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1.
Psychol Med ; 52(3): 538-547, 2022 02.
Artículo en Inglés | MEDLINE | ID: mdl-32646525

RESUMEN

BACKGROUND: Cognitive models propose that behavioural responses to voices maintain distress by preventing disconfirmation of negative beliefs about voices. We used Experience Sampling Methodology (ESM) to examine the hypothesized maintenance role of behavioural responses during daily life. METHOD: Thirty-one outpatients with frequent voices completed a smartphone-based ESM questionnaire 10 times a day over 9 days, assessing voice-related distress; resistance and compliance responses to voices; voice characteristics (intensity and negative content); appraisals of voice dominance, uncontrollability and intrusiveness. RESULTS: In line with predictions, behavioural responses were associated with voice appraisals (dominance and uncontrollability), but not voice characteristics. Greater resistance and compliance were reported in moments of increased voice distress, but these associations did not persist after controlling for concurrent voice appraisals and characteristics. Voice distress was predicted by appraisals, and, unexpectedly, also by voice characteristics. As predicted, compliance and resistance were related to increases in distress at subsequent timepoints, whilst antecedent voice appraisals and characteristics had no such effect. Compliance, but not resistance, additionally predicted subsequent increases in voice uncontrollability. In both cases, the reverse models showed no association, indicating directional effects of responses on subsequent distress, and of compliance on uncontrollability appraisals. CONCLUSIONS: These results provide support for the cognitive model by suggesting that momentary behavioural and emotional responses to voices are associated with concurrent negative voice appraisals. Findings suggest that behavioural responses may be driven by voice appraisals, rather than directly by distress, and may in turn maintain voice appraisals and associated distress during the course of daily life.


Asunto(s)
Alucinaciones , Voz , Cognición , Evaluación Ecológica Momentánea , Emociones , Alucinaciones/psicología , Humanos
2.
Pancreatology ; 16(2): 164-80, 2016.
Artículo en Inglés | MEDLINE | ID: mdl-26775768

RESUMEN

AIM: Because of increasing awareness of variations in the use of pancreatic exocrine replacement therapy, the Australasian Pancreatic Club decided it was timely to re-review the literature and create new Australasian guidelines for the management of pancreatic exocrine insufficiency (PEI). METHODS: A working party of expert clinicians was convened and initially determined that by dividing the types of presentation into three categories for the likelihood of PEI (definite, possible and unlikely) they were able to consider the difficulties of diagnosing PEI and relate these to the value of treatment for each diagnostic category. RESULTS AND CONCLUSIONS: Recent studies confirm that patients with chronic pancreatitis receive similar benefit from pancreatic exocrine replacement therapy (PERT) to that established in children with cystic fibrosis. Severe acute pancreatitis is frequently followed by PEI and PERT should be considered for these patients because of their nutritional requirements. Evidence is also becoming stronger for the benefits of PERT in patients with unresectable pancreatic cancer. However there is as yet no clear guide to help identify those patients in the 'unlikely' PEI group who would benefit from PERT. For example, patients with coeliac disease, diabetes mellitus, irritable bowel syndrome and weight loss in the elderly may occasionally be given a trial of PERT, but determining its effectiveness will be difficult. The starting dose of PERT should be from 25,000-40,000 IU lipase taken with food. This may need to be titrated up and there may be a need for proton pump inhibitors in some patients to improve efficacy.


Asunto(s)
Enfermedades Pancreáticas/terapia , Guías de Práctica Clínica como Asunto , Australasia , Humanos , Pancrelipasa/uso terapéutico
3.
Dev Biol ; 365(1): 310-8, 2012 May 01.
Artículo en Inglés | MEDLINE | ID: mdl-22387845

RESUMEN

Highly conserved non-coding elements (CNEs) linked to genes involved in embryonic development have been hypothesised to correspond to cis-regulatory modules due to their ability to induce tissue-specific expression patterns. However, attempts to prove their requirement for normal development or for the correct expression of the genes they are associated with have yielded conflicting results. Here, we show that CNEs at the vertebrate Sox21 locus are crucial for Sox21 expression in the embryonic lens and that loss of Sox21 function interferes with normal lens development. Using different expression assays in zebrafish we find that two CNEs linked to Sox21 in all vertebrates contain lens enhancers and that their removal from a reporter BAC abolishes lens expression. Furthermore inhibition of Sox21 function after the injection of a sox21b morpholino into zebrafish leads to defects in lens development. These findings identify a direct link between sequence conservation and genomic function of regulatory sequences. In addition to this we provide evidence that putative Sox binding sites in one of the CNEs are essential for induction of lens expression as well as enhancer function in the CNS. Our results show that CNEs identified in pufferfish-mammal whole-genome comparisons are crucial developmental enhancers and hence essential components of gene regulatory networks underlying vertebrate embryogenesis.


