Меню
Идёт набор NCT05185141

Respiratory Variation of Carotid Doppler Peak Velocity (CDPV) for Non-invasive Prediction of Fluid Responsiveness

— Наблюдательное Hemodynamic Instability

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
Это наблюдательное исследование: исследуемое лечение участникам по протоколу не назначают.
Кому может быть актуально
Состояния в реестре: Hemodynamic Instability. Базовые параметры: 18 лет — 80 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
Германия
Следующий шаг
Сохраните исследование, покажите его лечащему врачу и уточните актуальный статус у исследовательского центра. Расходы, документы и поездка →

Не всё понятно в терминах? Прочитайте наш гид для пациентов →

Официальное название

Assessing Respiratory Variation of Carotid Doppler Peak Velocity (CDPV) for Non-invasive Prediction of Fluid Responsiveness During Abdominal Surgery: a Prospective Observational Trial

Обзор

The purpose of this study is to assess respiratory variation of carotid doppler peak velocity (∆CDPV) for prediction of fluid responsiveness during major abdominal surgery.

Подробное описание

Investigating hemodynamic parameters in a group of 19 ICU-patients with septic shock, respiratory variation of carotid doppler peak velocity (∆CDPV) has been shown to be able to predict fluid responsiveness. For patients receiving so called lung protective ventilation with a tidal volume of 6ml/kg ∆CDPV was superior for prediction of fluid responsiveness when compared to other well established parameters such as pulse pressure variation (∆PP).

Likewise in another study ∆CDPV has been shown to be superior to stroke volume variation (∆SV) for prediction of fluid responsiveness in patients with septic shock when ventilated with a tidal volume of ≥8ml/ kg.

All in all respiratory variation of carotid doppler peak velocity (∆CDPV) seems to be a promising parameter for prediction of fluid responsiveness (Yao et al., BMC Anesthesiology 2018). However, so far clinical studies have been conducted only under a small number of patients mainly in the intensive care unit and/ or under highly specific conditions (e.g. cardiac surgery).

If ∆CDPV is able to predict fluid responsiveness with high accuracy intraoperatively remains unknown. The investigators are therefore conducting this prospective monocentric observational trial to evaluate the performance of ∆CDPV during major abdominal surgery and compare it to validated fluid responsiveness monitoring parameters ∆PP and corrected flow time (fTc).

Following IRB-approval and written informed consent 84 patients scheduled for major abdominal surgery will be enrolled in the study. Stroke volume will be monitored by Esophageal Doppler Monitoring (CardioQ-ODM®, Deltex Medical Ltd, Chichester, UK). In case of hypovolemia a fluid bolus of 7 ml/kg ideal body weight will be administered at the discretion of the attending anesthesiologist. Respiratory variation of carotid doppler peak velocity (∆CDPV) will be monitored before and 1 minute after completion of each fluid bolus using an ultrasound device with a common linear array transducer (Philips ClearVue 350, Philips Medizin Systeme GmbH, Boeblingen, Germany).

Первичные конечные точки

  • Change in stroke volume following a fluid bolus. [Срок оценки: Immediately before and 1 minute after completion of each fluid bolus.]

Критерии участия

Критерии включения

  • Age 18-80 years
  • written informed consent
  • scheduled major abdominal surgery

Критерии исключения

  • Age <18 or >80 years
  • pregnancy
  • SIRS or sepsis
  • any kind of cardiac arrhythmia
  • known valve disease
  • known heart failure
  • any kind of known carotid stenosis
  • carotid doppler peak velocity >182 cm/s before baseline measurement (expected stenosis)
  • missing indication for invasive arterial blood pressure monitoring (IBP) not related to the study
  • peripheral artery disease (PAD)
  • BMI > 35 kg/m2
  • intraabdominal hypertension
  • ASA-PSC of 4
  • severe lung disease (e.g. COPD grade 3, fibrosis)
  • esophageal disease of any kind
  • participation in another clinical study

Критерии приведены из реестра в оригинале (на английском). Окончательную оценку соответствия проводит исследовательский центр.

Здоровые добровольцы: Нет

Дизайн исследования

Модель наблюдения
Когортное

Центры проведения

Германия · 1 центр
  • Department of Anesthesiology, Johannes-Gutenberg University Medical Center — Mainz

Публикации

  • Ibarra-Estrada MA, Lopez-Pulgarin JA, Mijangos-Mendez JC, Diaz-Gomez JL, Aguirre-Avalos G. Respiratory variation in carotid peak systolic velocity predicts volume responsiveness in mechanically ventilated patients with septic shock: a prospective cohort study. Crit Ultrasound J. 2015 Dec;7(1):29. doi: 10.1186/s13089-015-0029-1. Epub 2015 Jun 26. PMID 26123610
  • Lu N, Xi X, Jiang L, Yang D, Yin K. Exploring the best predictors of fluid responsiveness in patients with septic shock. Am J Emerg Med. 2017 Sep;35(9):1258-1261. doi: 10.1016/j.ajem.2017.03.052. Epub 2017 Mar 22. PMID 28363617
  • Yao B, Liu JY, Sun YB. Respiratory variation in peripheral arterial blood flow peak velocity to predict fluid responsiveness in mechanically ventilated patients: a systematic review and meta-analysis. BMC Anesthesiol. 2018 Nov 13;18(1):168. doi: 10.1186/s12871-018-0635-0. PMID 30424730

Идентификаторы

NCT: NCT05185141 · 21-02546

Первоисточники (государственные реестры)

Открыть это исследование на ClinicalTrials.gov ↗