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1.
Zentralbl Chir ; 149(1): 75-82, 2024 Feb.
Artigo em Alemão | MEDLINE | ID: mdl-38442886

RESUMO

About one third of all colorectal carcinomas (CRC) are localised in the rectum. As part of a multimodal therapy concept, neoadjuvant therapy achieves downstaging of the tumour in 50-60% of cases and a so-called complete clinical response (cCR), defined as clinically (and radiologically) undetectable residual tumour after completion of neoadjuvant therapy, in 10-30% of cases.In view of the perioperative morbidity and mortality associated with radical rectal resection, including the occurrence of a symptom complex known as low anterior resection syndrome (LARS) and the need for deviation, at least temporarily, the question of the risk-benefit balance of organ resection in the presence of cCR has been raised. In this context, the therapeutic concept of a "watch-and-wait" approach with omission of immediate organ resection and inclusion in a structured surveillance regime, has emerged.For a safe, oncological implementation of this option, it is necessary to develop standards in the definition of a suitable patient clientele and the implementation of the concept. In addition to the initial correct selection of the patient group that is suitable for a primarily non-surgical procedure, the inherent goal is the early and sufficient detection of tumour recurrence (so-called local regrowth) during the "watch-and-wait" phase (surveillance).In this context, in this paper we address the questions of: 1. the optimal timing of initial re-staging, 2. the criteria for assessing the clinical response and selecting the appropriate patient clientele, 3. the rhythm and design of the surveillance protocol.


Assuntos
Neoplasias Colorretais , Neoplasias Retais , Humanos , Neoplasias Retais/diagnóstico , Neoplasias Retais/cirurgia , Complicações Pós-Operatórias , Síndrome , Reto , Resposta Patológica Completa
2.
Chirurgie (Heidelb) ; 95(1): 20-26, 2024 Jan.
Artigo em Alemão | MEDLINE | ID: mdl-38071258

RESUMO

BACKGROUND: In recent years many new surgical techniques for minimally invasive treatment of ventral hernias have been developed and introduced. This review article presents these new minimally invasive surgical techniques, such as extended totally extraperitoneal (eTEP) repair, mini or less open sublay (MILOS), endoscopic-assisted linea alba reconstruction (ELAR), the ventral transabdominal preperitoneal patch (TAPP) technique, intraperitoneal onlay mesh (IPOM) plus and laparoscopic intracorporeal rectus aponeuroplasty (LIRA) and discusses recently published results. RESULTS: Modern minimally invasive techniques for the treatment of ventral hernias have the potential to reduce surgical site infections, lower postoperative pain and lead to a shorter duration of hospital stay compared to the classical open hernia repair; however, especially techniques with a retromuscular mesh position are technically challenging due to the preparation in a limited space and difficult to perform endoscopic sutures and necessitate detailed knowledge of the anatomy of the abdominal wall. The treatment of larger hernias in particular should therefore only be carried out under the prerequisite of extensive experience and case numbers. CONCLUSION: The new endoscopic and endoscopically assisted techniques for treatment of ventral hernias enable the experienced laparoscopic surgeon to primarily and secondarily treat ventral hernias with minimally invasive techniques.


Assuntos
Hérnia Ventral , Hérnia Incisional , Laparoscopia , Humanos , Hérnia Incisional/cirurgia , Telas Cirúrgicas , Hérnia Ventral/cirurgia , Laparoscopia/métodos , Procedimentos Cirúrgicos Minimamente Invasivos
3.
Chirurgie (Heidelb) ; 95(3): 200-206, 2024 Mar.
Artigo em Alemão | MEDLINE | ID: mdl-37957403

