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1.
Eur Heart J Suppl ; 22(Suppl N): N65-N79, 2020 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-38626231

RESUMO

Aims: myocardial involvement in the course of Coronavirus disease 2019 (COVID-19) pneumonia has been reported, though not fully characterized yet. Aim of the present study is to undertake a joint evaluation of hs-Troponin and natriuretic peptides (NP) in patients hospitalized for COVID-19 pneumonia. Methods and results: in this multicenter observational study, we analyzed data from n = 111 COVID-19 patients admitted to dedicated "COVID-19" medical units. Hs-Troponin was assessed in n = 103 patients and NP in n = 82 patients on admission; subgroups were identified according to values beyond reference range. increased hs-Troponin and NP were found in 38% and 56% of the cases respectively. As compared to those with normal cardiac biomarkers, these patients were older, had higher prevalence of cardiovascular diseases (CVD) and more severe COVID-19 pneumonia by higher CRP and D-dimer and lower PaO2/FIO2. Two-dimensional echocardiography performed in a subset of patients (n = 24) showed significantly reduced left ventricular ejection fraction in patients with elevated NP only (p = 0.02), whereas right ventricular systolic function (tricuspid annular plane systolic excursion) was significantly reduced both in patients with high hs-Troponin and NP (p = 0.022 and p = 0.03 respectively). On multivariable analysis, independent associations were found of hs-Troponin with age, PaO2/FIO2 and D-dimer (B = 0.419, p = 0.001; B=-0.212, p = 0.013 and B = 0.179, p = 0.037 respectively), and of NP with age and previous CVD (B = 0.480, p < 0.001 and B = 0.253, p = 0.001 respectively). In patients with in-hospital mortality (n = 23, 21%) hs-Troponin and NP were both higher (p = 0.001 and p = 0.002 respectively), while increasing hs-troponin and NP were associated with worse in-hospital prognosis [OR 4.88 (95% CI 1.9-12.2), p = 0.001 (adjusted OR 3.1 (95% CI 1.2-8.5), p = 0.025) and OR 4.67 (95% CI 2-10.8), p < 0.001 (adjusted OR 2.89 (95% CI 1.1-7.9), p = 0.04) respectively]. Receiver operator characteristic curves showed good ability of hs-Troponin and NP in predicting in-hospital mortality (AUC = 0.869 p < 0.001 and AUC = 0.810, p < 0.001 respectively). Conclusion: myocardial involvement at admission is common in COVID-19 pneumonia and associated to worse prognosis, suggesting a role for cardiac biomarkers assessment in COVID-19 risk stratification. Independent associations of hs-Troponin with markers of disease severity and of NP with underlying CVD might point towards existing different mechanisms leading to their elevation in this setting.

2.
Eur J Public Health ; 26(1): 60-4, 2016 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-26136462

RESUMO

OBJECTIVE: To assess the impact of electronic health record (EHR) on healthcare quality, we hence carried out a systematic review and meta-analysis of published studies on this topic. METHODS: PubMed, Web of Knowledge, Scopus and Cochrane Library databases were searched to identify studies that investigated the association between the EHR implementation and process or outcome indicators. Two reviewers screened identified citations and extracted data according to the PRISMA guidelines. Meta-analysis was performed using the random effects model for each indicator. Heterogeneity was quantified using the Cochran Q test and I2 statistics, and publication bias was assessed using the Egger's test. RESULTS: Of the 23 398 citations identified, 47 articles were included in the analysis. Meta-analysis showed an association between EHR use and a reduced documentation time with a difference in mean of -22.4% [95% confidence interval (CI) = -38.8 to -6.0%; P < 0.007]. EHR resulted also associated with a higher guideline adherence with a risk ratio (RR) of 1.33 (95% CI = 1.01 to 1.76; P = 0.049) and a lower number of medication errors with an overall RR of 0.46 (95% CI = 0.38 to 0.55; P < 0.001), and adverse drug effects (ADEs) with an overall RR of 0.66 (95% CI = 0.44 to 0.99; P = 0.045). No association with mortality was evident (P = 0.936). High heterogeneity among the studies was evident. Publication bias was not evident. CONCLUSIONS: EHR system, when properly implemented, can improve the quality of healthcare, increasing time efficiency and guideline adherence and reducing medication errors and ADEs. Strategies for EHR implementation should be therefore recommended and promoted.


