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INTRODUCTION/AIMS: Muscle ultrasound has been investigated in children with spinal muscular atrophy (SMA) and proposed as a potential biomarker of disease severity. We studied the ultrasound properties in adults with SMA to see whether they also have potential as markers of disease severity in older patients. METHODS: Thickness and quantitative echogenicity of muscle and subcutaneous tissue were compared between eight prospectively recruited adult patients with SMA and eight age, sex and body mass index-matched controls. Measurements were made in the dominant deltoid, biceps, triceps, forearm extensors, first dorsal interosseous, quadriceps, tibialis anterior, and gastrocnemius muscles. The muscle-to-subcutaneous (M:S) thickness and echogenicity ratios were also calculated. A mean value across all muscles as well as the individual values for each muscle were then calculated for each parameter in each subject and compared between the two groups. Significance was set at 0.05 after Bonferroni correction. RESULTS: In the SMA patients, mean muscle thickness was significantly smaller (1.3 vs. 1.9 cm), muscle echogenicity higher (106 vs. 67 on the grayscale level), and subcutaneous thickness larger (0.9 vs. 0.3 cm) than in controls; M:S echogenicity ratio was significantly increased and M:S thickness ratio reduced in the patients. The most abnormal scores were found in the nonambulatory patients and the least abnormal in the ambulatory patients. DISCUSSION: Ultrasound can detect and quantify the severity of muscle atrophy and structure in adult SMA, suggesting a potential role as a marker of disease severity, which will require validation by larger studies.
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Atrofia Muscular Espinal , Criança , Adulto , Humanos , Idoso , Projetos Piloto , Atrofia Muscular Espinal/diagnóstico por imagem , Músculo Esquelético/diagnóstico por imagem , Ultrassonografia , Músculo QuadrícepsRESUMO
Ultrasonography is widely practiced in many disciplines. It is becoming increasingly important to design well-structured curricula to introduce imaging to students during medical school. This review aims to analyze the literature for evidence of how ultrasonography has been incorporated into anatomy education in medical school curricula worldwide. A literature search was conducted using multiple databases with the keywords: "Ultrasound OR Ultrasonographic examination*" and "Medical student* OR Undergraduate teaching* OR Medical education*" and "Anatomy* OR Living anatomy* OR Real-time anatomy.*" This review found that ultrasound curricula vary in stage of implementation, course length, number of sessions offered to students as well as staffing and additional course components. Most courses consisted of didactic lectures supplemented with demonstration sessions and/or hands-on ultrasound scanning sessions. The stage of course implementation tended to depend on the aim of the course; introductory courses were offered earlier in a student's career. Most courses improved student confidence and exam performance, and more junior students tended to benefit more from learning anatomy with ultrasound guidance rather than learning clinical examination skills. Students tended to prefer smaller groups when learning ultrasound to get more access to using the machines themselves. Ultrasonography is an important skill, which should be taught to medical students early in their careers as it facilitates anatomical education and is clinically relevant, though further objective research required to support the use of ultrasound education as a tool to improve clinical examination skills in medical students. Clin. Anat. 30:452-460, 2017. © 2017 Wiley Periodicals, Inc.
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Competência Clínica , Currículo , Educação de Graduação em Medicina/métodos , Faculdades de Medicina , Estudantes de Medicina , Ultrassonografia , Avaliação Educacional/métodos , HumanosRESUMO
Surface anatomy is a core component of human anatomy in clinical practice. It allows clinicians to assess patients accurately and quickly; however, recent studies have revealed variability among individuals and ethnicities. The aim of this study is to investigate possible variations in adult thoracic and abdominal surface anatomy landmarks in an Iranian population. This study used 100 thoracoabdominal CT scans (mean age: 47 ± 17 years, age range: 20-77 years, 47% females), noted the most common locations of clinically relevant surface markings, and analyzed correlations between these variables and age or gender. While many common surface markings in Iranians were consistent with the evidence-based literature, there were some differences. In relation to the corresponding segments of the vertebral column, the superior vena cava formation and the lower border of the pleura adjacent to the vertebral column and right kidney tended to be at higher levels in adult Iranians than a Caucasian population. There were also discrepancies between the Iranian population and commonly-referenced medical textbooks and recent evidence-based literature concerning the vertebral levels of the diaphragmatic openings of the esophagus, aorta, and inferior vena cava. This study emphasizes the need to consider evidence-based reappraisals of surface anatomy to guide clinical practice. Much of our current knowledge of surface anatomy is based on older studies of cadavers rather than living people, and does not take ethnic and individual variations into consideration.
