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1.
Rev. Soc. Bras. Clín. Méd ; 9(3)maio-jun. 2011.
Article in Portuguese | LILACS | ID: lil-588523

ABSTRACT

JUSTIFICATIVA E OBJETIVOS: A cardiomiopatia dilatada(CMD) é a mais comum das cardiomiopatias, compreendendo mais de 90% de todos os casos. O seu diagnóstico é feito, sobretudo,com a utilização da ecocardiografia, a qual apresenta algumas limitações quanto à identificação da etiologia. A ressonância magnética cardíaca (RMC) tem se destacado como exame coadjuvante, permitindo melhor caracterização morfofuncional e tecidual do músculo cardíaco. O objetivo deste estudo foi descrevero papel da RMC no diagnóstico e avaliação das diversas causas de CMD.CONTEÚDO: A RMC apresentou bons resultados na aplicaçã oclínica em diversas causas de CMD, não possuindo capacidade de diferenciar todos os seus tipos, porém, contribuindo para a presunção diagnóstica.CONCLUSÃO: Com o avanço tecnológico da RMC, múltiplas indicações clínicas têm surgido em algumas ocasiões, com um aspecto complementar a determinados exames, em outras, como solução de dilemas diagnósticos. Tudo isso com acurácia superior aos demais métodos de imagem, poucas contraindicações e mínimos riscos de efeitos adversos.(AU)


BACKGROUND AND OBJECTIVES: Dilated cardiomyopathy (DCM) is the most common cause of cardiomyopathies,including more than 90% of all cases. Its diagnostic is done using, especially, echocardiography; which presents some limitations regarding the etiology's identification. Cardiac magnetic resonance (CMR) has been very useful as a more precise study, allowing better characterization of myocardium tissue and morphology. The objective of this article was to describe the role of the CMR in the diagnosis and evaluation of the diverse causes of DCM.CONTENTS : The CMR presented good results in the clinical applicationin diverse causes of DCM, not having capacity to differentiate all their types; however, better contributing to the diagnostic and patients follow up.CONCLUSION: With the technological development of CMR, several clinical indications have been created, in a few occasions with a complementing aspect to certain exams, in others with solutions of diagnostic dilemmas. All with higher accuracy in comparison to others image modalities, few contraindications and minimum adverse risks effects.(AU)


Subject(s)
Humans , Magnetic Resonance Spectroscopy/instrumentation , Cardiomyopathy, Dilated/diagnostic imaging , Cardiomegaly/etiology , Thiamine Deficiency/blood , Chagas Disease/diagnostic imaging , Arrhythmogenic Right Ventricular Dysplasia/diagnostic imaging , Isolated Noncompaction of the Ventricular Myocardium/diagnostic imaging , Myocarditis/diagnostic imaging
2.
Rio de Janeiro; s.n; 2008. 90 p. graf.
Thesis in Portuguese | LILACS | ID: lil-574052

ABSTRACT

Fundamento - A importância de micronutrientes como tiamina há muito é conhecida, visto que sua deficiência associa-se com insuficiência cardíaca (IC) de alto débito. Vários trabalhos mostram a influência dos diuréticos nos níveis de tiamina. Objetivos - Avaliar se o uso de furosemida isolada ou associada a espironolactona (espiro) determina níveis de tiamina diferentes em pacientes (pc) com IC. Verificar se a tiamina é influenciada por fatores nutricionais, comorbidades e outros fármacos. Métodos - Estudo em duas etapas: Estudo 1 - análise transversal (uso prévio de furosemida isoladamente ou em associação com espiro) de 22 pc com IC (classes III/IV da NYHA) divididos em: grupo I - com epiro (n=11) e grupo II - sem espiro (n=11); Estudo 2 - ensaio clínico randomizado, aberto, com três grupos paralelos de 53 pc com IC divididos em grupo "sem diuréticos" (n=15), "com diurético" (n=15) (uso de furosemida até o dia 90 e depois associar espiro até o dia 180) e "com espiro" (n=23) (usar furosemida e espiro desde a visita inicial até o dia 180). Os pc realizaram três visitas: inicial, em 90 dias e 180 dias, sendo coletadas amostras de sangue para tiamina e outros exames, assim como análise clínica. Determinamos os níveis de tiamina por recombinação de apoenzima e por cromatografia líquida de alta performance. Utilizamos testes t de Student, qui-quadrado, Mann-Whitney, Kruskal-Wallis, Spearman e como a variância foi cerca de três vezes maior que a estimada, usamos a simulação robusta de Monte Carlo. Resultados: no estudo 1, os grupos I e II eram similares em relação à ingesta alimentar, doses diárias de furosemida (I=110,9 +- 30,2 vs II=105,5 +-26,9mg; p>0,05) e dados demográficos. Os pacientes do grupo I mostraram níveis maiores de tiamina (277,2+-89,8), comparados aos do grupo II (154,7+-35,7) (p<0,001). Nenhuma outra variável esteve associada com a tiamina. No estudo 2, os grupos também eram semelhantes quanto às características clínicas e laboratoriais...