Assuntos
Registros Eletrônicos de Saúde/estatística & dados numéricos , Qualidade da Assistência à Saúde/estatística & dados numéricos , Efeitos Colaterais e Reações Adversas Relacionados a Medicamentos/prevenção & controle , Eficiência Organizacional , Fidelidade a Diretrizes/estatística & dados numéricos , Humanos , Erros de Medicação/prevenção & controle , Guias de Prática Clínica como Assunto , Fatores de Tempo
3.
Intern Emerg Med ; 15(8): 1467-1476, 2020 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-32986136

RESUMO

BACKGROUND: Myocardial involvement in the course of coronavirus disease 2019 (COVID-19) pneumonia has been reported, though not fully characterized yet. The aim of the present study is to undertake a joint evaluation of hs-Troponin and natriuretic peptides (NP) in patients hospitalized for COVID-19 pneumonia. METHODS: In this multicenter observational study, we analyzed data from n = 111 patients. Cardiac biomarkers subgroups were identified according to values beyond reference range. RESULTS: Increased hs-Troponin and NP were found in 38 and 56% of the cases, respectively. As compared to those with normal cardiac biomarkers, these patients were older, had higher prevalence of cardiovascular diseases (CVD) and had more severe COVID-19 pneumonia by higher CRP and D-dimer and lower PaO2/FIO2. Two-dimensional echocardiography performed in a subset of patients (n = 24) showed significantly reduced left ventricular ejection fraction in patients with elevated NP (p = 0.02), whereas right ventricular systolic function (tricuspid annular plane systolic excursion) was significantly reduced both in patients with high hs-Troponin and NP (p = 0.022 and p = 0.03, respectively). Both hs-Troponin and NP were higher in patients with in-hospital mortality (p = 0.001 and p = 0.002, respectively). On multivariable analysis, independent associations were found of hs-Troponin with age, PaO2/FIO2 and D-dimer (B = 0.419, p = 0.001; B = - 0.212, p = 0.013; and B = 0.179, p = 0.037, respectively) and of NP with age and previous CVD (B = 0.480, p < 0.001; and B = 0.253, p = 0.001, respectively). CONCLUSIONS: Myocardial involvement at admission is common in COVID-19 pneumonia. Independent associations of hs-Troponin with markers of disease severity and of NP with underlying CVD might point toward existing different mechanisms leading to their elevation in this setting.


Assuntos
Infecções por Coronavirus/sangue , Peptídeos Natriuréticos/análise , Pneumonia Viral/sangue , Pneumonia/sangue , Troponina/análise , Idoso , Idoso de 80 Anos ou mais , Biomarcadores/análise , Biomarcadores/sangue , COVID-19 , Progressão da Doença , Feminino , Humanos , Incidência , Masculino , Pessoa de Meia-Idade , Peptídeos Natriuréticos/sangue , Pandemias/estatística & dados numéricos , Troponina/sangue
4.
Nephrol Dial Transplant ; 24(3): 973-81, 2009 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-18842671

RESUMO

BACKGROUND: In a previous study we demonstrated that mild metabolic alkalosis resulting from standard bicarbonate haemodialysis induces hypotension. In this study, we have further investigated the changes in systemic haemodynamics induced by bicarbonate and calcium, using non-invasive procedures. METHODS: In a randomized controlled trial with a single-blind, crossover design, we sequentially changed the dialysate bicarbonate and calcium concentrations (between 26 and 35 mmol/l for bicarbonate and either 1.25 or 1.50 mmol/l for calcium). Twenty-one patients were enrolled for a total of 756 dialysis sessions. Systemic haemodynamics was evaluated using pulse wave analysers. Bioimpedance and BNP were used to compare the fluid status pattern. RESULTS: The haemodynamic parameters and the pre-dialysis BNP using either a high calcium or bicarbonate concentration were as follows: systolic blood pressure (+5.6 and -4.7 mmHg; P < 0.05 for both), stroke volume (+12.3 and +5.2 ml; P < 0.05 and ns), peripheral resistances (-190 and -171 dyne s cm(-5); P < 0.05 for both), central augmentation index (+1.1% and -2.9%; ns and P < 0.05) and BNP (-5 and -170 ng/l; ns and P < 0.05). The need of staff intervention was similar in all modalities. CONCLUSIONS: Both high bicarbonate and calcium concentrations in the dialysate improve the haemodynamic pattern during dialysis. Bicarbonate reduces arterial stiffness and ameliorates the heart tolerance for volume overload in the interdialytic phase, whereas calcium directly increases stroke volume. The slight hypotensive effect of alkalaemia should motivate a probative reduction of bicarbonate concentration in dialysis fluid for haemodynamic reasons, only in the event of failure of classical tools to prevent intradialytic hypotension.


