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Dynamic Non-invasive Monitoring of Inspiratory Effort

2026년 9월 20일 업데이트: Jacinto Espeleta Hernández, Fundació d'investigació Sanitària de les Illes Balears

Dynamic Analysis of Inspiratory Effort Using Non-invasive Monitoring as a Predictor of Liberation From Invasive Mechanical Ventilation Starting From the Transition Phase to Assisted Spontaneous Ventilation: a Prospective Observational Cohort Study Using Multivariate Joint Modeling and a Bayesian Approach

This prospective, observational cohort study aims to evaluate whether the dynamic monitoring of a patient's breathing effort can predict successful liberation from invasive mechanical ventilation. The study will include 120 patients who have undergone 36 hours or more of controlled mechanical ventilation and deep sedation. Patient monitoring will commence immediately upon their transition to an assisted spontaneous breathing mode with pressure support. Starting from this clinical milestone, the researchers will track the patients' longitudinal inspiratory effort daily through four specific variables: maximum occlusion pressure, muscle pressure index, flow index via visual waveform inspection, and diaphragmatic thickening fraction via ultrasound. Concurrently, ventilator safety parameters (plateau pressure, driving pressure, transpulmonary pressure, and compliance) will be recorded. The primary outcome is the time from PSV initiation to successful weaning (defined as 72 hours without ventilator support). Clinical events such as death or return to a controlled mode due to PSV failure will be statistically treated as competing risks. Secondary outcomes include the incidence of pneumonia, ICU-acquired weakness, delirium, mortality, and PSV failure. Data will be analyzed using multivariate joint modeling within a Bayesian framework.

연구 개요

상태

모병

정황

연구 유형

관찰

등록 (추정된)

120

연락처 및 위치

이 섹션에서는 연구를 수행하는 사람들의 연락처 정보와 이 연구가 수행되는 장소에 대한 정보를 제공합니다.

연구 연락처

이름: Jacinto Espeleta Hernández, MD
전화번호: +34685814532
이메일: jacinto.espeleta@ssib.es

연구 장소

스페인
- Balearic Islands
  - Palma de Mallorca, Balearic Islands, 스페인, 07120
    - 모병
    - Department of Intensive Care Medicine, Hospital Universitario Son Espases
    - 연락하다:
      
      Jacinto Espeleta Hernández, MD
      
      전화번호: +34685814532
      
      이메일: jacinto.espeleta@ssib.es

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

어린이
성인
고령자

건강한 자원 봉사자를 받아들입니다

아니

연구 대상 성별

모두

샘플링 방법

확률 샘플

연구 인구

Adult patients admitted to Intensive Care Unit who require invasive mechanical ventilation due to any cause with 36 hours or more with a controlled mode of mechanical ventilation and deep sedation

설명

Inclusion Criteria:

18 years old or more.
Patients undergoing invasive mechanical ventilation for any cause under a controlled ventilation mode for more than 36 hours.
Attending physician's decision to initiate pressure support ventilation according to standard clinical practice.

Exclusion Criteria:

Pregnancy.
Degenerative neuromuscular disease (e.g., amyotrophic lateral sclerosis, congenital myopathies).
Air leak/fistula that prevents breathing-pause maneuvers.
Diaphragmatic paralysis.
Limitation of life-sustaining treatment in case of weaning failure.
Conditions preventing follow-up up to 72 hours after liberation from mechanical ventilation.
Use of neuromuscular blocking agents within the last 24 hours.

공부 계획

이 섹션에서는 연구 설계 방법과 연구가 측정하는 내용을 포함하여 연구 계획에 대한 세부 정보를 제공합니다.

연구는 어떻게 설계됩니까?

디자인 세부사항

관찰 모델: COHORT
시간 관점: PROSPECTIVE

연구는 무엇을 측정합니까?

주요 결과 측정

결과 측정	측정값 설명	기간
Daily Inspiratory Effort: diaphragmatic thickening fraction. 기간: Measured daily from the initiation of pressure support ventilation until the occurrence of successful liberation from mechanical ventilation, return to a controlled ventilation mode for more than 6 hours, death or tracheostomy, assessed up to 28 days.	Non-invasive monitoring of patient inspiratory effort performed daily starting from the initiation of pressure support ventilation using diaphragmatic thickening fraction measured via ultrasound. Unit of measure: percentage (%).	Measured daily from the initiation of pressure support ventilation until the occurrence of successful liberation from mechanical ventilation, return to a controlled ventilation mode for more than 6 hours, death or tracheostomy, assessed up to 28 days.
Daily Inspiratory Effort: pressure muscle index 기간: Measured daily from the initiation of pressure support ventilation until the occurrence of successful liberation from mechanical ventilation, return to a controlled ventilation mode for more than 6 hours, death or tracheostomy, assessed up to 28 days.	Non-invasive monitoring of patient inspiratory effort performed daily starting from the initiation of pressure support ventilation using the pressure muscle index measured in the mechanical ventilator during an end-inspiratory occlusion maneuver. Unit of measure: centimeters of water	Measured daily from the initiation of pressure support ventilation until the occurrence of successful liberation from mechanical ventilation, return to a controlled ventilation mode for more than 6 hours, death or tracheostomy, assessed up to 28 days.
Daily Inspiratory Effort: maximum occlusion pressure 기간: Measured daily from the initiation of pressure support ventilation until the occurrence of successful liberation from mechanical ventilation, return to a controlled ventilation mode for more than 6 hours, death or tracheostomy, assessed up to 28 days.	Non-invasive monitoring of patient inspiratory effort performed daily starting from the initiation of pressure support ventilation using the maximum occlusion pressure measured in the mechanical ventilator during an end-espiratory occlusion maneuver. Unit of measure: centimeters of water	Measured daily from the initiation of pressure support ventilation until the occurrence of successful liberation from mechanical ventilation, return to a controlled ventilation mode for more than 6 hours, death or tracheostomy, assessed up to 28 days.
Daily Inspiratory Effort: flow index 기간: Measured daily from the initiation of pressure support ventilation until the occurrence of successful liberation from mechanical ventilation, return to a controlled ventilation mode for more than 6 hours, death or tracheostomy, assessed up to 28 days.	Non-invasive monitoring of patient inspiratory effort performed daily starting from the initiation of pressure support ventilation using a qualitative evaluation by analyzing the airway flow waveform on the mechanical ventilator. The profile is categorized daily as positive (presence of effort) or negative (absence of effort). For reporting and analytical purposes, this qualitative assessment is coded as a binary scale where 0 indicates a negative flow index and 1 indicates a positive flow index. Individual daily data trajectories will be analyzed using a Bayesian joint model. Unit of measure: score on a scale, where 0 represents negative flow index and 1 represents a positive flow index	Measured daily from the initiation of pressure support ventilation until the occurrence of successful liberation from mechanical ventilation, return to a controlled ventilation mode for more than 6 hours, death or tracheostomy, assessed up to 28 days.

