25 träffar

ArticleCardiology
Ventricular Tachycardia

…asymptomatic, NSVT serves as a critical marker of arrhythmogenic risk, particularly in the setting of ischemic heart disease or reduced left ventricular ejection fraction (LVEF)…

ArticleECG
Components and construction of a pacemaker

…Unipolar vs. bipolar pacing Pacemakers can utilize either a unipolar or bipolar mode of pacing (Figure 3). In bipolar pacing, the voltage difference is established…

ArticleProcedurer
Foreign body in the ear and nose

…Urgency : : Button battery Immediately — leakage of fluid causes a chemical burn Two or more magnets (including in different nostrils) Immediately — pressure necrosis across the septum…

ArticleCardiology
Heart failure: Introduction

…particularly in light of the improvements in the management of hypertension (coronary heart disease and hypertension are traditionally viewed as the main drivers of heart…

ArticleArrhythmias and arrhythmology
Atrial Fibrillation in the Critically Ill Patient

…bidirectional. AF with a rapid ventricular response may precipitate or aggravate haemodynamic decompensation, whereas acute illness and increased sympathetic drive may promote AF. In DHF…

ArticleMyocardial ischemia and infarction
In-Stent Restenosis: Mechanisms and Treatment

…in stent disease is driven predominantly by tissue accumulation within the stented segment rather than by negative remodelling. Pathophysiology Neointimal hyperplasia The principal mechanism of…

ArticleCardiology
Heart Failure with Reduced Ejection Fraction (HFrEF)

…diffuse microvascular dysfunction, or flow limiting epicardial stenoses), is the predominant cause, accounting for approximately 60% of HFrEF cases in Western populations [14] . Non ischemic…