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The Use of Single-Beat TE-e' in Evaluation of Left Atrial Pressure in Critically Ill Patients: The TELAP-ICU Trial (TELAP-ICU)

9. september 2026 opdateret af: Wincy Wing-Sze Ng, Queen Mary Hospital, Hong Kong
This study evaluates a new single-beat echocardiographic technique (TE-e', the time difference between the onset of the mitral inflow E wave and the septal e' wave on tissue Doppler imaging) for estimating left atrial pressure (LAP) in critically ill patients, comparing it against the standard two-beat method. The goal is to determine whether the faster, single-beat method gives results as reliable as the conventional method, and whether it can help identify patients with elevated left atrial pressure without an invasive procedure.

Studieoversigt

Status

Rekruttering

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

Left atrial pressure (LAP) is an important measure in the care of critically ill patients but usually requires an invasive catheter to assess directly. Echocardiography offers a non-invasive alternative. One promising marker, TE-e' (the time difference between the onset of the mitral inflow E wave and the septal e' wave on tissue Doppler imaging), was recently incorporated into the 2025 American Society of Echocardiography (ASE) diastolic function guidelines. The conventional method for calculating TE-e' requires measurements from two separate heartbeats, introducing potential error from beat-to-beat heart rate variability - a common issue in the critically ill patients. This study assesses a novel single-beat method, in which both waveforms are captured on the same Doppler display within one cardiac cycle, eliminating that source of variability. Patients undergoing clinically indicated transthoracic echocardiography (TTE) in the Adult Intensive Care Unit of Queen Mary Hospital, Hong Kong will have TE-e' measured by both methods, along with other echocardiographic parameters associated with LAP, to evaluate correlation between the two methods and their relationship with clinically assessed LAP.

Undersøgelsestype

Observationel

Tilmelding (Anslået)

50

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiekontakt

Studiesteder

  • Hong Kong
      • Hong Kong, Hong Kong
        • Rekruttering
        • Adult Intensive Care Unit, Queen Mary Hospital
        • Kontakt:

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

  • Voksen
  • Ældre voksen

Tager imod sunde frivillige

Ingen

Prøveudtagningsmetode

Ikke-sandsynlighedsprøve

Studiebefolkning

Patients admitted to Adult Intensive Care Unit requiring a TTE

Beskrivelse

Inclusion Criteria:

  • Adult patients ≥18 years admitted to the QMH Adult Intensive Care Unit (AICU)
  • Requiring a transthoracic echocardiogram (TTE) as part of routine clinical care
  • TE-e' obtainable by both the conventional and the novel method

Exclusion Criteria:

  • Patients <18 years of age
  • Patients in atrial fibrillation
  • Patients with a poor TTE acoustic window
  • Patients in whom TE-e' is technically difficult to obtain or interpret by either method

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

Kohorter og interventioner

Gruppe / kohorte
Intervention / Behandling
Single cohort
each patient serves as their own comparison - conventional vs. novel method measured within the same transthoracic echocardiography study
Diagnostisk test: Echocardiography
Full echocardiogram performed on recruited patients.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Tidsramme
Correlation between novel (single-beat) and conventional (two-beat) TE-e' values
Tidsramme: At the time of index TTE (single time point for each patient) during the course of ICU stay (from day 1 of ICU admission till ICU discharge, up to 1 month)
At the time of index TTE (single time point for each patient) during the course of ICU stay (from day 1 of ICU admission till ICU discharge, up to 1 month)

Sekundære resultatmål

Resultatmål
Tidsramme
Correlation between novel and conventional methods in obtaining septal e' and s' velocities - At time of index TTE
Tidsramme: At the time of index TTE (single time point for each patient) during the course of ICU stay (from day 1 of ICU admission till ICU discharge, up to 1 month)
At the time of index TTE (single time point for each patient) during the course of ICU stay (from day 1 of ICU admission till ICU discharge, up to 1 month)
Correlation between clinical evaluation of LAP and TE-e' value
Tidsramme: At the time of index TTE (single time point for each patient) during the course of ICU stay (from day 1 of ICU admission till ICU discharge, up to 1 month)
At the time of index TTE (single time point for each patient) during the course of ICU stay (from day 1 of ICU admission till ICU discharge, up to 1 month)
Correlation between other echocardiographic parameters of LAP (E/A ratio, LAVi, TR Vmax, lung ultrasound 6-point protocol) and TE-e' value
Tidsramme: At the time of index TTE (single time point for each patient) during the course of ICU stay (from day 1 of ICU admission till ICU discharge, up to 1 month)
At the time of index TTE (single time point for each patient) during the course of ICU stay (from day 1 of ICU admission till ICU discharge, up to 1 month)

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Queen Mary Hospital, Hong Kong

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

1. juli 2026

Primær færdiggørelse (Anslået)

31. december 2026

Studieafslutning (Anslået)

30. juni 2027

Datoer for studieregistrering

Først indsendt

1. september 2026

Først indsendt, der opfyldte QC-kriterier

9. september 2026

Først opslået (Faktiske)

15. september 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

15. september 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

9. september 2026

Sidst verificeret

1. september 2026

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • UW 26-246

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