Articles & courses

ArticlesShow all 74
Standard Transthoracic Echocardiogram: Complete Imaging Protocol

…size, measured as its inner diameter, is strongly related to heart failure, ventricular tachyarrhythmias, and overall mortality. Ventricular dimensions are measured using an electronic caliper…

Cardiac amyloidosis

…worldwide [15]. Clinical Presentation and Course Both AL and ATTR CA typically present as heart failure with preserved ejection fraction (HFpEF), and a multitude of…

A new ECG biomarker for sudden cardiac death

…resistant to resolution. Known predictors of cardiac arrest The only risk biomarker in genuinely widespread use is left ventricular ejection fraction (LVEF), measured by echocardiography…

Left Ventricular Function

…is also fundamental to global cardiac function. Diastolic dysfunction results in a special type of heart failure, referred to as heart failure with preserved ejection…

Ventricular Tachycardia

…setting of ischemic heart disease or reduced left ventricular ejection fraction (LVEF). Sustained VT: Defined as VT lasting longer than 30 seconds or requiring termination…

Physics of myocardial perfusion imaging (SPECT, PET): Radiotracers, perfusion, blood flow and viability

…PET offers higher spatiotemporal quality, as compared with SPECT. Quantification of blood flow using PET Quantitative PET perfusion imaging offers precise measurements of myocardial blood…

Components and construction of a pacemaker

…These electrons depolarize the myocardium and thus trigger an action potential that will spread through the myocardium. The electrodes are also used to record electrical…

Ejection fraction (EF): Physiology, Measurement & Clinical Evaluation

…volume Ejection fraction is also affected by left ventricular volume (size). For example, athletes have large ventricular dimensions and often lower ejection fraction, as compared…

Heart Failure With Preserved Ejection Fraction: Diagnosis and Treatment

…reduced ejection fraction (HFmrEF) is defined by symptoms and/or signs of HF with LVEF 41–49%. In this group, structural abnormalities such as left…

Heart Failure with Preserved Ejection Fraction (HFpEF)

…invasively as a pulmonary capillary wedge pressure (PCWP) ≥15 mmHg at rest or ≥25 mmHg during exercise [4] . This hemodynamic criterion underscores that "preserved" ejection…

Media

No matches.

Tests

Tools