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1.
Radiography (Lond) ; 30(1): 95-99, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-37879122

RESUMO

INTRODUCTION: Ultra-high field MRI (UHF MRI) is rapidly becoming an essential part of our toolbox within health care and research studies; therefore, we need to get a deeper understanding of the physiological effects of ultra-high field. This study aims to investigate the cognitive performance of healthy participants in a 7 T (T) MRI environment in connection with subjectively experienced effects. METHODS: We measured cognitive performance before and after a 1-h 7T MRI scanning session using a Digit Symbol Substitution Test (DSST) in 42 subjects. Furthermore, a computer-based survey regarding the subjectively experienced effects in connection with the MRI examination was distributed. Similarly, two DSSTs were also performed by a control group of 40 participants. RESULTS: Even though dizziness was the strongest sensory perception in connection to the MRI scanning, we did not find any correlation between dizziness and cognitive performance. Whilst the control group improved (p=<0.001) on their second DSST the MRI group showed no significant difference (p=0.741) in the DSST before and after MRI scanning. CONCLUSION: Transient effect on cognition after undergoing MRI scanning can't be ruled out as the expected learning effect on the DSST was not observed. IMPLICATIONS FOR PRACTICE: Increasing understanding of the possible adverse effects may guide operators in performing UHF MRI in a safe way and with person-centered care. Furthermore, it can guide researchers in setting up research protocols to minimize confounding factors in their fMRI studies due to the transient adverse effects of the UHF environment.


Assuntos
Cognição , Tontura , Humanos , Tontura/etiologia , Voluntários Saudáveis , Cognição/fisiologia , Imageamento por Ressonância Magnética/métodos , Inquéritos e Questionários
2.
BMC Rheumatol ; 6(1): 22, 2022 Apr 20.
Artigo em Inglês | MEDLINE | ID: mdl-35440096

RESUMO

BACKGROUND: Previous research has provided evidence for cognitive dysfunction as a common symptom of systemic lupus erythematosus (SLE). In light of this, the primary goal of this study was to investigate how cognitive impairment in this patient group develops over time. In addition, the present dataset contributes to delineating the specific abilities that are impaired in SLE patients as well as answering the question whether the disease affects the cognition of SLE patients with neuropsychiatric manifestations (NPSLE) and without (non-NPSLE) in distinct ways. METHODS: 91 female participants (33 NPSLE, 29 non-NPSLE, 29 healthy controls (HC)) underwent standardized neurocognitive testing. A total of ten different cognitive abilities were assessed, among others executive function, memory, and attention. Some of the participants (30 NPSLE patients, 22 non-NPSLE, 13 HC) were tested twice (mean time between testing sessions: 50 months) to enable longitudinal tracking of cognitive abilities. Analyses of Variance (ANOVA) were conducted to determine whether cognitive performance differed cross-sectionally between the groups. Linear mixed effects models were fit to investigate performance differences between the groups over time. RESULTS: Cross-sectional analysis at follow-up demonstrated that the cognitive performance of both NPSLE and non-NPSLE was significantly lower than that of HC for the motor speed and the psychomotor speed domain. Additionally, NPSLE patients performed significantly weaker than HC in the complex attention domain. At the same time, the cross-sectional data did not yield any support for performance differences between NPSLE and non-NPSLE patients. Weak positive correlations between disease duration and psychomotor speed, motor speed and reaction time emerged. A temporal progression of cognitive dysfunction in SLE patients was not confirmed. CONCLUSIONS: Cognitive performance is affected in both non-NPSLE and NPSLE patients. However, a linear decline in performance over time could not be verified. More in-depth longitudinal assessments of cognition in SLE patients are needed to establish how cognitive abilities in this patient population develop over time.

3.
J Intern Med ; 289(3): 411-419, 2021 03.
Artigo em Inglês | MEDLINE | ID: mdl-33258156

RESUMO

BACKGROUND: Hypercoagulability and thromboembolism are prominent features of severe COVID-19, and ongoing anticoagulant use might be protective. METHODS: We conducted a nationwide register-based cohort study in Sweden, February through May, 2020, to assess whether ongoing direct oral anticoagulant (DOAC) use was associated with reduced risk of hospital admission for laboratory-confirmed COVID-19, or a composite of intensive care unit (ICU) admission or death due to laboratory-confirmed COVID-19. RESULTS: DOAC use (n = 103 703) was not associated with reduced risk of hospital admission for COVID-19 (adjusted hazard ratio [aHR] [95% confidence interval] 1.00 [0.75-1.33] vs. nonuse atrial fibrillation comparator [n = 36 875]; and aHR 0.94 [0.80-1.10] vs. nonuse cardiovascular disease comparator [n = 355 699]), or ICU admission or death due to COVID-19 (aHRs 0.76 [0.51-1.12], and 0.90 [0.71-1.15], respectively). CONCLUSION: Ongoing DOAC use was not associated with reduced risk of severe COVID-19, indicating that prognosis would not be modified by early outpatient DOAC initiation.


