- ICH GCP
- Реестр клинических исследований США
- Клиническое испытание NCT07568275
Comparison of Angiotensin II to Standard Dose Vasopressors on Change in Arterial Elastance (Ang2)
Comparison of Angiotensin II to Standard Dose Vasopressors on Change in Arterial Elastance in Cirrhotic Patients With Vasodilatory Shock: A Prospective, Randomized Controlled Trial
A study to see whether a medication called Angiotensin II works better than the routinely used medication to raise blood pressure in people with liver disease who are experiencing a serious drop in blood pressure.
The investigators want to find out if Angiotensin II can help the heart and blood vessels work together more effectively than standard treatments.
Обзор исследования
Статус
Вмешательство/лечение
Подробное описание
Sepsis and septic shock remain associated with significant mortality, especially in cirrhotic where the mortality with septic shock exceeds 70%. Cirrhotic cardiomyopathy is a well-recognized consequence of advanced liver dysfunction and is associated with a hyperdynamic circulatory state due to vasoplegia in this population. Our group has shown septic patients with cirrhosis had higher LV systolic function as assessed by Left ventricle Ejection fraction (LVEF %), stroke volume and cardiac output with a significantly higher percentage of patients with hyperdynamic state (LVEF > 70%) than those without cirrhosis.
The investigators measured arterial elastance and ventricular elastance using echocardiography and found cirrhotic patient to have significantly lower arterial elastance with higher ventricular elastance. AII (Angiotensin II) exert its effect after the hydrolysis of Ang-1 by angiotensin converting enzyme (ACE) and is the principal product of the renin-angiotensin-aldosterone system. Advance cirrhosis is associated with reduction in Ang II levels accompanied by an increased Ang-(1-7)/Ang II ratio in the splanchnic circulation may be, at least in part, responsible for changes in vascular splanchnic tone. In addition, the relative decrease in Ang II compared to Ang (1-7), the vasodilator component of RAS causes hyperdynamic circulation from lower SVR in cirrhotic. This study also showed that with progression of liver disease leads to continual splanchnic vasodilation from higher Ang (1-7)/Ang II ratio. In advance stages this resultant hyperdynamic circulation is still insufficient to compensate for the effective arterial hypovolemia. Similar finding was observed in our large study, where the VAC was significantly lower in cirrhotic with sepsis shock despite elevation in LV elastance compared to non-cirrhotic with septic shock.
Angiotensin II, a naturally occurring octapeptide hormone increases blood pressure through various mechanisms, including vasoconstriction of peripheral vessels, potentiation of antidiuretic hormone (ADH) and adrenocorticotropin hormone (ACTH) release, and direct actions on postganglionic sympathetic fibers. The external Ang II administration will be able to reverse the altered Ang (I-7)/Ang II ratio in systemic circulation reversing vasodilation. The investigators hypothesize that external administration of Ang II will cause a higher increase in SVR in cirrhotic with septic shock compared to Standard of Care (SOC) by decreasing arterial elastance restoring non-invasive arterial ventricular coupling.
Тип исследования
Регистрация (Действительный)
Фаза
- Ранняя фаза 1
Контакты и местонахождение
Места учебы
-
-
Ohio
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Cleveland, Ohio, Соединенные Штаты, 44195
- The Cleveland Clinic
-
-
Критерии участия
Критерии приемлемости
Возраст, подходящий для обучения
- Взрослый
- Пожилой взрослый
Принимает здоровых добровольцев
Описание
Inclusion Criteria:
- Age ≥ 18 years at the time of enrollment
- Septic shock as defined by Sepsis-3 criteria (highly suspected or confirmed infection, requiring norepinephrine to maintain a MAP ≥ 65 mmHg, and serum lactate > 2 mmol/L after adequate fluid resuscitation) within a 48 hour window prior to enrollment
- Confirmed cirrhotic patient (Radiological/Biopsy/Physician confirmed)
- Preserved cardiac function as assessed using point-of-care ultrasonography or a non-invasive hemodynamic monitoring device with either LVOT VTI > 18 cm or stroke volume > 50 ml Within 48 hours of onset of shock.
- Standard of care vasopressors are at a norepinephrine equivalent of 15 mcg/min
Exclusion Criteria:
- Declined consent.
- Pregnancy
- CKD-Stage IV/V
- ESRD on long-term hemodialysis
- On Dialysis or planned dialysis to be initiated within 24 hours of study of enrollment.
- Clinically determined to have primarily hepatorenal syndrome.
