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1.
Article in English | MEDLINE | ID: mdl-38652323

ABSTRACT

PURPOSE: To prevent the incarceration and influence outcomes when criminal culpability is linked to postpartum psychosis. METHODS: Infanticide, neonaticide and filicide are most often linked with postpartum psychosis, which affects 1-2 women per 1,000 births or 4,000 women each year in the United States. Multiple genetic, hormonal and psychosocial factors surrounding childbirth result in a 1 to 4% risk of infanticide in women with postpartum psychosis. The authors seek to increase awareness of postpartum psychosis and postpartum depression in state legislatures. Others are working to have it recognized in the Diagnostic and Statistical Manual of Mental Disorders (DSM) as a specific illness. Specific postpartum legislation for those charged with crimes related to maternal mental illness is necessary. RESULTS: In Illinois, the very first criminal law in the nation recognizing the pernicious effects of this illness went into effect in 2018. The authors and others are attempting to cause similar or broader legislation to be brought in other states. Several women have been released from extended incarceration utilizing this law. CONCLUSIONS: This temporary mental illness can lead to tragic outcomes when hospitalization and crisis intervention is delayed or the illness is misdiagnosed. The legal/judicial system has not utilized the growing body of scientific developments that medical researchers have discovered in recent decades. The lack of a unique diagnostic classification in the DSM and the lack of postpartum criminal laws, lead to mentally ill mothers in the U.S. receiving excessively harsh sentences when prosecuted, evidenced both in trial and sentencing.

2.
JAMA Netw Open ; 5(4): e226257, 2022 04 01.
Article in English | MEDLINE | ID: mdl-35394514

ABSTRACT

Importance: Elevated levels of blood perfluoroalkyl and polyfluoroalkyl substances (PFASs) have been associated with a range of adverse health outcomes. Firefighters have been exposed to PFASs in firefighting foams and have previously been shown to have higher PFAS levels in blood samples than the general population. No interventions have been shown to reduce PFAS levels. Objective: To examine the effect of blood or plasma donations on PFAS levels in firefighters in Australia. Design, Setting, and Participants: This 52-week, open-label, randomized clinical trial enrolled participants from May 23 to August 23, 2019. Participants were 285 Fire Rescue Victoria staff or contractors with serum levels of perfluorooctane sulfonate (PFOS) of 5 ng/mL or more who were eligible to donate blood, had not donated blood in the 3 months prior to randomization, and were able to provide written informed consent. Analysis was performed on an intention-to-treat basis from May to July 2021. Interventions: Firefighters with baseline PFOS levels of 5 ng/mL or more were randomly assigned to donate plasma every 6 weeks for 12 months, donate blood every 12 weeks for 12 months, or be observed only. Main Outcomes and Measures: The primary end points were changes in the serum PFOS and perfluorohexane sulfonic acid (PFHxS) levels after 12 months of plasma or blood donations or after observation only. Secondary end points included changes in serum PFAS levels from week 52 to week 64, changes in other PFASs, and changes in complete blood count, biochemistry, thyroid function, and lipid profile from screening to week 52. Results: A total of 285 firefighters (279 men [97.9%]; mean [SD] age, 53.0 [8.4] years) were enrolled; 95 were randomly assigned to donate plasma, 95 were randomly assigned to donate blood, and 95 were randomly assigned to be observed. The mean level of PFOS at 12 months was significantly reduced by plasma donation (-2.9 ng/mL; 95% CI, -3.6 to -2.3 ng/mL; P < .001) and blood donation (-1.1 ng/mL; 95% CI, -1.5 to -0.7 ng/mL; P < .001) but was unchanged in the observation group. The mean level of PFHxS was significantly reduced by plasma donation (-1.1 ng/mL; 95% CI, -1.6 to -0.7 ng/mL; P < .001), but no significant change was observed in the blood donation or observation groups. Analysis between groups indicated that plasma donation had a larger treatment effect than blood donation, but both were significantly more efficacious than observation in reducing PFAS levels. Conclusions and Relevance: Plasma and blood donations caused greater reductions in serum PFAS levels than observation alone over a 12-month period. Further research is needed to evaluate the clinical implications of these findings. Trial Registration: anzctr.org.au Identifier: ACTRN12619000204145.


