title: Abnormal origin of right coronary artery and use of Tiger catheter through femoral route.
abstract: BACKGROUND
  Abnormal origin of right coronary artery (RCA) is not uncommon. The incidence is .25-.92%. Right Judkin catheter is used universally for engaging right coronary ostium from femoral route. We have tried Tiger catheter from femoral route in abnormal origin of RCA patients. We were successful in cannulating RCA ostium in most of the cases.
  
  
  METHODS
  We have studied about 5120 patients over 4 years. We have selected patients from November 2010 to November 2014. Our patients are from two institutions-I.P.G.M.E.R., Kolkata and Burdwan Medical College, West Bengal. Right Judkin 3.5 and 4 were used universally. We have used AL-1,2,3, AR1,2, multipurpose, different guide catheters for cannulating RCA ostium in those cases where we failed to engage by right Judkin catheter. We have used Tiger catheter as a last resort when all endeavor failed.
  
  
  RESULTS
  Among 40 cases of left sinus origin Type A-9, Type B-14, Type C-6, Type D-3, and Type E-8 patients were observed. But 668 cases abnormal origin of RCA were from right coronary sinus only. High take-off origin were 422 cases (8%), low take-off were 132 cases (2.5%), and posterior origin were 114 cases (2%). We could engage right coronary ostium by Tiger catheter in 690 cases (97%). We failed in 23 cases (3%).
  
  
  CONCLUSIONS
  Tiger catheter can be used successfully in abnormal RCA origin cases. It is more effective but less risky in comparison to other catheters.
authors.affiliation: Associate Professor, Burdwan Medical College, P3 Lake Gardens Govt. Housing, 48/4 Sultan Alam Road, Calcutta 33, India. Electronic address: goutamdattadn@yahoo.in.
authors.forename: Goutam
authors.initials: G
authors.lastname: Datta
authors.affiliation: DM Resident, Burdwan Medical College, India.
authors.forename: Durga Prasad
authors.initials: DP
authors.lastname: Rai
mesh_terms: D006328:Cardiac Catheterization / Q000295:instrumentation*; D062906:Cardiac Catheters; D017023:Coronary Angiography; D003330:Coronary Vessel Anomalies / Q000175:diagnosis / Q000628:therapy*; D003331:Coronary Vessels / Q000000981:diagnostic imaging*; D005263:Femoral Artery; D005500:Follow-Up Studies; D006801:Humans; D012189:Retrospective Studies
keywords: Abnormal origin of right coronary artery; Femoral route; Use of Tiger catheter