Publications by authors named "Steven Boyages"

Summary: In most developed countries, breast carcinoma is the most common malignancy in women and while thyroid cancer is less common, its incidence is almost three to five times greater in women than in men. Since 1966, studies have demonstrated an association between thyroid and breast cancer and despite these studies, the mechanism/s by which they are related, remains unclear. We present a case of a 56-year-old lady who initially presented in 2014 with a screen detected left breast carcinoma but was subsequently found to have occult metastatic thyroid cancer to the axilla, diagnosed from a sentinel node biopsy from the primary breast procedure.

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Autosomal dominant hypocalcaemia type 1 (ADH1) is a rare familial disorder characterised by low serum calcium and low or inappropriately normal serum PTH. It is caused by activating CASR mutations, which produces a left-shift in the set point for extracellular calcium. We describe an Australian family with a novel heterozygous missense mutation in CASR causing ADH1.

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Clozapine (CZ) has superior efficacy to other antipsychotic agents in the treatment of schizophrenia and has been extensively used in clinical practice. ATP-binding cassette (ABC) transporter proteins are responsible for the distribution of various molecules as well as drugs across extracellular and intracellular membranes, including the blood-brain barrier. Genetic variations in these proteins can account for differences in treatment response.

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Article Synopsis
  • Clozapine (CZ) is an effective treatment for resistant schizophrenia, but its use is limited due to side effects like weight gain and diabetes.
  • A study of 187 patients found that 39% carried the CYP2C19*17 genetic variant, which was linked to higher levels of norclozapine (NCZ) and lower blood glucose and HbA1c levels.
  • Patients with the CYP2C19*17 variant experienced lower rates of diabetes and greater clinical improvement, indicating that genetic factors may influence response to clozapine treatment and metabolic side effects.
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Objective: To determine whether Care Navigation (CN), a nurse-led hospital-based coordinated care intervention, reduced the use of hospital services and improved quality of life for patients with chronic illness.

Design: Randomised controlled trial; participants were allocated to CN or standard care.

Participants And Setting: Patients with chronic illness presenting to the emergency department of Nepean Hospital, Sydney, New South Wales.

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Background: In urban Australia, patients with serious and continuing illnesses make frequent use of hospital emergency department (ED) services. However, the risk factors for hospital utilisation among the broad population of people with chronic illness are not well known. The aim of this study was to assess the predictors of hospital utilisation (either inpatient admissions or ED visits) in a cohort of 308 patients with chronic illness.

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Background: Chronic illness is a significant driver of the global burden of disease and associated health care costs. People living with severe chronic illness are heavy users of acute hospital services; better coordination of their care could potentially improve health outcomes while reducing hospital use. The Care Navigation trial will evaluate an in-hospital coordinated care intervention on health service use and quality of life in chronically ill patients.

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Background: Clear, accurate, and complete reporting of postsurgical pathology is crucial for the correct evaluation and management of thyroid cancer patients. This study aimed to describe the completeness, as defined by international guidelines, of pathology reporting in a cohort of newly diagnosed thyroid cancer patients in New South Wales (NSW) and to identify factors associated with the completeness of reports.

Methods: Postsurgical pathology reports, held by the NSW Central Cancer Registry, for 448 thyroid cancer patients were reviewed.

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Context: Seasonal variation in 25-hydroxyvitamin D [25OHD] status and its relationship to gender, age, socioeconomic and geographic determinants in Australians has not been described in large biomedical sampling cohorts.

Objectives: To analyse 25OHD levels in all primary tests undertaken consecutively in a 2-year period to determine the prevalence of 25OHD deficiency and its relation to patient setting, gender, age, season, urban or rural residency, socioeconomic status, latitude and longitude.

Design: We assessed 24 819 ambulatory and inpatient samples taken from the largest reference laboratory in NSW, Australia between 01 July 2008 and 30 July 2010.

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Warfarin is a widely used anticoagulant in the treatment and prevention of thrombosis, in the treatment for chronic atrial fibrillation, mechanical valves, pulmonary embolism, and dilated cardiomyopathy. It is tasteless and colorless, was used as a poison, and is still marketed as a pesticide against rats and mice. Several long-acting warfarin derivatives-superwarfarin anticoagulants-such as brodifacoum, diphenadione, chlorophacinone, bromadiolone, are used as pesticides and can produce profound and prolonged anticoagulation.

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Background: Over the past few decades, an increase in the incidence of thyroid cancer has been recorded in many countries around the world including Australia. Heightened medical surveillance and increased technological sensitivity could be contributing to greater detection of asymptomatic disease.

Objectives: To describe the pathways to diagnosis of thyroid cancer for a cohort of newly diagnosed patients in New South Wales (NSW), Australia, and compare these pathways by age, sex, place of residence, ethnic background, medical insurance status, and disease characteristics.

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Article Synopsis
  • Shorter reperfusion times in STEMI patients lead to better health outcomes, with prehospital triage via ambulance showing significant benefits.
  • Patients triaged in the field experienced a median decrease in door-to-balloon times compared to those at community hospitals and interventional centers.
  • This method also resulted in higher left ventricular ejection fraction and lower 30-day mortality rates, ultimately suggesting that quick response times enhance both immediate and longer-term survival for STEMI patients.
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*Clinical process redesign has enabled significant improvements in the delivery of health care services in emergency departments and elective surgery programs in New South Wales and at Flinders Medical Centre in South Australia, with tangible benefits for patients and staff. *The principles used in clinical process redesign are not new; they have been applied in other industries with significant gains for many years, but have only recently been introduced into health care systems. *Through experience with clinical process redesign, we have learnt much about the factors critical to the success of implementing and sustaining this process in the health care setting.

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Objectives: To determine whether pregnant women and their newborns show evidence of iodine deficiency, and to examine the correlation between maternal urine iodine concentration (UIC) and newborn thyroid-stimulating hormone (TSH) level.

Design: A cross-sectional study.

Setting: Hospital antenatal care services (March-May 2004) and private obstetrician clinics (June 2004) in the Central Coast area of New South Wales.

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Hyperglycemia in patients admitted to hospital with myocardial infarction has been associated with adverse outcomes. However, with the improvements in survival seen in the reperfusion era, the glycometabolic state of patients presenting with acute myocardial infarction (AMI) is often given a low priority. The aim of this study was to determine if hyperglycemia remains a significant predictor of cardiac mortality and morbidity in the reperfusion era.

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Objective: To determine the prevalence of iodine deficiency in primary school children in an Australian urban population.

Design And Setting: A cross-sectional survey of school children aged 5-13 years attending a public school on the Central Coast of New South Wales in November 2000.

Participants: 324 (70%) of the 465 children enrolled in the school (180 boys; 144 girls).

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Even mild iodine deficiency during early childhood and pregnancy has the potential to impair neurological development. Often considered a problem of developing nations, a number of industrialized countries are at risk of deficiency. Despite past success with intentional and unintentional iodine fortification, recurrence of deficiency is an ever-present risk.

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