Subject(s)
Firefighters , Fluorocarbons , Blood Donors , Humans , Male , Middle Aged , Victoria
3.
BMJ Open ; 11(5): e044833, 2021 05 07.
Article in English | MEDLINE | ID: mdl-33963058

ABSTRACT

INTRODUCTION: Perfluoroalkyl and polyfluoroalkyl substances (PFAS) are a diverse group of compounds that have been used in hundreds of industrial applications and consumer products including aqueous film-forming foam (AFFF) for many years. Multiple national and international health and environmental agencies have accepted that PFAS exposures are associated with numerous adverse health effects. Australian firefighters have been shown to have elevated levels of PFAS in their blood, specifically perfluorooctane sulfonic acid (PFOS) and perfluorohexane sulfonic acid (PFHxS), due to the historical use of AFFF. While PFAS concentrations decline over time once the source of exposure has been removed, their potential adverse health effects are such that it would be prudent to develop an intervention to lower levels at a faster rate than occurs via natural elimination rates. METHODS AND ANALYSIS: This is a randomised controlled trial of current and former Australian firefighters in the Metropolitan Fire Brigade/Fire Rescue Victoria, and contractors, with previous occupational exposure to PFAS and baseline elevated PFOS levels. The study is investigating whether whole blood donation every 12 weeks or plasma donation every 6 weeks will significantly reduce PFAS levels, compared with a control group. We have used covariate-adaptive randomisation to balance participants' sex and blood PFAS levels between the three groups and would consider a 25% reduction in serum PFOS and PFHxS levels to be potentially clinically significant after 12 months of whole blood or plasma donation. A secondary analysis of health biomarkers is being made of changes between screening and week 52 in all three groups. ETHICS AND DISSEMINATION: This trial has been approved by Macquarie University Human Research Ethics Committee (reference number: 3855), final protocol V.2 dated 12 June 2019. Study results will be disseminated via peer-reviewed publications and presentations at conferences. TRIAL REGISTRATION NUMBER: Australian New Zealand Clinical Trials Registry (ACTRN12619000204145).


Subject(s)
Environmental Pollutants , Firefighters , Fluorocarbons , Water Pollutants, Chemical , Australia , Humans , Randomized Controlled Trials as Topic , Sulfonic Acids , Water Pollutants, Chemical/analysis
4.
Med ; 2(1): 49-73, 2021 01 15.
Article in English | MEDLINE | ID: mdl-33575671

ABSTRACT

BACKGROUND: In about half of all patients with a suspected monogenic disease, genomic investigations fail to identify the diagnosis. A contributing factor is the difficulty with repetitive regions of the genome, such as those generated by segmental duplications. The ATAD3 locus is one such region, in which recessive deletions and dominant duplications have recently been reported to cause lethal perinatal mitochondrial diseases characterized by pontocerebellar hypoplasia or cardiomyopathy, respectively. METHODS: Whole exome, whole genome and long-read DNA sequencing techniques combined with studies of RNA and quantitative proteomics were used to investigate 17 subjects from 16 unrelated families with suspected mitochondrial disease. FINDINGS: We report six different de novo duplications in the ATAD3 gene locus causing a distinctive presentation including lethal perinatal cardiomyopathy, persistent hyperlactacidemia, and frequently corneal clouding or cataracts and encephalopathy. The recurrent 68 Kb ATAD3 duplications are identifiable from genome and exome sequencing but usually missed by microarrays. The ATAD3 duplications result in the formation of identical chimeric ATAD3A/ATAD3C proteins, altered ATAD3 complexes and a striking reduction in mitochondrial oxidative phosphorylation complex I and its activity in heart tissue. CONCLUSIONS: ATAD3 duplications appear to act in a dominant-negative manner and the de novo inheritance infers a low recurrence risk for families, unlike most pediatric mitochondrial diseases. More than 350 genes underlie mitochondrial diseases. In our experience the ATAD3 locus is now one of the five most common causes of nuclear-encoded pediatric mitochondrial disease but the repetitive nature of the locus means ATAD3 diagnoses may be frequently missed by current genomic strategies. FUNDING: Australian NHMRC, US Department of Defense, Japanese AMED and JSPS agencies, Australian Genomics Health Alliance and Australian Mito Foundation.


