Titulação de PEEP incremental e decremente por diversas estratégias em assuntos com SDRA: um estudo fisiológico prospectivo (ARDS,PEEP)
Pesquisa sobre precisão Estratégias de ventilação mecânica individualizada para ARDs guiados por monitoramento da tomografia por impedância elétrica e avaliação das diferenças na distribuição de ventilação e perfusão
Visão geral do estudo
Status
Status
Condições
Condições
Intervenção / Tratamento
Intervenção / Tratamento
Tipo de estudo
Tipo de estudo
Inscrição (Real)
Inscrição
Contactos e Locais
Locais de estudo
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Sichuan
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Chengdu, Sichuan, China, 610041
- West China Hospital of Sichuan University, Chengdu
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Critérios de participação
Critérios de elegibilidade
Critérios de elegibilidade
Idades elegíveis para estudo
- Adulto
- Adulto mais velho
Aceita Voluntários Saudáveis
Método de amostragem
População do estudo
Descrição
Critérios de inclusão:
- Pacientes ventilados intubados e mecânicos na UTI dentro de 48 horas
- Ter mais de 18 anos
- Com ards moderado-grave (PAO2 /FIO2, 200 mm HG)
Critérios de exclusão:
- Doenças pulmonares obstrutivas crônicas graves
- Bulla pulmonar (> 1cm) ou pneumotórax ou pneumomediastino ou enfisema subcutâneo
- Gravidez
- IMCM≥35kg/m2
- Suspeita de hemorragia vascular pulmonar
- Perturbação da consciência ou hipertensão intracraniana
- Disfunção cardíaca grave (New York Heart Association Classe III ou IV, síndrome -coronária aguda ou taquiarritmia ventricular persistente), choque cardiogênico ou após grande cirurgia cardíaca
- Instabilidade hemodinâmica (isto é, pressão arterial média [mapa] <60 mm Hg, apesar do uso de vasopressores
- A equipe médica considerando curtos períodos de alta pressão para não ser segura
- Contra -indicações para a colocação de cateteres de pressão esofágica (por exemplo, varix esofágica ou fratura da base do crânio)
- Contra -indicações para o monitoramento do EIT (incluindo marcapasso ou doenças cutâneas que limitam a colocação do eletrodo)
- Estágio agonal ou palcos finais de doenças
Plano de estudo
Como o estudo é projetado?
Detalhes do projeto
O que o estudo está medindo?
Medidas de resultados primários
Medidas de resultados primários
Medida de resultado |
Descrição da medida |
Prazo |
|---|---|---|
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the selected PEEP values
Prazo: through study completion, an average of 1 year
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1. Method-specific selected PEEP values
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through study completion, an average of 1 year
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Medidas de resultados secundários
Medidas de resultados secundários
Medida de resultado |
Descrição da medida |
Prazo |
|---|---|---|
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SpO2/FiO2 at each selected PEEP
Prazo: baseline, within 5 minutes after the PV-tool measurement, and within 5 minutes after each increment and decrement of PEEP during the PEEP adjustment process
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SpO2/FiO2 measured at each selected PEEP.
This study will separately measure peripheral oxygen saturation (SpO₂, unit: %) and fraction of inspired oxygen (FiO₂, unit: %).
Because both measurements share the same unit (%), they will not be reported as separate outcome measures.
Instead, they will be aggregated into a single reported value: the SpO₂/FiO₂ ratio (dimensionless).
At each selected positive end-expiratory pressure (PEEP) level, the ratio will be calculated as S/F = SpO₂ (%) ÷ FiO₂ (%), and this ratio will be recorded as the final outcome measure.
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baseline, within 5 minutes after the PV-tool measurement, and within 5 minutes after each increment and decrement of PEEP during the PEEP adjustment process
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respiratory system compliance value at each selected PEEP
Prazo: baseline, within 5 minutes after the PV-tool measurement, and within 5 minutes after each increment and decrement of PEEP during the PEEP adjustment process
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This study will directly record the respiratory system compliance value as measured and displayed by the ventilator (unit: mL/cmH₂O) at each selected PEEP.
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baseline, within 5 minutes after the PV-tool measurement, and within 5 minutes after each increment and decrement of PEEP during the PEEP adjustment process
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plateau pressure at each selected PEEP
Prazo: baseline, within 5 minutes after the PV-tool measurement, and within 5 minutes after each increment and decrement of PEEP during the PEEP adjustment process
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At each selected positive end-expiratory pressure (PEEP) level, plateau pressure will be directly recorded from the ventilator after performing an inspiratory hold maneuver.
This value is displayed by the ventilator in cmH₂O
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baseline, within 5 minutes after the PV-tool measurement, and within 5 minutes after each increment and decrement of PEEP during the PEEP adjustment process
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Driving Pressure at each selected PEEP
Prazo: baseline, within 5 minutes after the PV-tool measurement, and within 5 minutes after each increment and decrement of PEEP during the PEEP adjustment process
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At each selected positive end-expiratory pressure (PEEP) level, plateau pressure (Pplat, unit: cmH₂O) will be measured via the ventilator, and the corresponding PEEP value (unit: cmH₂O) will be recorded.
Driving pressure (ΔP) is calculated as the difference between the two: ΔP = Pplat - PEEP (unit: cmH₂O).
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baseline, within 5 minutes after the PV-tool measurement, and within 5 minutes after each increment and decrement of PEEP during the PEEP adjustment process
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End-inspiratory Transpulmonary Pressure (PTPi) at each selected PEEP
Prazo: baseline, within 5 minutes after the PV-tool measurement, and within 5 minutes after each increment and decrement of PEEP during the PEEP adjustment process
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After placement of an esophageal pressure catheter, the ventilator will monitor esophageal pressure (Pes) and airway pressure.
