673 results match your criteria: "Sydney Medical School-Nepean[Affiliation]"

Limited research has been conducted in Asian elderly patients (aged 65 years and above) for in-hospital mortality prediction after an ST-segment elevation myocardial infarction (STEMI) using Deep Learning (DL) and Machine Learning (ML). We used DL and ML to predict in-hospital mortality in Asian elderly STEMI patients and compared it to a conventional risk score for myocardial infraction outcomes. Malaysia's National Cardiovascular Disease Registry comprises an ethnically diverse Asian elderly population (3991 patients).

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Background: Splanchnic-cerebral oxygenation ratio (SCOR), the ratio of splanchnic tissue oxygen (StO s) to simultaneously measured cerebral tissue oxygen (StO c), has been described as a surrogate to detect impaired splanchnic oxygenation associated with hypoperfusion status such as necrotizing enterocolitis. This concept is based on the presumption that any change in SCOR indicates a corresponding change in splanchnic tissue oxygenation as the numerator, whereas cerebral tissue oxygenation as the denominator remains stable. However, it is questionable to utilise this concept to detect splanchnic oxygenation changes in the context of packed red blood cell transfusion (PRBCT).

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Dexmedetomidine and Propofol Sedation in Critically Ill Patients and Dose-associated 90-Day Mortality: A Secondary Cohort Analysis of a Randomized Controlled Trial (SPICE III).

Am J Respir Crit Care Med

April 2023

Australian and New Zealand Intensive Care Research Centre, School of Public Health and Preventive Medicine, Monash University, Melbourne, Victoria, Australia.

The SPICE III (Sedation Practice in Intensive Care Evaluation) trial reported significant heterogeneity in mortality with dexmedetomidine treatment. Supplemental propofol was commonly used to achieve desirable sedation. To quantify the association of different infusion rates of dexmedetomidine and propofol, given in combination, with mortality and to determine if this is modified by age.

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Periodontitis and Preeclampsia in Pregnancy: A Systematic Review and Meta-Analysis.

Matern Child Health J

December 2022

Sydney Medical School Nepean and Charles Perkins Center Nepean, The University of Sydney, Sydney, NSW, Australia.

Objectives: A conflicting body of evidence suggests localized periodontal inflammation spreads systemically during pregnancy inducing adverse pregnancy outcomes. This systematic review and meta-analysis aim to specifically evaluate the relationship between periodontitis and preeclampsia.

Methods: Electronic searches were carried out in Medline, Pubmed, Embase, Lilacs, Cochrane Controlled Clinical Trial Register, CINAHL, ClinicalTrials.

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Short-Term Exposure to Sulfur Dioxide and Nitrogen Monoxide and Risk of Out-of-Hospital Cardiac Arrest.

Heart Lung Circ

January 2023

Menzies Institute for Medical Research, University of Tasmania, Hobart, Tas, Australia; Department of Cardiology, Graduate School of Medicine, Gunma University, Maebashi, Gunma, Japan; Sydney Medical School Nepean, Faculty of Medicine and Health, Charles Perkins Centre Nepean, The University of Sydney, Sydney, NSW, Australia. Electronic address:

Background & Aims: Over the past decades, particulate matter (PM), especially fine PM <2.5 μm in aerodynamic diameter (PM) has been a major research focus. However, the air pollutant is a mixture of gases or vapour-phase compounds, such as carbon monoxide (C), nitrogen oxides (NO), photochemical oxidants (Ox), and sulfur dioxide (SO).

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Article Synopsis
  • The study compares the #Enzian classification and the revised American Society for Reproductive Medicine (rASRM) stages in assessing the extent of endometriosis in women undergoing radical surgery for deep endometriosis.
  • Findings show that while the severity of endometriotic lesions and adhesions generally increases with higher rASRM stages, deep endometriosis can also occur in early stages, leading to potential underestimation of disease severity.
  • The research involved 735 women and indicates that many with rASRM stage 1 had significant deep endometriosis, highlighting the need for better classification methods.
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Effectiveness of ultrasound for endometriosis diagnosis.

Curr Opin Obstet Gynecol

October 2022

Acute Gynaecology, Early Pregnancy and Advanced Endosurgery Unit, Sydney Medical School Nepean, University of Sydney, Nepean Hospital, Sydney, New South Wales, Australia.

Purpose Of Review: Endometriosis is a chronic benign gynaecological condition characterized by pelvic pain, subfertility and delay in diagnosis. There is an emerging philosophical shift from gold standard histopathological diagnosis through laparoscopy to establishing diagnosis through noninvasive imaging.