Subject(s)
Cardiomyopathies , Heart Failure , Mitochondrial Diseases , ATPases Associated with Diverse Cellular Activities/genetics , Australia , Child , Humans , Membrane Proteins/genetics , Mitochondrial Diseases/genetics , Mitochondrial Proteins/genetics , United States
5.
Mayo Clin Proc ; 96(1): 32-39, 2021 01.
Article in English | MEDLINE | ID: mdl-33413833

ABSTRACT

OBJECTIVE: To investigate the relationship between maximal exercise capacity measured before severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection and hospitalization due to coronavirus disease 2019 (COVID-19). METHODS: We identified patients (≥18 years) who completed a clinically indicated exercise stress test between January 1, 2016, and February 29, 2020, and had a test for SARS-CoV-2 (ie, real-time reverse transcriptase polymerase chain reaction test) between February 29, 2020, and May 30, 2020. Maximal exercise capacity was quantified in metabolic equivalents of task (METs). Logistic regression was used to evaluate the likelihood that hospitalization secondary to COVID-19 is related to peak METs, with adjustment for 13 covariates previously identified as associated with higher risk for severe illness from COVID-19. RESULTS: We identified 246 patients (age, 59±12 years; 42% male; 75% black race) who had an exercise test and tested positive for SARS-CoV-2. Among these, 89 (36%) were hospitalized. Peak METs were significantly lower (P<.001) among patients who were hospitalized (6.7±2.8) compared with those not hospitalized (8.0±2.4). Peak METs were inversely associated with the likelihood of hospitalization in unadjusted (odds ratio, 0.83; 95% CI, 0.74-0.92) and adjusted models (odds ratio, 0.87; 95% CI, 0.76-0.99). CONCLUSION: Maximal exercise capacity is independently and inversely associated with the likelihood of hospitalization due to COVID-19. These data further support the important relationship between cardiorespiratory fitness and health outcomes. Future studies are needed to determine whether improving maximal exercise capacity is associated with lower risk of complications due to viral infections, such as COVID-19.


Subject(s)
COVID-19/physiopathology , Exercise Tolerance , Hospitalization/statistics & numerical data , Pneumonia, Viral/physiopathology , COVID-19 Testing , Exercise Test , Female , Humans , Male , Middle Aged , Pneumonia, Viral/epidemiology , Pneumonia, Viral/virology , Retrospective Studies , SARS-CoV-2
6.
Brain Dev ; 42(10): 762-766, 2020 Nov.
Article in English | MEDLINE | ID: mdl-32741581

ABSTRACT

Biotinidase deficiency disorder is a rare inherited metabolic disorder with typical neurological manifestations of hypotonia, developmental delay, rashes, seizures, hearing and vision impairment. We present two cases with different and unusual clinical profiles, whose neuroimaging resembled Neuromyelitis Optica Spectrum Disorder. Case 1 was initially treated with immunomodulation with steroids and intravenous immunoglobulins, with partial improvement. However reinvestigation for worsening of symptoms showed more extensive changes on spine magnetic resonance imaging. Raised lactate and alanine levels on repeat cerebrospinal fluid testing resulted in further investigations that revealed a biotinidase deficiency. Case 2 presented mainly with respiratory symptoms: a barium swallow suggested bulbar dysfunction. Neuroimaging of brain and spine was similar to that in case 1 and the child was promptly investigated for and confirmed to have biotinidase deficiency. Both cases responded to biotin supplementation. It is important to be cognisant of atypical neurological presentations of biotinidase deficiency including those that mimic immune mediated neurodemyelination disorders, as biotinidase deficiency is potentially treatable.


Subject(s)
Biotinidase Deficiency/diagnosis , Biotinidase/metabolism , Biotinidase Deficiency/metabolism , Brain/diagnostic imaging , Child, Preschool , Diagnosis, Differential , Diagnostic Errors , Female , Humans , Infant , Magnetic Resonance Imaging/methods , Neuromyelitis Optica/diagnosis , Spine/diagnostic imaging
7.
JIMD Rep ; 54(1): 9-15, 2020 Jul.
Article in English | MEDLINE | ID: mdl-32685344

ABSTRACT

Pyridoxine-dependent epilepsy (PDE) is a potentially treatable vitamin-responsive epileptic encephalopathy. The most prevalent form of PDE is due to an underlying genetic defect in ALDH7A1 encoding Antiquitin (ATQ), an enzyme with α-aminoadipic semialdehyde dehydrogenase (AASADH) activity which facilitates cerebral lysine degradation. Devastating outcomes including intellectual disability and significant developmental delays are still observed in 75% to 80% of pyridoxine responsive individuals with good seizure control, potentially attributable to the accumulation of toxic intermediates α-aminoadipic semialdehyde (AASA) and its cyclic form Δ1-piperideine-6-carboxylate (P6C) in plasma, urine and CSF. Thus, adjunct treatment strategies incorporating lysine restriction and arginine supplementation, separately or in combination with pyridoxine have been attempted to enhance seizure control and improve cognitive function. We describe a 4 year old girl with classical PDE who demonstrated significant improvements in clinical, neurological and developmental outcomes including absence of clinical seizures and cessation of antiepileptic medications since age 3 months, normalisation of EEG, significant improvement in the white matter signal throughout the cerebrum on neuroimaging and significant reduction in urine P6C and pipecolic acid levels post- combined therapy with lysine restricted diet in conjunction with pyridoxine and folinic acid. Lysine restriction was well tolerated with impressive compliance and plasma lysine levels remained within the lower reference ranges; mean level 70 µmol/L (ref range 52-196 µmol/L). This case further emphasizes the benefit of early dietary intervention as an effective adjunct in the management of PDE.

