Left Atrial Pressure-Guided Heart Failure Optimization During Atrial Fibrillation Ablation (LAP AF-HF) (LAP AF-HF)
2026년 5월 17일 업데이트: Marcie G. Berger, MD, Medical College of Wisconsin
A Left Atrial Pressure-Triggered Pathway for Heart Failure Therapy Optimization at Atrial Fibrillation Ablation
This study examines whether measuring blood pressure inside the left upper chamber of the heart during a procedure to treat an irregular heartbeat called atrial fibrillation can help identify patients who would benefit from heart failure medications.
During atrial fibrillation ablation, a catheter crosses into the left atrium, allowing direct measurement of left atrial pressure.
When the pressure is elevated (15 mmHg or higher), it may indicate that the heart is under strain from unrecognized or undertreated heart failure.
Patients with elevated left atrial pressure during ablation are referred for heart failure evaluation and medication optimization within 24 hours of the procedure.
The study compares outcomes in these patients to a group of patients who had the same elevated pressures but received standard care without a structured heart failure evaluation.
The study measures whether the heart failure treatment pathway leads to greater use of recommended heart failure medications, improvements in heart pumping function and heart chamber size, and reduction in irregular heartbeat episodes over the following year
연구 개요
상태
모집하지 않고 적극적으로
상세 설명
Single-center prospective pathway study with historical standard-care controls at the Medical College of Wisconsin/Froedtert Hospital.
Consecutive patients undergoing catheter ablation for atrial fibrillation with intraprocedural mean left atrial pressure of 15 mmHg or greater measured at transseptal puncture are enrolled.
Prospective Pathway patients (2024-2025) receive heart failure consultation within 24 hours and structured guideline-directed medical therapy optimization.
Historical controls (2022-2023) met identical procedural and hemodynamic criteria but received standard post-ablation care.
Guideline-directed medical therapy implementation is quantified serially through 180 days using a guideline adherence index.
Echocardiographic remodeling is assessed at 3 to 18 months.
Atrial fibrillation burden is assessed by clinically directed rhythm monitoring beyond a 90-day blanking period.
연구 유형
관찰
등록 (추정된)
300
연락처 및 위치
이 섹션에서는 연구를 수행하는 사람들의 연락처 정보와 이 연구가 수행되는 장소에 대한 정보를 제공합니다.
연구 장소
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Wisconsin
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Milwaukee, Wisconsin, 미국, 53226
- Heart and Vascular Center - Center for Advanced Care - Froedtert Hospital
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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
- 성인
- 고령자
건강한 자원 봉사자를 받아들입니다
아니
샘플링 방법
비확률 샘플
연구 인구
Adults undergoing catheter ablation for atrial fibrillation at Froedtert Hospital, Medical College of Wisconsin, with intraprocedural mean left atrial pressure of 15 mmHg or greater measured immediately after transseptal puncture.
The study includes a prospective pathway cohort (2024 onwards) and a historical standard-care cohort (2022-2023) meeting the same procedural and hemodynamic criteria.
설명
Inclusion Criteria:
- Referred and presented for catheter ablation of atrial fibrillation
- Able to provide written informed consent
- Intraprocedural mean left atrial pressure 15 mmHg or greater measured immediately after transseptal puncture -- Written informed consent (prospective cohort 2024- onwards) or institutional review board waiver of consent (historical cohort 2022-2023)
Exclusion Criteria:
- No additional exclusion criteria
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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LAP-Triggered Pathway
Patients undergoing atrial fibrillation ablation with intraprocedural mean left atrial pressure of 15 mmHg or greater enrolled prospectively (2024-onwards).
Referred for heart failure consultation within 24 hours of ablation with structured guideline-directed medical therapy optimization targeting phenotype-appropriate therapy.
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Structured heart failure consultation within 24 hours of atrial fibrillation ablation triggered by intraprocedural mean left atrial pressure of 15 mmHg or greater.
Consultation includes review of cardiac history, volume status assessment, echocardiographic review, and individualized guideline-directed medical therapy recommendations based on left ventricular ejection fraction phenotype.
Final prescribing decisions rest with the treating clinical team
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Standard of Care Controls
Historical cohort (2022-2023) of consecutive patients who underwent atrial fibrillation ablation with intraprocedural mean left atrial pressure of 15 mmHg or greater.
Received standard post-ablation care without protocolized heart failure consultation or left atrial pressure-triggered medication optimization.
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연구는 무엇을 측정합니까?
주요 결과 측정
결과 측정 |
측정값 설명 |
기간 |
|---|---|---|
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Hierarchical Composite Clinical-Remodeling Outcome Assessed by Win Ratio
기간: Up to 36 months.
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Three-tier hierarchical composite analyzed by unmatched win ratio.
Tier 1: cardiovascular death within 3 years of ablation.
Tier 2: heart failure hospitalization within 3 years of ablation.
Tier 3: echocardiographic response defined as absolute increase in left ventricular ejection fraction of 10 percentage points or more from baseline to protocol-window follow-up echocardiogram at 3 to 18 months.
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Up to 36 months.
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2차 결과 측정
결과 측정 |
측정값 설명 |
기간 |
|---|---|---|
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Guideline Adherence Index
기간: Up to 36 months.
