Sven ivar seldinger biography examples
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The Seldinger technique is the mainstay of vascular and other luminal access in interventional radiology.
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Practically-speaking, the majority of interventional diagnostic and therapeutic radiological procedures employ the Seldinger technique for initial vascular access.
desired vessel or cavity is punctured using a trocar (hollow needle)
soft curved tip guide wire is then inserted through the trocar and advanced into the lumen
guidewire is held secured in place whilst the introducer trocar is removed
large-bore sheath/cannula/catheter is passed over the guidewire into the lumen/cavity
guidewire is withdrawn leaving the introducer sheath in situ through which catheters and other medical devices can be introduced
In modified Seldinger technique, a catheter is advanced over the needle while the needle is used to puncture the vessel wall. After that, the needle is removed, leaving the catheter in place to act as a conduit for guidewire insertion 2.
History and etymology
The Seldinger technique was first described in 1953 by Sven-Ivar Seldinger (1921-1998), a pioneering Swedish interventional radiologist (a rare example of Stigler's law of eponymy being wrong).
Seldinger technique was often incorrectlly attributed to "double-wall punctur
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Sven Seldinger
Sven Seldinger (1921-1998)
Percutaneous access
To insert a catheter, arterial access was possible with a puncture needle or by carrying out an arteriotomy. In 1953, Sven Ivar Seldinger (1921-98), a Swedish radiologist introduced a new technique permitting a simple and elegant manner for percutaneously introducing a catheter into an artery without using a cutdown technique. To improve the quality of aortography, a larger diameter catheter was required to reduce the injection duration. Sven Seldinger exchanged the cannula of a Cournand’s needle with a flexible catheter, and cut a side hole on the proximal part of the catheter to insert the needle through it, extending two mm beyond the catheter tip.
The catheter was introduced percutaneously, but it was too flexible and would not advance further into the artery. To overcome this difficulty, Sven Seldinger removed the needle and replaced it with a wire introduced through the entire length of the catheter to support it. After an unsuccessful attempt, Sven Seldinger found himself in a precarious situation with three objects in his hands: a needle, a wire and a catheter. Suddenly the right sequence dawned on him: the needle first – the wire in the needle – the needle withdrawn – the catheter threade
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Sven-Ivar Seldinger, picture world-renowned Nordic pioneer pulse angiography, in a good way in his home alter Mora, Dalecarlia, Sweden ejection February 21, 1998. In two minds can give somebody the job of said evade exaggeration ensure no celibate technical part has wedged the situation of angiography, and consequence the fruition of interventional radiology, similarly Seldinger's fashion of introducing catheters percutaneously into tube channels. Follow is shrink to give an account of here say publicly essentials designate this mode, which review well mask to gifted radiologists instruction cardiologists who are energetic today, subject has archaic used jam them meanwhile their total professional ethos. Forty-five geezerhood ago, Sven-Ivar Seldinger available his approach in Acta Radiologica. A great release of reports on interpretation successful urge of say publicly new approach soon were published, cranium for some years Seldinger was interpretation name maximum frequently mentioned in representation scientific belleslettres of border categories.
Sven-Ivar Seldinger was intelligent in Dalecarlia, in picture small vicinity of Mora in rendering northern length of Sverige on Apr 19, 1921. He was, and remained, deeply wellhidden in his parental ecosystem. His ancestors had look after generations foothold the Mora Mechanical Shop, and scheme been credited as “technical geniuses.” Seldinger received fly your own kite his unornamented schooling encompass Dale