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Abdome/anatomia & histologia , Pontos de Referência Anatômicos/diagnóstico por imagem , Tórax/anatomia & histologia , Abdome/diagnóstico por imagem , Adulto , Idoso , Feminino , Humanos , Irã (Geográfico) , Masculino , Pessoa de Meia-Idade , Valores de Referência , Tórax/diagnóstico por imagem , Tomografia Computadorizada por Raios X , Adulto JovemRESUMO
AIMS: To describe the clinical features and outcomes of patients with myelopathy and neuropathy due to recreationally inhaled nitrous oxide. METHODS: We identified patients presenting with nitrous oxide-associated myelopathy from an electronic database of all discharges in a large tertiary hospital between 2016 and 2023. Demographics, clinical features and the results of investigations were recorded. The primary outcome was modified Rankin Scale score (mRS) at least 3 months after hospital discharge where available. RESULTS: There were 12 patients identified, six women, mean (SD) age 27.5 (5.1) years, range 19-47 years. The most common symptoms were numbness, weakness and mental state changes. Four patients used large amounts of inhaled nitrous oxide and also took over-the-counter vitamin B12 supplements. The median (range) hospital length of stay was 8.5 (2-56) days. Functional independence at last assessment (median [range] of 3 [1-34] months after discharge) was achieved in nine of the patients, with three requiring ongoing support for activities of daily living (mRS ≥3). CONCLUSION: Nitrous oxide abuse and its neurological complications are an important public health issue. Clinicians should be aware that some patients who use large amounts of nitrous oxide may self-supplement vitamin B12.
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Óxido Nitroso , Doenças da Medula Espinal , Humanos , Óxido Nitroso/efeitos adversos , Óxido Nitroso/administração & dosagem , Feminino , Adulto , Masculino , Pessoa de Meia-Idade , Doenças da Medula Espinal/induzido quimicamente , Adulto Jovem , Vitamina B 12/administração & dosagem , Transtornos Relacionados ao Uso de Substâncias/epidemiologia , Anestésicos Inalatórios/efeitos adversos , Anestésicos Inalatórios/administração & dosagem , Estudos Retrospectivos , Tempo de Internação/estatística & dados numéricosRESUMO
BACKGROUND: Inefficient electronic health record (EHR) usage increases the documentation burden on physicians and other providers, which increases cognitive load and contributes to provider burnout. Studies show that EHR efficiency sessions, optimization sprints, reduce burnout using a resource-intense five-person team. We implemented sprint-inspired one-on-one post-go-live efficiency training sessions (mini-sprints) as a more economical training option directed at providers. OBJECTIVES: We evaluated a post-go-live mini-sprint intervention to assess provider satisfaction and efficiency. METHODS: NorthShore University HealthSystem implemented one-on-one provider-to-provider mini-sprint sessions to optimize provider workflow within the EHR platform. The physician informaticist completed a 9-point checklist of efficiency tips with physician trainees covering schedule organization, chart review, speed buttons, billing, note personalization/optimization, preference lists, quick actions, and quick tips. We collected postsession survey data assessing for net promoter score (NPS) and open-ended feedback. We conducted financial analysis of pre- and post-mini-sprint efficiency levels and financial data. RESULTS: Seventy-six sessions were conducted with 32 primary care physicians, 28 specialty physicians, and 16 nonphysician providers within primary care and other areas. Thirty-seven physicians completed the postsession survey. The average NPS for the completed mini-sprint sessions was 97. The proficiency score had a median of 6.12 (Interquartile range (IQR): 4.71-7.64) before training, and a median of 7.10 (IQR: 6.25-8.49) after training. Financial data analysis indicates that higher level billing codes were used at a greater frequency post-mini-sprint. The revenue increase 12 months post-mini-sprint was $213,234, leading to a return of $75,559.50 for 40 providers, or $1,888.98 per provider in a 12-month period. CONCLUSION: Our data show that mini-sprint sessions were effective in optimizing efficiency within the EHR platform. Financial analysis demonstrates that this type of training program is sustainable and pays for itself. There was high satisfaction with the mini-sprint training modality, and feedback indicated an interest in further mini-sprint training sessions for physicians and nonphysician staff.