Assuntos
Anticoagulantes/administração & dosagem , Transtornos da Coagulação Sanguínea/tratamento farmacológico , Transtornos da Coagulação Sanguínea/virologia , COVID-19/complicações , Administração Oral , Idoso , Idoso de 80 Anos ou mais , Fibrilação Atrial/tratamento farmacológico , Flutter Atrial/tratamento farmacológico , Transtornos da Coagulação Sanguínea/epidemiologia , Transtornos da Coagulação Sanguínea/mortalidade , COVID-19/epidemiologia , COVID-19/mortalidade , Feminino , Humanos , Unidades de Terapia Intensiva/estatística & dados numéricos , Masculino , Pessoa de Meia-Idade , Pneumonia Viral/epidemiologia , Pneumonia Viral/mortalidade , Pneumonia Viral/virologia , Prognóstico , Sistema de Registros , Fatores de Risco , SARS-CoV-2 , Suécia/epidemiologia
4.
Psychiatry Res Neuroimaging ; 300: 111079, 2020 06 30.
Artigo em Inglês | MEDLINE | ID: mdl-32283474

RESUMO

Heart rate variability (HRV), a measurement of autonomic nervous system (ANS) activity, has been found reduced in schizophrenia. The anterior cingulate cortex (ACC), which is important in regulating the ANS, is structurally and functionally affected in schizophrenia. We investigate the relationship between HRV and functional and structural connectivity of the ACC in patients with schizophrenia and healthy controls. Ten patients with a diagnosis of schizophrenia and ten healthy controls were recruited. Heart rate was monitored in a naturalistic out-of-clinic setting. Magnetic resonance imaging (MRI) was performed, including resting-state functional MRI and diffusion tensor imaging. Patients with schizophrenia had significantly lower HRV compared to controls. A positive correlation between ACC connectivity with the bilateral cerebellum and HRV was found in the patients. HRV was also positively correlated with amplitude of low frequency fluctuations (ALFF) in the cerebellum, and with axial diffusivity in the middle cerebellar peduncle, in the patients. There was a significant negative relationship between antipsychotic medication dosage, HRV and all neuroimaging measures related to HRV. We conclude that ACC connectivity seems to be affected in schizophrenia, both structurally and functionally, and that the ACC-cerebellum connectivity, as well as cerebellar function, is associated with ANS regulation in patients with schizophrenia.


Assuntos
Sistema Nervoso Autônomo/fisiopatologia , Frequência Cardíaca/fisiologia , Rede Nervosa/fisiopatologia , Esquizofrenia/fisiopatologia , Adulto , Antipsicóticos/uso terapêutico , Sistema Nervoso Autônomo/diagnóstico por imagem , Estudos de Casos e Controles , Cerebelo/diagnóstico por imagem , Cerebelo/fisiopatologia , Imagem de Tensor de Difusão , Feminino , Giro do Cíngulo/diagnóstico por imagem , Giro do Cíngulo/fisiopatologia , Humanos , Imageamento por Ressonância Magnética/métodos , Masculino , Pessoa de Meia-Idade , Rede Nervosa/diagnóstico por imagem , Esquizofrenia/diagnóstico por imagem , Esquizofrenia/tratamento farmacológico
5.
BMC Anesthesiol ; 19(1): 45, 2019 03 30.
Artigo em Inglês | MEDLINE | ID: mdl-30927909

RESUMO

BACKGROUND: TEG6S® and TEG5000® (Haemonetics Corp, USA) are haemostasis analysers that measure viscoelasticity properties of whole blood. Both use different mechanisms to assess similar components of the coagulation process. The aim of this study was to assess agreement and interchangeability between the TEG6S and TEG5000 analysers. METHODS: 3.5 mL whole blood was collected from 25 adult patients in a tertiary intensive care unit (ICU). Analysis was performed using TEG6S and TEG5000 haemostatic platforms. Agreement between platforms was measured using Lin's concordance coefficient (Lin's CC), further validated using intraclass correlation coefficients and reduced major axis regression (RMAR). RESULTS: Sixteen (64%) patients were male; mean (range) age: 59yo (23-86). TEG6S and TEG5000 systems were broadly interchangeable. The majority of TEG variables demonstrated almost perfect or substantial agreement and minimal proportional bias (maximum amplitude demonstrated a fixed bias). LY30%, however, demonstrated poor agreement and a proportional bias. Lin's CC coefficients (95% CI, RMAR slope, intercept) between TEG6S and TEG5000 variables were: R time: 0.78 (0.64-0.92, 0.76, 0.92); K time: 0.82 (0.69-0.94, 1.30, - 0.93); alpha angle: 0.79 (0.64-0.95, 1.04, - 1.43); maximum amplitude (MA): 0.90 (0.83-0.96, 0.99, - 5.0); LY30%: 0.34 (0.1-0.58, 0.43, 0.04). CONCLUSIONS: Adult patients with critical illness demonstrate almost perfect agreement in the R time and MA, substantial agreement in K time and alpha angle, but poor agreement in LY30%, as measured by the TEG6S and TEG5000 analysers. With the exception of LY30%, the TEG6S and TEG5000 platforms appear interchangeable. This has important implications for use in clinical practice and multi-site research programs. TRIAL REGISTRATION: ANZCRT number: 12617000062325 , registered 12/Jan17. Retrospectively registered.


