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1.
Arq. bras. cardiol ; 111(5): 699-707, Nov. 2018. tab, graf
Article in English | LILACS | ID: biblio-973784

ABSTRACT

Abstract Background: Heart failure with preserved ejection fraction (HFpEF) is a multifactorial syndrome characterized by a limited exercising capacity. High-intensity interval training (HIIT) is an emerging strategy for exercise rehabilitation in different settings. In patients with HFpEF, HIIT subacute effects on endothelial function and blood pressure are still unknown. Objective: To evaluate the subacute effect of one HIIT session on endothelial function and blood pressure in patients with HFpEF. Methods: Sixteen patients with HFpEF underwent a 36-minute session of HIIT on a treadmill, alternating four minutes of high-intensity intervals with three minutes of active recovery. Brachial artery diameter, flow-mediated dilation, and blood pressure were assessed immediately before and 30 minutes after the HIIT session. In all analyses, p <0.05 was considered statistically significant. Results: There was an increase in brachial artery diameter (pre-exercise: 3.96 ± 0.57 mm; post-exercise: 4.33 ± 0.69 mm; p < 0.01) and a decrease in systolic blood pressure (pre-exercise: 138 ± 21 mmHg; post-exercise: 125 ± 20 mmHg; p < 0.01). Flow-mediated dilation (pre-exercise: 5.91 ± 5.20%; post-exercise: 3.55 ± 6.59%; p = 0.162) and diastolic blood pressure (pre-exercise: 81 ± 11 mmHg; post-exercise: 77 ± 8 mmHg; p = 1.000) did not change significantly. There were no adverse events throughout the experiment. Conclusions: One single HIIT session promoted an increase in brachial artery diameter and reduction in systolic blood pressure, but it did not change flow-mediated dilation and diastolic blood pressure.


Resumo Fundamento: Insuficiência cardíaca com fração de ejeção preservada (ICFEP) é uma síndrome multifatorial caracterizada por limitação ao exercício. O treinamento intervalado de alta intensidade (HIIT) é uma estratégia emergente para a reabilitação do exercício em diferentes contextos. Em pacientes com ICFEP, os efeitos subagudos do HIIT sobre a função endotelial e a pressão arterial ainda são desconhecidos. Objetivo: Avaliar o efeito subagudo de uma única sessão do HIIT sobre a função endotelial e a pressão arterial em pacientes com ICFEP. Métodos: Dezesseis pacientes com ICFEP foram submetidos a uma sessão de 36 minutos de HIIT em esteira rolante, alternando quatro minutos de intervalos de alta intensidade com três minutos de recuperação ativa. O diâmetro da artéria braquial, a dilatação mediada pelo fluxo e a pressão arterial foram avaliados imediatamente antes e 30 minutos após a sessão de HIIT. Em todas as análises, p <0,05 foi considerado estatisticamente significativo. Resultados: Houve aumento do diâmetro da artéria braquial (pré-exercício: 3,96 ± 0,57 mm; pós-exercício: 4,33 ± 0,69 mm; p < 0,01), e diminuição da pressão arterial sistólica (pré-exercício: 138 ± 21 mmHg; pós-exercício: 125 ± 20 mmHg; p < 0,01). A dilatação mediada por fluxo (pré-exercício: 5,91 ± 5,20%; pós-exercício: 3,55 ± 6,59%; p = 0,162) e pressão arterial diastólica (pré-exercício: 81 ± 11 mmHg; pós-exercício: 77 ± 8 mmHg; p = 1,000) não se alteraram significativamente. Não houve eventos adversos durante o experimento. Conclusões: Uma única sessão do HIIT promoveu aumento do diâmetro da artéria braquial e redução da pressão arterial sistólica, mas não alterou a dilatação mediada pelo fluxo e a pressão arterial diastólica.


Subject(s)
Humans , Male , Female , Middle Aged , Aged , Vasodilation/physiology , Blood Pressure/physiology , Endothelium, Vascular/physiology , High-Intensity Interval Training/methods , Heart Failure/physiopathology , Oxygen Consumption/physiology , Stroke Volume/physiology , Brachial Artery/physiology , Brachial Artery/diagnostic imaging , Endothelium, Vascular/diagnostic imaging , Echocardiography , Ultrasonography , Exercise Test/methods , Non-Randomized Controlled Trials as Topic , Heart Failure/diagnostic imaging
2.
Rev. bras. cardiol. invasiva ; 22(4): 390-393, Oct-Dec/2015. graf
Article in Portuguese | LILACS | ID: lil-744568

ABSTRACT

O infarto agudo do miocárdio em pacientes com anemia falciforme é, muitas vezes, subdiagnosticado em virtude de fatores de confusão (por exemplo, doença vaso-oclusiva, levando a crises dolorosas). Na maioria dos casos relatados na literatura, as artérias coronárias estavam pérvias e sem lesões. Neste relato de caso, descrevemos a presença de trombo coronariano extenso em paciente com anemia falciforme, apresentando-se sob a forma de infarto agudo do miocárdio com supradesnivelamento do segmento ST, manejado satisfatoriamente com a associação de anticoagulantes e antiplaquetários.


