Open Access. Powered by Scholars. Published by Universities.®

Medicine and Health Sciences Commons

Open Access. Powered by Scholars. Published by Universities.®

Articles 31 - 60 of 172

Full-Text Articles in Medicine and Health Sciences

Statistical Aspects Of Equivalent Dose And Error Calculation And Display In Osl Dating: An Overview And Some Recommendations, R Galbraith, Richard Roberts Mar 2013

Statistical Aspects Of Equivalent Dose And Error Calculation And Display In Osl Dating: An Overview And Some Recommendations, R Galbraith, Richard Roberts

Richard G Roberts

All Quaternary dating methods involve the measurement of one or more variables to estimate the age of a sample. Each measured quantity has an associated error and uncertainty, and may also be subject to natural variation. We review the statistical estimation of such uncertainties and variation for comparing and interpreting age estimates, with specific reference to the estimation of equivalent dose (De) values in the optically stimulated luminescence (OSL) dating of sediments. We discuss statistical aspects of OSL signal and background estimation, the determination of De values for multi-grain aliquots and individual mineral grains from the same and different samples, …


Distinguishing Dose Populations In Sediment Mixtures: A Test Of Single-Grain Optical Dating Procedures Using Mixtures Of Laboratory-Dosed Quartz, Richard Roberts, R Galbraith, Hiroyuki Yoshida, G Laslett, Jon M Olley Mar 2013

Distinguishing Dose Populations In Sediment Mixtures: A Test Of Single-Grain Optical Dating Procedures Using Mixtures Of Laboratory-Dosed Quartz, Richard Roberts, R Galbraith, Hiroyuki Yoshida, G Laslett, Jon M Olley

Richard G Roberts

No abstract provided.


The Last Australian Megafauna, Richard Roberts Mar 2013

The Last Australian Megafauna, Richard Roberts

Richard G Roberts

No abstract provided.


Progress Towards Single-Grain Optical Dating Of Fossil Mud-Wasp Nests And Associated Rock Art In Northern Australia, Hiroyuki Yoshida, Richard Roberts, Jon M Olley Mar 2013

Progress Towards Single-Grain Optical Dating Of Fossil Mud-Wasp Nests And Associated Rock Art In Northern Australia, Hiroyuki Yoshida, Richard Roberts, Jon M Olley

Richard G Roberts

No abstract provided.


Optical Dating Of Quartz Sediments And Accelerator Mass Spectrometry 14c Dating Of Bone Gelatin And Moa Eggshell: A Comparison Of Age Estimates For Non-Archaeological Deposits In New Zealand, Richard Holdaway, Richard Roberts, Nancy Beavan-Athfield, Jon M Olley, Trevor Worthy Mar 2013

Optical Dating Of Quartz Sediments And Accelerator Mass Spectrometry 14c Dating Of Bone Gelatin And Moa Eggshell: A Comparison Of Age Estimates For Non-Archaeological Deposits In New Zealand, Richard Holdaway, Richard Roberts, Nancy Beavan-Athfield, Jon M Olley, Trevor Worthy

Richard G Roberts

No abstract provided.


Extending The Range Of Optical Dating Using Single 'Supergrains' Of Quartz, Hiroyuki Yoshida, Richard Roberts, Jon M Olley, G Laslett, R Galbraith Mar 2013

Extending The Range Of Optical Dating Using Single 'Supergrains' Of Quartz, Hiroyuki Yoshida, Richard Roberts, Jon M Olley, G Laslett, R Galbraith

Richard G Roberts

No abstract provided.


2002 Progress Report Of The Eip Project, G Kumar, R Bednarik, A Watchman, Richard Roberts, E Lawson, C Patterson Mar 2013

2002 Progress Report Of The Eip Project, G Kumar, R Bednarik, A Watchman, Richard Roberts, E Lawson, C Patterson

Richard G Roberts

No abstract provided.


Video-Recorded Usability Testing Of A Web-Based Self-Administered Dietary Assessment, Yasmine Probst, David Steel, Linda Tapsell Dec 2012

Video-Recorded Usability Testing Of A Web-Based Self-Administered Dietary Assessment, Yasmine Probst, David Steel, Linda Tapsell

Professor David Steel

No abstract provided.