Recent Findings: The ENZIAN classification system was updated in 2021 to be suitable for both diagnostic imaging and laparoscopy.

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Alternatively Spliced Isoforms of the P2X7 Receptor: Structure, Function and Disease Associations.

Int J Mol Sci

July 2022

Sydney Medical School Nepean, Faculty of Medicine and Health, The University of Sydney, Nepean Hospital, Penrith, NSW 2750, Australia.

The P2X7 receptor (P2X7R) is an ATP-gated membrane ion channel that is expressed by multiple cell types. Following activation by extracellular ATP, the P2X7R mediates a broad range of cellular responses including cytokine and chemokine release, cell survival and differentiation, the activation of transcription factors, and apoptosis. The P2X7R is made up of three P2X7 subunits that contain specific domains essential for the receptor's varied functions.

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Secretory IgA is a key mucosal component ensuring host-microbiota mutualism. Here we use nutritional geometry modelling in mice fed 10 different macronutrient-defined, isocaloric diets, and identify dietary protein as the major driver of secretory IgA production. Protein-driven secretory IgA induction is not mediated by T-cell-dependent pathways or changes in gut microbiota composition.

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Background: It is well established that counter-regulation to hypoxia follows a hierarchical pattern, with brain-sparing in preference to peripheral tissues. In contrast, it is unknown if the same hierarchical sequence applies to recovery from hypoxia after correction of anemia with packed red blood cell transfusion (PRBCT).

Objective: To understand the chronology of cerebral and splanchnic tissue oxygenation resulting after correction of anemia by PRBCT in preterm infants using near-infrared spectroscopy (NIRS).

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An Ultrasound-based Prediction Model to Predict Ureterolysis during Laparoscopic Endometriosis Surgery.

J Minim Invasive Gynecol

October 2022

Acute Gynaecology, Early Pregnancy and Advanced Endoscopy Surgery Unit, Sydney Medical School Nepean, Nepean Hospital, University of Sydney, Penrith, New South Wales, Australia.

Study Objective: To develop a model, including clinical features and ultrasound findings, to predict the need for ureterolysis (i.e., dissection of the ureter) during laparoscopy for endometriosis.

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'Seeing is believing': arguing for diagnostic laparoscopy as a diagnostic test for endometriosis.

Reprod Fertil

July 2022

Acute Gynaecology, Early Pregnancy and Advanced Endosurgery Unit, Nepean Hospital, Sydney Medical School Nepean, University of Sydney, Sydney, New South Wales, Australia.

Endometriosis is a benign disease that can cause pain and infertility in women. Debate exists over how endometriosis should best be diagnosed. On one hand, endometriosis can be diagnosed by directly examining pelvic anatomy via a surgical procedure known as diagnostic laparoscopy.

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Does Cystocele Type Vary Between Vaginally Parous and Nulliparous Women?

J Ultrasound Med

April 2023

Department of Obstetrics, Gynaecology & Neonatology, University of Sydney, Sydney, NSW, Australia.

Objectives: To evaluate whether cystocele type varies with vaginal parity.

Methods: Retrospective analysis of 464 vaginally nulliparous women seen at 2 urogynecology units between November 2006 and November 2019. A control group consisted of 871 vaginally parous women seen between July 2017 and November 2019.

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Introduction: Clinical studies supported by immunological data indicate early life intervention strategies to be promising in reducing the growing global burden of food allergies. The events that predispose to food allergy, including the induction of allergen-specific immune responses, appear to be initiated early in development. Early exposure to food allergens in utero and via breast milk is likely to be important in initiating oral tolerance.

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Regulatory T cells (Tregs) control immune system activity and inhibit inflammation. While, in mice, short-chain fatty acids (SCFAs) are known to be essential regulators of naturally occurring and in vitro induced Tregs (iTregs), data on their contribution to the development of human iTregs are sparse, with no reports of the successful SCFAs-augmented in vitro generation of fully functional human iTregs. Likewise, markers undoubtedly defining human iTregs are missing.

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Introduction And Hypothesis: Obstructed defecation (OD) is often associated with trauma to pelvic connective tissue and nerves sustained during pregnancy and childbirth. Although there are multiple potential etiologies of defecatory dysfunction, the pathophysiology of this symptom complex is not well understood. The purpose of this study is to determine the role of parity in the development of obstructed defecatory symptoms in women with normal anorectal anatomy in a search for evidence of a presumptive neuropathic effect of pregnancy and childbirth.

