4,003 research outputs found
Tilt Testing in the Diagnosis and Treatment of Syncope
A síncope neurocardiogénica é uma
entidade com prevalência e incidência
significativas. Apesar da baixa mortalidade
relacionada com esta entidade, são
significativas as implicações na qualidade
de vida dos doentes. A metodologia para o
seu diagnóstico está hoje claramente
estabelecida nas recomendações
internacionais e o teste de inclinação é um
elemento útil na abordagem diagnóstica, em
particular na síncope recorrente de causa
desconhecida e frequente. Vários protocolos
têm vindo a ser descritos nos últimos anos,
inicialmente passivos e posteriormente com
introdução de agentes provocativos, dos
quais os nitratos sub-linguais são os mais
largamente aceites, pela simplicidade e
bons resultados da sua utilização. O recurso
ao teste de inclinação na avaliação da
terapêutica está limitado por problemas
relacionados com a reprodutibilidade, que
contudo estão na base de uma forma de
tratamento – o treino de ortostatismo (tilt
training) – embora com taxas de sucesso
variáveis.
Na presente revisão, iremos abordar os
vários aspectos relacionados com a
aplicação do teste de inclinação na prática
clínica
Induced liver injury after high-dose methylprednisolone in a patient with multiple sclerosis
A 33-year-old woman with multiple sclerosis, medicated with high doses of methylprednisolone, cyclophosphamide and glatiramer acetate, was referred to our department due to acute liver injury. The laboratory investigation was normal except for weakly positive antinuclear antibodies. Cyclophosphamide and glatiramer acetate were suspended, and intravenous immunoglobulin with maintenance of high doses of methylprednisolone was initiated. The patient developed another episode of acute hepatitis so the immunoglobulin was stopped. After that, she had three more episodes of elevation of liver enzymes with no hepatic insufficiency while medicated only with high doses of methylprednisolone. At this time, liver biopsy showed focal centrilobubar hepatocyte necrosis with minimal interface hepatitis. After the high doses of methylprednisolone were suspended, the patient remained asymptomatic, with normal hepatic enzymes. This case emphasises that, although rare, induced liver injury after high doses of methylprednisolone can occur.info:eu-repo/semantics/publishedVersio
Gwyneth Walker’s use of melodic motive and tonal centricity to depict E. E. Cummings’ Poetry in the Cycle “though love be a day.”
I. Opera Role: Thursday, April 11, 2013, 7:30 p.m., Taylor Theatre. Noémie in Cendrillon (Jules Massenet) II. Solo Recital: Sunday, April 21, 2013, 5:30 p.m., Recital Hall. "The Blessed Virgin's Expostulation" (Henry Purcell, realized by Benjamin Britten); "Suleika I" D. 720 , "Suleika II" D. 717 (Franz Schubert); "Nur wer die Sehnuscht kennt," "Heiβ mich nicht redden, heiβ mich schweigen," "So laβt mich scheinen, bis ich werde" from Lieder und Gesänge aus Wilhelm Meister, op. 98a (Robert Schumann); "Solveigs Sang," "Solveigs Vuggesang" from Peer Gynt, op. 23 (Edvard Grieg); Try Me, Good King Last Words of the Wives of Henvry VIII (Libby Larsen) III. Solo Recital: Sunday, April 13, 2014, 5:30 p.m., Recital Hall. "Wir eilen mit schwachen, doch emsigen Schritten" from Jesu, der du meine Seele, BWV 78 (Johann Sebastian Bach); "Wenn des Kreuzes Bitterkeiten" from Was Gott tut, das ist wohlgetan, BWV 99 (Johann Sebastian Bach); "Слезы," "В огороде, возле броду," "Рассвет" from Шесть Дуэтов (Six Duets), op. 46 (Pyotr Ilyich Tchaikovsky); "La pesca" from Soirées musicales (Gioacchino Rossini), "Le gittane" from Péchés de vieillesse (Gioacchino Rossini); Pavane, op. 50 (Gabriel Fauré), El desdichado (Camille Saint-Saëns); Chanson Espagnole (Claude Debussy); "Rede, Mädchen, allzu liebes," "Die grüne Hopfenranke," "Ein kleiner, hübscher Vogel," "Wenn so lind dein Aug emir," "Am Donaustrande, da steht ein Haus," "Nein, es ist nicht auszukommen," "Schlosser auf! Und mache Schlösser," "Ein dunkeler Schacht ist Liebe," "Es bebet das Gesträuche" from Liebeslieder Walzer, op. 52 (Johannes Brahms) IV. Solo Recital: Sunday, October 26, 2014, 5:30 p.m., Recital Hall. The Telephone (Gian-Carlo Menotti) V. D.M.A. Research Project. GWYNETH WALKER'S USE OF MELODIC MOTIVE AND TONAL CENTIRICITY TO DEPICT E. E. CUMMINGS' POETRY IN THE CYCLE "THOUGH LOVE BE A DAY." This document provides an overview of E. E. Cummings' and Gwyneth Walker's biographical information and artistic output before analyzing the harmonic and melodic motives Walker uses in the four settings of E. E. Cummings poetry found in this song cycle
Is It Possible to Simplify Risk Stratification Scores for Patients with ST-Segment Elevation Myocardial Infarction Undergoing Primary Angioplasty?