Asunto(s)
Cristalino/embriología , Secuencias Reguladoras de Ácidos Nucleicos , Factores de Transcripción SOXB2/fisiología , Proteínas de Pez Cebra/fisiología , Pez Cebra/embriología , Animales , Secuencia Conservada , Regulación del Desarrollo de la Expresión Génica , Genoma , Cristalino/fisiología
4.
JMIR Form Res ; 7: e44138, 2023 Feb 01.
Artículo en Inglés | MEDLINE | ID: mdl-36724014

RESUMEN

BACKGROUND: Anxiety disorders are common and can be debilitating. In addition, various barriers exist that can hinder access to adequate care. Coaching that is grounded in evidence-based interventions and delivered via synchronous (ie, live) text-based messaging could potentially increase the reach of mental health services among populations who select this modality instead of other services (eg, face-to-face coaching and psychotherapy). In addition, the delivery of live messaging coaching within a blended care model has the potential to combine the benefits of coaching with those of evidence-based digital mental health tools. OBJECTIVE: This real-world study evaluates the anxiety and satisfaction outcomes of live messaging coaching blended with digital tools (ie, digital exercises and activities). METHODS: This was a retrospective cohort study of 121 adults with moderate levels of anxiety symptoms at the beginning of coaching (Generalized Anxiety Disorder-7 [GAD-7] scores: range 8-14). Participants received an employer-offered blended messaging coaching (BMC) program, and those who opted to receive all live coaching sessions via text-based messaging were included. Anxiety symptom severity was regularly measured by using the GAD-7 scale. Using growth curve models, the change in GAD-7 scores over the course of BMC was evaluated, as were the effects of text-based coaching sessions on GAD-7 scores. The proportion of participants that had a reliable improvement in anxiety symptom severity (GAD-7 score reduction of ≥4) or subclinical symptom severity (GAD-7 score of <8) at the end of care was also estimated. Participants also self-reported their likelihood of recommending their live messaging coach to someone with similar needs. RESULTS: At baseline, the average GAD-7 score was 9.88 (SD 1.80). Anxiety symptom severity significantly decreased with each week in the BMC program (week: b=-1.04; P<.001), and the rate of decline in anxiety symptom severity decreased over time (week2: b=0.06; P<.001). Each live messaging coaching session was associated with significantly lower anxiety symptom severity during the week of the coaching session (b=-1.56; P<.001) and the week immediately following the session (b=-1.03; P<.001). Overall, 86% (104/121) of participants had subclinical symptom severity or a reliable reduction in anxiety symptom severity by the end of care. Further, 33.1% (40/121) of participants reported coaching satisfaction levels; of the 40 participants in this subset, 37 (92.5%) were likely or extremely likely to recommend their live messaging coach. CONCLUSIONS: BMC that provides coaching sessions via live messaging can be beneficial for adults with moderate symptoms of anxiety who qualify for and self-select this care modality. Large-scale studies with longer follow-ups are needed.

5.
Cancer Lett ; 495: 112-122, 2020 12 28.
Artículo en Inglés | MEDLINE | ID: mdl-32949679

RESUMEN

We hypothesised that synthetic HDL nanoparticles carrying a gemcitabine prodrug and apolipoprotein A-II (sHDLGemA2) would target scavenger receptor-B1 (SR-B1) to preferentially and safely deliver gemcitabine into pancreatic ductal adenocarcinoma (PDAC). We designed, manufactured and characterised sHDLGemA2 nanoparticles sized ~130 nm, incorporating 20 mol% of a gemcitabine prodrug within the lipid bilayer, which strengthens on adding ApoA-II. We measured their ability to inhibit growth in cell lines and cell-derived and patient-derived murine PDAC xenografts. Fluorescent-labelled sHDLGemA2 delivered gemcitabine inside xenografts. Xenograft levels of active gemcitabine after sHDLGemA2 were similar to levels after high-dose free gemcitabine. Growth inhibition in mice receiving 4.5 mg gemcitabine/kg/d, carried in sHDLGemA2, was equivalent to inhibition after high-dose (75 mg/kg/d) free gemcitabine, and greater than inhibition after low-dose (4.5 mg/kg/d) free gemcitabine. sHDLGemA2 slowed growth in semi-resistant cells and a resistant human xenograft. sHDLGemA2 targeted xenografts more effectively than sHDLGemA1. SR-B1 was over-expressed in PDAC cells and xenografts. Targeting by ApoA-II was suppressed by anti-SR-B1. Because sHDLGemA2 provided only ~6% of the free gemcitabine dose for an equivalent response, patient side effects can be greatly reduced, and the sHDLGemA2 concept should be developed through clinical trials.


