Outcomes, Patient Health Status, and Efficiency in Chronic Total Occlusion

- 1,000 participants will be enrolled into the OPEN CTO study.

- Study coordinators will screen both men and women over the age of 18 who are admitted
for an elective CTO-PCI procedure.

- Study coordinators will be trained by the Coordinating Center at Saint Luke's Hospital
of Kansas City.

- Participants will be screened for Eligibility, and Informed Consent will be obtained.

- Participants will also be asked to sign a Medical Records Release form, and a Billing
Records Release form.

- Detailed procedural data will be obtained by the Study Coordinator and local Principal
Investigator.

- Participants will undergo a Baseline interview.

- These data will be entered into the electronic data capture system, Velos, which has
stringent protections and quality controls.

- Participants will have telephone follow-up interviews conducted by the centralized
Follow-up Center at Saint Luke's Hospital.

Inclusion Criteria:

- Subject is scheduled for a PCI procedure for at least one chronic total occlusion with
TIMI antegrade flow of zero.

- Subject is ≥ 18 years of age at the time of consent.

Exclusion Criteria:

- The CTO segment is in a graft

- Female subjects with a positive quantitative or qualitative pregnancy test, in
accordance with hospital policy.

- Non-English speaking

- Too hard of hearing to do follow-up by telephone.

- Previously enrolled in OPEN CTO Registry

- Currently a prisoner

- Dementia

- Subjects with no way contact by telephone for follow-up.