INTRODUCTION: There are several risk scores for stratification of patients with ST-segment elevation myocardial infarction (STEMI), the most widely used of which are the TIMI and GRACE scores. However, these are complex and require several variables. The aim of this study was to obtain a reduced model with fewer variables and similar predictive and discriminative ability.
METHODS: We studied 607 patients (age 62 years, SD=13; 76% male) who were admitted with STEMI and underwent successful primary angioplasty. Our endpoints were all-cause in-hospital and 30-day mortality. Considering all variables from the TIMI and GRACE risk scores, multivariate logistic regression models were fitted to the data to identify the variables that best predicted death.
RESULTS: Compared to the TIMI score, the GRACE score had better predictive and discriminative performance for in-hospital mortality, with similar results for 30-day mortality. After data modeling, the variables with highest predictive ability were age, serum creatinine, heart failure and the occurrence of cardiac arrest. The new predictive model was compared with the GRACE risk score, after internal validation using 10-fold cross validation. A similar discriminative performance was obtained and some improvement was achieved in estimates of probabilities of death (increased for patients who died and decreased for those who did not).
CONCLUSION: It is possible to simplify risk stratification scores for STEMI and primary angioplasty using only four variables (age, serum creatinine, heart failure and cardiac arrest). This simplified model maintained a good predictive and discriminative performance for short-term mortality
Utilidade do Strain Bidimensional por Speckle Tracking da Aurícula e Ventrículo Direito para Predizer Arritmias Tardias em Doentes Adultos com Tetralogia de Fallot Corrigida
OBJECTIVE:
To determine whether right ventricular and/or atrial speckle tracking strain is associated with previous arrhythmic events in patients with repaired tetralogy of Fallot.
METHODS AND RESULTS:
We studied right ventricular and atrial strain in 100 consecutive patients with repaired tetralogy of Fallot referred for routine echocardiographic evaluation. Patients were divided into two groups, one with previous documentation of arrhythmias (n=26) and one without arrhythmias, in a median follow-up of 22 years. Patients with arrhythmias were older (p<0.001) and had surgical repair at an older age (p=0.001). They also had significantly reduced right ventricular strain (-14.7±5.5 vs. -16.9±4.0%, p=0.029) and right atrial strain (19.1±7.7% vs. 25.8±11.4%, p=0.001). Neither right ventricular nor right atrial strain were independent predictors of the presence of a history of documented arrhythmias, which was associated with age at correction and with the presence of residual defects. In a subanalysis after excluding 23 patients who had had more than one corrective surgery, right ventricular strain was an independent predictor of the presence of previous arrhythmic events (OR 1.19, 95% CI 1.02-1.38, p=0.025). Right atrial strain was also an independent predictor after adjustment (OR 0.93, 95% CI 0.87-0.99, p=0.029). The ideal cut-off for right ventricular strain was -15.3% and for right atrial strain 23.0%.
CONCLUSIONS:
Compared with conventional echocardiographic parameters, strain measures of the right heart are associated with the presence of arrhythmic events, and may be useful for risk stratification of patients with repaired tetralogy of Fallot, although a prospective study is required.info:eu-repo/semantics/publishedVersio
Adherence to Guidelines in the Treatment of Acute Coronary Syndromes: Progress Over Time
Introdução: O tratamento das Síndromes
Coronárias Agudas (SCA) sofreu várias
alterações muito rápidas nos últimos anos,
traduzido nas múltiplas propostas de
recomendações pelo ACC/AHA/ESC, baseados
na evidência clínica. Avaliamos a
implementação destas recomendações,
comparando uma população de doentes de 2002, com uma população de 2005.