Assuntos
Coagulação Sanguínea/fisiologia , Estado Terminal/terapia , Hemostasia/fisiologia , Tromboelastografia/métodos , Tromboelastografia/normas , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Adulto Jovem
6.
Lupus ; 27(7): 1140-1149, 2018 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-29523054

RESUMO

Aim The aim of this study was to evaluate the extent of white matter lesions, atrophy of the hippocampus and corpus callosum, and their correlation with cognitive dysfunction (CD), in patients diagnosed with systemic lupus erythematosus (SLE). Methods Seventy SLE patients and 25 healthy individuals (HIs) were included in the study. To evaluate the different SLE and neuropsychiatric SLE (NPSLE) definition schemes, patients were grouped both according to the American College of Rheumatology (ACR) definition, as well as the more stringent ACR-Systemic Lupus International Collaborating Clinics definition. Patients and HIs underwent a 3 Tesla brain MRI and a standardized neuropsychological test. MRI data were evaluated for number and volume of white matter lesions and atrophy of the hippocampus and corpus callosum. Differences between groups and subgroups were evaluated for significance. Number and volume of white matter lesions and atrophy of the hippocampus and corpus callosum were correlated to cognitive dysfunction. Results The total volume of white matter lesions was significantly larger in SLE patients compared to HIs ( p = 0.004). However, no significant differences were seen between the different SLE subgroups. Atrophy of the bilateral hippocampus was significantly more pronounced in patients with NPSLE compared to those with non-NPSLE (right: p = 0.010; left p = 0.023). Significant negative correlations between cognitive test scores on verbal memory and number and volume of white matter lesions were present. Conclusion SLE patients have a significantly larger volume of white matter lesions on MRI compared to HIs and the degree of white matter lesion volume correlates to cognitive dysfunction, specifically to verbal memory. No significant differences in the number or volume of white matter lesions were identified between subgroups of SLE patients regardless of the definition model used.


Assuntos
Encéfalo/patologia , Disfunção Cognitiva/patologia , Lúpus Eritematoso Sistêmico/patologia , Vasculite Associada ao Lúpus do Sistema Nervoso Central/patologia , Substância Branca/patologia , Adulto , Atrofia , Estudos de Coortes , Estudos Transversais , Feminino , Humanos , Lúpus Eritematoso Sistêmico/complicações , Lúpus Eritematoso Sistêmico/diagnóstico por imagem , Imageamento por Ressonância Magnética , Pessoa de Meia-Idade
8.
Magn Reson Imaging ; 45: 113-119, 2018 01.
Artigo em Inglês | MEDLINE | ID: mdl-28359912

RESUMO

Knowledge concerning the normal aging of cerebral white matter will improve our understanding of abnormal changes in neurodegenerative diseases. The microstructural basis of white matter maturation and aging can be investigated using diffusion tensor imaging (DTI). Generally, diffusion anisotropy increases during childhood and adolescence followed by a decline in middle age. However, this process is subject to spatial variations between tracts. The aim of this study was to investigate to what extent age-related variations also occur within tracts. DTI parameters were compared between segments of two white matter tracts, the cingulate bundle (CB) and the inferior fronto-occipital fasciculus (IFO), in 257 healthy individuals between 13 and 84years of age. Segments of the CB and the IFO were extracted and parameters for each segment were averaged across the hemispheres. The data was analysed as a function of age. Results show that age-related changes differ both between and within individual tracts. Different age trajectories were observed in all segments of the analysed tracts for all DTI parameters. In conclusion, aging does not affect white matter tracts uniformly but is regionally specific; both between and within white matter tracts.