Assuntos
Bicarbonatos/administração & dosagem , Carbonato de Cálcio/administração & dosagem , Soluções para Hemodiálise/química , Hemodinâmica/fisiologia , Nefropatias/terapia , Diálise Renal/métodos , Adulto , Idoso , Idoso de 80 Anos ou mais , Soluções Tampão , Doença Crônica , Estudos Cross-Over , Relação Dose-Resposta a Droga , Feminino , Humanos , Nefropatias/fisiopatologia , Masculino , Pessoa de Meia-Idade , Método Simples-Cego
5.
BMC Nephrol ; 10: 7, 2009 Mar 05.
Artigo em Inglês | MEDLINE | ID: mdl-19265544

RESUMO

BACKGROUND: A concentrate for bicarbonate haemodialysis acidified with citrate instead of acetate has been marketed in recent years. The small amount of citrate used (one-fifth of the concentration adopted in regional anticoagulation) protects against intradialyser clotting while minimally affecting the calcium concentration. The aim of this study was to compare the impact of citrate- and acetate-based dialysates on systemic haemodynamics, coagulation, acid-base status, calcium balance and dialysis efficiency. METHODS: In 25 patients who underwent a total of 375 dialysis sessions, an acetate dialysate (A) was compared with a citrate dialysate with (C+) or without (C) calcium supplementation (0.25 mmol/L) in a randomised single-blind cross-over study. Systemic haemodynamics were evaluated using pulse-wave analysis. Coagulation, acid-base status, calcium balance and dialysis efficiency were assessed using standard biochemical markers. RESULTS: Patients receiving the citrate dialysate had significantly lower systolic blood pressure (BP) (-4.3 mmHg, p < 0.01) and peripheral resistances (PR) (-51 dyne.sec.cm-5, p < 0.001) while stroke volume was not increased. In hypertensive patients there was a substantial reduction in BP (-7.8 mmHg, p < 0.01). With the C+ dialysate the BP gap was less pronounced but the reduction in PR was even greater (-226 dyne.sec.cm-5, p < 0.001). Analyses of the fluctuations in PR and of subjective tolerance suggested improved haemodynamic stability with the citrate dialysate. Furthermore, an increase in pre-dialysis bicarbonate and a decrease in pre-dialysis BUN, post-dialysis phosphate and ionised calcium were noted. Systemic coagulation activation was not influenced by citrate. CONCLUSION: The positive impact on dialysis efficiency, acid-base status and haemodynamics, as well as the subjective tolerance, together indicate that citrate dialysate can significantly contribute to improving haemodialysis in selected patients.


Assuntos
Acetatos/farmacologia , Equilíbrio Ácido-Base/efeitos dos fármacos , Coagulação Sanguínea/efeitos dos fármacos , Ácido Cítrico/farmacologia , Eletrólitos/sangue , Soluções para Hemodiálise/farmacologia , Hemodinâmica/efeitos dos fármacos , Diálise Renal/métodos , Acetatos/administração & dosagem , Idoso , Idoso de 80 Anos ou mais , Bicarbonatos/administração & dosagem , Nitrogênio da Ureia Sanguínea , Cálcio/administração & dosagem , Cálcio/sangue , Cálcio/farmacologia , Ácido Cítrico/administração & dosagem , Estudos Cross-Over , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Fosfatos/sangue , Método Simples-Cego
6.
J Clin Pharm Ther ; 34(3): 255-60, 2009 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-19646074

RESUMO

AIM: To estimate the prevalence of gingival overgrowth in kidney allograft recipients in southern Switzerland and to determine the factors associated with it. We hypothesized that poor oral hygiene was a risk factor. METHODS: We assessed the level of oral hygiene among renal transplant patients and determined whether a good level of information and regular dental checkups in addition to good oral hygiene could prevent gingival hyperplasia. Seventy-six adults who had undergone kidney transplantation were examined. The level of oral hygiene, gender, age, time elapsed from transplantation, medication and dose were recorded. RESULTS: In general the level of oral hygiene was average. We found a significant association between the severity of gingival overgrowth and the level of oral hygiene. No statistical relationship between gingival hyperplasia and the other recorded variables was detected. Patients on tacrolimus had a tendency to have less gingival hyperplasia. Patient education, along with regular dental checkups and a good level of oral hygiene, should prevent gingival hyperplasia or maintain it at an acceptable level. CONCLUSION: Intensive motivation of patients to maintain good oral hygiene is necessary to reduce the incidence of gingival hyperplasia.


