superior vena cava वाक्य
उदाहरण वाक्य
मोबाइल
- The venous system finally coalesces into two major veins : the superior vena cava ( roughly speaking draining the areas above the heart ) and the inferior vena cava ( roughly speaking from areas below the heart ).
- This involves placing a catheter in the venous system of the heart and measuring pressures and oxygen saturations in the superior vena cava, inferior vena cava, right atrium, right ventricle, and pulmonary artery, and in the wedge position.
- Similar to the Hickman line, the tip of the catheter is in the superior vena cava, and the catheter is tunneled under the skin to an incision on the chest wall, where the distal end of the catheter exits the body.
- Peripherally-inserted central catheters ( PICC, pronounced " pick " ), is a form of vascular access that is inserted at a peripheral site such as the veins of the arms and extends in the central venous system at the superior vena cava.
- It is a catheter that enters the body through the skin ( percutaneously ) at a peripheral site, extends to the superior vena cava ( a central venous trunk ), and stays in place ( dwells within the veins ) for days or weeks.
- The PICC line is inserted through a sheath into a peripheral vein sometimes using the Seldinger technique or modified Seldinger technique, under ultrasound guidance, usually in the arm, and then carefully advanced upward until the catheter is in the superior vena cava or the right atrium.
- Above the hilum of the lung is an arched groove for the azygos vein, and above this is a wide groove for the superior vena cava and right innominate vein; behind this, and close to the top of the lung is a groove for the innominate artery.
- The surgical procedure for implantation was minimally invasive as opposed to the traditional procedure of threading leads into the subclavian venous system, through the superior vena cava and into one or more endocardial areas of the heart, a procedure often requiring a cardiologist with specialized training in electrophysiology.
- The chief disadvantage is that it must be inserted and then travel through a relatively small peripheral vein which can take a less predictable course on the way to the superior vena cava and is therefore somewhat more time consuming and more technically difficult to place in some patients.
- It is formed by the union of the ascending lumbar veins with the right subcostal veins at the level of the 12th thoracic vertebra, ascending in the posterior mediastinum, and arching over the right main bronchus posteriorly at the root of the right lung to join the superior vena cava.
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