Assuntos
Envelhecimento/fisiologia , Imagem de Difusão por Ressonância Magnética/métodos , Imagem de Tensor de Difusão/métodos , Substância Branca/diagnóstico por imagem , Substância Branca/fisiopatologia , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Adulto Jovem
9.
Acta Anaesthesiol Scand ; 61(10): 1286-1295, 2017 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-28857121

RESUMO

BACKGROUND: We evaluated whether plasma endostatin predicts acute kidney injury (AKI), need for renal replacement therapy (RRT), or death. METHODS: Prospective, observational, multicenter study from 1 September 2011 to 1 February 2012 with data from 17 intensive care units (ICUs) in Finland. RESULTS: A total of 1112 patients were analyzed. We measured plasma endostatin within 2 h of ICU admission. Early AKI (KDIGO stage within 12 h of ICU admission) was found in 20% of the cohort, and 18% developed late AKI (KDIGO criteria > 12 h from ICU admission). Median (IQR) admission endostatin was higher in the early AKI group, 29 (19.1, 41.9) ng/ml as compared to 22.4 (16.1, 30.1) ng/ml for the late AKI group, and 18 (14.0, 23.6) ng/ml for non-AKI patients (P < 0.001). Endostatin level increased with increasing KDIGO stage. Significantly higher endostatin levels were found in patients with sepsis as compared to those without. Predictive properties for AKI, RRT, and mortality were low with corresponding areas under the receiver operating characteristic curve (AUC) of 0.62, 0.67, and 0.59. Sensitivity analyses among patients with chronic kidney disease or sepsis did not improve the predictive ability of endostatin. Adding endostatin to a clinical AKI prediction model (illness severity score, urine output, and age) insignificantly changed the AUC from 0.67 to 0.70 (P = 0.14). CONCLUSIONS: Endostatin increases with AKI severity but has limited value as a predictor of AKI, RRT and 90-day mortality in patients admitted to ICU. Moreover, endostatin does not improve AKI risk prediction when added to a clinical risk model.


Assuntos
Injúria Renal Aguda/sangue , Estado Terminal , Endostatinas/sangue , Injúria Renal Aguda/mortalidade , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Índice de Gravidade de Doença
10.
Eur J Cardiovasc Nurs ; 16(4): 299-308, 2017 04.
Artigo em Inglês | MEDLINE | ID: mdl-27470053

RESUMO

INTRODUCTION: There is increasing evidence supporting the relationship between family support and patient outcomes. Therefore, involving families in the care of cardiovascular patients is expected to be beneficial for patients. The quality of the encounter with families highly depends on the attitudes of nurses towards the importance of families in patient care. AIM: The aim of this study was to describe the attitudes of nurses towards family involvement in patient care and to investigate the individual contributions of demographic, professional and regional background characteristics. METHOD: A survey was distributed among cardiovascular nurses attending an international conference in Norway and a national conference in Belgium. Nurses were asked to complete a questionnaire, including the Families' Importance in Nursing Care - Nurses' Attitudes scale. The study population consisted of respondents from Belgium ( n = 348) and from Scandinavian countries (Norway, Sweden and Denmark; n = 77). RESULTS: In general, nurses viewed the family as important in care. However, attitudes towards actively inviting families to take part in patient care were less positive. Higher educational level and a main practice role in research, education or management were significantly associated with more positive attitudes. Furthermore, the attitudes of respondents living in Scandinavia were more positive as compared to the attitudes of respondents living in Belgium. CONCLUSION: Education on the importance of families and active family involvement in patient care seems to be necessary in basic, undergraduate education, but also in clinical practice. More research is necessary in order to explore the cultural and regional differences in the attitudes of nurses towards the involvement of families in patient care.


Assuntos
Atitude do Pessoal de Saúde , Doenças Cardiovasculares/terapia , Cuidadores , Relações Interpessoais , Recursos Humanos de Enfermagem Hospitalar/psicologia , Adulto , Bélgica , Dinamarca , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Noruega , Suécia
11.
Acta Anaesthesiol Scand ; 60(7): 925-33, 2016 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-27030514

RESUMO

BACKGROUND: Several studies have shown an association between a positive fluid balance and increased mortality in patients with septic shock. This may have led to a more restrictive use of intravenous fluids. The association between fluid accumulation and mortality in the setting of a more restrictive use of intravenous fluids, however, is uncertain. We therefore aimed to investigate the association between a cumulative fluid balance 3 days after randomization and 90-day mortality in a recent Nordic multicentre cohort of patients with septic shock. METHODS: A post hoc analysis of patients from the Transfusion Requirements in Septic Shock (TRISS) trial treated for 3 days or more in the ICU after randomization. The patients were categorized into four groups depending on their weight-adjusted cumulative fluid balance after 3 days. We performed multivariable Cox regression analysis, adjusting for important prognostics (study site, age, chronic cardiovascular and chronic lung disease, haematologic malignancy, chronic dialysis, source of infection, baseline SOFA score and plasma lactate). RESULTS: The median cumulative fluid balance of the 841 included patients was 2480 ml (IQR 47-5045). The median time from ICU admission to inclusion in the trial was 22 h. The overall 90-day mortality was 52%. There was no statistically significant association between fluid balance 3 days from inclusion and 90-day mortality after the adjustment for the prognostics (P = 0.37). CONCLUSION: In our cohort of patients with septic shock and a comparably low cumulative fluid balance, there was no association between fluid balance and mortality. However, the study design and the limited power preclude strong conclusions. There is an urgent need for high-quality trials assessing the benefit and harm of different fluid volume strategies in patients with septic shock.


