A multicenter prospective observational study using intracoronary imaging to investigate factors that predict no-reflow in acute coronary syndromes

A multicenter prospective observational study using intracoronary imaging to investigate factors that predict no-reflow in acute coronary syndromes - The CRYSTAL-OCT study

Status

Recruiting

Phases

Unknown

Study type

Observational

Source

JPRN

Registry ID

JPRN-UMIN000056399

Enrollment

300

Registered

2024-12-09

Start date

2023-01-01

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Acute coronary syndrome

Interventions

None listed

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Acute coronary syndrome

Exclusion criteria

Exclusion criteria: Patients who underwent coronary artery bypass grafting, did not undergo PCI, or underwent PCI without OCT were excluded. Additional exclusion criteria were small vessels (<2.0 mm in diameter), extreme vessel tortuosity, and cardiogenic shock requiring mechanical circulatory support before PCI.

Design outcomes

Primary

Measure	Time frame
Plaque characteristics assessed by intra-coronary imaging (by OCT). Evaluation of no-reflow phenomenon in coronary angiography.	—

Countries

Japan

Contacts

Public ContactYuichi Ozaki

Wakayama Medical University Department of Cardiovascular Medicine

yozaki@wakayama-med.ac.jp073-441-0621

Outcome results