RESUMO

BACKGROUND: Pheochromocytoma is a rare but severe disease of the adrenal glands. The aim of this study is to present and discuss recent developments in the diagnosis and treatment of pheochromocytoma. MATERIAL AND METHODS: A narrative review article based on the most recent literature is presented. RESULTS AND DISCUSSION: The proportion of pheochromocytomas as tumors of adrenal origin is about 5% of incidentally discovered adrenal tumors. The classical symptomatic triad of headaches, sweating, and palpitations occurs in only about 20% of patients, while almost all patients show at least 1 of these symptoms. To diagnose pheochromocytoma, levels of free plasma metanephrines or alternatively, fractionated metanephrines in a 24­h urine collection is required in a first step. In the second step an imaging procedure, computed tomography (CT) or magnetic resonance imaging (MRI), is performed to localize the adrenal tumor. Functional imaging is also recommended to preoperatively detect potential metastases. Genetic testing should always be offered during the course of treatment as 30-40% of pheochromocytomas are associated with genetic mutations. The dogma of preoperative alpha blockade is increasingly being questioned and has been controversially discussed in recent years. Minimally invasive removal of the adrenal tumor is the standard surgical procedure to cure patients with pheochromocytoma. The transabdominal and retroperitoneal laparoscopic approaches are considered equivalent. The choice of the minimally invasive procedure depends on the expertise and experience of the surgeon and should be tailored accordingly. Individualized and regular follow-up care is important after surgery.


Assuntos
Neoplasias das Glândulas Suprarrenais , Feocromocitoma , Humanos , Feocromocitoma/diagnóstico , Feocromocitoma/genética , Feocromocitoma/cirurgia , Medicina de Precisão , Neoplasias das Glândulas Suprarrenais/diagnóstico , Neoplasias das Glândulas Suprarrenais/genética , Neoplasias das Glândulas Suprarrenais/cirurgia , Glândulas Suprarrenais/patologia , Metanefrina
4.
Front Cell Dev Biol ; 11: 1223032, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37849736

RESUMO

Loss of intestinal epithelial barrier function is a hallmark in digestive tract inflammation. The detailed mechanisms remain unclear due to the lack of suitable cell-based models in barrier research. Here we performed a detailed functional characterization of human intestinal organoid cultures under different conditions with the aim to suggest an optimized ex-vivo model to further analyse inflammation-induced intestinal epithelial barrier dysfunction. Differentiated Caco2 cells as a traditional model for intestinal epithelial barrier research displayed mature barrier functions which were reduced after challenge with cytomix (TNFα, IFN-γ, IL-1ß) to mimic inflammatory conditions. Human intestinal organoids grown in culture medium were highly proliferative, displayed high levels of LGR5 with overall low rates of intercellular adhesion and immature barrier function resembling conditions usually found in intestinal crypts. WNT-depletion resulted in the differentiation of intestinal organoids with reduced LGR5 levels and upregulation of markers representing the presence of all cell types present along the crypt-villus axis. This was paralleled by barrier maturation with junctional proteins regularly distributed at the cell borders. Application of cytomix in immature human intestinal organoid cultures resulted in reduced barrier function that was accompanied with cell fragmentation, cell death and overall loss of junctional proteins, demonstrating a high susceptibility of the organoid culture to inflammatory stimuli. In differentiated organoid cultures, cytomix induced a hierarchical sequence of changes beginning with loss of cell adhesion, redistribution of junctional proteins from the cell border, protein degradation which was accompanied by loss of epithelial barrier function. Cell viability was observed to decrease with time but was preserved when initial barrier changes were evident. In summary, differentiated intestinal organoid cultures represent an optimized human ex-vivo model which allows a comprehensive reflection to the situation observed in patients with intestinal inflammation. Our data suggest a hierarchical sequence of inflammation-induced intestinal barrier dysfunction starting with loss of intercellular adhesion, followed by redistribution and loss of junctional proteins resulting in reduced barrier function with consecutive epithelial death.