Assuntos
Choque Séptico , Equilíbrio Hidroeletrolítico , Transfusão de Sangue , Humanos , Transfusão de Plaquetas , Prognóstico
12.
Anaesth Intensive Care ; 43(6): 750-6, 2015 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-26603800

RESUMO

There is little consensus on the definition or optimal constituents of fluid bolus therapy (FBT), and there is uncertainty regarding its physiological effects. The aims of this study were to determine clinician-reported definitions of FBT and to explore the physiological responses clinicians expect from such FBT. In June and October 2014, intensive care and emergency physicians in Australia and New Zealand were asked to participate in an electronic questionnaire of the reported practice and expectations of FBT. Two hundred and fifty-one questionnaires were completed, 65.3% from intensivists. We identified the prototypical FBT given by intensivists is more than 250 ml of compound sodium lactate, saline or 4% albumin given in less than 30 minutes, while that given by emergency department physicians is a similar volume of saline delivered over a similar time frame. Intensive care and emergency physicians expected significantly different changes in mean arterial pressure (P=0.001) and heart rate (P=0.033) following FBT. Substantial variation was demonstrated in the magnitude of expected response within both specialties for each variable. Major variations exist in self-reported FBT practice, both within and between acute specialties, and wide variation can be demonstrated in the expected physiological responses to FBT. International explorations of practice and prospective quantification of the actual physiological response to FBT are warranted.


Assuntos
Cuidados Críticos , Serviços Médicos de Emergência , Hidratação , Humanos
13.
Minerva Anestesiol ; 81(11): 1192-200, 2015 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-25479470

RESUMO

BACKGROUND: Labile iron is important in the pathogenesis of acute kidney injury (AKI). Neutrophil gelatinase-associated lipocalin (NGAL) and hepcidin control iron metabolism and are upregulated during renal stress. However, higher levels of urinary NGAL are associated with AKI severity whereas higher urinary hepcidin levels are associated with absence of AKI. We aimed to investigate the value of combining both biomarkers to estimate the severity and progression of AKI in intensive care unit (ICU) patients. METHODS: Urinary NGAL and hepcidin were quantified within 48 hours of ICU admission in patients with the systemic inflammatory response syndrome and early kidney dysfunction (oliguria for ≥ 2 hours and/or a 25 µmol/L creatinine rise from baseline). Diagnostic and prognostic characteristics were assessed by logistic regression and receiver operating characteristics (ROC) analysis. RESULTS: Of 102 patients, 26 had mild AKI and 28 patients had severe AKI on admission. Sepsis (21%), cardiac surgery (17%) and liver failure (9%) were primary admission diagnoses. NGAL increased (P=0.03) whereas hepcidin decreased (P=0.01) with increasing AKI severity. The value of NGAL/hepcidin ratio to detect severe AKI was higher than when NGAL and hepcidin were used individually and persisted after adjusting for potential confounders (adjusted OR 2.40, 95% CI 1.20-4.78). The ROC areas for predicting worsening AKI were 0.50, 0.52 and 0.48 for NGAL, 1/hepcidin and the NGAL/hepcidin ratio. CONCLUSION: The NGAL/hepcidin ratio is more strongly associated with severe AKI than the single biomarkers alone. NGAL and hepcidin, alone or combined as a ratio, were unable to predict progressive AKI in this selected ICU cohort.


Assuntos
Injúria Renal Aguda/sangue , Injúria Renal Aguda/diagnóstico , Biomarcadores/sangue , Cuidados Críticos/métodos , Hepcidinas/sangue , Lipocalina-2/sangue , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Pacientes , Valor Preditivo dos Testes , Estudos Prospectivos
14.
Photochem Photobiol Sci ; 13(8): 1185-91, 2014 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-24943653

RESUMO

Low aqueous solubility of porphyrin-based photosensitizers hampers their clinical use in photodynamic therapy because of complex delivery. In this study, we explore meso-tetra(m-hydroxyphenyl)-21,23H-porphyrin (mTHPP), a potent photosensitizer, covalently attached to ß-cyclodextrin (CD-mTHPP) with a focus on topical delivery and cellular uptake. The photophysical properties of CD-mTHPP were examined using steady-state fluorescence and lifetime measurements verifying increased aqueous solubility. Confocal and fluorescence lifetime imaging microscopy on human squamous carcinoma cells (A431) evidenced a cytoplasmic uptake of CD-mTHPP in predominantly monomeric form. CD-mTHPP was also delivered to human skin ex vivo and the skin penetration was assessed using two-photon fluorescence microscopy. The results indicated that CD-mTHPP exhibits improved skin distribution compared to mTHPP alone using aqueous vehicles. Thus the CD-mTHPP conjugate demonstrates improved biodistribution ex vivo compared to mTHPP and is a promising multimodal system for photodynamic therapy.