8.
Am J Med Genet A ; 176(12): 2561-2563, 2018 12.
Article in English | MEDLINE | ID: mdl-30152198

ABSTRACT

Silver-Russell syndrome (SRS OMIM 180860) is a rare, albeit well-recognized disorder characterized by severe intrauterine and postnatal growth retardation. It remains a clinical diagnosis with a molecular cause identifiable in approximately 60%-70% of patients. We report a 4-year-old Australian Aboriginal girl who was born at 32 weeks gestation with features strongly suggestive of SRS, after extensive investigation she was referred to our undiagnosed disease program (UDP). Genomic sequencing was performed which identified a heterozygous splice site variant in IGF2 which is predicted to be pathogenic by in-silico studies, paternal allelic origin, de novo status, and RNA studies on fibroblasts. We compare clinical findings with reported patients to add to the knowledge base on IGF2 variants and to promote the engagement of other Australian Aboriginal families in genomic medicine.


Subject(s)
Silver-Russell Syndrome/diagnosis , Silver-Russell Syndrome/genetics , Alleles , Alternative Splicing , Australia , Child, Preschool , Electroencephalography , Female , Genetic Association Studies , Genetic Predisposition to Disease , Humans , Insulin-Like Growth Factor II/genetics , Mutation , RNA Splice Sites
9.
Am Heart J ; 204: 76-82, 2018 10.
Article in English | MEDLINE | ID: mdl-30081276

ABSTRACT

BACKGROUND: In patients with coronary heart disease, the exercise workload (i.e., metabolic equivalents of task, METs) at which patients exercise train upon entry and completion of cardiac rehabilitation (CR) are independently related to prognosis. Unknown is the association between exercise training workloads in CR and clinical outcomes in patients with heart failure (HF). METHODS: Patients with HF who participated in an early outpatient CR program were used in this retrospective analysis. Exercise workloads upon entry and completion of CR were converted to METs. The primary outcome was all-cause mortality and the secondary outcome was HF hospitalization. Cox regression analysis was used to assess the adjusted risk between MET levels in CR and clinical outcomes. RESULTS: Among 707 patients, the median exercise training workload at the start and end of CR was 2.5 METs (IQR 2.1 to 3.1 METs) and 3.2 METS (IQR 2.7 to 4.1 METs), respectively, for men and 2.2 METs (IQR 1.9 to 2.6 METs) and 2.9 METS (IQR 2.3 to 3.4 METs), respectively, for women. There were 242 deaths and 266 HF hospitalizations. METs achieved at the end of CR had the strongest independent association with all-cause mortality (adjusted HR, 95% CI: 0.58, 0.48-0.70) and HF hospitalization (adjusted HR, 95% CI: 0.62, 0.52-0.74). Each 1 MET higher work load at the end of CR was associated with a 42% and 38% lower adjusted risk for all-cause mortality and HF hospitalization, respectively. CONCLUSIONS: In a diverse cohort of patients with chronic HF our data suggests that an easily accessible measure of exercise capacity (i.e., METs) that is collected during CR is independently associated with the adjusted risk for both all-cause mortality and HF-specific hospitalization. Training at MET levels <3.5 METs identifies patients that might benefit from closer clinical surveillance and reinforced adherence to medical and lifestyle preventive strategies.


Subject(s)
Cardiac Rehabilitation/methods , Exercise Therapy/methods , Heart Failure/rehabilitation , Aged , Cause of Death , Female , Heart Failure/metabolism , Heart Failure/mortality , Hospitalization , Humans , Kaplan-Meier Estimate , Male , Metabolic Equivalent , Middle Aged , Retrospective Studies , Treatment Outcome
10.
Orphanet J Rare Dis ; 12(1): 83, 2017 05 03.
Article in English | MEDLINE | ID: mdl-28468665