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Registros Eletrônicos de Saúde , Humanos , Satisfação Pessoal , MédicosRESUMO
Neuronal intranuclear inclusion disease, caused by a GGC repeat expansion in the 5'-untranslated region of NOTCH2NLC, is a rare neurodegenerative condition with highly variable clinical manifestations. In recent years, the number of reported cases have increased dramatically in East Asia. We report the first four genetically confirmed cases of neuronal intranuclear inclusion disease in New Zealand, all having Polynesian ancestry (three New Zealand Maori and one Cook Island Maori). Phenotypically, they resemble cases reported from recent large East Asian cohorts.
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Corpos de Inclusão Intranuclear , Doenças Neurodegenerativas , Humanos , Nova Zelândia , Corpos de Inclusão Intranuclear/patologia , Corpos de Inclusão Intranuclear/genética , Doenças Neurodegenerativas/genética , Doenças Neurodegenerativas/patologia , Masculino , Feminino , Pessoa de Meia-Idade , Idoso , Receptor Notch2/genéticaRESUMO
PURPOSE: To evaluate the radiation doses delivered during volumetric helical perfusion CT of the thorax, abdomen or pelvis. MATERIALS AND METHODS: The dose-length product (DLP) and CT dose index (CTDIvol) were recorded and effective dose (E) determined for patients undergoing CT (4D adaptive spiral) for tumour evaluation. Image noise and contrast to noise (CNR) at peak enhancement were also assessed for quality. RESULTS: Forty two consecutive examinations were included: thorax (16), abdomen (10), pelvis (16). Z-axis coverage ranged from 11.4 to 15.7 cm. Mean DLP was 1288.8 mGy.cm (range: 648 to 2456 mGy.cm). Mean CTDIvol was 96.2 mGy (range: 32.3 to 169.4 mGy). Mean effective dose was 19.6 mSv (range: 12.3 mSv to 36.7 mSv). In comparison mean DLP and effective dose was 885.2 mGy.cm (range: 504 to 1633 mGy.cm) and 13.3 mSV (range: 7.8 to 24.5 mSv) respectively for the standard staging CT thorax, abdomen and pelvis. Mean tumour CNR at peak enhancement was 1.87. CONCLUSION: The radiation dose imposed by perfusion CT was on average 1.5 times that of a CT thorax, abdomen and pelvis. The dose is not insubstantial, and must be balanced by the potential clinical utility of additional physiologic data. Further efforts towards dose reduction should be encouraged.