Developing A Process Of Continuous Quality Improvement In Medical School Assessment Processes: Lessons From One School, Alison Jones, Ian Wilson, Dorothy Keefe Sep 2012

Developing A Process Of Continuous Quality Improvement In Medical School Assessment Processes: Lessons From One School, Alison Jones, Ian Wilson, Dorothy Keefe

Alison L Jones

Introduction: Setting high quality assessments for medical students can be a resource intensive exercise. This study explored the feasibility of coordinating and rationalising the use of expertise to set assessments and to raise the standard of those assessments. Method: A literature review on staff development for assessment was undertaken and the governance structure for assessment design and monitoring in our institution was explored. A manual was developed to outline issues around assessment and processes for improving assessments and this was distributed to key personnel involved in the assessment setting process. A two-day examination setting workshop was organised and evaluated. A …


Relative Safety Of Hyperinsulinaemia/Euglycaemia Therapy In The Management Of Calcium Channel Blocker Overdose: A Prospective Observational Study, S Greene, I Gawarammana, David Wood, Alison Jones, Paul Dargan Sep 2012

Relative Safety Of Hyperinsulinaemia/Euglycaemia Therapy In The Management Of Calcium Channel Blocker Overdose: A Prospective Observational Study, S Greene, I Gawarammana, David Wood, Alison Jones, Paul Dargan

Alison L Jones

Objective: To examine the clinical safety of hyperinsulinaemia/ euglycaemia therapy (HIET) in calcium channel blocker (CCB) poisoning. Design: A prospective observational study examining biochemical and clinical outcomes of a HIET protocol administered under local poisons centre guidance. Setting: Critical care settings. Patients: Seven patients with significant CCB toxicity [systolic blood pressure (BP) < 90 mmHg] treated with HIET. Interventions: HIET was commenced after correction of any pre-existing hypoglycaemia ([blood glucose]< 65 mg/dl) or hypokalaemia ([K+] < 3.5 mmol/l). A quantity of 50 ml of 50% intravenous dextrose was followed by a loading dose (1 unit/kg) of intravenous short-acting insulin and an insulin maintenance infusion (0.5–2.0 units/kg/h). Euglycaemia was maintained using 5–10% dextrose infusions. Potassium was maintained within low normal range (3.8–4.0 mmol/l). Measurements and results: Six patients survived. All patients received fluids, calcium, and conventional inotropes. Three patients (who all ingested diltiazem) received an insulin-loading dose; all experienced a significant sustained rise in systolic BP (> 10 mmHg) during the first hour of HIET. Systolic BP did not increase significantly in four patients who did not receive insulin loading. Single episodes of non-clinically significant biochemical hypoglycaemia and hypokalaemia were recorded in one and two patients respectively. Hypoglycaemia was not recorded in any patient administered …


Acceptance Of Pandemic (H1n1) 2009 Influenza Vaccination By The Australian Public, K Eastwood, D Durrheim, Alison Jones, Michelle Butler Sep 2012

Acceptance Of Pandemic (H1n1) 2009 Influenza Vaccination By The Australian Public, K Eastwood, D Durrheim, Alison Jones, Michelle Butler

Alison L Jones

To investigate the Australian public’s expectations, concerns and willingness to accept vaccination with the pandemic (H1N1) 2009 influenza vaccine. Design, setting and participants: A computer-assisted telephone interview survey was conducted between 20 August and 11 September 2009 by trained professional interviewers to study issues relating to vaccine uptake and perceived safety. The sample comprised 1155 randomly selected representative adults who had participated in a 2007 national study exploring knowledge and perceptions of pandemic influenza. Main outcome measures: Likely acceptance of pandemic (H1N1) 2009 vaccination, factors associated with acceptance, and respondents’ willingness to share Australian vaccine with neighbouring developing countries. Results: …


Is Cocaine Use Recognised As A Risk Factor For Acute Coronary Syndrome By Doctors In The Uk?, David Wood, Duncan Hill, Awini Gunasekera, S Greene, Alison Jones, Paul Dargan Sep 2012

Is Cocaine Use Recognised As A Risk Factor For Acute Coronary Syndrome By Doctors In The Uk?, David Wood, Duncan Hill, Awini Gunasekera, S Greene, Alison Jones, Paul Dargan

Alison L Jones

Background: Cocaine is a sympathomimetic agent that can cause coronary artery vasospasm leading to myocardial ischaemia, acute coronary syndrome and acute myocardial infarction (ACS/AMI). The management of cocaine-induced ACS/AMI is different to classical atheromatous ACS/MI, because the mechanisms are different. Methods: Knowledge study—Junior medical staff were given a scenario of a patient with ACS and asked to identify potential risk factors for ACS and which ones they routinely asked about in clinical practice. Retrospective study—Retrospective notes reviews of patients with suspected and proven (elevated troponin T concentration) ACS were undertaken to determine the recording of cocaine use/non-use in clinical notes. …


Mercury Contamination Incident, R Maclehose, G Pitt, S Will, Alison Jones, L Duane, S Flaherty, D Hannant, B Stuttard, A Silverwood, K Snee, V Murray, Q Syed, Ivan House, M Bellis Sep 2012

Mercury Contamination Incident, R Maclehose, G Pitt, S Will, Alison Jones, L Duane, S Flaherty, D Hannant, B Stuttard, A Silverwood, K Snee, V Murray, Q Syed, Ivan House, M Bellis

Alison L Jones

No abstract provided.