Assuntos
Hiperplasia Gengival/prevenção & controle , Imunossupressores/efeitos adversos , Transplante de Rim , Higiene Bucal , Adulto , Idoso , Inibidores de Calcineurina , Estudos Transversais , Ciclosporina/efeitos adversos , Ciclosporina/farmacologia , Ciclosporina/uso terapêutico , Feminino , Hiperplasia Gengival/induzido quimicamente , Hiperplasia Gengival/epidemiologia , Humanos , Imunossupressores/farmacologia , Imunossupressores/uso terapêutico , Masculino , Pessoa de Meia-Idade , Educação de Pacientes como Assunto , Fatores de Risco , Índice de Gravidade de Doença , Suíça/epidemiologia , Tacrolimo/efeitos adversos , Tacrolimo/farmacologia , Tacrolimo/uso terapêutico
7.
J Nephrol ; 19(2): 183-8, 2006.
Artigo em Inglês | MEDLINE | ID: mdl-16736417

RESUMO

BACKGROUND: To treat permanent hemodialysis (HD) catheter dysfunctions due to thrombosis, as an alternative to pre- and intradialytic instillations/infusions of fibrinolytic agents, for practical reasons, a post-dialysis urokinase lock is often preferred. This study aimed to analyze the consequences on catheter function and the cost/effectiveness of an intermittent post-dialysis urokinase lock. METHODS: A prospective open experimental study enrolling 10 dialysis patients with a Tesio twin catheter locked with either heparin 5,000 IU/mL or escalating urokinase doses. Catheter function was monitored measuring the blood flow obtained with an aspiration pressure of -180 mmHg for 28 consecutive HD sessions. RESULTS: No differences were noticed between the blood flow obtained before and after the lock of the catheter with 5000 U/lumen of urokinase (phase 1), but also with 10,000 U/lumen (phase 2) of urokinase. The incidence of catheter dysfunction episodes in the wash-out in the 1st and in the 2nd urokinase phases were, respectively: 13, 6 and 3% (p<0.05 for both 13 vs. 6% and 13 vs. 3%). 47,000 U of urokinase were necessary to avoid one dysfunction episode potentially treatable with an intradialytic urokinase lock of 10,000 U. Between the average blood flow measured in the initial wash out (230 +/- 27 ml/min) and in the 1st (236 +/- 32 ml/min) and also in the 2nd (247 +/- 34 ml/min) urokinase phases significant differences were noticed (p<0.01 and p<0.05, respectively). CONCLUSIONS: The post-dialysis lock with urokinase is associated with an increase in the catheter blood flow and a re-duction in the occurrence of dysfunction episodes. However, the modest impact on dialysis quality and the apparent unfavorable cost/effectiveness of the prophylactic treatment, call for an investigation of its potential advantages in a larger study.


Assuntos
Cateteres de Demora , Fibrinolíticos/administração & dosagem , Heparina/administração & dosagem , Diálise Renal , Trombose/prevenção & controle , Ativador de Plasminogênio Tipo Uroquinase/administração & dosagem , Idoso , Idoso de 80 Anos ou mais , Cateteres de Demora/efeitos adversos , Cateteres de Demora/economia , Feminino , Fibrinolíticos/economia , Heparina/economia , Humanos , Masculino , Estudos Prospectivos , Diálise Renal/efeitos adversos , Diálise Renal/economia , Trombose/economia , Ativador de Plasminogênio Tipo Uroquinase/economia
8.
BMC Nephrol ; 7: 13, 2006 Sep 18.
Artigo em Inglês | MEDLINE | ID: mdl-16981983