Assuntos
Fármacos Fotossensibilizantes/química , Fármacos Fotossensibilizantes/farmacocinética , Porfirinas/química , Porfirinas/farmacocinética , beta-Ciclodextrinas/química , beta-Ciclodextrinas/farmacocinética , Transporte Biológico Ativo , Carcinoma de Células Escamosas/metabolismo , Linhagem Celular Tumoral , Feminino , Humanos , Técnicas In Vitro , Microscopia de Fluorescência por Excitação Multifotônica , Processos Fotoquímicos , Fotoquimioterapia , Pele/metabolismo , Solubilidade , Espectrometria de Fluorescência , Espectrofotometria , Água
15.
Br J Anaesth ; 109(6): 843-50, 2012 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-23048068

RESUMO

Acute kidney injury (AKI) has a number of triggers, including ischaemia, nephrotoxins, radiocontrast, and bacterial endotoxins. It occurs in around one-third of patients treated in intensive care unit (ICU) and is even more prevalent in cardiac surgery patients. There is a higher mortality in patients with AKI compared with non-AKI counterparts, and in severe AKI requiring renal support, the 6 month mortality is >50%. Unlike the progressive development of biomarkers in cardiology, there have been few changes in kidney diagnostic markers. Creatinine is still used as an indicator of kidney function but not of the parenchymal kidney injury. Serum creatinine (sCr) concentration does not change until around 50% of kidney function is lost, and varies with muscle mass, age, sex, medications, and hydration status. The lag time between injury and loss of function, risks missing a therapeutic opportunity, and may explain the high associated mortality. Novel biomarkers of AKI- and failure include neutrophil gelatinase-associated lipocalin, N-acetyl-ß-d-glucosaminidase, kidney injury molecule-1, interleukin-18, and cystatin C. The pathophysiology associated with accumulation of these markers in plasma and urine is not clear, but a common denominator is inflammation. Some of these new AKI biomarkers may have clinical applicability in anaesthesia and intensive care in the future. It is possible that a 'kidney biomarker panel' will become standard before and after major surgery. If elevated or positive, the anaesthetist must take special care to optimize the patients after operation on the surgical wards or ICU to avoid further nephrotoxic insults and initiate supplementary care.


Assuntos
Injúria Renal Aguda/diagnóstico , Acetilglucosaminidase/sangue , Acetilglucosaminidase/urina , Injúria Renal Aguda/sangue , Injúria Renal Aguda/urina , Proteínas de Fase Aguda/urina , Biomarcadores/sangue , Biomarcadores/urina , Creatinina/sangue , Creatinina/urina , Cistatina C/sangue , Cistatina C/urina , Receptor Celular 1 do Vírus da Hepatite A , Humanos , Interleucina-18/sangue , Interleucina-18/urina , Lipocalina-2 , Lipocalinas/sangue , Lipocalinas/urina , Glicoproteínas de Membrana/sangue , Glicoproteínas de Membrana/urina , Cuidados Pós-Operatórios/métodos , Proteínas Proto-Oncogênicas/sangue , Proteínas Proto-Oncogênicas/urina , Receptores Virais/sangue
16.
Acta Anaesthesiol Scand ; 56(2): 138-46, 2012 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-22092145

RESUMO

BACKGROUND: Acute kidney injury (AKI) necessitating renal replacement therapy (RRT) is associated with high short-term mortality, relatively little however is known of the long-term outcome in these patients. This narrative review describes renal recovery, long-term mortality, and quality of life in RRT patients with acute kidney injury. METHODS: A literature search using the PubMed search engine from the year 2000 to present with the MeSH terms 1) acute kidney injury, renal replacement therapy, prognosis, and 2) acute kidney injury, quality of life, prognosis, was performed, including studies addressing long-term outcome (over 60 days) in adults with AKI on RRT. RESULTS: According to inclusion criteria, twenty two studies were eligible. Outcome varied depending on AKI aetiology, setting, co-morbidity and pre-morbid renal function. Five-year-survival was between 15% and 35%, with dialysis dependence in less than 10% of survivors. Renal recovery, even if incomplete occurred during the first year. Quality of life assessment amongst survivors indicated moderate physical impairment and reduced mental health scores. A majority of patients returned to employment and self-sustainability and reported acceptable to good quality of life. Over 90% of patients indicated that they would undergo the same treatment again. DISCUSSION AND CONCLUSIONS: Early initiation of treatment and fine-tuning of the RRT technique may improve outcome. Consensus regarding AKI definitions, renal function measurement and standardised follow-up regimens are required. Further long-term studies are needed.