2차 결과 측정

결과 측정	측정값 설명	기간
incidence of Ventilator-Associated Pneumonia 기간: Measured daily from the initiation of pressure support ventilation until the occurrence of successful liberation from mechanical ventilation, return to a controlled ventilation mode for more than 6 hours, death or tracheostomy, assessed up to 28 days.	proportion of patients who develop ventilator-associated pneumonia based on standard clinical, radiological, and microbiological criteria.	Measured daily from the initiation of pressure support ventilation until the occurrence of successful liberation from mechanical ventilation, return to a controlled ventilation mode for more than 6 hours, death or tracheostomy, assessed up to 28 days.
incidence of Intensive Care Unit-Acquired Weakness 기간: Measured daily from the initiation of pressure support ventilation until the occurrence of successful liberation from mechanical ventilation, return to a controlled ventilation mode for more than 6 hours, death or tracheostomy, assessed up to 28 days.	development of critical illness weakness evaluated via the Medical Research Council score, which evaluates 6 muscle groups bilaterally, ranging from a total score of 0 (no strength) to 60 (normal muscle strength), where higher scores indicate better muscle strength. Intensive Care Unit-Acquired Weakness will be defined as an MRC sum score of 48 or less.	Measured daily from the initiation of pressure support ventilation until the occurrence of successful liberation from mechanical ventilation, return to a controlled ventilation mode for more than 6 hours, death or tracheostomy, assessed up to 28 days.
incidence of delirium 기간: Measured daily from the initiation of pressure support ventilation until the occurrence of successful liberation from mechanical ventilation, return to a controlled ventilation mode for more than 6 hours, death or tracheostomy, assessed up to 28 days.	daily screening for delirium using the Confusion Assessment Method for the Intensive Care Unit, which assesses four features: (1) acute onset or fluctuating course, (2) inattention, (3) altered level of consciousness, and (4) disorganized thinking. Delirium is defined as positive when features 1 and 2, and either feature 3 or 4 are present.	Measured daily from the initiation of pressure support ventilation until the occurrence of successful liberation from mechanical ventilation, return to a controlled ventilation mode for more than 6 hours, death or tracheostomy, assessed up to 28 days.
incidence of mortality 기간: Measured daily from the initiation of pressure support ventilation until the occurrence of successful liberation from mechanical ventilation, return to a controlled ventilation mode for more than 6 hours, death or tracheostomy, assessed up to 28 days.	incidence of death by any cause during the study period (handled as a competing risk in the main analysis).	Measured daily from the initiation of pressure support ventilation until the occurrence of successful liberation from mechanical ventilation, return to a controlled ventilation mode for more than 6 hours, death or tracheostomy, assessed up to 28 days.
Return to controlled mode of mechanical ventilation 기간: Measured daily from the initiation of pressure support ventilation until the occurrence of successful liberation from mechanical ventilation, death or tracheostomy, assessed up to 28 days.	proportion of patients requiring a return to a controlled mechanical ventilation mode due to pressure support ventilation failure before achieving weaning	Measured daily from the initiation of pressure support ventilation until the occurrence of successful liberation from mechanical ventilation, death or tracheostomy, assessed up to 28 days.

공동 작업자 및 조사자

여기에서 이 연구와 관련된 사람과 조직을 찾을 수 있습니다.

스폰서

Fundació d'investigació Sanitària de les Illes Balears

수사관

수석 연구원: Jacinto Espeleta Hernández, MD, Hospital Son Espases

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)

2026년 8월 4일

기본 완료 (추정된)

2027년 8월 30일

연구 완료 (추정된)

2027년 8월 30일

연구 등록 날짜

최초 제출

2026년 9월 15일

QC 기준을 충족하는 최초 제출

2026년 9월 20일

처음 게시됨 (실제)

2026년 9월 24일

연구 기록 업데이트

마지막 업데이트 게시됨 (실제)