exertion. His presentation was otherwise significant for features of accelerated aging, including a history of osteoporosis and early greying, and a family history of pulmonary fibrosis in his father. Pulmonary function testing revealed a restrictive pattern with severely reduced diffusion capacity and high resolution CT of the chest showed diffuse lung disease with mild fibrosis, in pattern suggesting an alternative diagnosis to IPF. Biopsy of the lung was in keeping with chronic fibrosing interstitial pneumonia. Imaging of the abdomen showed splenomegaly, hepatic cirrhosis and portal hypertension. Transthoracic contrast echocardiogram showed intrapulmonary shunting consistent with hepatopulmonary syndrome. Given the constellation of early aging, idiopathic pulmonary fibrosis, cryptogenic cirrhosis and a family history of pulmonary fibrosis in this patient, the Short Telomere Syndrome was suspected. Peripheral blood was sent for Flow-cytometry FISH, which demonstrated granulocyte telomere length below the 10th percentile for the patient's age, consistent with a diagnosis of Short Telomere Syndrome in this clinical context. Targeted genetic testing of mutations known to be associated with short telomere was negative though it was acknowledged that the full spectrum of disease-causing mutations remains unknown. Given the extensive fibrosis on biopsy and his progressive hypoxemia he was treated with mycophenolate and prednisone. Ultimately, he developed progressive respiratory failure and underwent double lung and concurrent liver transplant 18 months after the initial diagnosis was made. CONCLUSIONS: Short Telomere Syndrome is a rare cause of end stage organ disease and testing lacks sensitivity making diagnosis challenging. Organ transplant is still the mainstay of treatment. Nevertheless, disease identification is important because of implications for family member screening and the possibility of future treatment options.


Subject(s)
Hepatopulmonary Syndrome , Idiopathic Pulmonary Fibrosis , Lung Diseases, Interstitial , Male , Humans , Hepatopulmonary Syndrome/complications , Hepatopulmonary Syndrome/therapy , Telomere Shortening , Telomere , Liver Cirrhosis/complications , Fibrosis , Idiopathic Pulmonary Fibrosis/complications , Lung Diseases, Interstitial/complications
8.
Drug Test Anal ; 15(1): 66-74, 2023 Jan.
Article in English | MEDLINE | ID: mdl-36093901

ABSTRACT

The estimation of limits of detection (LOD) for solely qualitative methods in analytical chemistry may prove challenging because all the approaches with which chemists are familiar require some type of numeric data input. The best model to describe the binary response in these methods (detected/not detected) is a logistic model; however, these models are not easily handled by most of the laboratories and generally demand expensive statistical software packages. In this work, the advantages of applying this approach are discussed and its implementation using commercial spreadsheet software is demonstrated. A free online application based on the R environment using shinyapps was developed and its application was validated and discussed with a dataset of 57 different target compounds analyzed in urine according to the requirements of the World Anti-Doping Agency (WADA). This tool allows free, extremely quick, and easy determinations of LOD in qualitative analyses as well as the determination of the probabilities of detection in any given concentration.


Subject(s)
Doping in Sports , Tandem Mass Spectrometry , Limit of Detection , Tandem Mass Spectrometry/methods , Logistic Models , Internet
9.
J Therm Biol ; 109: 103319, 2022 Oct.
Article in English | MEDLINE | ID: mdl-36195387