At each selected positive end-expiratory pressure (PEEP) level, an end-inspiratory hold maneuver will be performed.
The end-inspiratory transpulmonary pressure (PTPi) is calculated as the difference between the airway plateau pressure (Pplat) measured during the hold and the corresponding esophageal pressure (Pes): PTPi = Pplat - Pes (unit: cmH₂O).
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baseline, within 5 minutes after the PV-tool measurement, and within 5 minutes after each increment and decrement of PEEP during the PEEP adjustment process
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End-expiratory Transpulmonary Pressure (PTPe) at each selected PEEP
Prazo: baseline, within 5 minutes after the PV-tool measurement, and within 5 minutes after each increment and decrement of PEEP during the PEEP adjustment process
|
After placement of an esophageal pressure catheter, the ventilator will monitor esophageal pressure (Pes) and airway pressure.
At each selected positive end-expiratory pressure (PEEP) level, an end-expiratory hold maneuver will be performed.
The end-inspiratory transpulmonary pressure (PTPe) is calculated as the difference between the PEEP measured during the hold and the corresponding esophageal pressure (Pes): PTPe = PEEP - Pes (unit: cmH₂O).
This calculated value is the single reported outcome measure
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baseline, within 5 minutes after the PV-tool measurement, and within 5 minutes after each increment and decrement of PEEP during the PEEP adjustment process
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transpulmonary driving pressure at each selected PEEP
Prazo: baseline, within 5 minutes after the PV-tool measurement, and within 5 minutes after each increment and decrement of PEEP during the PEEP adjustment process
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After placement of an esophageal pressure catheter, the ventilator will monitor transpulmonary pressures.
At each selected PEEP level, end-inspiratory transpulmonary pressure (PTPi) and end-expiratory transpulmonary pressure (PTPe) are obtained during inspiratory and expiratory hold maneuvers, respectively.
Both are measured in cmH₂O.
Transpulmonary driving pressure is calculated as the difference: ΔPtp = PTPi - PTPe (unit: cmH₂O).
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baseline, within 5 minutes after the PV-tool measurement, and within 5 minutes after each increment and decrement of PEEP during the PEEP adjustment process
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EIT-derived Regional Ventilation Parameters at each selected PEEP level
Prazo: baseline, within 5 minutes after the PV-tool measurement, and within 5 minutes after each increment and decrement of PEEP during the PEEP adjustment process
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Using electrical impedance tomography (EIT), the lung is divided into four regions of interest (ROI I to ROI IV) from ventral to dorsal.
For each ROI, the percentage of tidal impedance variation relative to total tidal impedance variation is recorded (% of total).
unit: cmH₂O
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baseline, within 5 minutes after the PV-tool measurement, and within 5 minutes after each increment and decrement of PEEP during the PEEP adjustment process
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the center of ventilation (COV) at each selected PEEP level
Prazo: baseline, within 5 minutes after the PV-tool measurement, and within 5 minutes after each increment and decrement of PEEP during the PEEP adjustment process
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the center of ventilation (COV) is calculated as the position of the ventilation center along the ventral-dorsal axis, expressed as a percentage (0% = ventral, 100% = dorsal).
this parameter is measured in %
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baseline, within 5 minutes after the PV-tool measurement, and within 5 minutes after each increment and decrement of PEEP during the PEEP adjustment process
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CL HP% (overdistension region) at each selected PEEP level
Prazo: baseline, within 5 minutes after the PV-tool measurement, and within 5 minutes after each increment and decrement of PEEP during the PEEP adjustment process
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Using electrical impedance tomography (EIT),based on regional compliance analysis,CL HP% represent the percentage of lung regions showing a decrease in compliance at high PEEP due to overdistension (unit: %).
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baseline, within 5 minutes after the PV-tool measurement, and within 5 minutes after each increment and decrement of PEEP during the PEEP adjustment process
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CL LP% (collapse region) at selected PEEP
Prazo: baseline, within 5 minutes after the PV-tool measurement, and within 5 minutes after each increment and decrement of PEEP during the PEEP adjustment process
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Using electrical impedance tomography (EIT),based on regional compliance analysis,CL LP% represent the percentage of lung regions showing a decrease in compliance at low PEEP due to collapse (unit: %).
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baseline, within 5 minutes after the PV-tool measurement, and within 5 minutes after each increment and decrement of PEEP during the PEEP adjustment process
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Colaboradores e Investigadores
Patrocinador
Patrocinador
Datas de registro do estudo
Datas Principais do Estudo
Início do estudo (Real)
Início do estudo
Conclusão Primária (Real)
Conclusão Primária
Conclusão do estudo (Real)
Conclusão do estudo
Datas de inscrição no estudo
Enviado pela primeira vez
Enviado pela primeira vez
Enviado pela primeira vez que atendeu aos critérios de CQ
Enviado pela primeira vez que atendeu aos critérios de CQ
Primeira postagem (Real)
Primeira postagem
Atualizações de registro de estudo
Última Atualização Postada (Real)
Última Atualização Postada
Última atualização enviada que atendeu aos critérios de controle de qualidade
Última atualização enviada que atendeu aos critérios de controle de qualidade
Última verificação
Última verificação
Mais Informações
Termos relacionados a este estudo
Outros números de identificação do estudo
Outros números de identificação do estudo
- PEEP Titration
- 2024YFFK0329 (Número de outro subsídio/financiamento: Sichuan Science and Technology Program)
- 2024ZD0530000 (Número de outro subsídio/financiamento: Noncommunicable Chronic Diseases-National Science and Technology Major Project)
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