- On other vasoactive medication (phenylephrine, Terlipressin, epinephrine, dobutamine, dopamine)
- Hemorrhagic, obstructive, or hypovolemic shock is not the primary cause of shock based on clinical judgement.
- DNR
- Patients declared Brain dead.
- Anticipated death within 48 hours of enrollment
- Echocardiographic windows not available
- Acute mesenteric Ischemia
- Active gastrointestinal bleeding
- Active cardiac ischemic event defined as NSTEMi, STEMI
- Acute DVT/Pulmonary embolism/Portal vein thrombosis
- > 48 h since initiation of vasopressor agent
- Cardiac function assessment show LVOT VTI < 18 cm or stroke volume < 50 ml/min
- Norepinephrine equivalent dose > 50mcg/min
Учебный план
Как устроено исследование?
Детали дизайна
- Основная цель: Уход
- Распределение: Рандомизированный
- Интервенционная модель: Параллельное назначение
- Маскировка: Нет (открытая этикетка)
Оружие и интервенции
Группа участников / Армия |
Вмешательство/лечение |
|---|---|
|
Активный компаратор: Angiotensin II
Angiotensin II will be continued for 24 hours and then discontinued, and SOC vasopressors resumed according to institutional practices.
|
2.5 mg/mL
Другие имена:
|
|
Без вмешательства: Standard of Care
Fixed-dose vasopressin and standard of care vasopressors increased as per institutional guidelines according to MAP targets.
|
Что измеряет исследование?
Первичные показатели результатов
Мера результата |
Мера Описание |
Временное ограничение |
|---|---|---|
|
Change in arterial elastance
Временное ограничение: 6 hours
|
Change in arterial elastance will be measure by echocardiography at baseline, 6 hours and 24 hours.
Dynamic arterial elastance will be calculated as the ratio between pulse pressure variation and stroke volume variation obtained from arterial line waveform.
|
6 hours
|
|
Change in arterial elastance
Временное ограничение: 24 hours
|
Change in arterial elastance will be measure by echocardiography at baseline, 6 hours and 24 hours.
Dynamic arterial elastance will be calculated as the ratio between pulse pressure variation and stroke volume variation obtained from arterial line waveform.
|
24 hours
|
Вторичные показатели результатов
Мера результата |
Мера Описание |
Временное ограничение |
|---|---|---|
|
Change in arterial ventricular coupling
Временное ограничение: 6 hours
|
Change in arterial ventricular coupling will be measured by echocardiogram at baseline, 6 hours and 24 hours.
The ventricular-arterial coupling will be assessed using previously validated method where Left ventricular end-systolic elastance will be calculated by a modified single-beat method employing systolic and diastolic pressure from the arterial line, echo-Doppler stroke volume (SV), echo-derived ejection fraction (EF) and an estimated normalized ventricular elastance at arterial end-diastole (E(Nd)): E(es(sb)) = [P(d) - (E(Nd(est)) x P(s) x 0.9)[/(E(Nd(est)) x SV).
|
6 hours
|
|
Change in arterial ventricular coupling
Временное ограничение: 24 hours
|
Change in arterial ventricular coupling will be measured by echocardiogram at baseline, 6 hours and 24 hours.
The ventricular-arterial coupling will be assessed using previously validated method where Left ventricular end-systolic elastance will be calculated by a modified single-beat method employing systolic and diastolic pressure from the arterial line, echo-Doppler stroke volume (SV), echo-derived ejection fraction (EF) and an estimated normalized ventricular elastance at arterial end-diastole (E(Nd)): E(es(sb)) = [P(d) - (E(Nd(est)) x P(s) x 0.9)[/(E(Nd(est)) x SV).