Asunto(s)
Apolipoproteína A-II/administración & dosificación , Carcinoma Ductal Pancreático/tratamiento farmacológico , Desoxicitidina/análogos & derivados , Neoplasias Pancreáticas/tratamiento farmacológico , Profármacos/administración & dosificación , Receptores Depuradores de Clase B/metabolismo , Animales , Apolipoproteína A-II/química , Apolipoproteína A-II/farmacología , Carcinoma Ductal Pancreático/metabolismo , Línea Celular Tumoral , Proliferación Celular/efectos de los fármacos , Supervivencia Celular/efectos de los fármacos , Desoxicitidina/administración & dosificación , Desoxicitidina/química , Desoxicitidina/farmacología , Relación Dosis-Respuesta a Droga , Sinergismo Farmacológico , Humanos , Lipoproteínas HDL/química , Masculino , Ratones , Nanopartículas , Tamaño de la Partícula , Profármacos/química , Profármacos/farmacología , Ensayos Antitumor por Modelo de Xenoinjerto , Gemcitabina
6.
Schizophr Res ; 216: 479-487, 2020 02.
Artículo en Inglés | MEDLINE | ID: mdl-31812327

RESUMEN

BACKGROUND: Voice-hearing experiences can be distressing and impairing, and existing psychological treatments show modest effectiveness. Ecological momentary assessment and intervention (EMA/I) are two promising approaches which may be used as digital tools to support and enhance existing psychological therapies. The aim of this study was to investigate the potential clinical utility of smartphone-based EMA/I in a blended, coping focused therapy for voice-hearing experiences. METHOD: This pilot RCT focused on feasibility, acceptability and preliminary estimations of efficacy. Thirty-four participants with persisting and distressing voices were randomised to receive the four-session intervention along-side treatment-as-usual (TAU) or TAU-only. RESULTS: Findings supported the feasibility and acceptability of the approach, with good engagement and satisfaction rates, and clinical outcomes showed the intervention holds promise for improving coping, overall severity of voices and to some degree their negative impact. CONCLUSION: This is the first examination of the use of EMA/I in a blended therapy for psychotic experiences, with findings suggesting these technologies show promise as clinical tools.


Asunto(s)
Evaluación Ecológica Momentánea , Teléfono Inteligente , Adaptación Psicológica , Estudios de Factibilidad , Audición , Humanos , Proyectos Piloto
7.
Nutrition ; 25(3): 309-15, 2009 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-19041225

RESUMEN

OBJECTIVE: Screening for malnutrition-related complications (MRCs) in hospitalized patients would identify those requiring nutritional intervention and improve resource allocation. Brugler's simplified screening tool (MRCS) ranks the binary pattern of six readily available variables (categorical cutoff values for serum albumin [<31.5 g/L], lymphocyte count [<1.202 x 10(9)/L], and hemoglobin [<99.5 g/L], the presence of high-risk illness, poor nutritional intake and the presence of a wound) to enable automated computerized screening. This study compared the MRCS with a simpler Automated Nutrition Score (ANS; the number of abnormal results from the six variables) and ANS(B) (the number of abnormal results from the three blood measurements) with the Subjective Global Assessment (SGA) for prediction of complications. METHODS: Of 148 consecutive surgical patients, 143 underwent the SGA on admission. Morbidity was prospectively recorded. The six variables of the MRCS were tabulated and correlated with the frequency of complications. Receiver operating characteristic analysis compared the MRCS with the SGA, ANS, and ANS(B). RESULTS: Twenty-two patients had moderate to severe complications, a pretest probability of 15.3%. Patients stratified as higher risk by the SGA, ANS(B), and ANS had post-test probabilities of complications of 28.7%, 37.8%, and 29.3%, respectively. However, a clinically useful prediction of low risk (post-test probability of 1.5%) was demonstrated when the ANS was

Asunto(s)
Mortalidad Hospitalaria , Desnutrición/diagnóstico , Tamizaje Masivo/normas , Evaluación Nutricional , Complicaciones Posoperatorias/epidemiología , Adulto , Anciano , Anciano de 80 o más Años , Área Bajo la Curva , Automatización , Femenino , Hospitalización , Humanos , Masculino , Desnutrición/complicaciones , Desnutrición/mortalidad , Tamizaje Masivo/métodos , Persona de Mediana Edad , Complicaciones Posoperatorias/mortalidad , Valor Predictivo de las Pruebas , Curva ROC , Reproducibilidad de los Resultados , Sensibilidad y Especificidad , Adulto Joven
8.
Neurosciences (Riyadh) ; 14(1): 84-8, 2009 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-21048582

RESUMEN

Glioblastoma multiforme (GBM) is a highly malignant glial tumor seen commonly in the cerebral hemispheres, but rarely encountered in the cerebellum. It may occur at any age, but is seen more often in adult age groups. Despite its rarity, GBM should be considered in patients with a ring-enhancing lesion in the cerebellum. No consensus regarding the best management has yet been established. However, multimodal treatment is currently available to deal with these lesions: wide excision with radiochemotherapy may improve and prolong the patients life. Although the outcome remains dismal, we emphasize that timely multi modal treatment may provide the patient a better outcome and longer life. Herein, we report 2 new cases of cerebellar GBM and discuss their outcome and present a review of the relevant literature.

