About this trial
A chronic total occlusion (CTO) is present in 15-20% of patients who are referred for invasive coronary angiography. CTO Percutaneous Coronary Intervention (PCI) procedure success rates have increased over the years and can be as high as 90% when performed by high-volume CTO operators.Procedurally, excess calcification in the CTO anatomy is one factor which makes it difficult to complete the procedure or obtain ideal stent expansion. Excess calcification is best identified by Computed Tomography Coronary Angiography (CTCA) rather than invasive angiography.
The investigators plan to retrospectively evaluate CTCA in patients who underwent CTO PCI and correlate calcification characteristics with CTO PCI outcomes and tools utilised for calcium modification.
Eligibility criteria
Qualifiers
Patients meeting all the below criteria will be included
≥18 years
Previous CTO PCI attempt in the last 5 years
Undergone CTCA either pre or post CTO PCI
Disqualifiers
Patients meeting any of the following criteria will be excluded
<18 years of age
Did not undergo CTCA
Inadequate/degraded CTCA images
Trial design
Treatments tested in this trial
- Not listed