|
24 hours
|
|
Change in norepinephrine equivalent dose
Временное ограничение: 6 hours
|
The change in norepinephrine equivalent dose at (6 hours and 24 hours) using the following formula6 Norepinephrine dose (µg/kg/min) + epinephrine dose (µg/kg/min) + 1/150 × dopamine dose (µg/kg/min) + 1/10 × phenylephrine dose (µg/kg/min) + 2.5 × vasopressin dose (U/min)
|
6 hours
|
|
Change in norepinephrine equivalent dose
Временное ограничение: 24 hours
|
The change in norepinephrine equivalent dose at (6 hours and 24 hours) using the following formula6 Norepinephrine dose (µg/kg/min) + epinephrine dose (µg/kg/min) + 1/150 × dopamine dose (µg/kg/min) + 1/10 × phenylephrine dose (µg/kg/min) + 2.5 × vasopressin dose (U/min)
|
24 hours
|
|
Change in renal perfusion index
Временное ограничение: 6 hours
|
Improvement in renal perfusion index (Renal Resistive index) at (6 hours and 24 hours). The Doppler-based renal restrictive index (RI) will be used for measurement using spectral Doppler at the arcuate arteries or interlobar arteries. The formula for calculating the RI is: RI = (Peak Systolic Velocity - End Diastolic Velocity) / Peak Systolic Velocity. The normal range for the RI is 0.50 to 0.70, and elevated values are associated with poorer prognosis in various renal disorders and renal transplant outcomes. |
6 hours
|
|
Change in renal perfusion index
Временное ограничение: 24 hours
|
Improvement in renal perfusion index (Renal Resistive index) at (6 hours and 24 hours). The Doppler-based renal restrictive index (RI) will be used for measurement using spectral Doppler at the arcuate arteries or interlobar arteries. The formula for calculating the RI is: RI = (Peak Systolic Velocity - End Diastolic Velocity) / Peak Systolic Velocity. The normal range for the RI is 0.50 to 0.70, and elevated values are associated with poorer prognosis in various renal disorders and renal transplant outcomes. |
24 hours
|
|
Evaluation of 28 day renal replacement therapy free survival
Временное ограничение: 28 days after hospital discharge
|
The number of days alive free of renal-replacement therapy at 28 days
|
28 days after hospital discharge
|
|
Change in Renin levels
Временное ограничение: 24 hours
|
A blood sample will be obtained at two time points. The first sample will be obtained when the participant is randomized but before infusion in initiated. The second sample will be obtained at 24 hours after the initiation of the drug. Plasma Renin Activity (PRA) is measured in ng/mL/h. |
24 hours
|
|
Change in Angiotension II levels
Временное ограничение: 24 hours
|
A blood sample will be obtained at two time points. The first sample will be obtained when the participant is randomized but before infusion in initiated. The second sample will be obtained at 24 hours after the initiation of the drug. Angiotensin II will be expressed in ng/dL. |
24 hours
|
|
Change in Microcirculation
Временное ограничение: 6 hours
|
Tissue oxygen saturation (StO₂) will be measured using near-infrared spectroscopy (NIRS) at the thenar eminence.
Microvascular reactivity will be assessed using a vascular occlusion test (VOT).
Dynamic variables derived from the VOT will include baseline StO₂, minimum StO₂ during occlusion, and reperfusion slope.
|
6 hours
|
|
Change in Microcirculation
Временное ограничение: 24 hours
|
Tissue oxygen saturation (StO₂) will be measured using near-infrared spectroscopy (NIRS) at the thenar eminence.
Microvascular reactivity will be assessed using a vascular occlusion test (VOT).
Dynamic variables derived from the VOT will include baseline StO₂, minimum StO₂ during occlusion, and reperfusion slope.
|
24 hours
|
Соавторы и исследователи
Спонсор
Соавторы
Следователи
- Главный следователь: Siddharth Dugar, M.D., The Cleveland Clinic
Даты записи исследования
Изучение основных дат
Начало исследования (Действительный)
Первичное завершение (Оцененный)
Завершение исследования (Оцененный)
Даты регистрации исследования
Первый отправленный
Впервые представлено, что соответствует критериям контроля качества
Первый опубликованный (Действительный)
Обновления учебных записей
Последнее опубликованное обновление (Действительный)
Последнее отправленное обновление, отвечающее критериям контроля качества
Последняя проверка
Дополнительная информация
Термины, связанные с этим исследованием
Дополнительные соответствующие термины MeSH
- Урогенитальные заболевания
- Патологические процессы
- Мужские мочеполовые заболевания
- Заболевания почек
- Урологические заболевания
- Женские урогенитальные заболевания
- Женские мочеполовые заболевания и осложнения беременности
- Инфекции
- Сепсис
- Синдром системного воспалительного ответа
- Воспаление
- Почечная недостаточность
- Шок
- Патологические состояния, признаки и симптомы
- Острое повреждение почек
- Фиброз
- Шок, септик
- Джапреза
- angiotensin II, Phe(4)-
Другие идентификационные номера исследования
- 24-913
Планирование данных отдельных участников (IPD)
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Совместное использование IPD Поддерживающий тип информации
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- МКФ
- АНАЛИТИЧЕСКИЙ_КОД
- КСО
Информация о лекарствах и устройствах, исследовательские документы
Изучает лекарственный продукт, регулируемый FDA США.
Изучает продукт устройства, регулируемый Управлением по санитарному надзору за качеством пищевых продуктов и медикаментов США.
продукт, произведенный в США и экспортированный из США.
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