4. Major advances
The major advances in
interventional cardiology
continue as new technology is
developed,tested,and brought
to the clinical arena.These
advances have led to the
significant increase in
procedural volume so that
currently,the number of PCI
exceeds the number of CABGs.
5. THE TECHNIQUE OF BALLOON
DILATATION
A guide wire is passed across the
stenosis
This is followed by deflated balloon
The balloon catheter is inflated within
the lesion
The lumen is enlarged after balloon
removal
6.
7. BALLOON ANGIOPLASTY
The improvement in luminal
diameter of vessel is mainly due
to cracking of the vessel wall that
frequently extends through the
plaque and the underlying
media,allowing expansion of both
the inner and outer diameter of
the treated segment.
8. TWO MAJOR LIMITATIONS OF
BALLOON ANGIOPLASTY :
*Abrupt vessel closure 2-8%
*Restenosis 30%-50%
12. STENTS(scaffolding devices)
Coronary stents have
fundamentally changed the
practice of interventional
cardiology by reducing early
complication(abrupt vessel
closure) and improving late
clinical outcome(restenosis) and it
is estimated that 50-80 percent of
PCI procedures now involved the
use of stent.