Estimation of P0.1 Using Ultrasound Indexes of Diaphragm Function (PoccUS)
Estimation of Airway Occlusion Pressure at 100 ms Using Ultrasound Indexes of Diaphragm Function
Occlusion pressure at 100 ms (P0.1) is a reliable and non-invasive index of inspiratory drive that can be measured easily on most ventilator. Unfortunately, P0.1 cannot be measured reliably in non-intubated patients. In those receiving non-invasive ventilation, the measurement of P0.1 might be inaccurate due to leaks. P0.1 cannot be measured at all in patients receiving high-flow nasal canulae (HFNC).
Ultrasound indices of diaphragm contractile function, namely diaphragm excursion, velocity and thickening fraction, could be reliable and non-invasive proxies of respiratory drive in non-intubated patient.
Our hypothesis is that ultrasound indices of diaphragm function may reliably estimate P0.1. To validate this hypothesis, theses indices will be measured simultaneously with P0.1 in intubated patients, during diaphragm loading conditions similar to spontaneous breathing: the spontaneous breathing trial (SBT). The SBT is used to evaluate if patients can breathe without the assistance provided by the ventilator, and thus, be weaned from mechanical ventilation.
Tutkimuksen yleiskatsaus
Tila
Tila
Ehdot
Ehdot
Interventio / Hoito
Interventio / Hoito
Opintotyyppi
Opintotyyppi
Ilmoittautuminen (Arvioitu)
Ilmoittautuminen
Osallistumiskriteerit
Kelpoisuusvaatimukset
Kelpoisuusvaatimukset
Opintokelpoiset iät
- Aikuinen
- Vanhempi Aikuinen
Hyväksyy terveitä vapaaehtoisia
Näytteenottomenetelmä
Tutkimusväestö
Kuvaus
Inclusion Criteria:
- - Age ≥ 18 years old
- Patient intubated or tracheostomized
- Decision by the clinician in charge to initiate a SBT
- After information, the patient or next of kind did not refuse to participate (according to the French law, written informed consent is waived)
Exclusion Criteria:
- - Suspicion of diaphragmatic nerves injury
- Preexisting neuromuscular disease
- Spinal cord injury above C5
- Neuromuscular blockade within last 24 hours
- Body mass index > 40 kg/m2
- Pregnancy or breast feeding
- Patient under legal protection
Opintosuunnitelma
Miten tutkimus on suunniteltu?
Suunnittelun yksityiskohdat
Mitä tutkimuksessa mitataan?
Ensisijaiset tulostoimenpiteet
Ensisijaiset tulostoimenpiteet
Tulosmittaus |
Toimenpiteen kuvaus |
Aikaikkuna |
|---|---|---|
|
P0.1 and Peak contraction velocity 5 minutes after the initiation of the SBT
Aikaikkuna: 5 minutes after the initiation of the SBT
|
Airway occlusion pressure measured 100 ms after the initiation of the inspiration, compared to peak contraction velocity of the diaphragm, measured by subcostal ultrasound in TDI-mode
|
5 minutes after the initiation of the SBT
|
Toissijaiset tulostoimenpiteet
Toissijaiset tulostoimenpiteet
Tulosmittaus |
Toimenpiteen kuvaus |
Aikaikkuna |
|---|---|---|
|
P0.1 and EXdi
Aikaikkuna: Immediately after the initiation of the SBT then 5, 10, 15, 20, 25 and 30 minutes after the initiation of the SBT
|
Airway occlusion pressure measured 100 ms after the initiation of the inspiration, compared to maximal excursion of the diaphragm, measured by subcostal ultrasound in M-mode
|
Immediately after the initiation of the SBT then 5, 10, 15, 20, 25 and 30 minutes after the initiation of the SBT
|
|
P0.1 and Peak contraction velocity
Aikaikkuna: Immediately after the initiation of the SBT then 10, 15, 20, 25 and 30 minutes after the initiation of the SBT
|
Airway occlusion pressure measured 100 ms after the initiation of the inspiration, compared to peak contraction velocity of the diaphragm, measured by subcostal ultrasound in TDI-mode
|
Immediately after the initiation of the SBT then 10, 15, 20, 25 and 30 minutes after the initiation of the SBT
|
|
P0.1 and EXdi,0.1
Aikaikkuna: Immediately after the initiation of the SBT then 10, 15, 20, 25 and 30 minutes after the initiation of the SBT
|
Airway occlusion pressure measured 100 ms after the initiation of the inspiration, compared to excursion of the diaphragm measured 100 ms after the beginning of the inspiration, measured by subcostal ultrasound in M-mode
|