9.
PLoS Biol ; 3(1): e7, 2005 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-15630479

RESUMEN

In addition to protein coding sequence, the human genome contains a significant amount of regulatory DNA, the identification of which is proving somewhat recalcitrant to both in silico and functional methods. An approach that has been used with some success is comparative sequence analysis, whereby equivalent genomic regions from different organisms are compared in order to identify both similarities and differences. In general, similarities in sequence between highly divergent organisms imply functional constraint. We have used a whole-genome comparison between humans and the pufferfish, Fugu rubripes, to identify nearly 1,400 highly conserved non-coding sequences. Given the evolutionary divergence between these species, it is likely that these sequences are found in, and furthermore are essential to, all vertebrates. Most, and possibly all, of these sequences are located in and around genes that act as developmental regulators. Some of these sequences are over 90% identical across more than 500 bases, being more highly conserved than coding sequence between these two species. Despite this, we cannot find any similar sequences in invertebrate genomes. In order to begin to functionally test this set of sequences, we have used a rapid in vivo assay system using zebrafish embryos that allows tissue-specific enhancer activity to be identified. Functional data is presented for highly conserved non-coding sequences associated with four unrelated developmental regulators (SOX21, PAX6, HLXB9, and SHH), in order to demonstrate the suitability of this screen to a wide range of genes and expression patterns. Of 25 sequence elements tested around these four genes, 23 show significant enhancer activity in one or more tissues. We have identified a set of non-coding sequences that are highly conserved throughout vertebrates. They are found in clusters across the human genome, principally around genes that are implicated in the regulation of development, including many transcription factors. These highly conserved non-coding sequences are likely to form part of the genomic circuitry that uniquely defines vertebrate development.


Asunto(s)
Regulación del Desarrollo de la Expresión Génica , Genoma Humano , Secuencias Reguladoras de Ácidos Nucleicos , Takifugu/genética , Animales , Secuencia Conservada , Bases de Datos Genéticas , Elementos de Facilitación Genéticos , Proteínas del Ojo/metabolismo , Genoma , Proteínas Fluorescentes Verdes/metabolismo , Proteínas Hedgehog , Proteínas del Grupo de Alta Movilidad/metabolismo , Proteínas de Homeodominio/metabolismo , Humanos , Datos de Secuencia Molecular , Familia de Multigenes , Proteínas de Neoplasias/metabolismo , Factor de Transcripción PAX6 , Factores de Transcripción Paired Box/metabolismo , Proteínas Represoras/metabolismo , Factores de Transcripción SOXB2 , Análisis de Secuencia de ADN , Especificidad de la Especie , Transactivadores/metabolismo , Factores de Transcripción/metabolismo
10.
Internet Interv ; 14: 18-25, 2018 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-30510910

RESUMEN

Common approaches to the psychological treatment of distressing voice hearing experiences, such as cognitive behavioural therapy, aim to promote more adaptive cognitive, emotional and behavioural responses to these experiences. Digital technologies such as smartphones show promise for supporting and enhancing these treatments by linking immediate therapeutic settings to the context of daily life. Two promising technologies include ecological momentary assessment and intervention (EMA/I), which may offer a means of advanced assessment and support in daily life, and inform the tailoring of interventions to suit individual needs. In this study, a highly novel intervention approach was developed involving four face-to-face sessions with a psychologist blended with EMA/I between sessions in order to improve coping with distressing voice hearing experiences. The authors describe the background and development of this approach along-side a single case illustration, which supported feasibility and acceptability. This study details how digital technologies such as EMA/I may be used in future as clinical tools to enhance standard psychological treatments and clinical care of people with persisting and distressing experiences.