6.
BJS Open ; 6(5)2022 09 02.
Artigo em Inglês | MEDLINE | ID: mdl-36050906

RESUMO

BACKGROUND: Postsurgical hypoparathyroidism (PH) is the most frequent complication after thyroid surgery. The aim of this systematic review and meta-analysis is to summarize a unifying definition of PH and to elucidate the best possible approach for early detection of PH. METHODS: A systematic review of the literature according to the PICO framework using Embase, PUBMED and the Cochrane library was carried out on 1 December 2021 followed by analysis for risk of bias, data extraction and meta-analysis. All studies addressing the definition of postoperative hypoparathyroidism and/or diagnostic approaches for early detection and diagnosis were included. Case reports, commentaries, non-English articles, book chapters and pilot studies and reviews were excluded. RESULTS: From 13 704 articles, 188 articles were eligible for inclusion and further analysis. These articles provided heterogeneous definitions of PH. Meta-analysis revealed that postoperative measurements of parathormone (PTH) levels have a higher sensitivity and specificity than intraoperative PTH measurements to predict PH after thyroid surgery. None of the timeframes analysed after surgery within the first postoperative day (POD1) was superior to predict the onset of PH. PTH levels of less than 15 pg/ml and less than 10 pg/ml are both reliable threshold levels to predict the postoperative onset of PH. A relative reduction of mean(s.d.) PTH levels from pre- to postoperative values of 73 (standard deviation 11) per cent may also be predictive for the development of PH. The estimation of calcium levels on POD1 are recommended. CONCLUSION: PH is best defined as an undetectable or inappropriately low postoperative PTH level in the context of hypocalcaemia with or without hypocalcaemic symptoms. PTH levels should be measured after surgery within 24 h. Both threshold levels below 10 and 15 pg/ml or relative loss of PTH before/after thyroid surgery are reliable to predict the onset of PH.


Assuntos
Hipocalcemia , Hipoparatireoidismo , Humanos , Hipocalcemia/complicações , Hipocalcemia/etiologia , Hipoparatireoidismo/diagnóstico , Hipoparatireoidismo/etiologia , Glândulas Paratireoides , Hormônio Paratireóideo , Complicações Pós-Operatórias/diagnóstico , Complicações Pós-Operatórias/etiologia , Glândula Tireoide , Tireoidectomia/efeitos adversos
7.
BMC Med Inform Decis Mak ; 22(1): 178, 2022 07 05.
Artigo em Inglês | MEDLINE | ID: mdl-35791028

RESUMO

BACKGROUND: The emergency department has been a major focus for the implementation of Australia's national electronic health record, known as My Health Record. However, the association between use of My Health Record in the emergency department setting and patient care is largely unknown. The aim of this study was to explore the perspectives of emergency department clinicians regarding My Health Record use frequency, the benefits of My Health Record use (with a focus on patient care) and the barriers to use. METHODS: All 393 nursing, pharmacy, physician and allied health staff employed within the emergency department at a tertiary metropolitan public hospital in Melbourne were invited to participate in a web-based survey, between 1 May 2021 and 1 December 2021, during the height of the Delta and Omicron Covid-19 outbreaks in Victoria, Australia. RESULTS: Overall, the survey response rate was 18% (70/393). Approximately half of the sample indicated My Health Record use in the emergency department (n = 39, 56%, confidence interval [CI] 43-68%). The results showed that users typically only engaged with My Health Record less than once per shift (n = 15, 39%, CI 23-55%). Just over half (n = 19/39, 54%, CI 32-65%) of all participants who use My Health Record agreed they could remember a time when My Health Record had been critical to the care of a patient. Overall, clinicians indicated the biggest barrier preventing their use of My Health Record is that they forget to utilise the system. CONCLUSION: The results suggest that My Health Record has not been adopted as routine practice in the emergency department, by the majority of participants. Close to half of self-identified users of My Health Record do not associate use as being critical to patient care. Instead, My Health Record may only be used in scenarios that clinicians perceive will yield the greatest benefit-which clinicians in this paper suggest is patients with chronic and complex conditions. Further research that explores the predictors to use and consumers most likely to benefit from use is recommended-and strategies to socialise this knowledge and educate clinicians is desperately required.