RESUMO

BACKGROUND: Due to its strong intra- and inter-individual variability, predicting the ideal erythropoietin dose is a difficult task. The aim of this study was to re-evaluate the impact of the main parameters known to influence the responsiveness to epoetin beta and to test the performance of artificial neural networks (ANNs) in predicting the dose required to reach the haemoglobin target and the monthly dose adjustments. METHODS: We did a secondary analysis of the survey on Anaemia Management in dialysis patients in Switzerland; a prospective, non-randomized observational study, enrolling 340 patients of 26 centres and in order to have additional information about erythropoietin responsiveness, we included a further 92 patients from the Renal Services of the Ente Ospedaliero Cantonale, Bellinzona, Switzerland. The performance of ANNs in predicting the epoetin dose was compared with that of linear regressions and of nephrologists in charge of the patients. RESULTS: For a specificity of 50%, the sensitivity of ANNs compared with linear regressions in predicting the erythropoietin dose to reach the haemoglobin target was 78 vs. 44% (P < 0.001). The ANN built to predict the monthly adaptations in erythropoietin dose, compared with the nephrologists' opinion, allowed to detect 48 vs. 25% (P < 0.05) of the patients treated with an insufficient dose with a specificity of 92 vs. 83% (P < 0.05). CONCLUSION: In predicting the erythropoietin dose required for an individual patient and the monthly dose adjustments ANNs are superior to nephrologists' opinion. Thus, ANN may be a useful and promising tool that could be implemented in clinical wards to help nephrologists in prescribing erythropoietin.


Assuntos
Anemia/tratamento farmacológico , Quimioterapia Assistida por Computador/métodos , Eritropoetina/administração & dosagem , Sistemas Inteligentes , Nefropatias/terapia , Redes Neurais de Computação , Sistemas Automatizados de Assistência Junto ao Leito , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Anemia/sangue , Anemia/etiologia , Simulação por Computador , Sistemas de Apoio a Decisões Clínicas , Feminino , Hemoglobinas/análise , Humanos , Nefropatias/sangue , Nefropatias/complicações , Masculino , Pessoa de Meia-Idade , Modelos Biológicos , Nefrologia/métodos , Diálise Renal , Reprodutibilidade dos Testes , Sensibilidade e Especificidade , Suíça , Resultado do Tratamento
9.
Swiss Med Wkly ; 135(21-22): 315-7, 2005 May 28.
Artigo em Inglês | MEDLINE | ID: mdl-16034685

RESUMO

We report three years of experience with a newly introduced register for healthy research volunteers in Canton Ticino, Southern Switzerland. The aim of the register was to encourage responsible participation in medical research, and to detect fraud due to volunteers taking part in more than one study at the same time. All healthy volunteers participating in drug studies approved by the Research Ethics Committee were included in the register and given a special code. During three years, in a population of 1436 volunteers involved in 152 studies, 192 subjects (13.4%) were identified as habitual or regular volunteers (they participated regularly, limiting the pause between studies to the minimum of three months as required by the regulations of the Research Ethics Committee). Among them, only three subjects gave false information and were identified. Most volunteers participated in studies only sporadically (54% in one, 21% in two over three years) and 82.4% of the volunteers were involved, on average, in only one study per year. Our register permits fraud detection as well as analysis of the research population from an epidemiological point of view. It has been well accepted from both volunteers and research organisations. It is simple and represents a substantial contribution especially for organisations, which need to recruit a large number of subjects for their research.


Assuntos
Pesquisa Biomédica , Seleção de Pacientes , Sistema de Registros , Voluntários/organização & administração , Ensaios Clínicos como Assunto , Fraude/prevenção & controle , Humanos , Suíça
10.
Eur J Emerg Med ; 12(5): 259-60, 2005 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-16175069

RESUMO

OBJECTIVES: To raise awareness of the possibility of carbon monoxide poisoning as a diagnosis in the emergency department and to present the little known fact that it is possible to diagnose carbon monoxide poisoning retrospectively. METHOD: Presentation of a case report, review of the literature. RESULTS: Persistence of elevated carboxyhaemoglobin levels in a stored vacutainer blood sample. CONCLUSION: Carbon monoxide poisoning is common but often goes unrecognized. This method may help to decrease the number of overlooked cases and thereby possibly prevent further exposure and acute or chronic sequelae.


Assuntos
Intoxicação por Monóxido de Carbono/diagnóstico , Carboxihemoglobina/análise , Competência Clínica , Erros de Diagnóstico , Adulto , Conscientização , Serviço Hospitalar de Emergência , Humanos , Masculino , Fatores de Tempo
11.
Intensive Care Med ; 28(10): 1419-25, 2002 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-12373466

