PCI: classification of the lesion: Difference between revisions
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'''Type A:''' | '''Type A:''' | ||
<10mm, discrete, concentric readily accessible, <45 degree angle smooth contour, little or no calcification, less than totally occluded, not ostial, no major side branch involvement, absence of thrombus. | <10mm, discrete, concentric readily accessible, <45 degree angle smooth contour, little or no [[calcification]], less than totally occluded, not ostial, no major side branch involvement, absence of [[thrombus]]. | ||
'''Type B:''' | '''Type B:''' | ||
One of the following characteristics: | One of the following characteristics: | ||
10-20mm, eccentric, moderate tortuosity or proximal segment, irregular contour, presence of any thrombus grade, moderate or heavy calcification, total occlusion <3 months old, ostial lesion or bifurcation lesion requiring two guide wires. | 10-20mm, eccentric, moderate [[tortuosity]] or proximal segment, irregular contour, presence of any [[thrombus grade]], moderate or heavy [[calcification]], total [[occlusion]] <3 months old, ostial lesion or bifurcation [[lesion]] requiring two guide wires. | ||
'''Type B2:''' | '''Type B2:''' | ||
Two or more of the following characteristics: | Two or more of the following characteristics: | ||
10-20mm, eccentric, moderate tortuosity or proximal segment, irregular contour, presence of any thrombus grade, moderate or heavy calcification, total occlusion <3 months old, ostial lesion or bifurcation lesion requiring two guide wires. | 10-20mm, eccentric, moderate [[tortuosity]][ or proximal segment, irregular contour, presence of any [[thrombus]] grade, moderate or heavy [[calcification]], total [[occlusion]] <3 months old, ostial [[lesion]] or bifurcation [[lesion]] requiring two guide wires. | ||
'''Type C:''' | '''Type C:''' | ||
>20 mm diffuse, excessive tortuosity of proximal segment, total occlusion >3 months old and/or bridging collaterals inability to protect major side branches, degenerated vein graft with friable lesions. | >20 mm diffuse, excessive [[tortuosity]] of proximal segment, total [[occlusion]] >3 months old and/or bridging [[collaterals]] inability to protect major side branches, degenerated [[Saphenous vein graft|vein graft]] with friable [[lesions]]. | ||
Revision as of 19:04, 30 April 2010
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According to the Abrupt Vessel Closure - AHA Task Force Definition, as modified by Ellis et al., coronary lesion complexity is graded as A, B1, B2, and C.
Type A: <10mm, discrete, concentric readily accessible, <45 degree angle smooth contour, little or no calcification, less than totally occluded, not ostial, no major side branch involvement, absence of thrombus.
Type B: One of the following characteristics: 10-20mm, eccentric, moderate tortuosity or proximal segment, irregular contour, presence of any thrombus grade, moderate or heavy calcification, total occlusion <3 months old, ostial lesion or bifurcation lesion requiring two guide wires.
Type B2: Two or more of the following characteristics: 10-20mm, eccentric, moderate tortuosity[ or proximal segment, irregular contour, presence of any thrombus grade, moderate or heavy calcification, total occlusion <3 months old, ostial lesion or bifurcation lesion requiring two guide wires.
Type C: >20 mm diffuse, excessive tortuosity of proximal segment, total occlusion >3 months old and/or bridging collaterals inability to protect major side branches, degenerated vein graft with friable lesions.