Assuntos
Falência Renal Crônica/psicologia , Falência Renal Crônica/terapia , Terapia de Substituição Renal , Estudos de Coortes , Humanos , Falência Renal Crônica/etiologia , Falência Renal Crônica/mortalidade , Testes de Função Renal , Assistência de Longa Duração , Qualidade de Vida , Recuperação de Função Fisiológica , Resultado do Tratamento
17.
Eur J Cardiovasc Nurs ; 9(1): 24-9, 2010 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-20005178

RESUMO

BACKGROUND: Cardiac patients may experience problems with sexual activity as a result of their disease, medications or anxiety and nurses play an important role in sexual counselling. We studied the practice, responsibility and confidence of cardiac nurses in the sexual counselling of these patients. METHOD: An adapted version of the nurses' survey of sexual counselling of MI patients was administered during a scientific meeting of the Council on Cardiovascular Nursing and Allied Professionals within the European Society of Cardiology. RESULTS: Most of the 157 cardiovascular nurses (87%) who completed the survey felt responsible to discuss sexual concerns with their clients, especially when patients initiated a discussion. However in practice, most respondents rarely addressed sexual issues. The items that nurses reported to counsel patients were closely related to the cardiac disease, symptoms and medications and seldom more sensitive subjects (e.g. foreplay, positions). Nurses estimated that their patients could be upset (67%), embarrassed (72%) or anxious (68%) if they were asked about sexual concerns. One-fifth of the nurses felt they had insufficient knowledge and 40% sometimes hesitated to discuss sexual concerns with clients because they might not know how to answer questions. Additional education on sexuality was significantly related to being more comfortable and active in sexual counselling. CONCLUSION: Although cardiac nurses feel responsible and not anxious discussing patients' sexual concerns, these issues are not often discussed in daily practice. Nurses might need more knowledge and specific practical training in providing information on sexual concerns and sexual counselling to cardiac patients.


Assuntos
Atitude do Pessoal de Saúde , Conhecimentos, Atitudes e Prática em Saúde , Cardiopatias/enfermagem , Recursos Humanos de Enfermagem/psicologia , Aconselhamento Sexual/estatística & dados numéricos , Adulto , Instituições de Assistência Ambulatorial , Ansiedade/enfermagem , Ansiedade/psicologia , Institutos de Cardiologia , Feminino , Pesquisas sobre Atenção à Saúde , Cardiopatias/psicologia , Cardiopatias/reabilitação , Humanos , Masculino , Pessoa de Meia-Idade , Relações Enfermeiro-Paciente , Enfermagem em Reabilitação/métodos , Autoimagem , Inquéritos e Questionários
18.
Eur J Cardiovasc Nurs ; 5(3): 197-205, 2006 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-16766225

RESUMO

BACKGROUND: The ESC guidelines recommend that an organised system of specialist heart failure (HF) care should be established to improve outcomes of HF patients. The aim of this study was therefore to identify the number and the content of HF management programmes in Europe. METHOD: A two-phase descriptive study was conducted: an initial screening to identify the existence of HF management programmes; and a survey to describe the content in countries where at least 30% of the hospitals had a programme. RESULTS: Of the 43 European countries approached, 26 (60%) estimated the percentage of HF management programmes. Seven countries reported that they had such programmes in more than 30% of their hospitals. Of the 673 hospitals responding to the questionnaire, 426 (63%) had a HF management programme. Half of the programmes (n = 205) were located in an outpatient clinic. In the UK a combination of hospital and home-based programmes was common (75%). The most programmes included physical examination, telephone consultation, patient education, drug titration and diagnostic testing. Most (89%) programmes involved nurses and physicians. Multi-disciplinary teams were active in 56% of the HF programmes. The most prominent differences between the 7 countries were the degree of collaboration with home care and GP's, the role in palliative care and the funding. CONCLUSION: Only a few European countries have a large number of organised programmes for HF care and follow up. To improve outcomes of HF patients throughout Europe more effort should be taken to increase the number of these programmes in all countries.


Assuntos
Assistência Integral à Saúde/organização & administração , Continuidade da Assistência ao Paciente/organização & administração , Gerenciamento Clínico , Insuficiência Cardíaca/terapia , Equipe de Assistência ao Paciente/organização & administração , Assistência ao Convalescente/organização & administração , Assistência Ambulatorial/organização & administração , Comportamento Cooperativo , Europa (Continente) , Terapia por Exercício/organização & administração , Medicina de Família e Comunidade/organização & administração , Necessidades e Demandas de Serviços de Saúde , Pesquisa sobre Serviços de Saúde , Insuficiência Cardíaca/epidemiologia , Serviços de Assistência Domiciliar/organização & administração , Humanos , Avaliação de Resultados em Cuidados de Saúde , Alta do Paciente , Educação de Pacientes como Assunto/organização & administração , Guias de Prática Clínica como Assunto , Avaliação de Programas e Projetos de Saúde , Encaminhamento e Consulta/organização & administração , Inquéritos e Questionários , Gestão da Qualidade Total/organização & administração
19.
J Nurs Manag ; 14(5): 414-23, 2006 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-16787477