RESUMO

OBJECTIVE: Feasibility and safety evaluation of regional citrate anticoagulation (RCA) versus systemic heparinization for continuous venovenous hemodiafiltration. DESIGN AND SETTING: Combined retrospective and prospective observational study performed in a secondary multidisciplinary intensive care unit of the Ospedale Civico Lugano Switzerland. PATIENTS AND INTERVENTIONS: Twelve hemodynamically unstable patients (median APACHE II score 26, interquartile range 22-29) in whom heparin was judged to be at least temporarily contraindicated. A switch from RCA (predilution setting; same iso-osmotic replacement and dialysis fluid) to heparinization or vice versa was recommended for the final evaluation; 56 dialyzers were used for RCA (1,400 h) and 39 for heparinization (1,271 h). MEASUREMENTS AND RESULTS: Median dialyzer life span was 24.2 h (interquartile range 17.4-42.3) for RCA and 42.5 h (20.6-69.1) for heparinization. Fluid control and dialysis quality were similar in the two groups and required no additional intervention. The risk of significant hypocalcemia and metabolic alkalosis was higher at the beginning of the RCA program and decreased with the further training of the staff. Seven bleeding episodes occurred with heparinization vs. three in RCA. CONCLUSIONS: RCA may be a safe and useful form of anticoagulation which is more expensive than heparinization but helps to minimize bleeding risk. The risk of metabolic complications is higher at the beginning of a new RCA program. For centers lacking experienced staff we suggest reserving this technique for patients with rapid clotting of the extracorporeal circuit if treated without anticoagulation.


Assuntos
Injúria Renal Aguda/terapia , Anticoagulantes/administração & dosagem , Citratos/administração & dosagem , Hemodiafiltração/métodos , APACHE , Idoso , Idoso de 80 Anos ou mais , Alcalose/etiologia , Anticoagulantes/efeitos adversos , Citratos/efeitos adversos , Contraindicações , Estudos de Viabilidade , Feminino , Hemodinâmica , Heparina/administração & dosagem , Humanos , Hipocalcemia/etiologia , Unidades de Terapia Intensiva , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Estudos Retrospectivos , Segurança , Suíça
12.
J Nephrol ; 17(5): 673-8, 2004.
Artigo em Inglês | MEDLINE | ID: mdl-15593034

RESUMO

BACKGROUND: Cystatin C is increasingly used to estimate renal function, but its large intraindividual variability limits its practical value. This study aimed at verifying whether the clinical practice of associating cystatin C determination with serum creatinine (Cr) improved the ability of the Cockcroft and Gault formula to estimate creatinine clearance (CrCl). METHODS: It was an observational cross-sectional study of 134 in-patients with mildly impaired renal function. Using the Hoek et al formula (glomerular filtration rate (GFR)/1.73m2 = - 4.32 + 80.35/cystatin C mg/L), multivariate linear regressions (LREG) and artificial neural networks (ANN), we integrated cystatin C in the Cockcroft and Gault formula and analyzed the potential superiority of this procedure by comparing its performance with that of the two algorithms taken separately. RESULTS: The inclusion of cystatin C in the Cockcroft and Gault formula using the data of an LREG (CrCl = 0.371 x (Hoek et al) + 0.589 x Cockcroft and Gault), a simple mean between the two algorithms or ANN ameliorated the CrCl estimation precision allowing an absolute error reduction of approximately 4, 4 and 6%, respectively (relative values 12, 12 and 17%). CONCLUSIONS: Although the combination of the Hoek et al and Cockcroft and Gault formulae using both linear and non-linear mathematical methods allowed a statistically significant reduction in the estimation error generated by Cockcroft and Gault, considering the small impact on the estimation precision and the large intraindividual variation of both cystatin C and Cr, this procedure probably has no clinical relevance.


Assuntos
Algoritmos , Creatinina/sangue , Creatinina/urina , Cistatinas/sangue , Taxa de Filtração Glomerular , Nefropatias/diagnóstico , Adulto , Idoso , Estudos Transversais , Cistatina C , Feminino , Humanos , Nefropatias/sangue , Nefropatias/urina , Modelos Lineares , Masculino , Pessoa de Meia-Idade , Redes Neurais de Computação , Reprodutibilidade dos Testes
13.
J Nephrol ; 17(6): 819-25, 2004.
Artigo em Inglês | MEDLINE | ID: mdl-15593057