ABSTRACT

BACKGROUND: New approaches are required to address the needs of complex undiagnosed diseases patients. These approaches include clinical genomic diagnostic pipelines, utilizing intra- and multi-disciplinary platforms, as well as specialty-specific genomic clinics. Both are advancing diagnostic rates. However, complementary cross-disciplinary approaches are also critical to address those patients with multisystem disorders who traverse the bounds of multiple specialties and remain undiagnosed despite existing intra-specialty and genomic-focused approaches. The diagnostic possibilities of undiagnosed diseases include genetic and non-genetic conditions. The focus on genetic diseases addresses some of these disorders, however a cross-disciplinary approach is needed that also simultaneously addresses other disorder types. Herein, we describe the initiation and summary outcomes of a public health system approach for complex undiagnosed patients - the Undiagnosed Diseases Program-Western Australia (UDP-WA). RESULTS: Briefly the UDP-WA is: i) one of a complementary suite of approaches that is being delivered within health service, and with community engagement, to address the needs of those with severe undiagnosed diseases; ii) delivered within a public health system to support equitable access to health care, including for those from remote and regional areas; iii) providing diagnoses and improved patient care; iv) delivering a platform for in-service and real time genomic and phenomic education for clinicians that traverses a diverse range of specialties; v) retaining and recapturing clinical expertise; vi) supporting the education of junior and more senior medical staff; vii) designed to integrate with clinical translational research; and viii) is supporting greater connectedness for patients, families and medical staff. CONCLUSION: The UDP-WA has been initiated in the public health system to complement existing clinical genomic approaches; it has been targeted to those with a specific diagnostic need, and initiated by redirecting existing clinical and financial resources. The UDP-WA supports the provision of equitable and sustainable diagnostics and simultaneously supports capacity building in clinical care and translational research, for those with undiagnosed, typically rare, conditions.


Subject(s)
Health Planning/organization & administration , Public Health/methods , Genomics , Humans , Proteomics , Western Australia
11.
J Paediatr Child Health ; 53(5): 470-473, 2017 May.
Article in English | MEDLINE | ID: mdl-28045210

ABSTRACT

AIM: To determine whether information about a family history of hypercholesterolaemia or early cardiovascular disease was documented by paediatricians in children and adolescents with elevated low-density lipoprotein (LDL)-cholesterol levels. METHODS: Retrospective chart review of all children with a LDL-cholesterol level ≥95th percentile (3.4 mmol/L) and ≥99th percentile (3.8 mmol/L) at a tertiary paediatric hospital in 2014. RESULTS: Of 86 children with a LDL-cholesterol level ≥3.4 mmol/L, only 18 (20.9%) had documentation of a family history of hypercholesterolaemia or early cardiovascular disease. In those 18, 13 (72.2%) had a family history of hypercholesterolaemia and 11 (61.1%) a family history of early cardiovascular disease. Increasing the LDL-cholesterol cut-off level to ≥3.8 mmol/L (n = 46) did not improve documentation of a family history (9/46, 19.6%). CONCLUSIONS: In patients with elevated LDL-cholesterol levels, paediatricians rarely document a positive or negative family history of hypercholesterolaemia or early cardiovascular disease. This represents a lost opportunity to diagnose children and adolescents with familial hypercholesterolaemia.


Subject(s)
Cardiovascular Diseases/diagnosis , Documentation/statistics & numerical data , Hyperlipoproteinemia Type II/diagnosis , Medical History Taking/statistics & numerical data , Practice Patterns, Physicians'/statistics & numerical data , Adolescent , Biomarkers/blood , Cardiovascular Diseases/blood , Child , Child, Preschool , Cholesterol, LDL/blood , Female , Follow-Up Studies , Humans , Hyperlipoproteinemia Type II/blood , Infant , Infant, Newborn , Male , Pediatrics , Retrospective Studies , Western Australia
12.
Atherosclerosis ; 252: 82-87, 2016 09.
Article in English | MEDLINE | ID: mdl-27508319