Métodos: Estudo retrospectivo de 368 doentes
admitidos em 2002 e 420 doentes admitidos em 2005 por SCA (com e sem elevação do segmento ST). Analisaram-se características clínicas e estratégias de tratamento.
Resultados: Não se verificaram diferenças em
termos de idade, sexo masculino, factores de
risco para doença coronária ou história prévia de revascularização miocárdica. Verificou-se uma redução de doentes com antecedentes de enfarte do miocárdico e insuficiência renal e aumento da apresentação como enfarte com elevação do segmento ST. O tratamento com clopidogrel (6% versus 87%), bloqueador-beta(54% versus 79%), inibidores da enzima de conversão da angiotensina (72% versus 84%) e estatinas (78% versus 91%) aumentou (para todos p<0,001). Por outro lado, verificou-se um
pequeno decréscimo na utilização de ácido
acetilsalicílico (98% versus 95%, p=0,039)
(com maior utilização de clopidogrel) e a
ticlopidina deixou de ser utilizada (46% versus 0%, p<0,001). Os antagonistas dos receptores da glicoproteína IIb/IIIa não se alteraram significativamente (66% versus 67%, p=NS).
Aumentaram as intervenções coronárias
percutâneas (53% versus 67%, p<0,001). Não
se verificou diferença em termos de mortalidade hospitalar (8,2% versus 6,4%) e
aos 30 dias (9,0% versus. 8,6%), com redução
ao 1ºano de seguimento (17,1% versus 11,7%,
p=0,039). As estatinas e os bloqueadores beta
são preditores independentes de mortalidade,
com efeito de protecção.
Conclusões: Entre 2002 e 2005, o tratamento
das SCA melhorou significativamente de acordo com as recomendações existentes,
traduzindo-se numa melhoria da mortalidade
ao 1º ano de seguimento
Is Chronic Nitrate Therapy Associated with a Different Clinical Presentation of Acute Coronary Syndrome?
A terapêutica com nitratos pode induzir pré-condicionamento isquémico, com consequente aumento da tolerância a isquémia. No contexto de síndromes coronárias agudas (SCA), os nitratos podem condicionar uma diferente forma de apresentação, com maior protecção. Objectivos: Estudar numa população de doentes com SCA se a administração crónica prévia ao evento, de nitratos condiciona a forma de apresentação do SCA. Métodos: Estudo de 287 doentes (65 +- 13 anos, 66% sexo masculino) admitidos no nosso serviço por SCA (com e sem elevação do segmento ST) no primeiro semestre de 2005. Destes, 8% estavam sob terapêutica com nitratos prévia à admissão. Neste grupo 27% apresentaram-se como SCA com elevação do segmento ST e no grupo sem nitratos, este valor foi de 58% (p=0,005). Por análise univariada, a utilização de nitratos foi preditora da ocorrência preferencial de "SCA sem elevação do segmento ST" (OR 0,27, IC 95% 0,10-0,71, p=0,005). Após correcção para variáveis potencialmente influentes (idade, sexo, revascularização prévia, tabagismo) por análise multivariada de regressão logística, a terapêutica com nitratos foi preditora limiar da apresentação clínica "SCA sem elevação do segmento ST" (OR 0,37, IC 95% 0,13-1,04), p=0,059. Conclusão: A utilização prévia à ocorrência de SCA associou-se com um desvio da apresentação para a forma de SCA sem elevação do segmento ST. Este achado pode ser justificado pela hipótese de que os nitratos podem induzir um pré-condicionamento farmacológico, reduzindo a extensão transmural do enfarte
Impact of Age on Treatment and Outcomes After Acute Myocardial Infarction, Particularly in Very Elderly Patients
INTRODUCTION: The elderly population admitted for acute myocardial infarction is increasing. This group is not well studied in international trials and is probably treated with a more conservative approach.
OBJECTIVES: To evaluate the presentation and treatment of myocardial infarction according to age, particularly in very elderly patients.
METHODS: We studied 1242 consecutive patients admitted with acute myocardial infarction, assessing in-hospital, 30-day and one-year mortality during follow-up for each age-group. Patients were divided into four groups according to age: <45 years (7.6%); 45-64 years (43.3%); 65-74 years (23.4%); and ≥75 years (25.7%).
