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==Table 2== | ==Table 2== | ||
{| class="wikitable" style="font-size:90%; border:1px solid darkgray;" | {| class="wikitable" style="font-size:90%; border:1px solid darkgray;" cellspacing="0" | ||
|+'''Characteristics of Type A, B, and C Lesions''' | |+'''Characteristics of Type A, B, and C Lesions''' | ||
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! style="width: | ! style="width:300px; border-bottom:1px solid darkgray; background-color:#f2f2f2" | Lesion-Specific Characteristics | ||
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| '''Type A lesions (minimally complex)''' | | style="border-bottom:1px solid darkgray" | '''Type A lesions (minimally complex)''' | ||
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| Discrete (length <10 mm) | | style="border-bottom:1px solid darkgray; padding-left:12px" | Discrete (length <10 mm) | ||
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| Concentric | | style="border-bottom:1px solid darkgray; padding-left:12px" | Concentric | ||
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| Readily accessible | | style="border-bottom:1px solid darkgray; padding-left:12px" | Readily accessible | ||
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| Nonangulated segment (<45°) | | style="border-bottom:1px solid darkgray; padding-left:12px" | Nonangulated segment (<45°) | ||
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| Smooth contour | | style="border-bottom:1px solid darkgray; padding-left:12px" | Smooth contour | ||
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| Little or no calcification | | style="border-bottom:1px solid darkgray; padding-left:12px" | Little or no calcification | ||
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| Less than totally occlusive | | style="border-bottom:1px solid darkgray; padding-left:12px" | Less than totally occlusive | ||
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| Not ostial in location | | style="border-bottom:1px solid darkgray; padding-left:12px" | Not ostial in location | ||
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| No major side branch involvement | | style="border-bottom:1px solid darkgray; padding-left:12px" | No major side branch involvement | ||
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| Absence of thrombus | | style="border-bottom:1px solid darkgray; padding-left:12px" | Absence of thrombus | ||
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| '''Type B lesions (moderately complex)<sup>∗</sup>''' | | style="border-bottom:1px solid darkgray" | '''Type B lesions (moderately complex)<sup>∗</sup>''' | ||
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| Tubular (length 10 to 20 mm) | | style="border-bottom:1px solid darkgray; padding-left:12px" | Tubular (length 10 to 20 mm) | ||
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| Eccentric | | style="border-bottom:1px solid darkgray; padding-left:12px" | Eccentric | ||
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| Moderate tortuosity of proximal segment | | style="border-bottom:1px solid darkgray; padding-left:12px" | Moderate tortuosity of proximal segment | ||
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| Moderately angulated segment (>45°, <90°) | | style="border-bottom:1px solid darkgray; padding-left:12px" | Moderately angulated segment (>45°, <90°) | ||
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| Irregular contour | | style="border-bottom:1px solid darkgray; padding-left:12px" | Irregular contour | ||
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| Moderate or heavy calcification | | style="border-bottom:1px solid darkgray; padding-left:12px" | Moderate or heavy calcification | ||
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| Total occlusions <3 mo old | | style="border-bottom:1px solid darkgray; padding-left:12px" | Total occlusions <3 mo old | ||
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| Ostial in location | | style="border-bottom:1px solid darkgray; padding-left:12px" | Ostial in location | ||
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| Bifurcation lesions requiring double guide wires | | style="border-bottom:1px solid darkgray; padding-left:12px" | Bifurcation lesions requiring double guide wires | ||
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| Some thrombus present | | style="border-bottom:1px solid darkgray; padding-left:12px" | Some thrombus present | ||
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| '''Type C lesions (severely complex)''' | | style="border-bottom:1px solid darkgray" | '''Type C lesions (severely complex)''' | ||
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| Diffuse (length >2 cm) | | style="border-bottom:1px solid darkgray; padding-left:12px" | Diffuse (length >2 cm) | ||
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| Excessive tortuosity of proximal segment | | style="border-bottom:1px solid darkgray; padding-left:12px" | Excessive tortuosity of proximal segment | ||
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| Extremely angulated segments >90° | | style="border-bottom:1px solid darkgray; padding-left:12px" | Extremely angulated segments >90° | ||
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| Total occlusions >3 mo old and/or bridging collaterals | | style="border-bottom:1px solid darkgray; padding-left:12px" | Total occlusions >3 mo old and/or bridging collaterals | ||
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| Inability to protect major side branches | | style="border-bottom:1px solid darkgray; padding-left:12px" | Inability to protect major side branches | ||
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| Degenerated vein grafts with friable lesions | | style="border-bottom:1px solid darkgray; padding-left:12px" | Degenerated vein grafts with friable lesions | ||
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