Assuntos
COVID-19 , Registros Eletrônicos de Saúde , Serviço Hospitalar de Emergência , Humanos , Assistência ao Paciente , Inquéritos e Questionários
8.
BMC Surg ; 22(1): 92, 2022 Mar 09.
Artigo em Inglês | MEDLINE | ID: mdl-35272656

RESUMO

BACKGROUND: Accidental ingestion of fish bone is a common cause of otolaryngological emergency. Migration of the ingested bone into the thyroid gland, however, occurs very rarely. The associated clinical presentation, symptoms and duration of discomfort are also highly variable between patients and can be diagnostically challenging. CASE PRESENTATION: Here, we report the case of a 71-year-old female patient presenting with an ingested fish bone that migrated into the right thyroid lobe as a rare cause of suppurative thyroiditis with the clinical features of sepsis. We outline the diagnostic approach, peri- and intraoperative management as well as complications. It is proposed that besides endoscopy, imaging methods such as ultrasound or computed tomography may be necessary to verify the diagnosis and location of an ingested fish bone. Prompt surgical removal of the foreign body and resection of the infectious focus is recommended to minimize the risk of local inflammation, recurrent nerve lesions and septic complications arising from the spread of infection. CONCLUSION: Fish bone migration into the thyroid gland is an extremely rare event, the successful detection and surgical management of which can be achieved through a careful interdisciplinary approach.


Assuntos
Corpos Estranhos , Migração de Corpo Estranho , Tireoidite Supurativa , Animais , Feminino , Corpos Estranhos/complicações , Corpos Estranhos/diagnóstico , Corpos Estranhos/cirurgia , Migração de Corpo Estranho/complicações , Migração de Corpo Estranho/diagnóstico , Migração de Corpo Estranho/cirurgia , Humanos , Pescoço/patologia , Tireoidite Supurativa/diagnóstico , Tireoidite Supurativa/etiologia , Tireoidite Supurativa/cirurgia
9.
Emerg Med Australas ; 34(2): 157-163, 2022 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-34164911

RESUMO

OBJECTIVE: Recent studies suggest many patients with non-specific low back pain presenting to public hospital EDs receive low-value care. The primary aim was to describe management of patients presenting with low back pain to the ED of a private hospital in Melbourne, Australia, and received a final ED diagnosis of non-specific low back pain. We also determined predictors of hospital admission. METHODS: Retrospective review of patients who presented with low back pain and received a final ED diagnosis of non-specific low back pain to Cabrini Malvern ED in 2015. Demographics, lumbar spinal imaging, pathology tests and medications were extracted from hospital records. Multivariate logistic regression was used to determine independent predictors of hospital admission. RESULTS: Four hundred and fifty presentations were included (60% female); 238 (52.9%) were admitted to hospital. One hundred and seventy-seven (39.3%) patients received lumbar spine imaging. Two hundred and eighty (62.2%) patients had pathology tests and 391 (86.9%) received medications, which included opioids (n = 298, 66.2%), paracetamol (n = 219, 48.7%), NSAIDs (n = 161, 35.8%), benzodiazepines (n = 118, 26.2%) and pregabalin (n = 26, 5.8%). Predictors of hospital admission included older age (odds ratio [OR] 1.03, 95% confidence interval [CI] 1.02-1.05), arrival by ambulance (OR 2.03, 95% CI 1.06-3.90) and receipt of pathology tests (OR 3.32, 95% CI 2.01-5.49) or computed tomography scans (OR 1.86, 95% CI 1.12-3.11). CONCLUSION: We observed high rates of imaging, pathology tests and hospital admissions compared with previous public hospital studies, while medication use was similar. Implementation of strategies to optimise evidence-based ED care is needed to reduce low-value care and improve patient outcomes.