RESUMO

BACKGROUND: It has been claimed that regional citrate anticoagulation (RCA) improves unfavorable calcium and magnesium dependent cellular and humoral events due to blood/dialyzer membrane interactions during hemodialysis (HD). This study aimed to verify whether the favorable effect of RCA on biocompatibility is independent from coagulation pathway modulation. METHODS: A randomized controlled cross-over single blind trial comparing the activity of the coagulation pathway (thrombinantithrombin complexes (TAT), fibrinopeptide A (FPA), prothrombin fragments 1+2 (F 1+2) and D-dimer (DD)), complement activation (C3a) and interleukin-1 beta secretion (IL-1beta) in nine chronic HD patients treated with RCA or heparin. Blood samples were obtained from the arterial (C3a, IL-1beta, TAT, F 1+2, FPA and DD) and venous (TAT, F 1+2, FPA) lines 2 min after starting treatment and repeatedly during the procedure after 15 min (C3a and IL-1beta), 30 min (C3a), 45 (C3a) and 180 min (TAT, F 1+2, FPA and DD). RESULTS: In both treatment protocols significant enhancement was observed in the coagulation activity during the dialysis session, documented by an increase in TAT (p<0.001), F 1+2 (p<0.001) and FPA (p=0.001). Comparing the two anticoagulation modalities, no differences were noticed in the activity of the coagulation pathway, but a significantly higher complement activity (C3a=886 (832-908) vs. 770 (645-857) ng/mL, p<0.05) and lower IL-1beta secretion (235 (206-285) vs. 538 (346-974) pg/mL, p<0.05) was observed in RCA. CONCLUSIONS: Due to an RCA protocol guaranteeing the same extent of anticoagulation activation as standard heparin, we demonstrated that the significantly lower IL-1beta secretion obtained with RCA is independent from the anticoagulation modulation and dissociated from the complement activity.


Assuntos
Anticoagulantes/uso terapêutico , Coagulação Sanguínea/efeitos dos fármacos , Citratos/uso terapêutico , Ativação do Complemento/efeitos dos fármacos , Interleucina-1/metabolismo , Diálise Renal , Antitrombina III , Complemento C3a/metabolismo , Fibrinopeptídeo A/metabolismo , Humanos , Falência Renal Crônica/sangue , Falência Renal Crônica/metabolismo , Falência Renal Crônica/terapia , Fragmentos de Peptídeos/sangue , Peptídeo Hidrolases/sangue , Precursores de Proteínas/sangue , Protrombina , Método Simples-Cego
14.
Swiss Med Wkly ; 143: w13750, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-23443906

RESUMO

QUESTION UNDER STUDY: Data on pain management in haemodialysis patients with end-stage renal disease are scanty. Our study aimed to collect information on the frequency and severity of pain and symptom distress among long-term dialysis patients in southern Switzerland. METHODS: Patients with chronic kidney disease stage 5, on dialysis, treated in five nephrology units in southern Switzerland, who had given informed consent and were able to complete the survey, were interviewed to assess pain and correlated symptoms using a Visual Analogue Scale (VAS), the Brief Pain Inventory and the Edmonton Symptom Assessment System. To evaluate the impact of symptoms, the Instrumental Activities of Daily Living questionnaire was used. RESULTS: One hundred and twenty-three patients, aged 36-90 years and with a mean time on dialysis of 3.5 years, were interviewed. Pain was experienced by 81 patients during the 4 weeks before the interview: 68 had chronic pain; 66 reported pain intensity higher than 5 on the VAS; 35 identified musculoskeletal pain as the most disturbing pain. Five patients used drugs to cope with pain during the night. Asthenia and fatigue were prevalent concomitant symptoms. Asthenia, fatigue, sleep disturbances, dyspnoea, loss of appetite, nausea/vomiting and anxiety were correlated with pain. The majority of the patients reported that their pain limited their daily life activities. CONCLUSIONS: Pain severity and symptom distress in dialysis patients are important, but underestimated and undertreated. They interfere with sleep quality and daily living. Routine assessment of pain burden, pain management similar to that used in palliative care, and adequate analgesic use to treat specific dialysis-associated pain syndromes should be considered in guidelines.


Assuntos
Falência Renal Crônica/complicações , Dor/etiologia , Diálise Renal , Atividades Cotidianas , Adulto , Idoso , Idoso de 80 Anos ou mais , Estudos Transversais , Feminino , Inquéritos Epidemiológicos , Humanos , Falência Renal Crônica/terapia , Modelos Lineares , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Dor/epidemiologia , Medição da Dor , Prevalência , Qualidade de Vida , Índice de Gravidade de Doença , Inquéritos e Questionários
17.
Swiss Med Wkly ; 142: w13578, 2012.
Artigo em Inglês | MEDLINE | ID: mdl-22553112