11.
Trials ; 19(1): 262, 2018 May 02.
Artículo en Inglés | MEDLINE | ID: mdl-29720208

RESUMEN

BACKGROUND: Smartphone-based ecological momentary assessment and intervention (EMA/I) show promise for enhancing psychological treatments for psychosis. EMA has the potential to improve assessment and formulation of experiences which fluctuate day-to-day, and EMI may be used to prompt use of therapeutic strategies in daily life. The current study is an examination of these capabilities in the context of a brief, coping-focused intervention for distressing voice hearing experiences. METHODS/DESIGN: This is a rater-blinded, pilot randomised controlled trial comparing a four-session intervention in conjunction with use of smartphone EMA/I between sessions, versus treatment-as-usual. The recruitment target is 34 participants with persisting and distressing voice hearing experiences, recruited through a Voices Clinic based in Melbourne, Australia, and via wider advertising. Allocation will be made using minimisation procedure, balancing of the frequency of voices between groups. Assessments are completed at baseline and 8 weeks post-baseline. The primary outcomes of this trial will focus on feasibility and acceptability of the intervention and trial methodology, with secondary outcomes examining preliminary clinical effects related to overall voice severity, the emotional and functional impact of the voices, and emotional distress. DISCUSSION: This study offers a highly novel examination of specific smartphone capabilities and their integration with traditional psychological treatment for distressing voices. Such technology has potential to enhance psychological interventions and promote adaptation to distressing experiences. TRIAL REGISTRATION: Australian New Zealand Clinical Trial Registry, ACTRN12617000348358 . Registered on 7 March 2017.


Asunto(s)
Adaptación Psicológica , Percepción Auditiva , Evaluación Ecológica Momentánea , Alucinaciones/terapia , Aplicaciones Móviles , Psicoterapia/instrumentación , Teléfono Inteligente , Telemedicina/instrumentación , Voz , Actividades Cotidianas , Estudios de Factibilidad , Alucinaciones/diagnóstico , Alucinaciones/psicología , Humanos , Proyectos Piloto , Ensayos Clínicos Controlados Aleatorios como Asunto , Factores de Tiempo , Resultado del Tratamiento , Victoria
12.
J Clin Neurosci ; 12(8): 915-20; discussion 921, 2005 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-16326271

RESUMEN

BACKGROUND: Most primary brain cancers are associated with a dismal prognosis because of their aggressive behaviour and high mortality. Surgical resection with adjuvant radiotherapy is a major treatment for these cancers but little has been published about their surgical management in Australia. OBJECTIVE: To determine changes since 1977 in demographic characteristics, tumour frequencies, surgical management, morbidity and survival for 1,339 patients discharged with astrocytoma (A) and oligodendroglioma (O), which comprise the majority of primary brain cancers, recorded prospectively in northern Sydney neurosurgery databases. Discharges were grouped into eras reflecting changes in diagnostic and surgical technology. RESULTS: Between eras 1977-79 and 1999-2002, mean age increased by 9.5 years, and inpatient stay fell from 21 to 9 days. The proportion of O rose as A fell. Of 144 re-biopsies, 16% had less anaplastic pathology, 54% the same and 30% more anaplastic pathology than the first biopsy. Stereotactically assisted surgery increased, with overall rates of burr hole for biopsy decreasing and of craniotomy rising. Between 1980-86 and 1999-2002, inpatient mortality declined from 7.3 to 2.3% of discharges, reopening of craniotomy and wound complication rates fell, while postoperative neurological deficit rose. Deep vein thrombosis and pulmonary embolism rates for discharges increased significantly. Age and histopathologic grade were predictors of survival from 1980. Sex and era of diagnosis did not influence survival. After adjustment for age using proportional hazards regression, survival improved only for anaplastic A, with a 60% improvement for patients diagnosed in era 3, and a 50% improvement for patients diagnosed in era 4 relative to those in era 1. CONCLUSIONS: Although markers of inpatient care have improved since the 1980s, age-adjusted survival has not increased except for patients with anaplastic A.


Asunto(s)
Astrocitoma/cirugía , Neoplasias Encefálicas/cirugía , Procedimientos Neuroquirúrgicos/estadística & datos numéricos , Oligodendroglioma/cirugía , Complicaciones Posoperatorias , Astrocitoma/mortalidad , Australia , Neoplasias Encefálicas/mortalidad , Femenino , Humanos , Tiempo de Internación/estadística & datos numéricos , Masculino , Oligodendroglioma/mortalidad , Pronóstico , Resultado del Tratamiento
13.
J Clin Neurosci ; 12(6): 697-9, 2005 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-16115553

RESUMEN

Although virtually any systemic malignancy is capable of metastasizing to the brain, ovarian carcinoma, one of the more common female genital malignancies, is one of the rarer forms of brain metastases. In general, the outcome for ovarian carcinoma with brain metastases is extremely poor as most of these patients have widespread lesions elsewhere. This report describes the first known case of multiple cerebral and leptomeningeal metastases as the initial manifestation of ovarian carcinoma in a 41-year old woman who presented with a one-week history of headache, vomiting and confusion. CT scan of the brain was unremarkable, but lumbar puncture revealed atypical cells in the CSF. MRI scan of the brain showed multiple small enhancing lesions. Craniotomy for excision of one of these lesions demonstrated metastatic adenocarcinoma. A large ovarian tumour identified on pelvic CT scan was resected and the patient subsequently received chemotherapy and radiotherapy. Unfortunately she continued to decline and died within six months. Unlike primary tumours such as malignant melanoma, ovarian carcinoma does not have a predilection for the central nervous system (CNS), but the rare instances with CNS involvement occur at an advanced stage of the disease. Once the CNS is involved, the outcome is abysmal, even with multimodality therapy. It is extremely unusual for ovarian carcinoma to present with multiple CNS involvement.