Assuntos
Dor Lombar , Austrália/epidemiologia , Serviço Hospitalar de Emergência , Feminino , Hospitais Privados , Humanos , Dor Lombar/diagnóstico , Masculino , Estudos Retrospectivos , Tomografia Computadorizada por Raios X
10.
Emerg Med J ; 39(5): 386-393, 2022 May.
Artigo em Inglês | MEDLINE | ID: mdl-34433615

RESUMO

OBJECTIVE: Patients, families and community members would like emergency department wait time visibility. This would improve patient journeys through emergency medicine. The study objective was to derive, internally and externally validate machine learning models to predict emergency patient wait times that are applicable to a wide variety of emergency departments. METHODS: Twelve emergency departments provided 3 years of retrospective administrative data from Australia (2017-2019). Descriptive and exploratory analyses were undertaken on the datasets. Statistical and machine learning models were developed to predict wait times at each site and were internally and externally validated. Model performance was tested on COVID-19 period data (January to June 2020). RESULTS: There were 1 930 609 patient episodes analysed and median site wait times varied from 24 to 54 min. Individual site model prediction median absolute errors varied from±22.6 min (95% CI 22.4 to 22.9) to ±44.0 min (95% CI 43.4 to 44.4). Global model prediction median absolute errors varied from ±33.9 min (95% CI 33.4 to 34.0) to ±43.8 min (95% CI 43.7 to 43.9). Random forest and linear regression models performed the best, rolling average models underestimated wait times. Important variables were triage category, last-k patient average wait time and arrival time. Wait time prediction models are not transferable across hospitals. Models performed well during the COVID-19 lockdown period. CONCLUSIONS: Electronic emergency demographic and flow information can be used to approximate emergency patient wait times. A general model is less accurate if applied without site-specific factors.


Assuntos
COVID-19 , Medicina de Emergência , COVID-19/epidemiologia , Controle de Doenças Transmissíveis , Serviço Hospitalar de Emergência , Humanos , Estudos Retrospectivos , Triagem , Listas de Espera
12.
Aust Health Rev ; 45(6): 690-695, 2021 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-34857071

RESUMO

Objective The COVID-19 pandemic in Australia coincided with an early trend of reduced visits to the emergency department (ED), but to determine which patients presented less requires closer evaluation. Identifying which patient groups are presenting less frequently will provide a better understanding of health care utilisation behaviours during a pandemic and inform healthcare providers of the potential challenges in managing these groups. Methods This single-centre retrospective study examined trends in presentations in 2020 to a private, mixed paediatric and adult ED in an inner city suburb within the state of Victoria that treats both COVID-19 and non-COVID-19 patients. The 2019 dataset was used as a reference baseline for comparison. All analyses were performed using baseline characteristics and triage data. Results The total number of visits to the ED dropped from 24 775 in 2019 to 22 754 in 2020, representing an overall reduction of 8%. Significant reductions in daily presentations and admissions from the ED were observed in the months immediately following the peak of the two COVID-19 waves in the state of Victoria. Visits by those in the 0- to 17-year age group, triage categories 4 and 5 and musculoskeletal presentations were also reduced for most of 2020. Gastrointestinal/abdominal and urological/renal presentations were reduced immediately after the first COVID-19 wave, whereas infectious diseases visits were reduced during and after the second COVID-19 wave. Conclusions These findings add to the growing body of evidence regarding emergency care underutilisation during the COVID-19 pandemic. Reduced private ED presentations were observed overall and in paediatric patients, lower acuity triage categories, musculoskeletal, abdominal/gastrointestinal and urological/renal presentations during the first wave, whereas infectious disease cases were reduced during the second wave. What is known about the topic? During the first and second waves of COVID-19 in Victoria, ED visits were reduced in the public sector across all diagnostic categories and all triage categories. The effect of the COVID-19 pandemic on private ED attendance is less well known. What does this paper add? Total visits to the private ED during the first and second waves of COVID-19 were reduced across all major diagnostic categories except cardiac presentations. During this same period, visits for triage categories 4 and 5 were significantly reduced. What are the implications for practitioners? ED underutilisation during the initial two waves of the COVID-19 pandemic is apparent in both the private and public sector. Patients should be encouraged not to delay seeking urgent medical care during the pandemic.