Haemodynamic Parameters Predicting Variceal Haemorrhage And Survival In Alcoholic Cirrhosis, A Stanley, I Robinson, E Forrest, Alison Jones, P Hayes Sep 2012

Haemodynamic Parameters Predicting Variceal Haemorrhage And Survival In Alcoholic Cirrhosis, A Stanley, I Robinson, E Forrest, Alison Jones, P Hayes

Alison L Jones

No abstract provided.


Selective Iga Deficiency, Hypothyroidism And Congenital Lymphoedema, Alison Jones, D Webb Sep 2012

Selective Iga Deficiency, Hypothyroidism And Congenital Lymphoedema, Alison Jones, D Webb

Alison L Jones

The occurrence of selective IgA deficiency and hypothyroidism with congenital lymphoedema has never previously been documented, although the association of hypogammaglobulinaemia with congenital lymphoedema has previously been reported and can result in recurrent respiratory infections. We report a 34 year old woman with congenital lymphoedema who was found to have symptomatic autoimmune hypothyroidism and asymptomatic selective IgA deficiency.


Adverse Drug Reactions To Poison Antidotes: Part 1, Alison Jones Sep 2012

Adverse Drug Reactions To Poison Antidotes: Part 1, Alison Jones

Alison L Jones

Summary: The probability of benefit generally outweighs the risk of adverse reactions for antidotes such as N-acetylcysteine used for treatment of paracetamol (acetaminophen) poisoning, and naloxone used in opioid poisoning. For some antidotes, such as dicobalt edetate in cyanide poisoning, administration carries high risk, and the clinical decision to use the antidote is only taken in severe poisoning. Use of an antidote rarely replaces the need for supportive measures. Except for N-acetylcysteine in paracetamol poisoning, the clinical state and not plasma concentration dictates whether an antidote is used. In pregnancy, it is usually reasoned that treatment of the mother takes …


Severity Scores For Poisoned Patients: Reasons And Rationale, A Proudfoot, Alison Jones Sep 2012

Severity Scores For Poisoned Patients: Reasons And Rationale, A Proudfoot, Alison Jones

Alison L Jones

No abstract provided.


Australian Clinical Toxicology Investigators Collaboration Randomized Trial Of Different Loading Infusion Rates Of N-Acetylcysteine [6], I Gawarammana, S Greene, Paul Dargan, Alison Jones Sep 2012

Australian Clinical Toxicology Investigators Collaboration Randomized Trial Of Different Loading Infusion Rates Of N-Acetylcysteine [6], I Gawarammana, S Greene, Paul Dargan, Alison Jones

Alison L Jones

Adverse reactions to N-acetylcysteine are reported in 6% to 23% of patients who are administered the antidote for treatment of paracetamol poisoning.1 Because paracetamol is the most common pharmaceutical product taken in overdose in many countries, it is essential that attempts be made to prevent or minimize adverse effects caused by N-acetylcysteine. We congratulate Kerr et al2 on their attempt to address this important issue.


Antidotes 5. Antidotes To Organophosphorus And Carbamate Anticholinesterases, Robert Flanagan, Alison Jones Sep 2012

Antidotes 5. Antidotes To Organophosphorus And Carbamate Anticholinesterases, Robert Flanagan, Alison Jones

Alison L Jones

No abstract provided.


Immediate Gp Strategies In Cases Of Poisoning, Alison Jones Sep 2012

Immediate Gp Strategies In Cases Of Poisoning, Alison Jones

Alison L Jones

Poisoning is a common problem for GPs. The challenge is to identify 1-2 per cent of patients who have taken enough toxin to be at serious risk and to start appropriate management as early as possible, especially if there is going to be a significant delay in getting them to hospital.


Antidotes 2. Sulphydryl Donors (N-Acetylcysteine, Methionine), Robert Flanagan, Alison Jones Sep 2012

Antidotes 2. Sulphydryl Donors (N-Acetylcysteine, Methionine), Robert Flanagan, Alison Jones

Alison L Jones

No abstract provided.


A Pandora's Box: Sustainable Pharmaceutical Supply, Alison Jones, Rosemary James, Lisa Harris, Forbes Mcgain, Simon Quilty, Robert Pearce, Jacquellne Kewley Sep 2012

A Pandora's Box: Sustainable Pharmaceutical Supply, Alison Jones, Rosemary James, Lisa Harris, Forbes Mcgain, Simon Quilty, Robert Pearce, Jacquellne Kewley

Alison L Jones

No abstract provided.


Digoxin Immune Fab, Alison Jones, Robert Flanagan Sep 2012

Digoxin Immune Fab, Alison Jones, Robert Flanagan

Alison L Jones

No abstract provided.