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Number of heart failure medication classes prescribed divided by the number of classes for which the patient has a guideline-supported indication and no documented contraindication.
Ranges from 0 to 1 with higher values indicating greater adherence.
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Up to 36 months.
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Guideline Adherence Index Area Under the Curve
기간: Up to 36 months.
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Time-weighted cumulative guideline adherence calculated from serial medication assessments at baseline, discharge, and scheduled follow-up intervals.
Higher values indicate greater sustained guideline-directed medical therapy implementation over time.
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Up to 36 months.
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Change in Left Ventricular Ejection Fraction From Baseline
기간: Up to 36 months.
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Left ventricular ejection fraction measured by biplane Simpson method on transthoracic echocardiography per American Society of Echocardiography recommendations.
Reported as absolute change in percentage points from baseline.
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Up to 36 months.
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Change in Left Atrial Volume Index From Baseline
기간: Up to 36 months.
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Left atrial volume indexed to body surface area measured by biplane area-length method on transthoracic echocardiography per American Society of Echocardiography recommendations.
Reported as absolute change in mL/m2 from baseline.
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Up to 36 months.
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Right Ventricular Function and Right Ventricular-Pulmonary Artery Coupling.
기간: Up to 36 months.
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Composite right ventricular assessment including tricuspid annular plane systolic excursion in centimeters, tricuspid annular systolic velocity in centimeters per second, tricuspid regurgitation peak velocity in meters per second, and the ratio of tricuspid annular plane systolic excursion to tricuspid regurgitation peak pressure gradient.
Each parameter reported as change from baseline.
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Up to 36 months.
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Atrial Fibrillation Recurrence and Burden After Blanking Period
기간: Up to 12 month.
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Atrial fibrillation recurrence defined as any episode of atrial fibrillation, atrial flutter, or atrial tachycardia lasting more than 30 seconds documented beyond a 90-day blanking period.
Atrial fibrillation burden defined as percentage of time spent in atrial fibrillation ascertained from cardiac implantable electronic device, implantable loop recorder, or ambulatory monitoring.
Both reported as post-blanking outcomes.
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Up to 12 month.
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기타 결과 측정
결과 측정 |
측정값 설명 |
기간 |
|---|---|---|
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Incidence of Clinically Significant Hyperkalemia
기간: Up to 36 months.
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Serum potassium greater than 5.5 mmol/L at any assessment point.
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Up to 36 months.
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Acute Kidney Injury per KDIGO Criteria
기간: Up to 36 months.
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Acute kidney injury defined by Kidney Disease Improving Global Outcomes criteria following guideline-directed medical therapy initiation.
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Up to 36 months.
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GDMT Discontinuation Rate
기간: Up to 36 months.
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Proportion of patients newly initiated on sodium-glucose cotransporter 2 inhibitor or mineralocorticoid receptor antagonist who discontinued therapy.
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Up to 36 months.
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Cardiovascular Death
기간: Up to 36 months.
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Death adjudicated as cardiovascular in origin by two physician investigators blinded to study group assignment with disagreements resolved by a third investigator.
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Up to 36 months.
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All-Cause Mortality
기간: Up to 36 months.
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Death from any cause ascertained from the electronic medical record and cross-verified with the Social Security Death Index.
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Up to 36 months.
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Heart Failure Hospitalization
기간: Up to 36 months.
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Admission exceeding 24 hours with a primary discharge diagnosis of heart failure and treatment with intravenous diuretics, vasodilators, or inotropes, in accordance with standardized cardiovascular endpoint definitions.
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Up to 36 months.
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Composite of Heart Failure Hospitalization or All-Cause Death
기간: Up to 36 months.
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First occurrence of heart failure hospitalization or death from any cause, whichever occurs first.
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Up to 36 months.
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공동 작업자 및 조사자
여기에서 이 연구와 관련된 사람과 조직을 찾을 수 있습니다.
수사관
- 수석 연구원: Alexander A Ivanov, MD, Medical College of Wisconsin
- 수석 연구원: Marcie MD Berger, Medical College of Wisconsin
연구 기록 날짜
이 날짜는 ClinicalTrials.gov에 대한 연구 기록 및 요약 결과 제출의 진행 상황을 추적합니다. 연구 기록 및 보고된 결과는 공개 웹사이트에 게시되기 전에 특정 품질 관리 기준을 충족하는지 확인하기 위해 국립 의학 도서관(NLM)에서 검토합니다.
연구 주요 날짜
연구 시작 (실제)
2024년 2월 12일
기본 완료 (추정된)
2029년 12월 31일
연구 완료 (추정된)
2029년 12월 31일
연구 등록 날짜
최초 제출
2026년 5월 10일
QC 기준을 충족하는 최초 제출
2026년 5월 17일
처음 게시됨 (실제)
2026년 5월 19일
연구 기록 업데이트
마지막 업데이트 게시됨 (실제)
2026년 5월 19일
QC 기준을 충족하는 마지막 업데이트 제출
2026년 5월 17일
마지막으로 확인됨
2026년 5월 1일
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IPD 공유 기간
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IPD 공유 액세스 기준
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