LiquID Guide Catheter Extension Safety Study

Inclusion Criteria - participants must be: 1. scheduled for non-emergent, percutaneous coronary procedure in which the use of a guide catheter extension is anticipated 2. able to provide informed consent to participate in the study Exclusion Criteria - participants must not have: 1. evidence of ongoing ST-elevation myocardial infarction (STEMI) or STEMI treatment for late presentation STEMI with index admission (stabilized acute coronary syndrome allowed) 2. left ventricular ejection fraction \<20% 3. required intervention in a saphenous vein graft 4. an intolerance or known allergy to medications/contrast expected to be used during the procedure or during hospital stay 5. had a cardiac intervention within two weeks of the procedure 6. renal insufficiency (serum creatinine of \> 2.3 mg/dl) 7. active gastrointestinal bleeding 8. an active infection or fever (\>37.8º C) that may be due to infection 9. significant anemia (hemoglobin \< 8.0 mg / dl) 10. severe uncontrolled systemic hypertension (systolic press. \> 240 mm Hg within the past month) 11. a severe electrolyte imbalance 12. congestive heart failure (NYHA Class IV) 13. presented with an acute coronary syndrome where serum troponin concentrations have not been demonstrated to be declining prior to the scheduled procedure (within the past two weeks) 14. uncontrolled diabetes (\> 2 serum glucose concentrations of \> 350 mg/dl within the past 7 days) 15. participation in an investigational protocol 16. unwillingness or inability to comply with any protocol requirements 17. angina, or ischemia caused by occluded artery 18. other clinical conditions, that in the opinion of the investigator significantly compromise the ability to perform a safe and/or effective procedure Vulnerable Population Exclusion - participants must not be: 1. under 18 years old 2. pregnant or nursing 3. immuno-compromised 4. over 89 years old 5. incapacitated, mentally compromised or otherwise incapable of understanding and/or providing informed consent (including emergency situations)