Introduction: Coronary artery bypass grafts are prone to accelerated atherosclerosis and as such graft stenosis is frequently encountered in clinical practice. Complications specific to graft- PCI include no-reflow, distal embolization, stent restenosis and thrombosis. Graft perforation during PCI is a rare coomplication of the procedure. Published literature on the predictors of perforation and management strategy remains limited to anecdotal cases.
Method: In this review we collected data on all cases of graft perforations reported in PubMed/Medline from 1987 to 2015.
Result: 37 cases of graft perforation were reported. High risk grafts for perforations included, old grafts (14±7.8years) with more than 80% luminal stenosis. Perforations were noted after use of different cardiac devices and included stent placement (30%, N=11), balloon angioplasty (36%, N=14), post-dilation with non complaint balloon (16%, N=6), guide wire perforation (1 case), post IVUS imaging (1 case) and one case after use of thrombus extraction device. Average stent diameter of 3.7±0.7 mm, average balloon pressure of 15.5±5 atm and 3 or more balloon inflations commonly resulted in graft perforation. 78% of cases reported class III perforation. Covered stent implantation was strongly associated with controlling acute bleed after graft perforation than prolonged balloon inflation (p=0.0001). Majority of cases reported using covered stents (81%). Average stent diameter of 3.9±0.7mm, average stent length of 18.5±6mm and the average deployment pressure of 14±2atm were reported to be effective in controlling the bleed. 95% of the patients did well post procedure and with prolonged hospitalization (8±4days). 24% of cases reported cardiac tamponade causing hemodynamic compromise including 2 peri-procedural deaths.
Conclusion: Graft perforation can be effectively treated with covered stent grafts with good immediate results, short term outcome and acceptable peri-procedural risks.
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