Myocardial infarction in patients with sickle cell anemia is often underdiagnosed due to confounding factors (e.g., vasoocclusive disease leading to painful crisis). In the majority of reported cases, the coronary arteries were pervious and without stenotic lesions. In this case report, we describe the presence of an extensive coronary thrombus in a patient with sickle cell anemia presenting with ST elevation myocardial infarction, managed satisfactorily with the association of anticoagulants and antiplatelet drugs.


Subject(s)
Humans , Male , Middle Aged , Anemia, Sickle Cell/therapy , Myocardial Infarction/therapy , Coronary Thrombosis/therapy , Angiography/methods , Anticoagulants/therapeutic use , Cardiac Catheterization , Electrocardiography/methods
3.
Rev. bras. cardiol. invasiva ; 22(3): 240-244, Jul-Sep/2014. tab, graf
Article in Portuguese | LILACS | ID: lil-732791

ABSTRACT

Introdução: As plaquetas desempenham papel fundamental na fisiopatologia do infarto agudo do miocárdio. Existem evidências de que plaquetas de maior volume apresentem potencial pró- -trombótico aumentado. O objetivo deste estudo foi avaliar se o volume plaquetário médio pode predizer o fluxo coronariano do vaso tratado e os desfechos cardiovasculares adversos em pacientes com infarto do miocárdio com supradesnivelamento do segmento ST submetidos à intervenção coronária percutânea primária. Métodos: Desfecho primário foi considerado como a ocorrência de eventos cardiovasculares adversos (morte, acidente vascular cerebral, infarto agudo do miocárdio, trombose de stent, angina e insuficiência cardíaca classes 3 ou 4) em 30 dias. Desfecho secundário foi avaliado por meio da análise angiográfica do fluxo TIMI pós-procedimento. Resultados: Dos 215 pacientes incluídos no registro de intervenção coronária percutânea primária, 168 (78,6%) tiveram volume plaquetário médio calculado antes do procedimento e foram analisados no presente estudo. Valores do volume plaquetário médio foram estratificados em tercis, sendo considerado um valor elevado > 11 fentolitros (fl). Volume plaquetário médio > 11 fl foi preditor independente de eventos cardiovasculares em 30 dias (p = 0,02). Observou-se que pacientes com fluxo final TIMI zero ou 1 demonstraram ...


Background: Platelets play a key role in the pathophysiology of acute myocardial infarction. There is evidence that higher platelet volumes may have increased prothrombotic potential. The aim of this study was to evaluate whether mean platelet volume can predict culprit coronary vessel flow and adverse cardiovascular outcomes in patients with ST-segment elevation myocardial infarction undergoing primary percutaneous coronary intervention. Methods: Primary endpoint was the composite of adverse cardiovascular events (death, stroke, myocardial infarction, stent thrombosis, class-III or IV angina and heart failure) at 30 days. The secondary endpoint was evaluated by the angiographic TIMI flow grade after the procedure. Results: Of the 215 patients included in the primary percutaneous coronary intervention registry, 168 (78.6%) had their mean platelet volume calculated before the procedure and were analyzed in the present study. Mean platelet volume values were stratified in tertiles, and a high value was considered as > 11 femtoliters (fL). Mean platelet volume > 11 fL was an independent predictor of cardiovascular events at 30 days (p = 0.02). It was observed that patients with final TIMI flow grade zero or 1 showed a trend towards higher mean platelet volume compared with those with final TIMI flow 2 or 3 (11.3 ± 0.9 fL vs. 10.5 ± 1.3 fL; p = 0.06). Conclusions: Baseline mean platelet volume is a simple, useful, and easy to measure marker to predict ...

4.
Clin. biomed. res ; 34(4): 406-409, 2014. ilus
Article in English | LILACS | ID: biblio-834475

ABSTRACT

Erdheim-Chester disease (ECD) is a rare non-Langerhans cell histiocytosis of unknown etiology characterized by proliferation of lipid-containing foamy histiocytes affecting bones and potentially every organ. There is a wide clinical spectrum of the disease, ranging from asymptomatic bone or soft-tissue lesions to life-threatening systemic involvement. Although the initial descriptions published by Jakob Erdheim and William Chester in 1930 included a patient with right atrial infiltration on autopsy, cardiovascular involvement in ECD has only gained more recognition recently. In the present report, we describe a case with cardiac involvement, presenting with symptomatic heart failure and a cardiac mass assessed with echocardiogram and cardiac magnetic resonance imaging.


Subject(s)
Humans , Female , Middle Aged , Erdheim-Chester Disease/complications , Erdheim-Chester Disease/diagnosis , Echocardiography , Heart Failure/diagnosis , Heart Failure/etiology , Musculoskeletal Pain
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