ABSTRACT

BACKGROUND AND AIMS: Familial hypercholesterolaemia (FH) profoundly increases the risk of coronary artery disease (CAD). We investigated whether diet and a bile-acid sequestrant decrease coronary atherosclerosis in patients with FH. METHODS: We identified 26 men with FH and CAD, participating in the St Thomas' Atherosclerosis Regression Study, who had been randomized to receive a fat-modified diet plus cholestyramine (8 g twice daily) (DC, n = 12) or usual care (UC, n = 14), and investigated the relative effects of these treatments on the angiographic progression of coronary atherosclerosis over 39 months. FH was defined as probable/definite according to Dutch Lipid Clinic Network criteria; mean FH score was 8.7 (range 6-15) and mean baseline low-density lipoprotein cholesterol (LDL-Ch) concentration was 5.4 (SD 1.4) mmol/L. Coronary atherosclerosis was assessed by serial quantitative angiography as the global changes in mean and minimum absolute width of segments (MAWS and MinAWS, respectively). RESULTS: Mean plasma LDL-Ch concentration fell by 35% with DC and remained significantly (p < 0.001) lower during the trial at 3.78 (SD 0.98) mmol/L compared with UC at 4.89 (1.04). MAWS decreased by 0.252 (SEM 0.072) mm in the UC group and by 0.001 (0.065) mm in the DC group (p = 0.007), with corresponding reductions in MinAWS of 0.290 (0.087) mm and 0.013 (0.058) mm (p = 0.009); these changes were significant after adjusting for baseline variables, including coronary luminal dimensions and lipoprotein(a). Progression was observed in 7 patients (50%) on UC and 3 (25%) on DC (p = 0.19), with regression in no patients (0%) and 3 patients (25%) (p < 0.05), respectively. CONCLUSIONS: This investigation, carried out in the pre-statin era, demonstrates that a prudent diet and cholestyramine could improve the course of coronary atherosclerosis in men with phenotypic FH through sustained reductions in LDL-Ch.


Subject(s)
Cholestyramine Resin/therapeutic use , Coronary Artery Disease/diagnostic imaging , Coronary Artery Disease/physiopathology , Diet , Hyperlipoproteinemia Type II/diagnostic imaging , Hyperlipoproteinemia Type II/physiopathology , Adult , Aged , Angiography , Anticholesteremic Agents/therapeutic use , Cholesterol, LDL/blood , Data Interpretation, Statistical , Disease Progression , Humans , Hyperlipoproteinemia Type II/drug therapy , Incidence , Male , Middle Aged , Phenotype , Severity of Illness Index , Treatment Outcome
13.
Am Heart J ; 174: 167-72, 2016 Apr.
Article in English | MEDLINE | ID: mdl-26995385

ABSTRACT

BACKGROUND: Although cardiopulmonary exercise (CPX) testing in patients with heart failure and reduced ejection fraction is well established, there are limited data on the value of CPX variables in patients with HF and preserved ejection fraction (HFpEF). We sought to determine the prognostic value of select CPX measures in patients with HFpEF. METHODS: This was a retrospective analysis of patients with HFpEF (ejection fraction ≥ 50%) who performed a CPX test between 1997 and 2010. Selected CPX variables included peak oxygen uptake (VO2), percent predicted maximum oxygen uptake (ppMVO2), minute ventilation to carbon dioxide production slope (VE/VCO2 slope) and exercise oscillatory ventilation (EOV). Separate Cox regression analyses were performed to assess the relationship between each CPX variable and a composite outcome of all-cause mortality or cardiac transplant. RESULTS: We identified 173 HFpEF patients (45% women, 58% non-white, age 54 ± 14 years) with complete CPX data. During a median follow-up of 5.2 years, there were 42 deaths and 5 cardiac transplants. The 1-, 3-, and 5-year cumulative event-free survival was 96%, 90%, and 82%, respectively. Based on the Wald statistic from the Cox regression analyses adjusted for age, sex, and ß-blockade therapy, ppMVO2 was the strongest predictor of the end point (Wald χ(2) = 15.0, hazard ratio per 10%, P < .001), followed by peak VO2 (Wald χ(2) = 11.8, P = .001). VE/VCO2 slope (Wald χ(2)= 0.4, P = .54) and EOV (Wald χ(2) = 0.15, P = .70) had no significant association to the composite outcome. CONCLUSION: These data support the prognostic utility of peak VO2 and ppMVO2 in patients with HFpEF. Additional studies are needed to define optimal cut points to identify low- and high-risk patients.


Subject(s)
Exercise Test/trends , Heart Failure/diagnosis , Stroke Volume/physiology , Cardiac Catheterization , Disease Progression , Disease-Free Survival , Echocardiography , Female , Follow-Up Studies , Heart Failure/mortality , Heart Failure/physiopathology , Humans , Male , Middle Aged , Myocardial Perfusion Imaging , Prognosis , Reproducibility of Results , Retrospective Studies , Severity of Illness Index , Survival Rate/trends , Time Factors , United States/epidemiology
14.
Am J Cardiol ; 117(8): 1236-41, 2016 Apr 15.
Article in English | MEDLINE | ID: mdl-26897640