Asunto(s)
Neoplasias Encefálicas/secundario , Carcinoma/patología , Neoplasias Meníngeas/secundario , Neoplasias Ováricas/patología , Adulto , Neoplasias Encefálicas/cirugía , Carcinoma/cirugía , Craneotomía/métodos , Femenino , Humanos , Imagen por Resonancia Magnética/métodos , Neoplasias Meníngeas/cirugía , Neoplasias Ováricas/cirugía , Tomografía Computarizada por Rayos X/métodos
14.
Surg Technol Int ; 14: 69-76, 2005.
Artículo en Inglés | MEDLINE | ID: mdl-16525957

RESUMEN

Acceptance is increasing for pharmacological prophylaxis against deep vein thrombosis (DVT) and pulmonary embolism (PE) for most types of surgery, but its use remains controversial in neurosurgical patients because of the threat of catastrophic hemorrhage. Consequently, mechanical measures such as sequential calf compression and graduated compression stockings are currently the preferred prophylaxis for neurosurgical patients. However, some patients remain at high risk despite these measures and may require prophylaxis with low molecular weight heparins or unfractionated heparin. In neurosurgical patients, known risk factors for DVT or PE include advanced age, malignancy, limb weakness, prolonged surgery, and cranial as opposed to spinal surgery. Using comprehensive neurosurgery databases, the authors identify more specific neurosurgical diagnoses and procedures as risk factors for DVT and PE, and show increases in the frequency of DVT and PE for the wider neurosurgery population and for glioma patients over time. DVT prophylaxis is compared in public and private hospital settings. This chapter contributes to the changing picture of DVT and PE in neurosurgical patients over the last two decades.


Asunto(s)
Procedimientos Neuroquirúrgicos/efectos adversos , Embolia Pulmonar/prevención & control , Trombosis de la Vena/prevención & control , Anticoagulantes/uso terapéutico , Vendajes , Heparina/uso terapéutico , Heparina de Bajo-Peso-Molecular/uso terapéutico , Historia del Siglo XVIII , Historia del Siglo XIX , Historia del Siglo XX , Historia del Siglo XXI , Historia Medieval , Humanos , Enfermedades del Sistema Nervioso/complicaciones , Enfermedades del Sistema Nervioso/cirugía , Embolia Pulmonar/etiología , Factores de Riesgo , Trombosis de la Vena/etiología , Trombosis de la Vena/historia
15.
Front Psychol ; 6: 1129, 2015.
Artículo en Inglés | MEDLINE | ID: mdl-26300821

RESUMEN

A primary goal of cognitive behavior therapy for psychosis (CBTp) is to reduce distress and disability, not to change the positive symptoms of psychosis, such as hearing voices. Despite demonstrated associations between beliefs about voices and distress, the effects of CBTp on reducing voice distress are disappointing. Research has begun to explore the role that the psychological construct of "self" (which includes numerous facets such as self-reflection, self-schema and self-concept) might play in causing and maintaining distress and disability in voice hearers. However, attempts to clarify and integrate these different perspectives within the voice hearing literature, or to explore their clinical implications, are still in their infancy. This paper outlines how the self has been conceptualised in the psychosis and CBT literatures, followed by a review of the evidence regarding the proposed role of this construct in the etiology of and adaptation to voice hearing experiences. We go on to discuss some of the specific intervention methods that aim to target these aspects of self-experience and end by identifying key research questions in this area. Notably, we suggest that interventions specifically targeting aspects of self-experience, including self-affection, self-reflection, self-schema and self-concept, may be sufficient to reduce distress and disruption in the context of hearing voices, a suggestion that now requires further empirical investigation.