Paracetamol (Acetaminophen) Overdose, Alison Jones Sep 2012

Paracetamol (Acetaminophen) Overdose, Alison Jones

Alison L Jones

A 23-year-old woman. who is 34 weeks pregnant with her first child, is seen In the Emergency Department after taking 28 paratetamol (500 mg) tablets 2 h ago. She is 62 kg in weight. She did not co-ingest any other drug or alcohol. She complains of nausea and intermittent vomiting. but this has been consistent throughout her pregnancy.


Measuring Plasma Salicylate Concentrations In All Patients With Drug Overdose Or Altered Consciousness: Is It Necessary?, David Wood, Paul Dargan, Alison Jones Sep 2012

Measuring Plasma Salicylate Concentrations In All Patients With Drug Overdose Or Altered Consciousness: Is It Necessary?, David Wood, Paul Dargan, Alison Jones

Alison L Jones

Background: Salicylate self poisoning is potentially fatal. Plasma salicylate concentrations can be used to guide management when taken in the context of clinical features of toxicity and acid base status. Previous studies in the USA and Hong Kong have shown that routine measurement of plasma salicylate concentrations in all overdose patients is inappropriate, but there have been no previous studies in the UK. Methods: A retrospective case note study from 1 February 2001 to 31 January 2002 was undertaken at the emergency department of St. Thomas’ Hospital, London. Records were reviewed and information on demographic data, history, details of salicylate …


A Young Woman Who Has Taken An Overdose Of Paracetamol (Acetaminophen), Alison Jones Sep 2012

A Young Woman Who Has Taken An Overdose Of Paracetamol (Acetaminophen), Alison Jones

Alison L Jones

No abstract provided.


Adverse Drug Reactions To Poison Antidotes: Part 2, Alison Jones Sep 2012

Adverse Drug Reactions To Poison Antidotes: Part 2, Alison Jones

Alison L Jones

Administration of antidotes such as dicobalt edetate in cyanide poisoning or dimercaprol in arsenic poisoning carries a high risk of adverse reactions, and the clinical decision to use the antidote is only taken in severe poisoning. Supportive measures such as ventilation may be required in addition to the antidote. In pregnancy, it is usually reasoned that treatment of the mother takes precedence and provides the best chance for fetal survival, notwithstanding worries about teratogenicity.


Drug Interactions With Paracetamol, M Toes, Alison Jones, L Prescott Sep 2012

Drug Interactions With Paracetamol, M Toes, Alison Jones, L Prescott

Alison L Jones

Paracetamol (acetaminophen) is one of the most commonly used analgesic antipyretic drugs worldwide, and it is widely available by prescription and over the counter (OTC). Fortunately, few clinically significant drug interactions have been documented. There is probable potentiation of hepatotoxicity following an overdose from the paracetamol metabolite NAPQI by enzyme-inducing drugs. There is considerable controversy regarding the possible interaction with warfarin in its potential to increase its anticoagulant effects because of discrepancies between observational studies and those in healthy volunteers. Otherwise, no serious adverse drug interactions with therapeutic doses of paracetamol have been confirmed in humans. Because the absorption of …


Plasma Salicylate Concentrations Following Overdose; Are They Worth It ?, David Muir Wood, Alison Jones, Paul Dargan Sep 2012

Plasma Salicylate Concentrations Following Overdose; Are They Worth It ?, David Muir Wood, Alison Jones, Paul Dargan

Alison L Jones

Treatment following salicylate ingestion is determined by clinical evidence of toxicity. Previous studies have shown that routine measurement of plasma salicylate concentrations in all overdose patients is unnecessary except in those with clinical features suggestive of salicylate poisoning or in those who are unable to give an accurate history [1]. This retrospective study evaluates whether plasma salicylate concentrations are appropriately measured. A retrospective study of all plasma salicylate concentrations measured in St Thomas’ Hospital Accident and Emergency department from 1 February 2001 to 31 January 2002 was conducted. Admission record cards were surveyed for history of salicylate ingestion, clinical features …


Hepatocellular Damage Following Therapeutic Intravenous Iron Sucrose Infusion In A Child, David Wood, Alison Thomson, Matthew Lawes, Alison Jones, Paul Dargan Sep 2012

Hepatocellular Damage Following Therapeutic Intravenous Iron Sucrose Infusion In A Child, David Wood, Alison Thomson, Matthew Lawes, Alison Jones, Paul Dargan

Alison L Jones

The maximum tolerated single dose of intravenous iron infusion and iron pharmacokinetics are not known in children and not clear in adults. The case reported here is of a child given a large dose of intravenous iron sucrose (16 mg/kg) over 3 hours, who subsequently developed features of systemic iron toxicity. A TDM consultant discusses the case in the context of toxicokinetic analysis. Because the maximum tolerated dose and pharmacokinetics of intravenous iron preparations are not known, their use in both adults and children should still be undertaken with caution.