ABSTRACT

The purpose of this retrospective, observational study was to describe the relation between exercise workload during cardiac rehabilitation (CR), expressed as metabolic equivalents of task (METs), and prognosis among patients with coronary heart disease. We included patients with coronary heart disease who participated in CR between January 1998 and June 2007. METs were calculated from treadmill workload. Cox regression analysis was used to describe the relationship between METs and time to a composite outcome of all-cause mortality, nonfatal myocardial infarction, or heart failure hospitalization. Among 1,726 patients (36% women; median age 59 years [interquartile range, 52 to 66]), there were 467 events (27%) during a median follow-up of 5.8 years (interquartile range, 2.6 to 8.7). In analyses adjusted for age, sex, Charlson co-morbidity index, hypertension, diabetes, and CR referral diagnosis, METs were independently related to the composite outcome at CR start (Wald chi-square 43, hazard ratio 0.59 [95% confidence interval 0.51 to 0.70]) and CR end (Wald chi-square 47, hazard ratio 0.68 [95% confidence interval 0.61 to 0.76]). Patients exercising below 3.5 METs on exit from CR represent a high-risk group with 1- and 3-year event rates ≥7% and ≥18%, respectively. In conclusion, METs during CR is available at no additional cost and can be used to identify patients at increased risk for an event who may benefit from closer follow-up, extended length of stay in CR, and/or participation in other strategies aimed at maximizing adherence to secondary preventive behaviors and improving exercise capacity.


Subject(s)
Coronary Artery Disease/rehabilitation , Exercise Therapy/methods , Exercise Tolerance/physiology , Aged , Exercise Test , Female , Follow-Up Studies , Humans , Male , Middle Aged , Retrospective Studies , Treatment Outcome
15.
JIMD Rep ; 29: 33-38, 2016.
Article in English | MEDLINE | ID: mdl-26608392

ABSTRACT

We describe two half-siblings with monocarboxylate transporter 1 (MCT1, SLC16A1) deficiency, a defect on ketone body utilization, that has only recently been identified (van Hasselt et al., N Engl J Med, 371:1900-1907, 2014) as a cause for recurrent ketoacidoses. Our index patient is a boy with non-consanguineous parents who had presented acutely with impaired consciousness and severe metabolic ketoacidosis following a 3-day history of gastroenteritis at age 5 years. A 12.5-year-old half-brother who shared the proband's mother also had a previous history of recurrent ketoacidoses. Results of mutation and enzyme activity analyses in proband samples advocated against methylacetoacetyl-coenzyme A thiolase ("beta-ketothiolase") and succinyl-coenzyme A: 3-oxoacyl coenzyme A transferase (SCOT) deficiencies. A single heterozygous c.982C>T transition in the SLC16A1 gene resulting in a stop mutation (p.Arg328Ter) was detected in both boys. It was shared by their healthy mother and by the proband's half-sister, but was absent in the proband's father. MCT1 deficiency may be more prevalent than is apparent, as clinical manifestations can occur both in individuals with bi- and monoallelic mutations. It may be an important differential diagnosis in recurrent ketoacidosis with or without hypoglycemia, particularly in the absence of any specific metabolic profiles in blood and urine. Early diagnosis may enable improved disease management. Careful identification of potential triggers of metabolic decompensations in individuals even with single heterozygous mutations in the SLC16A1 gene is indicated.

16.
Article in English | MEDLINE | ID: mdl-26084681

ABSTRACT

PURPOSE: The rationale for 'professional education and development' (PED) courses is to support general practitioners, enabling them to access a range of theoretical and practical skills within a supportive schema. It aims to identify whether and how a regional PED course has had a beneficial impact upon participants. METHODS: The study comprised a qualitative investigation of participants' assessed coursework portfolios. The content of each portfolio gives individual accounts of the impact of the course on personal and practice development. Permission to access extant portfolios was obtained from 16 recent alumni of the course. The anonymous written material was analysed by the research team for recurring discourses and themes using a thematic framework analysis. RESULTS: Seven major thematic categories were extrapolated from the data: leadership, resilience, quality improvement, change management, development of new services, educational expertise, and patient safety. In each category, we found evidence that the course enabled development of practitioners by enhancing knowledge and skills which had a positive impact upon their self-perceived effectiveness and motivation. CONCLUSION: Extended specialty training is on the horizon but such courses may still serve a valuable purpose for current trainees and the existing general practitioners workforce which will be responsible for leading the shift towards community-based service delivery.