ABSTRACT

This study evaluated the effect of climate change on andrological parameters of beef bulls raised under tropical, subtropical, and temperate conditions. Bull ejaculates were collected to evaluate seminal quality parameters, sperm membrane integrity, and redox status (SOD; GPx; GSH; GRx; CARB; DCF; and SOD/GPx ratio). Bulls located in the temperate region showed a higher sperm motility rate and percentage of viable sperm (P < 0.05). When evaluating regions independently, we observed a lower GPx activity from animals in the tropical region (P < 0.05). In contrast, we found that SOD and GRx activities, GSH content, and CARB oxidative levels were higher in the tropical region, while oxidation values of DCF were lower (P < 0.05). Braford bulls showed higher CARB and DCF levels (1.23 ± 0.61 nmol/mg and 1453.60 ± 828.63 nmol/mg, respectively) compared to Hereford bulls (1.00 ± 0.43 nmol/mg and 1138.70 ± 423.24 nmol/mg, respectively) in the temperate region. However, Nellore bulls showed higher DCF levels (650.50 ± 401.53 nmol/mg) than Braford bulls (409.40 ± 286.97 nmol/mg). In addition, the SOD/GPx ratio was lower in Braford (12.44 ± 7.64 U/mg) compared to Nellore bulls in tropical conditions (87.25 ± 2.83 U/mg). A positive correlation was found in temperate conditions between DCF levels, SOD, and GRx activities (0.51, 0.58; P < 0.01, respectively), as well as in subtropical conditions between DCF levels and GRx activity (0.53; P < 0.01). A negative correlation between the temperature-humidity index and CARB content was found in subtropical and tropical regions (-0.44; P < 0.01). We concluded that Braford breeds showed lower seminal motility, DCF contents and SOD/GPx ratios compared to Nellore bulls in tropical climate conditions. Finally, in temperate environmental conditions, Braford bulls also showed lower seminal motility but higher levels of CARB and DCF contents compared to Hereford bulls. Therefore, the existence of climatic differences between the temperate and tropical regions evaluated affected Braford bulls' seminal motility and seminal redox homeostasis.


Subject(s)
Semen , Sperm Motility , Animals , Cattle , Male , Oxidation-Reduction , Semen Analysis/veterinary , Spermatozoa , Superoxide Dismutase , Tropical Climate
10.
J Med Econ ; 25(1): 993-1004, 2022.
Article in English | MEDLINE | ID: mdl-35850613

ABSTRACT

AIMS: The Canadian province of Ontario provides full coverage for its residents (pop.14.8 M) for hospital-based diagnostic testing. Historical governance of the healthcare system and a legacy scheme of health technology assessment (HTA) and financing has led to a suboptimal approach of adopting advanced diagnostic technology (i.e. protein expression, cytogenetic, and molecular/genetic) for guiding therapeutic decisions. The aim of this research is to explore systemic barriers and provide guidance to improve patient and care provider experiences by reducing delays and inequity of access to testing, while benefitting laboratory innovators and maximizing system efficiency. MATERIALS AND METHODS: A mixed-methods approach including literature review, semi-structured interviews, and a multi-stakeholder forum involving patient representatives (n = 1), laboratory leaders (n = 6), physicians (n = 5), Ministry personnel (n = 4), administrators (n = 3), extra-provincial experts, and researchers (n = 7), as well as pharmaceutical (n = 5) and diagnostic companies (n = 2). The forum considered evidence of good practices in adoption, implementation, and financing laboratory services and identified barriers as well as feasible options for improving advanced diagnostic testing in Ontario. RESULTS: Overarching challenges identified included: barriers to define what is needed; need for a clear approach to adoption; and the need for more oversight and coordination. Recommendations to address these included a shift to an anticipatory system of test adoption, creating a fit-for-purpose system of health technology management that consolidates existing evaluation processes, and modernizing the governance and financing of testing so that it is managed at a care-delivery level. CONCLUSIONS: The proposals for change in Ontario highlight the role that HTA, governance, and financing of health technology play along the continuum of a health technology life cycle within a healthcare system where decision-making is highly decentralized. Resource availability and capacity were not a concern - instead, solutions require higher levels of coordination and system integration along with innovative approaches to HTA.