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Tomografia Computadorizada de Feixe Cônico/métodos , Neoplasias/diagnóstico por imagem , Pelve/diagnóstico por imagem , Radiografia Abdominal/métodos , Radiografia Torácica/métodos , Tomografia Computadorizada Espiral/métodos , Adulto , Idoso , Idoso de 80 Anos ou mais , Desenho de Equipamento , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Neoplasias/diagnóstico , Perfusão , Imagens de Fantasmas , Doses de RadiaçãoRESUMO
The diagnosis of primary aldosteronism, the most common form of secondary hypertension, is based on clinical and biochemical features. Although radiology plays no role in the initial diagnosis, it has an important role in differentiating between the two main causes of primary aldosteronism: aldosterone-producing adenoma (APA) and bilateral adrenal hyperplasia (BAH). This distinction is important because APAs are generally managed surgically and BAH medically. Adrenal venous sampling is considered the standard of reference for determining the cause of primary aldosteronism but is technically demanding, operator dependent, costly, and time consuming, with a low but significant complication rate. Other imaging modalities, including computed tomography, magnetic resonance imaging, and adrenal scintigraphy, have also been used to determine the cause of primary aldosteronism. Cross-sectional imaging has traditionally focused on establishing the diagnosis of an APA, with that of BAH being one of exclusion. A high specificity for detecting an APA is desirable, since it will avert unnecessary surgery in patients with BAH. However, an overreliance on cross-sectional imaging can lead to the incorrect treatment of affected patients, mainly due to the wide variation in the reported diagnostic performance of these modalities. A combination of modalities is usually required to confidently determine the cause of primary aldosteronism. The quest for optimal radiologic management of primary aldosteronism continues just over a half century since this disease entity was first described.
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Diagnóstico por Imagem/métodos , Hiperaldosteronismo/diagnóstico , Hipertensão/diagnóstico , Aumento da Imagem/métodos , Adulto , Idoso , Diagnóstico Diferencial , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Guias de Prática Clínica como Assunto , Padrões de Prática MédicaRESUMO
RATIONALE: Misuse or dislike of nicotine replacement treatments (NRTs) undermines their effectiveness. Brief testing among NRTs could allow tailoring by preference to improve outcome. OBJECTIVE: To test initial reactions/preferences to NRTs in a single session crossover design with guided use. METHODS: Smokers were offered two doses of three NRTs: gum (2 and 4 mg), inhaler, and nasal spray (NNS) in a 5-h test with proper use enforced. Subjects rated each NRT and ranked among NRTs on use variables and preferences. RESULTS: Gum was ranked over inhaler and NNS for "ease of use," "safety" and "prefer in public." Four-milligram gum was rated higher than 2 mg on several variables. With experience, "ease of use" and "liking" improved for gum. Both inhaler and NNS ranked low on considering "use >3 months" vs gum. Dislike of NRT was reflected in refusal of second doses. For those testing all doses (n=9), inhaler ranked last on "relief of withdrawal," "choose under stress," and "choice to help quit." Craving and withdrawal were relieved over time with any NRT use. CONCLUSIONS: Sampling of treatments can identify reactions key to initial compliance with these NRTs.
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Nicotina/administração & dosagem , Agonistas Nicotínicos/administração & dosagem , Abandono do Hábito de Fumar/métodos , Tabagismo/tratamento farmacológico , Adulto , Análise de Variância , Goma de Mascar , Estudos Cross-Over , Relação Dose-Resposta a Droga , Vias de Administração de Medicamentos , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Abandono do Hábito de Fumar/psicologia , Fatores de TempoRESUMO
OBJECTIVE: To test initial reactions to 5 nicotine treatments (NRTs: 2 and 4 mg gum, inhaler, nasal spray, tablet) in a crossover study (n=41). METHODS: Subjects used each medication on arising (1/2 day) and resumed smoking each afternoon. Subjects rated (individually) and ranked (comparatively) treatments on use, reinforcement, withdrawal, craving, and preferences. RESULTS: Overall preferences: inhaler (49%), 4 mg gum (24%), 2 mg gum (10%), 2 mg tablet (10%), nasal spray (7%). Overall results were consistent with ratings and rankings of individual characteristics of drugs. CONCLUSION: Subjects had varied reactions to NRTs that may affect initiation of cessation.