16.
Neurosurg Focus ; 17(4): E4, 2004 Oct 15.
Artículo en Inglés | MEDLINE | ID: mdl-15633990

RESUMEN

OBJECT: Management of disease in patients undergoing neurosurgical treatment for tumors requires balancing the competing risks of hemorrhage and thrombosis. The authors compared the incidence of clinically apparent deep venous thrombosis (DVT) and pulmonary embolism (PE) in patients admitted for treatment of intracranial and spinal tumors at three institutions. At the public hospital (the Royal North Shore Hospital [RNSH]) nonsequential calf compression was used, and at the other two private neurosurgery services sequential calf compression with low-molecular-weight heparin was used in patients undergoing spinal surgery. All patients wore compression stockings and underwent follow-up scanning after surgery. METHODS: The authors identified from their neurosurgery databases 2779 discharges of patients with tumor from the RNSH and private hospitals between January 1, 1995 and December 31, 2003. Patient admissions were relatively well matched for age, sex, duration of stay, and tumor type. For patients who underwent spinal surgery, the incidence of DVT was higher in the RNSH (2.6% of admissions) than in private hospitals, where no case of DVT was seen (p = 0.02). The incidence of PE was higher in admissions patients who had been treated for cranial tumors in the RNSH (2.9%) than in those treated in the private hospitals (1.3%, p = 0.01). Possible reasons for these discrepancies include a higher proportion of ambulatory patients before and after surgery in the group treated at private hospitals. More emergency and semi-emergency surgery was performed in the RNSH than in the private hospitals. Nevertheless, fewer patients discharged from the RNSH had undergone surgery, which is a known risk factor for DVT. CONCLUSIONS: Patients with intracranial tumors had a higher incidence of PE than those with spinal tumors. The incidence of DVT and PE was higher in patients admitted to the public hospital. The incidence of DVT in patients undergoing spinal procedures was lower when low-molecular-weight heparin was used judiciously, but the incidence of PE in patients undergoing cranial procedures was lower with the private hospital protocol, which did not include prophylaxis with anticoagulating agents.


Asunto(s)
Neoplasias Encefálicas/epidemiología , Hospitales Privados/tendencias , Hospitales Públicos/tendencias , Procedimientos Neuroquirúrgicos/tendencias , Neoplasias de la Médula Espinal/epidemiología , Trombosis de la Vena/epidemiología , Anticoagulantes/uso terapéutico , Neoplasias Encefálicas/cirugía , Distribución de Chi-Cuadrado , Femenino , Hospitales Privados/estadística & datos numéricos , Hospitales Públicos/estadística & datos numéricos , Humanos , Masculino , Persona de Mediana Edad , Procedimientos Neuroquirúrgicos/estadística & datos numéricos , Estudios Retrospectivos , Neoplasias de la Médula Espinal/cirugía , Trombosis de la Vena/tratamiento farmacológico , Trombosis de la Vena/prevención & control
17.
J Clin Neurosci ; 11(2): 190-4, 2004 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-14732382

RESUMEN

Brain metastasis from thymic carcinoma is extremely rare, and there is still no consensus regarding the best management of thymic metastasis to the central nervous system. Here, we report the first-known Australian case. A review of the current literature and the characteristics of thymic tumours with brain metastasis indicate that aggressive management may be able to improve long-term outcomes for these patients. A 49-year-old man presented 2 weeks after thoracotomy for thymic carcinoma resection with a 2-day history of headache, right-sided weakness and expressive dysphasia. CT and MR scans revealed two metastatic brain lesions, one within the left frontal lobe with cystic necrosis and haemorrhage, the other deep in the parietal lobe adjacent to the left ventricle with a lesser degree of haemorrhage. The patient underwent frameless stereotactic craniotomy for excision of the frontal lesion. Histopathology confirmed poorly differentiated thymic carcinoma. Post-operatively his weakness and speech improved dramatically, and he was discharged home within a week, with radiotherapy and chemotherapy to follow. However, he represented with rapidly worsening symptoms and died within a week. Thymic carcinoma is a rare tumour, displaying malignant features clinically and histopathologically with local invasion to adjacent organs. Metastasis is predominantly to lung, bone, liver and kidney, with less predilection for the central nervous system. Treatment for thymic carcinoma is multimodal, but outcome remains poor and life expectancy is very short when brain metastasis with haemorrhage is present.


Asunto(s)
Neoplasias Encefálicas/complicaciones , Neoplasias Encefálicas/secundario , Hemorragias Intracraneales/etiología , Timoma/patología , Neoplasias del Timo/patología , Humanos , Imagen por Resonancia Magnética , Masculino , Persona de Mediana Edad , Tomografía Computarizada por Rayos X
18.
J Clin Neurosci ; 11(1): 31-6, 2004 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-14642362