Assuntos
COVID-19 , Pandemias , Adulto , Criança , Serviço Hospitalar de Emergência , Humanos , Estudos Retrospectivos , SARS-CoV-2 , Vitória/epidemiologia
13.
Front Immunol ; 12: 756321, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34659262

RESUMO

Inflammation-induced reduction of intestinal desmosomal cadherin Desmoglein 2 (Dsg2) is linked to changes of tight junctions (TJ) leading to impaired intestinal epithelial barrier (IEB) function by undefined mechanisms. We characterized the interplay between loss of Dsg2 and upregulation of pore-forming TJ protein Claudin2. Intraperitoneal application of Dsg2-stablising Tandem peptide (TP) attenuated impaired IEB function, reduction of Dsg2 and increased Claudin2 in DSS-induced colitis in C57Bl/6 mice. TP blocked loss of Dsg2-mediated adhesion and upregulation of Claudin2 in Caco2 cells challenged with TNFα. In Dsg2-deficient Caco2 cells basal expression of Claudin2 was increased which was paralleled by reduced transepithelial electrical resistance and by augmented phosphorylation of AKTSer473 under basal conditions. Inhibition of phosphoinositid-3-kinase proved that PI-3-kinase/AKT-signaling is critical to upregulate Claudin2. In immunostaining PI-3-kinase dissociated from Dsg2 under inflammatory conditions. Immunoprecipitations and proximity ligation assays confirmed a direct interaction of Dsg2 and PI-3-kinase which was abrogated following TNFα application. In summary, Dsg2 regulates Claudin2 expression by sequestering PI-3-kinase to the cell borders in intestinal epithelium.


Assuntos
Claudina-2/metabolismo , Desmogleína 2/metabolismo , Regulação da Expressão Gênica/fisiologia , Mucosa Intestinal/metabolismo , Fosfatidilinositol 3-Quinases/metabolismo , Animais , Células CACO-2 , Permeabilidade da Membrana Celular/fisiologia , Colite , Humanos , Masculino , Camundongos , Camundongos Endogâmicos C57BL , Junções Íntimas/metabolismo
14.
Front Digit Health ; 3: 725300, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34713198

RESUMO

Objectives: Leverage log data to explore access to My Health Record (MHR), the national electronic health record of Australia, by clinicians in the emergency department. Materials and Methods: A retrospective analysis was conducted using secondary routinely-collected data. Log data pertaining to all patients who presented to the emergency department between 2019 and 2021 of a not-for-profit hospital (that annually observes 23,000 emergency department presentations) were included in this research. Attendance data and human resources data were linked with MHR log data. The primary outcome was a dichotomous variable that indicated whether the MHR of a patient was accessed. Logistic regression facilitated the exploration of factors (user role, day of the week, and month) associated with access. Results: My Health Record was accessed by a pharmacist, doctor, or nurse in 19.60% (n = 9,262) of all emergency department presentations. Access was dominated by pharmacists (18.31%, n = 8,656). All users demonstrated a small, yet significant, increase in access every month (odds ratio = 1.07, 95% Confidence interval: 1.06-1.07, p ≤ 0.001). Discussion: Doctors, pharmacists, and nurses are increasingly accessing MHR. Based on this research, substantially more pharmacists appear to be accessing MHR, compared to other user groups. However, only one in every five patients who present to the emergency department have their MHR accessed, thereby indicating a need to accelerate and encourage the adoption and access of MHR by clinicians.

15.
Genes Chromosomes Cancer ; 60(12): 827-832, 2021 12.
Artigo em Inglês | MEDLINE | ID: mdl-34338390

RESUMO

Familial gastrointestinal stromal tumors (GIST) are dominant genetic disorders that are caused by germline mutations of the type III receptor tyrosine kinase KIT. While sporadic mutations are frequently found in mastocytosis and GISTs, germline mutations of KIT have only been described in 39 families until now. We detected a novel germline mutation of KIT in exon 11 (p.Lys-558-Asn; K558N) in a patient from a kindred with several GISTs harboring different secondary somatic KIT mutations. Structural analysis suggests that the primary germline mutation alone is not sufficient to release the autoinhibitory region of KIT located in the transmembrane domain. Instead, the KIT kinase module becomes constitutively activated when K558N combines with different secondary somatic mutations. The identical germline mutation in combination with an additional somatic KIT mutation was detected in a second patient of the kindred with seminoma while a third patient within the family had a cutaneous mastocytosis. These findings suggest that the K558N mutation interferes with the juxtamembranous part of KIT, since seminoma and mastocystosis are usually not associated with exon 11 mutations.