Subject(s)
Delivery of Health Care , Technology Assessment, Biomedical , Diagnostic Techniques and Procedures , Humans , Ontario , Technology Assessment, Biomedical/methods
11.
Diagn Pathol ; 17(1): 46, 2022 May 10.
Article in English | MEDLINE | ID: mdl-35538551

ABSTRACT

BACKGROUND: Neuroendocrine (NE) differentiation is widely studied in non-small cell lung carcinomas (NSCLC) however, its significance remains unclear in basaloid squamous cell carcinomas (B-SqCC). This study aims to assess the extent of NE differentiation in B-SqCC and characterize the underlying molecular process. METHODS: This study evaluated resected B-SqCC, small cell lung cancer (SCLC) and poorly differentiated SqCC (PD-SqCC) from 2005 to 2020 at the Ottawa Hospital. Samples were subject to pathological review, immunohistochemistry (IHC) and survival analysis. Gene expression analysis was performed on B-SqCC samples exhibiting NE+ and NE- regions (paired samples) to identify differentially expressed genes (DEGs). These DEGs were subsequently validated in unpaired B-SqCC and TCGA samples. RESULTS: B-SqCC cases were more likely to exhibit nuclear molding, resetting and peripheral palisading than PD-SqCC. B-SqCC were also more likely to demonstrate NE differentiation compared to PD-SqCC (p = 0.006). Pure basaloid squamous cell carcinoma (PB-SqCC) experienced poorer disease-free survival (HR = 3.12, p = 0.043) adjusted for stage. Molecular characterization of paired B-SqCC samples demonstrated DEGs implicated in NOTCH signaling, SCLC and pulmonary neuroendocrine differentiation. Hierarchical clustering using discovered DEGs in unpaired B-SqCC samples distinguished tumors based on NE status (p = 0.048). Likewise, clustering The Cancer Genome Atlas (TCGA) samples with DEGs distinguished B-SqCC from SqCC samples (p = 0.0094). CONCLUSION: This study provides IHC and molecular evidence of significant NE-differentiation in B-SqCC and demonstrates their aggressive clinical behavior. These findings suggest that B-SqCC are biologically distinct from SqCC and share characteristics with SCLC.


Subject(s)
Carcinoma, Neuroendocrine , Carcinoma, Non-Small-Cell Lung , Carcinoma, Squamous Cell , Lung Neoplasms , Carcinoma, Neuroendocrine/diagnosis , Carcinoma, Neuroendocrine/genetics , Carcinoma, Neuroendocrine/pathology , Carcinoma, Non-Small-Cell Lung/pathology , Carcinoma, Squamous Cell/diagnosis , Carcinoma, Squamous Cell/genetics , Carcinoma, Squamous Cell/metabolism , Humans , Immunohistochemistry , Lung/pathology , Lung Neoplasms/diagnosis , Lung Neoplasms/genetics , Lung Neoplasms/metabolism
12.
Curr Oncol ; 29(5): 3171-3186, 2022 04 29.
Article in English | MEDLINE | ID: mdl-35621648

ABSTRACT

Inuit are the Indigenous Arctic peoples and residents of the Canadian territory of Nunavut who have the highest global rate of lung cancer. Given lung cancer's mortality, histological and genomic characterization was undertaken to better understand the disease biology. We retrospectively studied all Inuit cases from Nunavut's Qikiqtani (Baffin) region, referred to the Ottawa Hospital Cancer Center between 2001 and 2011. Demographics were compiled from medical records and tumor samples underwent pathologic/histologic confirmation. Tumors were analyzed by next generation sequencing (NGS) with a cancer hotspot mutation panel. Of 98 patients, the median age was 66 years and 61% were male. Tobacco use was reported in 87%, and 69% had a history of lung disease (tuberculosis or other). Histological types were: non-small cell lung carcinoma (NSCLC), 81%; small cell lung carcinoma, 16%. Squamous cell carcinoma (SCC) represented 65% of NSCLC. NGS on 55 samples demonstrated mutation rates similar to public lung cancer datasets. In SCC, the STK11 F354L mutation was observed at higher frequency than previously reported. This is the first study to characterize the histologic/genomic profiles of lung cancer in this population. A high incidence of SCC, and an elevated rate of STK11 mutations distinguishes this group from the North American population.


