- ICH GCP
- 미국 임상 시험 레지스트리
- 임상시험 NCT07823998
Coffee Use, Physical Activity and Symptomatic Ventricular Arrhythmias in Patients With Left Ventricular Dysfunction and an ICD (CUPS-ICD)
The goal of this observational study is to learn whether caffeine consumption is associated with ventricular arrhythmias and physical activity in adults with heart failure, reduced left ventricular ejection fraction, and an implantable cardioverter-defibrillator (ICD). The main questions it aims to answer are:
Is caffeine consumption associated with the burden of premature ventricular contractions (PVCs)? Is caffeine consumption associated with the occurrence of ventricular arrhythmias, including non-sustained ventricular tachycardia (NSVT), sustained monomorphic ventricular tachycardia (SMVT), and ventricular fibrillation (VF)? Is caffeine consumption associated with the level of daily physical activity recorded by the ICD?
Participants will:
Complete a one-time questionnaire about their consumption of coffee and other caffeine-containing products during the previous 7 days.
Allow researchers to collect relevant information from their medical records. Allow researchers to use data already collected during the routine follow-up of their ICD, including information on heart rhythm abnormalities, heart rate, and physical activity.
No additional hospital visits, medical examinations, blood tests, or changes to treatment are required as part of this study.
연구 개요
연구 유형
등록 (추정된)
연락처 및 위치
연구 장소
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Bruges, 벨기에
- AZ Sint-Jan Brugge
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연락하다:
- Dr. Jesús Diz Díaz
- 전화번호: +3250452670
- 이메일: cardiologie@azsintjan.be
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참여기준
자격 기준
공부할 수 있는 나이
- 성인
- 고령자
건강한 자원 봉사자를 받아들입니다
샘플링 방법
연구 인구
설명
Inclusion Criteria:
- Written informed consent obtained prior to any study procedure.
- Age ≥18 years.
- Left ventricular systolic dysfunction (LVEF <50%), i.e. HFrEF or HFmrEF, documented on the most recent available transthoracic echocardiogram.
- Presence of a transvenous implantable cardioverter-defibrillator (ICD), including cardiac resynchronization therapy defibrillators (CRT-D), implanted at least 12 months before the caffeine questionnaire.
Exclusion Criteria:
- Presence of channelopathies.
- Subcutaneous implantable cardioverter-defibrillator (S-ICD), which does not provide ventricular ectopic beat counters, accelerometer-derived physical activity data or antitachycardia pacing, and therefore cannot generate the primary outcome measure.
- Inability to complete the study questionnaire on coffee and caffeinated product consumption.
공부 계획
연구는 어떻게 설계됩니까?
디자인 세부사항
연구는 무엇을 측정합니까?
주요 결과 측정
결과 측정 |
측정값 설명 |
기간 |
|---|---|---|
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Burden of premature ventricular contractions (PVCs)
기간: 12 months
|
Burden of premature ventricular contractions (PVCs), expressed as the percentage of total recorded ventricular beats represented by PVCs (%PVC burden), as provided by the device's remote monitoring software, assessed over the 12 months immediately preceding the date of the caffeine questionnaire, averaged across all monitored days.
Unit: percent (%).
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12 months
|
2차 결과 측정
결과 측정 |
측정값 설명 |
기간 |
|---|---|---|
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Non-sustained ventricular tachycardia (NSVT): occurrence (%)
기간: 12 months
|
Non-sustained ventricular tachycardia (NSVT).
Untreated episodes of at least three consecutive ventricular beats above the programmed detection cut-off, lasting less than 30 seconds.
For each episode, the device-assigned date and time will be recorded.
Reported as occurrence (percentage of participants).
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12 months
|
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Non-sustained ventricular tachycardia (NSVT): rate
기간: 12 months
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Non-sustained ventricular tachycardia (NSVT).
Untreated episodes of at least three consecutive ventricular beats above the programmed detection cut-off, lasting less than 30 seconds.
For each episode, the device-assigned date and time will be recorded.
Reported as rate (episodes per 100 monitored days).
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12 months
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Non-sustained ventricular tachycardia (NSVT): distribution
기간: 12 months
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Non-sustained ventricular tachycardia (NSVT).
Untreated episodes of at least three consecutive ventricular beats above the programmed detection cut-off, lasting less than 30 seconds.
For each episode, the device-assigned date and time will be recorded.
Reported as the distribution of episodes across time.
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12 months
|
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Sustained monomorphic (SMVT) and polymorphic ventricular tachycardia (PVT/VF): occurrence (%)
기간: 12 months
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Sustained monomorphic (SMVT) and polymorphic ventricular tachycardia (PVT/VF).
Episodes lasting at least 30 seconds or terminated by device therapy.
Reported as occurrence (percentage of participants).
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12 months
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Sustained monomorphic (SMVT) and polymorphic ventricular tachycardia (PVT/VF): rate
기간: 12 months
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Sustained monomorphic (SMVT) and polymorphic ventricular tachycardia (PVT/VF).
Episodes lasting at least 30 seconds or terminated by device therapy.
Reported as rate (episodes per 100 monitored days).
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12 months
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Sustained monomorphic (SMVT) and polymorphic ventricular tachycardia (PVT/VF): median episode duration (seconds)
기간: 12 months
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Sustained monomorphic (SMVT) and polymorphic ventricular tachycardia (PVT/VF).
Episodes lasting at least 30 seconds or terminated by device therapy.
Reported as median episode duration (seconds).
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12 months
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Sustained monomorphic (SMVT) and polymorphic ventricular tachycardia (PVT/VF): mode of termination
기간: 12 months
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Sustained monomorphic (SMVT) and polymorphic ventricular tachycardia (PVT/VF).
Episodes lasting at least 30 seconds or terminated by device therapy.
Reported as mode of termination (percentage of episodes terminating spontaneously, by antitachycardia pacing, or by shock).
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12 months
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Sustained monomorphic (SMVT) and polymorphic ventricular tachycardia (PVT/VF): mean cycle length (ms)
기간: 12 months
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Sustained monomorphic (SMVT) and polymorphic ventricular tachycardia (PVT/VF).
Episodes lasting at least 30 seconds or terminated by device therapy.
Reported as mean cycle length (milliseconds).
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12 months
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Physical activity (hours per day)
기간: 12 months
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Physical activity, absolute.
Daily physical activity recorded by the ICD accelerometer and reported by the remote monitoring platform, averaged across monitored days; platforms reporting activity as a proportion of the day are converted by multiplying by 24.
Unit: hours per day.
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12 months
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Physical activity: mean daily activity expressed as a z-score
기간: 12 months
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Physical activity, manufacturer-standardised. Each participant's mean daily activity expressed as a z-score relative to the mean and standard deviation of all study participants monitored on the same platform.
Unit: standard deviation units.
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12 months
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공동 작업자 및 조사자
연구 기록 날짜
연구 주요 날짜
연구 시작 (추정된)
기본 완료 (추정된)
연구 완료 (추정된)
연구 등록 날짜
최초 제출
QC 기준을 충족하는 최초 제출
처음 게시됨 (실제)
연구 기록 업데이트
마지막 업데이트 게시됨 (실제)
QC 기준을 충족하는 마지막 업데이트 제출
마지막으로 확인됨
추가 정보
이 연구와 관련된 용어
추가 관련 MeSH 약관
기타 연구 ID 번호
- CUPS-ICD
약물 및 장치 정보, 연구 문서
미국 FDA 규제 의약품 연구
미국 FDA 규제 기기 제품 연구
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