Assuntos
Tumores do Estroma Gastrointestinal/genética , Mastocitose/genética , Proteínas Proto-Oncogênicas c-kit/genética , Seminoma/genética , Adolescente , Adulto , Criança , Pré-Escolar , Éxons/genética , Feminino , Tumores do Estroma Gastrointestinal/patologia , Predisposição Genética para Doença , Mutação em Linhagem Germinativa/genética , Humanos , Masculino , Mastocitose/patologia , Linhagem , Seminoma/patologia , Adulto Jovem
16.
Ann Emerg Med ; 78(1): 113-122, 2021 07.
Artigo em Inglês | MEDLINE | ID: mdl-33972127

RESUMO

STUDY OBJECTIVE: To derive and internally and externally validate machine-learning models to predict emergency ambulance patient door-to-off-stretcher wait times that are applicable to a wide variety of emergency departments. METHODS: Nine emergency departments provided 3 years (2017 to 2019) of retrospective administrative data from Australia. Descriptive and exploratory analyses were undertaken on the datasets. Statistical and machine-learning models were developed to predict wait times at each site and were internally and externally validated. RESULTS: There were 421,894 episodes analyzed, and median site off-load times varied from 13 (interquartile range [IQR], 9 to 20) to 29 (IQR, 16 to 48) minutes. The global site prediction model median absolute errors were 11.7 minutes (95% confidence interval [CI], 11.7 to 11.8) using linear regression and 12.8 minutes (95% CI, 12.7 to 12.9) using elastic net. The individual site model prediction median absolute errors varied from the most accurate at 6.3 minutes (95% CI, 6.2 to 6.4) to the least accurate at 16.1 minutes (95% CI, 15.8 to 16.3). The model technique performance was the same for linear regression, random forests, elastic net, and rolling average. The important variables were the last k-patient average waits, triage category, and patient age. The global model performed at the lower end of the accuracy range compared with models for the individual sites but was within tolerable limits. CONCLUSION: Electronic emergency demographic and flow information can be used to estimate emergency ambulance patient off-stretcher times. Models can be built with reasonable accuracy for multiple hospitals using a small number of point-of-care variables.


Assuntos
Ambulâncias/estatística & dados numéricos , Serviço Hospitalar de Emergência/estatística & dados numéricos , Aprendizado de Máquina , Tempo para o Tratamento/estatística & dados numéricos , Austrália , Humanos , Estudos Retrospectivos
17.
Health Inf Sci Syst ; 9(1): 19, 2021 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-33898021

RESUMO

PURPOSE: This study aimed to explore pharmacists' and physicians' perceptions of use, barriers to use and the healthcare outcomes associated with use of Australia's national personally controlled electronic health record-known as My Health Record-in the emergency department. METHODS: A mixed methods approach was deployed, including surveys and individual semi-structured interviews. All physicians and pharmacists who work in the emergency department at Cabrini Health (a non-for-profit healthcare provider in Victoria, Australia) were invited to participate. Due to the timing of elective blocks, physician trainees were excluded from interviews. RESULTS: A total of 40 emergency medicine clinicians responded to the survey. Over 50% (n = 22) of all respondents had used My Health Record in the emergency department at least once. A total of 18 clinicians participated in the semi-structured interviews, which led to the identification of three themes with multiple sub-themes regarding My Health Record: (1) benefits; (2) effectiveness; and; (3) barriers. CONCLUSION: Participants reported My Health Record use in the emergency department delivers efficiencies for clinicians and has a heightened utility for complex patients, consistent with previous research conducted outside of the Australian setting. Barriers to use were revealed: outdated content, a lack of trust, a low perception of value, no patient record and multiple medical record systems. The participants in this study highlighted that training and awareness raising is needed in order to improve My Health Record use in the emergency department, a need stressed by physician's. Further observational research is required to explores meaningful MHR use at scale.