RESUMEN

OBJECTIVE AND IMPORTANCE: Increasing interest in evidence-based medicine has created a demand for accurate and accessible information on activity and trends in clinical practice. A database of all neurosurgery admissions at a teaching hospital maintained by a scientist has been utilised to examine changes in practice and complications from 1977 to 2001. METHODS: A relational database, set up in 1982, now contains an unbroken record of all neurosurgical admissions at Royal North Shore Hospital (RNSH) since 1976. It supplies information for morbidity and mortality meetings, research and administrative purposes. A total of 23,766 admissions from 1977 to 2001 were examined. Statistical analysis of trends in age, gender, length of stay (LOS), diagnostic mix, surgery rates and complications in admissions was based on diagnostic groupings. RESULTS: Proportions of vascular admissions rose and of trauma admissions fell. Mean age increased significantly for tumour, trauma and spinal patients; geometric mean LOS declined significantly for tumour, spine, vascular, cranial nerve and peripheral nerve groups. Concurrently, inpatient death rate fell significantly for tumour and vascular patients. Deep vein thrombosis (DVT) rose significantly for trauma, vascular, tumour, spinal and infection patients; pulmonary embolism (PE) rose significantly for tumour, trauma and spinal patients. There was no significant change in wound infection rate at approximately 3.5% of all operated patients. Wound haematoma rates fell significantly from 4.0% to 2.9% while the rate of postoperative cerebrospinal fluid (CSF) leak rose significantly from 0.5% to 2.0% of all operated patients. CONCLUSION: The value of the database is demonstrated by its ability to provide analysis which shows statistically significant changes over time. Declining death rate and LOS indicate improved efficiency in managing patients, but these are offset by rising rates of CSF leak, DVT and PE. Such rises reflect the changing patterns of casemix and surgery performed, and increasing financial pressures on hospital departments.


Asunto(s)
Hospitales/estadística & datos numéricos , Procedimientos Neuroquirúrgicos/estadística & datos numéricos , Procedimientos Neuroquirúrgicos/tendencias , Complicaciones Posoperatorias , Revisión de Utilización de Recursos , Adulto , Encefalopatías/tratamiento farmacológico , Bases de Datos Factuales , Femenino , Humanos , Masculino , Persona de Mediana Edad , Procedimientos Neuroquirúrgicos/métodos , Estudios Retrospectivos , Resultado del Tratamiento
19.
Front Psychol ; 5: 740, 2014.
Artículo en Inglés | MEDLINE | ID: mdl-25101019

RESUMEN

Although the traits of psychopathic personality (psychopathy) have received extensive attention from researchers in forensic psychology, psychopathology, and personality psychology, the relations of these traits to aspects of everyday functioning are poorly understood. Using a large internet survey of members of the general population (N = 3388), we examined the association between psychopathic traits, as measured by a brief but well-validated self-report measure, and occupational choice, political orientation, religious affiliation, and geographical residence. Psychopathic traits, especially those linked to fearless dominance, were positively and moderately associated with holding leadership and management positions, as well as high-risk occupations. In addition, psychopathic traits were positively associated with political conservatism, lack of belief in God, and living in Europe as opposed to the United States, although the magnitudes of these statistical effects were generally small in magnitude. Our findings offer preliminary evidence that psychopathic personality traits display meaningful response penetration into daily functioning, and raise provocative questions for future research.

20.
Neuro Oncol ; 13(7): 783-90, 2011 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-21727214

RESUMEN

There are conflicting reports from Europe and North America regarding trends in the incidence of primary brain tumor, whereas the incidence of primary brain tumors in Australia is currently unknown. We aimed to determine the incidence in Australia with age-, sex-, and benign-versus-malignant histology-specific analyses. A multicenter study was performed in the state of New South Wales (NSW) and the Australian Capital Territory (ACT), which has a combined population of >7 million with >97% rate of population retention for medical care. We retrospectively mined pathology databases servicing neurosurgical centers in NSW and ACT for histologically confirmed primary brain tumors diagnosed from January 2000 through December 2008. Data were weighted for patient outflow and data completeness. Incidence rates were age standardized and trends analyzed using joinpoint analysis. A weighted total of 7651 primary brain tumors were analyzed. The overall US-standardized incidence of primary brain tumors was 11.3 cases 100 000 person-years (±0.13; 95% confidence interval, 9.8-12.3) during the study period with no significant linear increase. A significant increase in primary malignant brain tumors from 2000 to 2008 was observed; this appears to be largely due to an increase in malignant tumor incidence in the ≥65-year age group. This collection represents the most contemporary data on primary brain tumor incidence in Australia. Whether the observed increase in malignant primary brain tumors, particularly in persons aged ≥65 years, is due to improved detection, diagnosis, and care delivery or a true change in incidence remains undetermined. We recommend a direct, uniform, and centralized approach to monitoring primary brain tumor incidence that can be independent of multiple interstate cancer registries.


Asunto(s)
Neoplasias Encefálicas/mortalidad , Adolescente , Adulto , Factores de Edad , Anciano , Australia/epidemiología , Neoplasias Encefálicas/epidemiología , Neoplasias Encefálicas/terapia , Niño , Preescolar , Bases de Datos Factuales , Femenino , Humanos , Incidencia , Lactante , Recién Nacido , Masculino , Persona de Mediana Edad , Pronóstico , Sistema de Registros , Estudios Retrospectivos , Tasa de Supervivencia , Factores de Tiempo , Adulto Joven
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