Immediately after the initiation of the SBT then 10, 15, 20, 25 and 30 minutes after the initiation of the SBT
|
|
P0.1 and Velocity Time Integral
Aikaikkuna: Immediately after the initiation of the SBT then 10, 15, 20, 25 and 30 minutes after the initiation of the SBT
|
Airway occlusion pressure measured 100 ms after the initiation of the inspiration, compared to velocity time integral of the diaphragm, measured by subcostal ultrasound in TDI-mode
|
Immediately after the initiation of the SBT then 10, 15, 20, 25 and 30 minutes after the initiation of the SBT
|
|
P0.1 and Peak relaxation velocity
Aikaikkuna: Immediately after the initiation of the SBT then 10, 15, 20, 25 and 30 minutes after the initiation of the SBT
|
Airway occlusion pressure measured 100 ms after the initiation of the inspiration, compared to peak relaxation velocity of the diaphragm, measured by subcostal ultrasound in TDI-mode
|
Immediately after the initiation of the SBT then 10, 15, 20, 25 and 30 minutes after the initiation of the SBT
|
|
P0.1 and Peak relaxation rate
Aikaikkuna: Immediately after the initiation of the SBT then 10, 15, 20, 25 and 30 minutes after the initiation of the SBT
|
Airway occlusion pressure measured 100 ms after the initiation of the inspiration, compared to peak relaxation rate of the diaphragm, measured by subcostal ultrasound in TDI-mode
|
Immediately after the initiation of the SBT then 10, 15, 20, 25 and 30 minutes after the initiation of the SBT
|
|
P0.1 and TFdi
Aikaikkuna: Immediately after the initiation of the SBT then 10, 15, 20, 25 and 30 minutes after the initiation of the SBT
|
Airway occlusion pressure measured 100 ms after the initiation of the inspiration, compared to thickening fraction of the diaphragm, measured by intercostal ultrasound in M-mode.
|
Immediately after the initiation of the SBT then 10, 15, 20, 25 and 30 minutes after the initiation of the SBT
|
|
P0.1 and mean thickening velocity
Aikaikkuna: Immediately after the initiation of the SBT then 10, 15, 20, 25 and 30 minutes after the initiation of the SBT
|
Airway occlusion pressure measured 100 ms after the initiation of the inspiration, compared to mean thickening velocity of the diaphragm, measured by intercostal ultrasound in M-mode.
|
Immediately after the initiation of the SBT then 10, 15, 20, 25 and 30 minutes after the initiation of the SBT
|
Yhteistyökumppanit ja tutkijat
Sponsori
Sponsori
Opintojen ennätyspäivät
Opi tärkeimmät päivämäärät
Opiskelun aloitus (Arvioitu)
Opiskelun aloitus
Ensisijainen valmistuminen (Arvioitu)
Ensisijainen valmistuminen
Opintojen valmistuminen (Arvioitu)
Opintojen valmistuminen
Opintoihin ilmoittautumispäivät
Ensimmäinen lähetetty
Ensimmäinen lähetetty
Ensimmäinen toimitettu, joka täytti QC-kriteerit
Ensimmäinen toimitettu, joka täytti QC-kriteerit
Ensimmäinen Lähetetty (Todellinen)
Ensimmäinen Lähetetty
Tutkimustietojen päivitykset
Viimeisin päivitys julkaistu (Todellinen)
Viimeisin päivitys julkaistu
Viimeisin lähetetty päivitys, joka täytti QC-kriteerit
Viimeisin lähetetty päivitys, joka täytti QC-kriteerit
Viimeksi vahvistettu
Viimeksi vahvistettu
Lisää tietoa
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Avainsanat
Muut tutkimustunnusnumerot
Muut tutkimustunnusnumerot
- APHP260589
Yksittäisten osallistujien tietojen suunnitelma (IPD)
Aiotko jakaa yksittäisten osallistujien tietoja (IPD)?
IPD-suunnitelman kuvaus
The procedures carried out with the French data privacy authority (CNIL, Commission nationale de l'informatique et des libertés) do not provide for the transmission of the database, nor do the information and consent documents signed by the patients.
Consultation by the editorial board or interested researchers of individual participant data that underlie the results reported in the article after deidentification may nevertheless be considered, subject to prior determination of the terms and conditions of such consultation and in respect for compliance with the applicable regulations.
IPD-jaon aikakehys
IPD-jaon käyttöoikeuskriteerit
IPD-jakamista tukeva tietotyyppi
- STUDY_PROTOCOL
- ICF
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