Mechanisms Behind Microvascular Dysfunction in INOCA
Ориентир для пациента и семьи
Простыми словами
Автоматическая сводка по структурированным данным реестра. Она помогает сориентироваться, но не заменяет официальный протокол или оценку врача.
- Что изучают
- В протоколе указаны: [15O]H2O-PET Imaging.
- Кому может быть актуально
- Состояния в реестре: Coronary Microvascular Dysfunction, Ischaemia With Non Obstructed Coronary Arteries. Базовые параметры: от 50 лет · Все.
- Что важно проверить
- Возраст, диагноз и пол — только базовые ориентиры. Предыдущее лечение, анализы и другие обязательные условия указаны ниже в критериях участия.
- Где проводится
- Дания
- Следующий шаг
- Сохраните исследование, покажите его лечащему врачу и уточните актуальный статус у исследовательского центра. Расходы, документы и поездка →
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Официальное название
Identification of Mechanisms Behind Microvascular Dysfunction in Ischemia With No Obstructive Coronary Artery Disease
Обзор
The purpose of the study is to identify the causes of chest pain in patients experiencing chest pain with no signs of narrowing in the coronary arteries of the heart.
Подробное описание
A significant number of patients with ischemic heart disease do not exhibit coronary obstruction, leading to their symptoms being attributed to coronary microvascular dysfunction, a condition known as ischemia with no obstructive coronary artery disease (INOCA). Despite a considerable patient population affected by INOCA, the specific mechanisms underlying this microvascular dysfunction are not fully understood, often resulting in a lack of targeted treatment. There is evidence to suggest that exercise capacity is linked to coronary microvascular function, an area yet to be explored.
This study aims to identify mechanisms underlying Coronary microvascular dysfunction (CMD) in angina and to assess whether exercise training can improve the condition. In study part I 30 patients with impaired coronary microvascular function and 30 asymptomatic controls will be studied to identify vascular and related molecular mechanisms underlying INOCA by investigating microvascular function in the heart and in cutaneous tissue, skeletal muscle, and adipose tissue.
Вмешательства
- Диагностический тест [15O]H2O-PET Imaging
This imaging technique will be used to measure myocardial blood flow (MBF) and myocardial blood flow reserve (MBFR) in patients. The PET-CT scan involves the use of the radioactive tracer \[15O\]H2O to visualize blood flow in the heart, providing crucial data on coronary microvascular function.
Первичные конечные точки
- Vascular function in response to acetylcholine stress [Срок оценки: Baseline only]
Вторичные конечные точки (11)
- Vascular function in response to acetylcholine adenosine stress [Срок оценки: Baseline only]
- Myocardial Blood flow reserve [Срок оценки: Baseline only]
- Skeletal Muscle Microvascular Function [Срок оценки: Baseline only]
- Changes in isolated small artery reactivity assessed with myography [Срок оценки: Baseline only]
- Arterial Compliance [Срок оценки: Baseline only]
- Plasma Lipids [Срок оценки: Baseline only]
- Plasma HbA1c [Срок оценки: Baseline only]
- Plasma Levels of Markers Related to Vascular Function [Срок оценки: Baseline only]
- Plasma Levels of Inflammatory Markers [Срок оценки: Baseline only]
- Arterial Blood Pressure [Срок оценки: Baseline only]
- Cardiac Function [Срок оценки: Baseline only]
Критерии участия
Критерии включения
Only for angina patients: Have CMD, defined as myocardial bloodflow re-serve (MBFR) < 2.5 or hyperemic myocardial blood flow (hMBF) < 2.3ml/g/min
Критерии исключения
- Females of childbearing potential (defined as a premeno-pausal female capable of becoming pregnant). The female patient must either be postmenopausal, defined as amen-orrhea for at least 1 year, or surgically sterile
- Heart failure, defined as left ventricular ejection fraction of less than 40%
- Uncontrolled hypertension defined as blood pressure above target 140/90 for all
- Co-morbidity resulting in <1 year expected survival
- Considered by the investigator, for any reason, to be an unsuitable candidate for the study.
- Unable or unwilling to exercise, e.g. due to arthritis or injury\*
- Already are regularly physically active and/or have a maximal oxygen uptake >45 ml/kg/min
- The subject has a known allergy to either: norepinephrine, adenosine, ketorolac, and or ascorbic acid (vitamin C).
Критерии приведены из реестра в оригинале (на английском). Окончательную оценку соответствия проводит исследовательский центр.
Здоровые добровольцы: Да
Дизайн исследования
- Модель наблюдения
- Когортное
Центры проведения
Дания · 1 центр
- Frederiksberg Hospital, Dept. of Cardiology, Building 16, Y3, Nordre Fasanvej 57, Frederik — Copenhagen
Идентификаторы
NCT: NCT06529861 · ExINOCA - Part I