18.
Educ Prim Care ; 25(1): 26-35, 2014 Jan.
Article in English | MEDLINE | ID: mdl-24423798

ABSTRACT

Evidence suggests that, in the UK, the current three-year specialty training period in general practice is inadequate for equipping newly qualified GPs with mastery in all the necessary clinical and generic skills that would allow them to respond with optimum effect to the complexities and uncertainties of the generalist workplace. The North Western Deanery initiated an innovative pilot programme of extended (by 24 months) specialty training in general practice (GPST4-5). Nine ST3 trainees who had just 'graduated' from GPST, holding nMRCGP, were recruited, thereby formally deferring their application for a Certificate of Completion of Training (CCT). The programme was evaluated using established qualitative research techniques. Semi-structured interviews were conducted at fixed points and data were analysed for recurring discourses and themes using a framework thematic analysis. We obtained evidence of the benefits of extended specialty training in encouraging the development of clinical mastery alongside additional specialist skills, generalist and leadership competencies. We also identified the enabling factors for beneficial extended training, including workplace-based training under educational mentorship, combined with a blended learning programme and sustained expert- and peer-support.


Subject(s)
Clinical Competence/standards , Education, Medical, Graduate/standards , General Practice/education , Mentors , Education, Medical, Graduate/organization & administration , Education, Medical, Graduate/trends , General Practice/standards , General Practice/trends , Humans , Inservice Training/methods , Inservice Training/organization & administration , Inservice Training/standards , Interviews as Topic , Pilot Projects , Program Evaluation , Qualitative Research , Time Factors , United Kingdom
19.
Arch Dis Child ; 99(3): 221-4, 2014 Mar.
Article in English | MEDLINE | ID: mdl-24288135

ABSTRACT

OBJECTIVE: To determine the relationship between serum ferritin and malnutrition in newly assessed patients at a paediatric eating disorders clinic. DESIGN: This was a prospectively assessed clinical cohort study. SETTING: Intake assessment clinic of a tertiary eating disorders service for children and adolescents. METHODS: Clinical, anthropometric and laboratory features of children and adolescents were systematically measured. The relationship of serum ferritin to other clinical, anthropometric and laboratory measures was determined using linear regression. RESULTS: A total of 121 female patients aged 9.5-17.6 years were included, with body mass index (BMI) z score -5.7 to 1.9 (median -1.3). Using multiple regression, serum ferritin was inversely associated with BMI z score (regression coefficient (ß)=-0.234, 95% CI -0.413 to -0.055) and serum insulin-like growth factor 1 (IGF-1) (ß=-0.476, 95% CI -0.884 to -0.068) and positively associated with alanine aminotransferase (ß=0.357, 95% CI 0.055 to 0.659, controlling for age, pubertal stage and serum iron). CONCLUSIONS: In malnourished adolescents with eating disorders increased serum ferritin is associated with lower BMI z score and serum IGF-1.


Subject(s)
Feeding and Eating Disorders/blood , Ferritins/blood , Malnutrition/blood , Nutritional Status , Adolescent , Anthropometry , Australia , Body Mass Index , Child , Cohort Studies , Female , Humans , Linear Models , Male , Prospective Studies
20.
J Pediatr Endocrinol Metab ; 27(1-2): 101-6, 2014 Jan.
Article in English | MEDLINE | ID: mdl-24057593

ABSTRACT

BACKGROUND: The World Health Organization (WHO) has recommended measurement of neonatal thyroid-stimulating hormone (TSH) as a marker of population iodine status. A population is considered iodine sufficient when <3% of neonatal blood samples collected 3-4 days after birth have TSH concentrations >5 mIU/L. However, changes in technology and clinical practices have opened the WHO criteria to various interpretations. AIM: This study aimed to investigate the effects of time of sampling, weight, and sex on neonatal TSH concentrations by analyzing neonatal TSH data, based on the WHO criteria for population iodine sufficiency. METHODS: We analyzed the Western Australian (WA) Newborn Screening Program records for 198,826 babies born in WA between 2005 and 2011, to determine the relationship between neonatal TSH concentrations and time of sampling, weight, and sex. RESULTS: The proportion of TSH results above the WHO cut-off was higher for samples collected 48-72 h after birth rather than later, for males, for birth weights below 2500 g, and when a cut-off of 5.0 mIU/L was used. CONCLUSION: Following changes in newborn screening protocols and earlier collection of blood samples, the WHO criteria appear inappropriate. We recommend that WHO revise current guidelines regarding use of neonatal TSH for monitoring population iodine status.


Subject(s)
Iodine/blood , Population Surveillance , Thyrotropin/blood , Female , Humans , Infant, Newborn , Male , Neonatal Screening , Western Australia
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