Subject(s)
Carcinoma, Non-Small-Cell Lung , Carcinoma, Squamous Cell , Lung Neoplasms , Aged , Canada , Carcinoma, Non-Small-Cell Lung/genetics , Female , Humans , Inuit , Lung Neoplasms/genetics , Male , Retrospective Studies
13.
Int J Surg Pathol ; 30(2): 221-226, 2022 Apr.
Article in English | MEDLINE | ID: mdl-34287076

ABSTRACT

Primary biphasic tumors of the lung are rare. Lung lesions with a biphasic pattern are far more commonly primary or metastatic soft tissue tumors with entrapped native respiratory epithelium, giving the false impression of a biphasic tumor. We report a case of bilateral benign metastasizing leiomyomas in a 69-year-old female where the tumor cells diffusely entrapped native respiratory glands in a phyllodes-like pattern. The radiographic characteristics and histologic appearance were not immediately diagnostic and covered a wide differential. Reaching the final diagnosis required the use of immunohistochemical studies as well as correlation with the patient's history and radiographic findings. To the best of our knowledge, this is the first report of pulmonary benign metastasizing leiomyoma presenting in a phyllodes-like pattern. This case illustrates the importance of considering entrapment of native lung epithelium in the differential diagnosis of biphasic-appearing lung tumors.


Subject(s)
Leiomyoma , Lung Neoplasms , Uterine Neoplasms , Aged , Diagnosis, Differential , Female , Humans , Leiomyoma/diagnosis , Leiomyoma/pathology , Lung/diagnostic imaging , Lung/pathology , Lung Neoplasms/pathology , Uterine Neoplasms/diagnosis , Uterine Neoplasms/pathology
14.
Braz Dent J ; 32(5): 87-95, 2021.
Article in English | MEDLINE | ID: mdl-34877981

ABSTRACT

This study evaluated the effect of the use of glass ionomer cement (GIC) and flowable bulk-fill resin composite (BFRC) for filling pulp chambers and the type of high-speed handpiece light used on dentin removal during access preparation for endodontic retreatment in molar teeth. Twenty maxillary molars were treated endodontically. BFRC (Opus Bulk Fill Flow APS, FGM) was used to fill the pulp chamber and replace coronal dentin (n = 10). In the remaining teeth, the pulp chamber was filled with GIC (Maxion R, FGM). Conventional resin composite (Opallis, FGM) was used to restore the enamel layer in all teeth. The samples in each group were divided into two subgroups, and the root canals were reaccessed using a handpiece with white or ultraviolet light. The teeth were scanned using micro-CT before and after root canal reaccess. The dentin volume removed was calculated and analyzed using 2-way analysis of variance and Tukey's test (α = 0.05). The crown and pulp chamber locations with dentin removal are described using frequency distribution. During the access, fewer pulp chamber walls were affected and a lower volume of dentin was removed from the pulpal floor in the group restored with GIC than in the group restored with BFRC. No effect was observed on the coronal dentin walls with respect to the filling protocols and type of light used. For dentin removal from the pulp chamber, handpieces with white light performed better than those with ultraviolet light, irrespective of the filling protocol used. The use of GIC to fill the pulp chamber and use of white handpiece light reduced dentin removal from the pulpal floor and resulted in fewer affected dentin walls.


