Articles & courses

Articles
Cardiac tumors

…Tumors can be localized in the myocardium, pericardium, perivalvular (adjacent to the valves), etc. Cardiac tumors cause nonspecific symptoms that depend on the size of…

Soft tissue corticosteroid injection

…fascia 10–20 mg 20–40 mg 1–2 mL The doses follow the summaries of product characteristics: Lederspan specifies 10–20 mg periarticularly in…

Coronary Anatomy and Segmental Classification for the Clinician

…effect of the lesion. The apparent percentage stenosis is calculated relative to an adjacent reference segment presumed to be relatively normal. This assumption may be…

Strain, strain rate and speckle tracking: Myocardial deformation

…ventricle to contract in a highly sophisticated and effective way (Figure 1). Myocardial fibers adjacent to the endocardium are longitudinally oriented (from base to apex…

Epistaxis — compression, cautery and anterior nasal packing

…forwards , not backwards. Procedure Step 1 — compression Have the patient blow out the clot. The pinch is applied to the lower third of the nose…

Left Ventricular Thrombus After Myocardial Infarction

…Protrusion into the LV cavity. Visualization on multiple imaging planes. Location adjacent to hyperkinetic myocardium. Large thrombus burden. Cardiac magnetic resonance (CMR) can further characterize…

Cardiac electrophysiology and ECG interpretation

…are termed intercalated discs . The intercalated disc is composed of cell membrane proteins that connect adjacent cells mechanically and electrically. The electrical connection is established…

Cardiac electrophysiology: Action potential, automaticity and vectors

…electrically interconnected by gap junctions (Figure 1) . Gap junctions are protein channels that connect the cell membranes of adjacent cells and enable the flow of…

Hemodynamic principles and calculations

…constant (1540 m/s), and cos ϴ can be ignored unless there is significant angle error (cos 0° = 1), making this formula easier to…

Myocardial Mechanics: Structure and Function of Myocardial Fibers

…be subdivided into several layers. These layers are similar to those seen in arteries throughout the circulatory system (Figure 1). The ventricular wall consists of…

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