Prognostic Impact of Lesion-specific Hemodynamic Index in Patients With Coronary Artery Disease (PRIME-FFR)
2022년 2월 10일 업데이트: Bon-Kwon Koo, Seoul National University Hospital
Prognostic Impact of Lesion-specific Hemodynamic Index and Disease Characteristics in Patients With Coronary Artery Disease Assessed by Fractional Flow Reserve
The investigators aim to investigate the additive prognostic value of lesion-specific hemodynamic index such as ΔFFR, non-hyperemic pressure ratio such as RFR, over % diameter stenosis and FFR according to treatment strategy, and to find the prognostic implications of post-PCI FFR after adjustment of various clinical and disease characteristics, and to construct a comprehensive risk prediction model for post-PCI outcomes.
연구 개요
상세 설명
Fractional flow reserve (FFR)-based revascularization is the currently best practice recommended by guidelines.
In addition to the use of coronary physiological indices as a vessel-specific metric, recent studies suggested the clinical importance of local hemodynamics in prediction of risk for target vessel failure or acute coronary syndrome in patients with coronary artery disease.
In patients who receive percutaneous coronary intervention (PCI), the absolute value and pattern of FFR change after stenting are helpful in defining the additional target for PCI and risk stratification after PCI.
However, there has been no prospective study that proved the benefit of change in FFR across the lesion (ΔFFR) in daily clinical practice, and FFR usage after stenting is much less than before stenting.
Accordingly, we will prove the benefit of ΔFFR in addition to FFR, prognostic implications of combining RFR and FFR, and the comprehensive risk model with post-PCI FFR, clinical and disease characteristics in a prospective study, to maximize the benefit of invasive physiologic assessment.
연구 유형
관찰
등록 (예상)
2429
연락처 및 위치
이 섹션에서는 연구를 수행하는 사람들의 연락처 정보와 이 연구가 수행되는 장소에 대한 정보를 제공합니다.
연구 연락처
- 이름: Bon-Kwon Koo, MD, PhD
- 전화번호: +82-2-2072-2062
- 이메일: bkkoo@snu.ac.kr
연구 연락처 백업
- 이름: Seokhun Yang, MD
- 전화번호: +82-2-2072-2062
- 이메일: newturnz7@gmail.com
연구 장소
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Seoul, 대한민국, 110-744
- 모병
- Seoul National University Hospital
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연락하다:
- Bon-Kwon Koo, MD, PhD
- 전화번호: +82-2-2072-2062
- 이메일: bkkoo@snu.ac.kr
-
연락하다:
- Seokhun Yang, MD
- 전화번호: +82-2-2072-2062
- 이메일: newturnz7@gmail.com
-
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참여기준
연구원은 적격성 기준이라는 특정 설명에 맞는 사람을 찾습니다. 이러한 기준의 몇 가지 예는 개인의 일반적인 건강 상태 또는 이전 치료입니다.
자격 기준
공부할 수 있는 나이
20년 이상 (성인, 고령자)
건강한 자원 봉사자를 받아들입니다
아니
연구 대상 성별
모두
샘플링 방법
비확률 샘플
연구 인구
Patients with suspected coronary artery disease who undergo FFR measurement and pullback tracing will be included.
If the patients receive PCI after FFR measurement, those with available both preprocedural and postprocedural FFR measurement will be included.
설명
Inclusion Criteria:
- Age ≥20 years
- All comers who underwent successful FFR measurement and pullback tracing
Exclusion Criteria:
- Chronic renal failure (estimated glomerular filtration rate <30)
- ST-elevation myocardial infarction within 72 hours or previous coronary artery bypass graft surgery history
- Primary myocardial or valvular disease
- Left ventricular ejection fraction < 30%
- Hemodynamically unstable clinical conditions
- Life expectancy < 2 years
공부 계획
이 섹션에서는 연구 설계 방법과 연구가 측정하는 내용을 포함하여 연구 계획에 대한 세부 정보를 제공합니다.
연구는 어떻게 설계됩니까?
디자인 세부사항
코호트 및 개입
그룹/코호트 |
개입 / 치료 |
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Deferral of PCI group
Patients who undergo successful FFR pullback tracing and have a vessel determined to defer revascularization after FFR measurement will be included.
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Physiologic assessment includes Δ FFR (lesion-specific) and FFR (vessel-specific) measurement.
Δ FFR is defined as a pressure step up across the lesion.
Coronary angiography and physiologic assessment will be analyzed by an independent core laboratory (Seoul National University Hospital, Clinical Trial Center, Seoul, South Korea).
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PCI group
Patients who undergo successful FFR pullback tracing and have a vessel that undergo stent implantation and FFR measurement both before and after revascularization (pre-PCI FFR and post-PCI FFR) will be included.
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Physiologic assessment includes Δ FFR (lesion-specific) and FFR (vessel-specific) measurement.
Δ FFR is defined as a pressure step up across the lesion.
Coronary angiography and physiologic assessment will be analyzed by an independent core laboratory (Seoul National University Hospital, Clinical Trial Center, Seoul, South Korea).
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연구는 무엇을 측정합니까?
주요 결과 측정
결과 측정 |
측정값 설명 |
기간 |
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Adverse cardiovascular event according to ΔFFR (Deferral of PCI group)
기간: Upto 2 years after index procedure
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Composite of 2-year target vessel revascularization, target vessel myocardial infarction, and cardiac death
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Upto 2 years after index procedure
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Adverse cardiovascular event according to post-PCI FFR (PCI group)
기간: Upto 2 years after index procedure
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Composite of 2-year target vessel revascularization, target vessel myocardial infarction, and cardiac death
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Upto 2 years after index procedure
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공동 작업자 및 조사자
여기에서 이 연구와 관련된 사람과 조직을 찾을 수 있습니다.
협력자
간행물 및 유용한 링크
연구에 대한 정보 입력을 담당하는 사람이 자발적으로 이러한 간행물을 제공합니다. 이것은 연구와 관련된 모든 것에 관한 것일 수 있습니다.
일반 간행물
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연구 기록 날짜
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연구 주요 날짜
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2021년 8월 1일
기본 완료 (예상)
2025년 12월 31일
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2026년 12월 31일
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연구 기록 업데이트
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2022년 2월 22일
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추가 정보
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