RESUMO

OBJECTIVES: The aim of the investigation was to describe situations with a significant influence on healthy diet and exercise habits among nurses working night shift. METHODS: A qualitative descriptive design with a Critical Incident Technique approach was used. Situations were collected by means of interviews with 27 registered/enrolled community nurses. RESULTS: A total of 143 situations were identified comprising two main areas: coping ability at work and coping ability during leisure hours. Coping ability at work included 81 critical incidents grouped into two categories: the nurses' diet and exercise habits were influenced by social interaction with colleagues at work and by the disruption to their circadian rhythm. Coping ability during leisure hours included 62 critical incidents grouped into two categories: the diet and exercise habits were influenced when the nurses recovered from the disruption to their circadian rhythm and when they took advantage of the freedom of action offered by night work. CONCLUSIONS: By identifying the factors that influence diet and exercise habits among nurses working night shift, strategies can be developed in order to strengthen the factors with a positive influence.


Assuntos
Atitude do Pessoal de Saúde , Exercício Físico/psicologia , Comportamento Alimentar/psicologia , Assistência Noturna/psicologia , Recursos Humanos de Enfermagem Hospitalar/psicologia , Autocuidado , Adaptação Psicológica , Adulto , Feminino , Hábitos , Necessidades e Demandas de Serviços de Saúde , Humanos , Relações Interprofissionais , Atividades de Lazer , Estilo de Vida , Masculino , Pessoa de Meia-Idade , Pesquisa Metodológica em Enfermagem , Enfermagem Prática , Saúde Ocupacional , Pesquisa Qualitativa , Autocuidado/métodos , Autocuidado/psicologia , Transtornos do Sono do Ritmo Circadiano/etiologia , Transtornos do Sono do Ritmo Circadiano/prevenção & controle , Inquéritos e Questionários , Suécia , Tolerância ao Trabalho Programado
20.
Eur J Cardiovasc Nurs ; 5(1): 60-7, 2006 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-16338171

RESUMO

AIM: Recommendations for the management of adults with congenital heart disease indicate that specialist referral centres should employ nurse specialists who are trained and educated in the care for these patients. We surveyed the involvement, education and activities of nurse specialists in the care for adults with congenital cardiac anomalies in Europe. METHODS: The Euro Heart Survey on Adult Congenital Heart Disease has previously showed that 20 out of 48 specialist centres (42%) have nurse specialists affiliated with their programme. Fifteen of these 20 centres (75%) validly completed a web-based survey tool. RESULTS: Specialist centres had a median number of 2 nurse specialists on staff, corresponding with 1 full-time equivalent. In most centres, the nurse specialists were also affiliated with other cardiac care programmes, in addition to congenital heart disease. The involvement of nurse specialists was not related to the caseload of inpatients and outpatient visits. Physical examination was the most prevalent activity undertaken by nurse specialists (93.3%), followed by telephone accessibility (86.7%), patient education (86.7%), co-ordination of care (73.3%), and follow-up after discharge (73.3%). Patient education covered mainly prevention and prophylaxis of endocarditis (100%), cardiovascular risk factors (92.3%), sport activities (92.3%), the type and characteristics of the heart defect (92.3%), the definition and aetiology of endocarditis (84.6%), cardiac risk in case of pregnancy (84.6%), and heredity (84.6%). Two third of the nurse specialists were involved in research. CONCLUSION: This survey revealed gaps in the provision of care for these patients in Europe and demonstrated that there is room for improvement in order to provide adequate chronic disease management. The results of this study can be used by individual hospitals for benchmarking.


Assuntos
Cardiopatias Congênitas/enfermagem , Enfermeiros Clínicos/organização & administração , Adulto , Assistência ao Convalescente , Continuidade da Assistência ao Paciente , Currículo , Europa (Continente) , Diretrizes para o Planejamento em Saúde , Necessidades e Demandas de Serviços de Saúde , Hospitais Especializados , Humanos , Descrição de Cargo , Enfermeiros Clínicos/educação , Papel do Profissional de Enfermagem , Avaliação em Enfermagem , Pesquisa em Avaliação de Enfermagem , Avaliação de Resultados em Cuidados de Saúde , Planejamento de Assistência ao Paciente , Educação de Pacientes como Assunto , Exame Físico/enfermagem , Encaminhamento e Consulta/organização & administração , Medição de Risco , Inquéritos e Questionários , Estudos de Tempo e Movimento
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