Multiscale studies of delayed afterdepolarizations II: Calcium-overload-induced ventricular arrhythmias [PDF]
Disturbances in calcium homeostasis in a cardiac myocyte can lead to calcium-overload conditions and abnormal calcium releases, which occur primarily in the following two phases of the action potential (AP): (a) triggered or late calcium release (LCR) during the plateau phase; (b) spontaneous calcium release (SCR) during the diastolic interval (DI ...
arxiv
Resumo: Introdução: O espectro da cardiopatia hipertensiva é diverso podendo ir até à disfunção ventricular esquerda. O desenvolvimento de metodologias ecocardiográficas que permitam melhorar o estadiamento da cardiopatia hipertensiva e identificar ...
Susana Gonçalves+6 more
doaj
Multiscale studies of delayed afterdepolarizations I: A comparison of two biophysically realistic mathematical models for human ventricular myocytes [PDF]
Focal arrhythmias, which arise from delayed afterdepolarizations (DADs), are observed in various pathophysiological heart conditions; these can lead to sudden cardiac death. A clear understanding of the electrophysiological factors of cardiac myocytes, which lead to DADs, can suggest pharmacological targets that can eliminate DAD-induced arrhythmias ...
arxiv
Sítios endocárdicos alternativos na estimulação cardíaca artificial
A estimulação ventricular direita convencional pode estar associada a efeitos deletérios sobre a função cardíaca. A necessidade de uma estimulação cardíaca artificial mais fisiológica é, indiscutivelmente, um dos pontos mais importantes na área da ...
Otaviano da Silva Júnior+3 more
doaj +1 more source
A Novel Mathematical/Numerical Formula for Assessing Right Ventricular Torsion Using Echocardiographic Imaging [PDF]
Recently, the ventricular torsional parameters have received special attention because of their significant role in the ventricular systolic and diastolic function. Right ventricular (RV) rotational deformation is a sensitive index for RV performance but difficult to measure.
arxiv
Análise em longo prazo da função ventricular esquerda de pacientes submetidos à revascularização cirúrgica do miocárdio com e sem circulação extracorpórea [PDF]
Rafael Rocha Mól Silva
openalex +1 more source
Hypertrophic cardiomyopathy in a domestic cat (Felis catus) associated with acute myocardial infarction [PDF]
A cardiomiopatia hipertrófica (CMH) é a desordem cardíaca mais comum em gatos, caracterizada por disfunção diastólica e insuficiência cardíaca congestiva.
Alvarenga, Gisele Junqueira Ribeiro de+4 more
core
Ventricular torsional relation to ventricular fiber arrangement [PDF]
Left ventricular torsion from helically oriented myofibers is a key parameter of cardiac performance. Physicians observing heart motion on echocardiograms, during cardiac catheterization, or in the operating room, are impressed by the twisting or rotary motion of the left ventricle during systole.
arxiv
The role of Impella in high-risk percutaneous coronary intervention
Percutaneous coronary intervention (PCI) has been increasingly performed in patients with severely depressed left ventricular function and complex coronary lesions, including multivessel disease.Mechanical ventricular assist devices play an increasingly ...
Sara Moura-Ferreira+5 more
doaj
Introdução: A cardiopatia chagásica crônica (CCC) engloba complexo espectro de apresentações, não sendo incomuns episódios de morte arrítmica em portadores de função ventricular esquerda preservada (FVEP) ou quase normal (FVEQN).
Frederico Homem da Silva+4 more
doaj +4 more sources