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Diagnostic accuracy of transvaginal ultrasound for detection of endometriosis using International Deep Endometriosis Analysis (IDEA) approach: prospective international pilot study.

Ultrasound Obstet Gynecol

September 2022

Acute Gynaecology, Early Pregnancy and Advanced Endosurgery Unit, Nepean Hospital, Sydney Medical School Nepean, University of Sydney, Sydney, NSW, Australia.

Objective: To evaluate the diagnostic accuracy of transvaginal ultrasound (TVS) in predicting deep endometriosis (DE) following the International Deep Endometriosis Analysis (IDEA) consensus methodology.

Methods: This was an international multicenter prospective diagnostic accuracy study involving eight centers across six countries (August 2018-November 2019). Consecutive participants with endometriosis suspected based on clinical symptoms or historical diagnosis of endometriosis were included.

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Purpose Of Review: This review aims to provide a contemporary perspective on the role of myocardial strain imaging in the management of patients on cardiotoxic therapy.

Recent Findings: Risk/benefit evaluation of cardiotoxic cancer treatment remains challenging, weighing life-saving cancer therapy with fatal cardiac dysfunction potentially caused by cancer therapy. The serial change in left ventricular ejection fraction (LVEF) was conventionally used for the detection of cancer therapy-related cardiac dysfunction (CTRCD).

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Clinical assessment of pelvic organ prolapse by consecutive cough maneuver.

Int Urogynecol J

January 2023

Department of Obstetrics, Gynaecology & Neonatology, Sydney Medical School Nepean, University of Sydney, 62 Derby Street, Kingswood, NSW, 2747, Australia.

Introduction And Hypothesis: Staging of pelvic organ prolapse (POP) is important in clinical practice and research. Pelvic organ descent on Valsalva can be confounded by levator co-activation, which may be avoided by assessment on coughing. We evaluated the performance of a three consecutive coughs maneuver in the assessment of POP compared with standardised 6-second Valsalva.

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Background: It is unresolved whether low haemoglobin (Hb) and symptoms of anaemia reflect oxygen delivery-consumption imbalances (fractional tissue oxygen extraction [FTOE]). Here, we test whether pre-transfusion Hb and symptoms of anaemia correlate with pre-transfusion cerebral and splanchnic FTOE.

Methods: This prospective cohort study was carried out between Sept 1, 2014 and Nov 30, 2016 at Nepean Hospital, Sydney, Australia.

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Brilliant smile.

J Paediatr Child Health

April 2022

Department of Paediatrics, Nepean Hospital, Penrith, New South Wales, Australia.

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International Urogynecological Consultation (IUC): pathophysiology of pelvic organ prolapse (POP).

Int Urogynecol J

July 2022

Department of Gynecology, Sector of Urogynecology, Universidade Federal de São Paulo, São Paulo, SP, Brazil.

Introduction And Hypothesis: This manuscript is the International Urogynecology Consultation (IUC) on pelvic organ prolapse (POP) chapter one, committee three, on the Pathophysiology of Pelvic Organ Prolapse assessing genetics, pregnancy, labor and delivery, age and menopause and animal models.

Materials And Methods: An international group of urogynecologists and basic scientists performed comprehensive literature searches using pre-specified terms in selected biomedical databases to summarize the current knowledge on the pathophysiology of the development of POP, exploring specifically factors including (1) genetics, (2) pregnancy, labor and delivery, (3) age and menopause and (4) non-genetic animal models. This manuscript represents the summary of three systematic reviews with meta-analyses and one narrative review, to which a basic scientific comment on the current understanding of pathophysiologic mechanisms was added.

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Objectives: This study aimed to evaluate the impact of different periodontal treatment strategies during pregnancy on perinatal outcomes.

Study Selection: This systematic review and meta-analysis of clinical trials was conducted according to PRISMA guidelines to assess the effect of mouthwash in addition to scaling and root planning (SRPM) on pregnancy outcomes, including preterm birth, low birth weight, gestational age, and birth weight. Pooled risk ratios (RR), mean differences (MD), and 95% confidence intervals (CI) were calculated using the random effect model.

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The load dependence of global longitudinal strain (GLS) means that changes in systolic blood pressure (BP) between visits may confound the diagnosis of cancer-treatment-related cardiac dysfunction (CTRCD). We sought to determine whether the estimation of myocardial work, which incorporates SBP, could overcome this limitation. In this case-control study, 44 asymptomatic patients at risk of CTRCD underwent echocardiography at baseline and after oncologic treatment.

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