Background: The importance of micronutrients such as thiamine known since its deficiency is associated with the development of high-output heart failure (HF). Several studies show the influence of diuretic therapy in thiamine blood levels. Objectives: assess whether the use of furosemide alone or in combination with spironolactone (spiro) can determine different thiamine blood levels in patients (pt) with HF. To determinat whether thiamine blood levels were influenced by nutritional factors, comorbidities and other drugs. Methods: Study 1 - cross-sectional analysis (previous use of furosemide alone or with spiro) of 22 HF pt (NYha class III/IV) divided in two groups: I - with spiro (n=11) and II - without spiro (n=11); Study 2 - randomized, open-label, with three parallel groups of 53 HF pt divided into group "without diuretics" (n=15), "with diuretic" (n=15) (use of furosemide until day 90 and then adding spiro from day 90 until day 180) and "with spiro" (n=23) (using furosemide and spiro through all study). Patients were scheduled to three visits: day 0, day 90 and day 180, and blood samples were collected for thiamine and other tests, as well as clinical analysis. Thiamine levels were determined using an apoenzyme recombination method and high-performance liquid chromatography. The tests used were t-Student, chi-square, Mann-Whitney, Kruskal-Wallis, Spearman correlation, and as the variance was about three times higher than estimated, we used a robust Monte Carlo simulation. Results: in study 1, group I and II were similar regarding food intake, daily furosemide doses (I=110.9+-30.2 vs II=105.5+-26.9 mg; p>0.05) and demographics. Pts in group I (277.2+-89.8) showed significantly higher thiamine levels when compared to pts in group II (154.7+-35.7) (p<0.001). No other variables were associated with thiamine. In study 2, the groups were also similar regarding clinical and laboratory assessments. We found no statistical differences in thiamin blood levels...


Subject(s)
Humans , Thiamine Deficiency/complications , Thiamine Deficiency/blood , Diuretics/therapeutic use , Furosemide/administration & dosage , Furosemide/therapeutic use , Heart Failure/drug therapy , Heart Failure/blood , Nutritional Status , Thiamine/blood , Spironolactone/administration & dosage , Spironolactone/therapeutic use
3.
Southeast Asian J Trop Med Public Health ; 2007 Nov; 38(6): 1120-5
Article in English | IMSEAR | ID: sea-30870

ABSTRACT

This study is a preliminary determination of thiamine status in children with diarrhea and metabolic acidosis admitted to hospital. Children with diarrhea (N = 14; age 2 m-6 yr) were divided into 2 groups according to anion gap type; group 1 (21.4%) with a normal anion gap (5.5 +/- 5.2 mmol/l) and group 2 (78.6%) with a wide anion gap (21.2 +/- 5.2 mmol/l). Blood was taken on the day of admission to determine thiamine and lactate levels. Sixty-six point seven percent of patients in group 1 had a normal lactate level (1.5 +/- 0.8 mmol/l) and 33.3% had a high lactate level (2.2 mmol/l); none had thiamine deficiency (TPPE < 20%). High lactate (3.5 +/- 1.4 mmol/l) was found in 54.5% of group 2 and thiamine deficiency was observed in 18.2% of this group. In conclusion, no thiamine deficiency was noted in patients with normal anion gap, but thiamine deficiency was not uncommon in patients with a wide anion gap, regardless of lactic acidosis.


Subject(s)
Acidosis, Lactic/etiology , Acute Disease , Case-Control Studies , Child , Child, Preschool , Diarrhea/blood , Female , Humans , Infant , Lactic Acid/analysis , Male , Thailand , Thiamine Deficiency/blood
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