A new technique for retrograde crossing of stenotic aortic valves using the pigtail catheter and a straight guidewire is described.
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References
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Baim DS, Grossman W.: Percutaneous approach and transeptal catheterization. In: Cardiac Catheterization and Angiography, ed. by Grossman W.Philadelphia: Lea and Febiger, 1986, pp 68-70.