Subject(s)
Dental Pulp Cavity , Root Canal Therapy , Dentin , Glass Ionomer Cements , Retreatment
15.
ARS med. (Santiago, En línea) ; 46(4): 40-43, dic. 07, 2021.
Article in English | LILACS-Express | LILACS | ID: biblio-1368130

ABSTRACT

Introduction: Competency-based medical education (CBME) is being adopted worldwide. The aim of this paper is to discuss the evolution of CBME and address some perceived challenges in CBME curriculum development and implementation in postgraduate (residency) medical education. Methods: This is an opinion paper based on lived experiences and personal beliefs. The authors have professional training in medical education and are actively involved in CBME research, curriculum development and implementation around the world. Results: The issue of local and system-wide context seems to be of particular importance to individuals, programs, institutions, governing bodies and other stakeholders involved in the development and implementation of CBME programs. CBME has evolved differently at different places, and there are concerns regarding the fidelity of implementation. Stakeholders have been dealing with challenging questions in their CBME journeys, which reflect the varied, complex and dynamic nature of health and education systems. Recently, scholars have established core components of any CBME program. Discussion and conclusions: CBME design should benefit from ground-up strategies that consider the local context. It is essential to approach implementation with a quality improvement lens and pay special attention to the fidelity and integrity of the core CBME components.


Introducción: la educación médica basada en competencias (CBME) se está adoptando en todo el mundo. El objetivo de este artículo es discutir la evolución de la CBME y abordar algunos desafíos percibidos en el desarrollo y la implementación de los estándares de CBME en la educación médica de posgrado (residencia). Métodos: este es un artículo de opinión basado en experiencias vividas y creencias personales. Los autores tienen formación profesional en educación médica y participan activamente en la investigación, el desarrollo y la implementación de programas de CBME en varios países. Resultados: la cuestión del contexto local y de todo el sistema parece ser de particular importancia para las personas, los programas, las instituciones, los órganos de gobierno y otras partes inte-resadas involucradas en el desarrollo y la implementación de los programas de CBME. La CBME ha evolucionado de manera diferente en diferentes lugares y existen preocupaciones con respecto a la fidelidad de la implementación. Las partes interesadas han estado lidiando con cuestiones difíciles en sus proyectos de CBME, que reflejan la naturaleza variada, compleja y dinámica de los sistemas de salud y educación. Recientemente, los académicos han establecido componentes centrales de cualquier programa CBME. Discusión y conclusiones: el diseño de la CBME debería beneficiarse de estrategias de base que consideren el contexto local. Sin embargo, es importante abordar la implementación con una lente de mejora de la calidad y prestar especial atención a la fidelidad e integridad de los componentes centrales de la CBME.

16.
Cancer Med ; 10(24): 9040-9046, 2021 12.
Article in English | MEDLINE | ID: mdl-34766461

ABSTRACT

BACKGROUND: Systemic therapy prolongs overall survival (OS) in advanced non-small cell lung cancer (NSCLC), but diagnostic tests, staging and molecular profiling take time, and this can delay therapy initiation. OS approximates first-order kinetics. METHODS: We used OS of chemo-naive NSCLC patients on a placebo/best supportive care trial arm to estimate % of patients dying while awaiting therapy. We digitized survival curves from eight studies, calculated OS half-life, then estimated the proportion surviving after different times of interest (tn ) using the formula: X=exp-tn∗0.693/t1/2 , where EXP signifies exponential, * indicates multiplication, 0.693 is the natural log of 2, and t1/2 is the survival half-life in weeks. RESULTS: Across trials, the OS half-life for placebo/best supportive care in previously untreated NSCLC was 19.5 weeks. Hence, based on calculations using the formula above, if therapy were delayed by 1, 2, 3, or 4 weeks then 4%, 7%, 10%, and 13% of all patients, respectively, would die while awaiting treatment. Others would become too sick to consider therapy even if still alive. CONCLUSIONS: This quantifies why rapid baseline testing and prompt therapy initiation are important in advanced NSCLC. It also illustrates why screening procedures for clinical trial inclusion must be faster. Otherwise, it is potentially hazardous for a patient to be considered for a trial due to risk of death or deterioration while awaiting eligibility assessment. It is also important to not delay initiation of systemic therapy for procedures that add relatively little value, such as radiotherapy for small, asymptomatic brain metastases.


