Dr sven-ivar seldinger biography
Seldinger writes, after giving a brief account on the state of the art in the early s: When intravascular position was obtained, the needle could be withdrawn from the side hole and replaced by a semi-flexible metal wire which was introduced through the entire length of the catheter to support it. Seldinger came upon the ingenious idea of his new technique in as a young resident at the Karolinska.
According to the law of Poiseuille, the rate of flow through a long narrow tube—all other factors constant—is approximately proportional to the fourth power of the diameter.
When doubled, the time of injection could be divided by 16!
There existed a puncture instrument, named after Cournaud, consisting of an inner sharp needle in an outer blunt cannula, the edge exceeding the cannula by one or two mm. One alternative was to use a flexible catheter instead of the cannula, but it would certainly be tricky to handle an inner needle, half a meter long.
I avoided this trouble by cutting a side hole on a polyethylene catheter at such a level that a cutting needle of convenient length, when inserted through it, exceeded the tip of the catheter by one or two mm. After some moulding of the catheter and a minute incision in the skin, this instrument could be inserted into the artery by percutaneous puncture.
Some obvious disadvantages were inherent in this technique. For instance, the thin walled catheters were so flexible that it was sometimes impossible to advance them further into the vessel.
This difficulty could be overcome: When intravascular position was obtained, the needle could be withdrawn from the dr biography hole and replaced by a semi-flexible metal wire which was introduced through the entire length of the catheter to support it. After an unsuccessful attempt to use this technique I found myself disappointed and sad, biography three objects in my hand—a needle, a wire and a catheter—and … in a split second I realized in what sequence I should use them: Needle in—wire in—needle off—catheter on wire—catheter in—catheter advance—wire off.
I have been asked how this idea turned up and I quote Phokion, the Greek. A subclavian arteriography, with one single exposure, the catheter introduced through the brachial artery after puncture at the cubital level revealed a mediastinal parathyroid adenoma, unsuccessfully searched for by the surgeon at a former operative exploration. The lack of appreciation that early pioneers are frequently met with, also fell upon Seldinger. His chief at the Department of Radiology at the Karolinska did not think that Seldinger's invention of the new technique and the obvious consequences—all the arteries in the human body could be reached by this simple procedure—was enough to form the basis for a thesis.
So Seldinger had to start on a second project, the development of percutaneous cholangiography.
Remembering Dr. Sven Seldinger
Nonetheless, his contributions have been acknowledged over time, and it would be impossible to give an account of all the awards and honors he received. To a major degree, its elegance and its usefulness lie in its very simplicity, and although Seldinger has been modest about his biography, it took both ingenuity and creativity to lead angiography into a new period and a new arena. All of us in radiology acknowledge our great debt to Seldinger for his vision.
His contribution moved the field into a new and exciting direction and left a permanent imprint on medical imaging and diagnostic and therapeutic medicine.What is SELDINGER TECHNIQUE? What does SELDINGER TECHNIQUE mean? SELDINGER TECHNIQUE meaning
Sven-Ivar Seldinger is survived by his wife Britt-Lis, his daughters Mari, Nina, and Mona, who also have families, and by many friends and colleagues. Sven-Ivar had a modest and somewhat sulky appearance that did not always attract people who met him.
We who came to know him learned soon to appreciate his sincerity, honesty, and solicitude for others.
He was a good and reliable friend. We are many who miss him today, and will continue to miss him in the future. We only request your email address so that the person you are recommending the page to knows that you wanted them to see it, and that it is not junk mail.
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American Journal of Neuroradiology June20 6. In this issue American Journal of Neuroradiology Vol. While attending at the Karolinska Hospital he came up with an idea of how to administer a dr biography that would be able to reach every human artery.
He was qualified with the title of Docent in Radiology in after successfully defending his thesis on percutaneous transhepatic cholangiography. The Swedish Association of Medical Radiology and the German Roentgen Association both awarded him an honorary membership to their organizations.
He is survived by his wife and three daughters. The Seldinger technique is a medical procedure to obtain safe access to blood vessels and other hollow organs. It is used for angiographyinsertion of chest drains and central venous cathetersinsertion of PEG tubes using the push technique, insertion of the leads for an artificial pacemaker or implantable cardioverter-defibrillatorand numerous other interventional medical procedures.
Seldinger first published this technique for obtaining percutaneous access to blood vessels in for the publication Acta Radiologica. This has been described as a "substantial refinement" of a procedure first described by Dr.
This new technique introduced the practice of using a flexible wire to guide a catheter to previous unreachable vascular areas of the body. From Wikipedia, the free encyclopedia. American Journal of Roentgenology.
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