RESULTS: Elderly patients had a worse risk profile (except for smoking), more previous history of coronary disease and a worse profile on admission, with the exception of lipid profile, which was more favorable. With regard to treatment of the elderly, although less optimized than in other age-groups, it was significantly better compared to other registries, including for percutaneous coronary angioplasty. Both complications and mortality were worse in the older groups. In elderly patients (≥75 years), adjusted risk of mortality was 4.9-6.3 times higher (p<0.001) than patients in the reference age-group (45-64 years). In these patients, the independent predictors of death were left ventricular function and renal function, use of beta-blockers being a predictor of survival.
CONCLUSIONS: Elderly patients represent a substantial proportion of the population admitted with myocardial infarction, and receive less evidenced-based therapy. Age is an independent predictor of short- and medium-term mortality
Does Admission NT-ProBNP Increase the Prognostic Accuracy of GRACE Risk Score in the Prediction of Short-Term Mortality After Acute Coronary Syndromes?
BACKGROUND:
NT-proBNP has prognostic implications in heart failure. In acute coronary syndromes (ACS) setting, the prognostic significance of NT-proBNP is being sought. We studied short-term prognostic impact of admission NT-proBNP in patients admitted for ACS and in association with GRACE risk score (GRS).
METHODS AND RESULTS:
We studied 1035 patients admitted with ACS. Patients were divided in quartiles according to NT-proBNP levels on admission: Q1 <180 pg/ml; Q2 180-691 pg/ml; Q3 696-2664 pg/ml; Q4 2698-35 000 pg/ml. Groups were compared in terms of short-term all-cause mortality. Patients with higher NT-proBNP had worst GRS on admission. They also received less aggressive treatment. In-hospital mortality was 0.8%, 3.0%, 5.8% and 12.8% (P<0.001) and 30-day mortality 1.6%, 4.6%, 6.5% and 16.7% (P<0.001) respectively. In multivariate logistic regression analysis, NT-proBNP is an independent predictor of in-hospital (OR 2.35; 95% CI: 1.12-4.93, P=0.022) and 30-day mortality (OR 2.20; 95% CI: 1.17-4.12, P=0.014). However, NT-proBNP does not add any incremental benefit to GRS for prediction of outcome by ROC curve analysis.
CONCLUSIONS:
NT-proBNP is an independent predictor of in-hospital and 30-day mortality after ACS, independently of left ventricular function, but does not increase the prognostic accuracy of GRS.info:eu-repo/semantics/publishedVersio
Impact of Obesity on Results after Primary Angioplasty in Patients with ST Segment Elevation Acute Myocardial Infarction
INTRODUCTION: Obesity is an important risk factor for the development of diabetes, hypertension, coronary disease, left ventricular dysfunction, stroke and cardiac arrhythmias. Paradoxically, previous studies in patients undergoing elective coronary angioplasty showed a reduction in hospital and long-term mortality in obese patients. The relation with body mass index (BMI) has been less studied in the context of primary angioplasty.
OBJECTIVES: To evaluate the impact of obesity on the results of ST-segment elevation acute myocardial infarction treated by primary angioplasty.
METHODS: This was a study of 464 consecutive patients with ST-segment elevation acute myocardial infarction undergoing primary angioplasty, 78% male, mean age 61 +/- 13 years. We assessed in-hospital, 30-day and one-year mortality according to BMI. Patients were divided into three groups according to BMI: normal--18-24.9 kg/m2 (n = 171); overweight--25-29.9 kg/m2 (n = 204); and obese-- > 30 kg/m2 (n = 89).
RESULTS: Obese patients were younger (ANOVA, p < 0.001) and more frequently male (p = 0.014), with more hypertension (p = 0.001) and dyslipidemia (p = 0.006). There were no differences in the prevalence of diabetes, previous cardiac history, heart failure on admission, anterior location, multivessel disease, peak total CK or medication prescribed, except that obese patients received more beta-blockers (p = 0.049). In-hospital mortality was 9.9% for patients with normal BMI, 3.4% for overweight patients and 6.7% for obese patients (p = 0.038). Mortality at 30 days was 11 4.4% and 7.8% (p = 0.032) and at one year 12.9%, 4.9% and 9% (p = 0.023), respectively. On univariate analysis, overweight was the only BMI category with a protective effect; however, after multivariate logistic regression analysis, adjusted for confounding variables, none of the BMI categories could independently predict outcome.
CONCLUSIONS: Overweight patients had a better prognosis after primary angioplasty for ST-segment elevation acute myocardial infarction compared with other BMI categories, but this was dependent on other potentially confounding variables
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