Subject(s)
Carcinoma, Non-Small-Cell Lung/diagnosis , Lung Neoplasms/diagnosis , Carcinoma, Non-Small-Cell Lung/mortality , Carcinoma, Non-Small-Cell Lung/pathology , Humans , Lung Neoplasms/mortality , Lung Neoplasms/pathology , Progression-Free Survival
17.
Thorac Surg Clin ; 31(4): 477-483, 2021 Nov.
Article in English | MEDLINE | ID: mdl-34696860

ABSTRACT

Clinicopathological and imaging studies indicate that metastatic spread of cancer cells through the airways may occur in primary lung cancer. The term aerogenous metastasis was been proposed years before the concept of spread through the airspaces (STAS) was introduced in the current World Health Organization classification. The pathogenesis of STAS has not been fully elucidated. The current definition of STAS is controversial and limited to early stage adenocarcinomas. In this article, existing knowledge on the pathogenesis, histology, imaging findings, and clinical and prognostic significance of these 2 entities is presented.


Subject(s)
Adenocarcinoma of Lung , Adenocarcinoma , Lung Neoplasms , Adenocarcinoma/pathology , Adenocarcinoma of Lung/pathology , Humans , Lung Neoplasms/diagnostic imaging , Lung Neoplasms/pathology , Neoplasm Invasiveness/pathology , Neoplasm Recurrence, Local , Neoplasm Staging , Prognosis , Retrospective Studies
18.
Braz. dent. j ; 32(5): 87-95, Sept.-Oct. 2021. tab, graf
Article in English | LILACS-Express | LILACS, BBO - Dentistry | ID: biblio-1350290

ABSTRACT

Abstract This study evaluated the effect of the use of glass ionomer cement (GIC) and flowable bulk-fill resin composite (BFRC) for filling pulp chambers and the type of high-speed handpiece light used on dentin removal during access preparation for endodontic retreatment in molar teeth. Twenty maxillary molars were treated endodontically. BFRC (Opus Bulk Fill Flow APS, FGM) was used to fill the pulp chamber and replace coronal dentin (n = 10). In the remaining teeth, the pulp chamber was filled with GIC (Maxion R, FGM). Conventional resin composite (Opallis, FGM) was used to restore the enamel layer in all teeth. The samples in each group were divided into two subgroups, and the root canals were reaccessed using a handpiece with white or ultraviolet light. The teeth were scanned using micro-CT before and after root canal reaccess. The dentin volume removed was calculated and analyzed using 2-way analysis of variance and Tukey's test (α = 0.05). The crown and pulp chamber locations with dentin removal are described using frequency distribution. During the access, fewer pulp chamber walls were affected and a lower volume of dentin was removed from the pulpal floor in the group restored with GIC than in the group restored with BFRC. No effect was observed on the coronal dentin walls with respect to the filling protocols and type of light used. For dentin removal from the pulp chamber, handpieces with white light performed better than those with ultraviolet light, irrespective of the filling protocol used. The use of GIC to fill the pulp chamber and use of white handpiece light reduced dentin removal from the pulpal floor and resulted in fewer affected dentin walls.