RESUMO

QUESTIONS UNDER STUDY: We assessed the long-term follow up of all the patients with fibrillary glomerulonephritis diagnosed since 1992 at our centre of reference for renal pathology in Basel. METHODS: We performed a retrospective surveillance study with mail questionnaire based follow-up of all patients with the diagnosis of fibrillary glomerulonephritis found in the database of the department of renal pathology in Basel from 1992 to 2007. The outcome was assessed in terms of endstage renal disease (ESRD), death, reduction of proteinuria and improvement of estimated glomerular filtration rate (eGFR). RESULTS: We obtained sufficient follow up data from 16 out of 20 identified patients. The mean follow up time was 35 months (1-115.1). Six patients died (37.5%), three without having ESRD. Six patients (37.5%) reached ESRD, five of them went on hemodialysis. Thirteen patients (81.3%) received an immunosuppressive therapy with steroids, five of them in combination with cyclophosphamide. The group without immunosuppressive therapy was too small to compare the two groups. In relation to the histological pattern membranous glomerulonephritis (MGN) had a better outcome as compared to the other histological patterns. CONCLUSIONS: FGN is a heterogeneous disease associated with significant risk of ESRD and mortality. The histological type of the glomerulonephritis may influence the course of the disease.


Assuntos
Glomerulonefrite/patologia , Glomerulonefrite/fisiopatologia , Falência Renal Crônica/fisiopatologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Análise de Variância , Ciclofosfamida/uso terapêutico , Progressão da Doença , Feminino , Seguimentos , Taxa de Filtração Glomerular , Glomerulonefrite/complicações , Glomerulonefrite/tratamento farmacológico , Humanos , Imunossupressores/uso terapêutico , Falência Renal Crônica/etiologia , Falência Renal Crônica/terapia , Masculino , Pessoa de Meia-Idade , Diálise Renal , Estatísticas não Paramétricas , Esteroides/uso terapêutico , Fatores de Tempo
19.
NDT Plus ; 2(5): 354-6, 2009 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-25949340

RESUMO

The case history of a 75-year-old woman, who was hospitalized with the diagnosis of an acute erosive colitis, is presented. The patient was treated with hysterectomy for an endometrial cancer in 2000 and had suffered from multiple sclerosis for 15 years. A persistent non-productive cough with fever requested a pneumological consultation. Multiple small alveolar opacities and cavitating lesions were found at chest imaging, but no precise diagnosis was possible. Only 3 weeks after hospitalization, we noticed that a urine analysis had been forgotten. This additional test clearly demonstrated a nephritic sediment and further analysis confirmed the diagnosis of a ANCA-positive microscopic polyangiitis, which promptly responded to immunosuppressive therapy. The necessity of a routine urine analysis in the majority of internal medicine patients and the possible link between small vessel vasculitis and multiple sclerosis are discussed.

20.
Eur J Intern Med ; 20(6): 631-5, 2009 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-19782927

RESUMO

BACKGROUND: Secondary prevention of coronary artery disease is highly effective and implemented on a large scale. However, studies testing adherence to recommended secondary prevention of other vascular diseases are rare. Our goal was to evaluate whether the kind of vascular disease influences prescription practice of secondary drug prophylaxis at hospital discharge and to which extent secondary prevention is actually complete. METHODS: A 3-month prospective observational review of the hospital discharge information of all patients hospitalized because of a vascular disease diagnosis: coronary artery disease (i.e. acute myocardial infarction [AMI] and chronic stable angina [CSA]); peripheral artery disease [PAD] and cerebrovascular disease [CVD]. The analysis was done by board registered internists with a structured form that founded on internationally accepted recommendations. RESULTS: From 271 patients 191 had coronary artery disease (105 AMI and 86 CSA), 88 PAD and 72 CVD. Global prescription rate (mean; 95% CI) of indicated secondary prophylaxis drugs was 74.1% (69.9-78.2) for AMI, 72.4% (67.2-77.5) for CSA, 74.7% (68.8-80.7) for PAD and 72.1% (66.9-77.3) for CVD. The proportion of patients who were prescribed a complete bundle of recommended medications was globally 29.5% (24.1-35.0). CONCLUSIONS: We found similar global prescription rates of secondary prevention for the different vascular diseases. However, only one third of the studied collective gets a complete set of required prophylactic drugs.


Assuntos
Hospitalização , Prevenção Secundária , Doenças Vasculares/prevenção & controle , Idoso , Prescrições de Medicamentos/estatística & dados numéricos , Feminino , Humanos , Masculino , Estudos Prospectivos
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