18.
Int J Mol Sci ; 22(4)2021 Feb 14.
Artigo em Inglês | MEDLINE | ID: mdl-33672854

RESUMO

Enteric glial cells (EGCs) of the enteric nervous system are critically involved in the maintenance of intestinal epithelial barrier function (IEB). The underlying mechanisms remain undefined. Glial cell line-derived neurotrophic factor (GDNF) contributes to IEB maturation and may therefore be the predominant mediator of this process by EGCs. Using GFAPcre x Ai14floxed mice to isolate EGCs by Fluorescence-activated cell sorting (FACS), we confirmed that they synthesize GDNF in vivo as well as in primary cultures demonstrating that EGCs are a rich source of GDNF in vivo and in vitro. Co-culture of EGCs with Caco2 cells resulted in IEB maturation which was abrogated when GDNF was either depleted from EGC supernatants, or knocked down in EGCs or when the GDNF receptor RET was blocked. Further, TNFα-induced loss of IEB function in Caco2 cells and in organoids was attenuated by EGC supernatants or by recombinant GDNF. These barrier-protective effects were blunted when using supernatants from GDNF-deficient EGCs or by RET receptor blockade. Together, our data show that EGCs produce GDNF to maintain IEB function in vitro through the RET receptor.


Assuntos
Sistema Nervoso Entérico/metabolismo , Fator Neurotrófico Derivado de Linhagem de Célula Glial/metabolismo , Mucosa Intestinal/metabolismo , Neuroglia/metabolismo , Animais , Células CACO-2 , Células Cultivadas , Técnicas de Cocultura , Meios de Cultivo Condicionados/farmacologia , Sistema Nervoso Entérico/efeitos dos fármacos , Fator Neurotrófico Derivado de Linhagem de Célula Glial/genética , Fator Neurotrófico Derivado de Linhagem de Célula Glial/farmacologia , Humanos , Mucosa Intestinal/efeitos dos fármacos , Intestino Delgado/citologia , Intestino Delgado/efeitos dos fármacos , Masculino , Camundongos Endogâmicos C57BL , Camundongos Knockout , Camundongos Transgênicos , Neuroglia/efeitos dos fármacos , Permeabilidade/efeitos dos fármacos , Proteínas Recombinantes/farmacologia , Fator de Necrose Tumoral alfa/farmacologia
19.
Emerg Med Australas ; 33(1): 145-146, 2021 02.
Artigo em Inglês | MEDLINE | ID: mdl-33369140
20.
Emerg Med Australas ; 33(3): 425-433, 2021 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-32985795

RESUMO

OBJECTIVE: EDs have the potential ability to predict patient wait times and to display this to patients and other stakeholders. Little is known about whether consumers and stakeholders would want this information and how wait time predictions might be used. The aim of the present study was to gain perspectives from consumers and health services personnel regarding the concept of emergency wait time visibility. METHODS: We conducted a qualitative interview and focus group study in 2019. Participants included emergency medicine patients, families, paramedics, well community members, and hospital/paramedic administrators from multiple EDs and organisations in Victoria, Australia. Transcripts were coded and themes presented. RESULTS: One focus group and 103 semi-structured interviews were conducted in 2019 including 32 patients, 22 carers/advocates and 21 paramedics in the ED; 20 health service administrators (paramedic and hospital) and 15 community members. Consumers and paramedics face physical and psychological difficulties when wait times are not visible. Consumers believe about a 2-h wait is tolerable, beyond this most begin to consider alternative strategies for seeking care. Consumers want to see triage to doctor times; paramedics want door-to-off stretcher times (for all possible transport destinations); with 47 of 50 consumers and 30 of 31 paramedics potentially using this information. About 28 of 50 consumers would use times to inform facility or provider choice, another 19 of 50 want information once in the waiting room. During prolonged waits, 51 of 52 consumers would continue to seek care. CONCLUSIONS: Consumers and paramedics want wait time information visibility. They would use the information in a variety of ways, both pre-hospital and while waiting for care.

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