Resumo Este estudo avaliou os efeitos do cimento de ionômero de vidro (GIC) e da resina composta fluida bulk fill (BFRC) usados como preenchimento da câmara pulpar; e o tipo de iluminação das turbinas de alta rotação na remoção dentinária após cavidades de acesso para retratamento endodôntico em dentes molares. Vinte molares superiores foram tratados endodonticamente. Dez dentes foram restaurados usando BFRC (Opus Bulk Fill Flow APS, FGM) para preencher a câmara pulpar e dentina coronária; e resina composta convencional (Opallis, FGM) para restaurar a camada de esmalte. Os outros dentes foram restaurados usando GIC (Maxion R, FGM) para preencher a câmara pulpar e resina composta (Opallis, FGM). As amostras foram divididas em dois grupos e os canais radiculares foram novamente acessados com turbina de alta-rotação com iluminação branca ou ultravioleta. Os dentes foram escaneados usando micro-CT antes e após o novo acesso ao canal radicular. O volume de dentina removida foi calculado e os dados foram analisados por ANOVA bidirecional e teste de Tukey (α=0,05). As regiões na coroa e na câmara pulpar que apresentaram dentina removida no acesso dos canais foram descritas por meio de distribuição por frequência. A reabertura do canal radicular com GIC resultou em menos paredes afetadas da câmara pulpar e menor volume de dentina removida no assoalho. Nenhum efeito foi observado nas paredes de dentina coronária considerando aos protocolos de preenchimento. A turbina de alta rotação com iluminação branca reduziu a remoção de dentina da câmara pulpar, independentemente do protocolo de restauração utilizado. O uso de turbina de alta rotação com iluminação branca e GIC para preencher a câmara pulpar reduziram a remoção de dentina do assoalho e afetaram menos paredes dentinárias.

19.
Thorac Surg Clin ; 31(3): 229-235, 2021 Aug.
Article in English | MEDLINE | ID: mdl-34304831

ABSTRACT

In this chapter, the authors review and discuss the literature on multidisciplinary cancer conferences (MCCs, aka tumor boards), clarifying the terminology, showing the evolution of the field, and providing an evidence-based perspective on positive outcomes, best practices, factors influencing the quality of MCCs, evaluation tools to assess the quality of MCCs, and quality improvement interventions for MCCs. The authors then discuss some perspectives from their MCC and initiatives that they undertook to improve the work of their team and the care that they provide to patients in the area of thoracic oncology.


Subject(s)
Neoplasms , Humans , Patient Care Team , Quality Improvement
20.
Transplant Cell Ther ; 27(9): 702-706, 2021 09.
Article in English | MEDLINE | ID: mdl-34153503

ABSTRACT

Hematopoietic stem cell transplantation (HSCT) and cellular therapy (CT) exploit the therapeutic potential of manipulated or unmanipulated hematopoietic cells to treat diseases. While initially dedicated to the treatment of hematologic malignancies and disorders, the use of these therapies in several diseases and cancers is currently under investigation. Indications are currently booming. In the midst of this expansion, both the American Society for Transplantation and Cellular Therapy (ASTCT) and the European Society for Blood and Marrow Transplantation (EBMT) have highlighted the global shortage of hematologists adequately trained in this field of high expertise. This shortage in transplant physicians and cellular therapists can significantly impact patients' access to cell-based therapy. To address this unmet need and attract aspiring hematologists to the field of cellular therapy, as well as to standardize training, anticipating this trend, a Canadian national task force aiming to develop a structured academic program in HSCT and CT was created. Workshops were organized to identify and establish the fundamentals of the practice in HSCT and CT. These workshops followed a rigorous process in developing the competency-based training program established by the Royal College. The program begins with the development of the main tasks associated with the practice of the discipline and the evidence that trainees must provide to demonstrate that they can perform these tasks independently (the competence portfolio). It continues with the development of training requirements that summarize the knowledge, skills, and aptitudes required to perform these tasks, followed by specific exposure during training (milestones) essential to demonstrate the acquisition of these skills. HSCT and CT together is now formally recognized as an Area of Focused Competence (AFC) by the Royal College of Physicians and Surgeons of Canada, a national organization that provides oversight of the medical education of specialists in Canada. AFCs are areas of specialty medicine that address a legitimate societal and patient population need previously unmet by the system of primary and subspecialty disciplines. The AFC designation for HSCT and CT provides a standardized curriculum, training experience, and accreditation process to attract young hematologists and promote expertise and quality care to meet the needs of both patients and society. A critical number of highly qualified hematologists will ensure continuing expansion of accessibility to HSCT and CT.


Subject(s)
Education, Medical , Hematopoietic Stem Cell Transplantation , Accreditation , Canada , Curriculum , Humans , United States
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