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Figure 1 Ventriculographic frames of a single valvuloplasty balloon dilated across the stenotic mitral valve in the right anterior oblique (A) and left anterior oblique (B) projections. (C): schematic representation of the steerable left atrial guiding catheter (GC) in the right anterior oblique (left) and left lateral projection (right). By external manipulations of the steering arm (SA), the catheter’s distal tip is curved so as to point directly at the mitral orifice. The guidewire (GW) is stabilized within the left atrium by the formation of spirals.
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