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The heart is a muscular organ situated in the mediastinum.It consists of four chambers, four valves, two main arteries (the coronary arteries), and the conduction system. The left and right sides of the heart have different functions: the right side receives de-oxygenated blood through the superior and inferior venae cavae and pumps blood to the lungs through the pulmonary artery, and the left ...
After harvesting, the pericardium—the sac that surrounds the heart—is opened and stay sutures are placed to keep it open. Purse string sutures are placed in the aorta to prepare the insertions of the cannula into the aorta, and a catheter which temporarily arrests the heart using a solution high in potassium. Another purse string is placed ...
Commonly used in cardiothoracic surgery when the heart is being operated on for such surgeries like open valve replacement or CABG on the posterior side of the heart. The bypass machine is responsible for oxygenation of blood, removal of carbon dioxide, heating the blood (heat is lost from being outside the body) to maintain core body ...
The heart is a muscular organ found in humans and other animals. This organ pumps blood through the blood vessels. [1] Heart and blood vessels together make the circulatory system. [2] The pumped blood carries oxygen and nutrients to the tissue, while carrying metabolic waste such as carbon dioxide to the lungs. [3]
The chest drain stitch and corner stitch are variations of the horizontal mattress. [citation needed] Other stitches or suturing techniques include: Purse-string suture, a continuous, circular inverting suture which is made to secure apposition of the edges of a surgical or traumatic wound. [13] [14] Figure-of-eight stitch; Subcuticular stitch ...
To accomplish this, the chest had to be surgically opened and the defibrillator paddles placed directly on the heart. [ 54 ] Beck's groundbreaking work was eclipsed in 1955, with the development by Paul Zoll (1911 – 1999) of the external defibrillator — a device that could externally defibrillate the heart through the closed chest.
The heart's cardiac skeleton comprises four dense connective tissue rings that encircle the mitral and tricuspid atrioventricular (AV) canals and extend to the origins of the pulmonary trunk and aorta. This provides crucial support and structure to the heart while also serving to electrically isolate the atria from the ventricles. [1]
On chest X–ray, the heart looks posteriorly rotated. Another feature is the sharp delineation of pulmonary artery and transverse aorta due to lung deposition between these two structures. If there is partial absence of pericardium, there will be bulge of the left atrial appendage. On CT and MRI scans, similar findings as chest X–ray can be ...