Definition: Pericardioscopy is a medical procedure that involves inserting a small tube into the space between two parts of the heart, called the pericardium and the myocardium. The purpose of this procedure is to examine the inside of the heart, including the walls of the chambers, the valves, and the blood vessels within them. During a pericardioscopy procedure, an experienced doctor inserts a thin tube into the space between the two parts of the heart that are connected by the per
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