- ICH GCP
- US Clinical Trials Registry
- Klinisk forsøg NCT07600931
Assessment of LVOT VTI in Healthy Volunteers
Reproducibility, Intra- and Inter-Observer Variability of Bedside Cardiac Ultrasound Measurements in the Assessment of Hemodynamic Parameters in Healthy Volunteers
Studieoversigt
Status
Intervention / Behandling
Detaljeret beskrivelse
VTI is an echocardiographic parameter used to assess a patient's hemodynamic status. VTI reflects the distance traveled by blood ejected from the left ventricle during systole, enabling non-invasive estimation of key circulatory parameters, including stroke volume (SV) and cardiac output (CO).
Evidence suggests that even brief training combined with expert supervision allows novice operators to obtain measurements comparable to those of experienced clinicians, indicating a steep learning curve.
In this study, operators with minimal training will perform transthoracic echocardiography and measure LVOT VTI (in cm) in healthy volunteers. These measurements will subsequently be compared with those obtained by an experienced operator.
Aim: To assess the equivalence of LVOT VTI measurements obtained by minimally trained operators compared with those acquired by expert operators, as well as to evaluate inter-operator variability among participants. The findings may support the development and optimization of training programs for physicians in point-of-care echocardiography.
Undersøgelsestype
Tilmelding (Anslået)
Kontakter og lokationer
Studiesteder
-
-
-
Warsaw, Polen
- Rekruttering
- Medical University of Warsaw
-
Kontakt:
- Medical University of Warsaw
- Telefonnummer: 48 22 599 2002
- E-mail: julia.mazurek@uckwum.pl
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Kontakt:
- Julia Trzebicka
-
-
Deltagelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
- Voksen
- Ældre voksen
Tager imod sunde frivillige
Prøveudtagningsmetode
Studiebefolkning
Beskrivelse
Inclusion Criteria:
- Age > 18 years,
- Medical student at Medical University of Warsaw or licensed physician.
Exclusion Criteria:
- Age < 18 years,
- Prior experience in performing cardiac ultrasound examinations, including acquisition of apical five- and three-chamber views and Doppler measurements of LVOT VTI.
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
Kohorter og interventioner
Gruppe / kohorte |
Intervention / Behandling |
|---|---|
|
Operator without experience in cardiac ultrasound examinations
Medical student at Medical University of Warsaw or licensed physician
|
After brief training, operators will measure Velocity-Time Integral (in cm) of Left Ventricular Outflow Tract Obstruction in healthy volunteers.
|
Hvad måler undersøgelsen?
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Agreement between VTI measurements obtained by study participants and those obtained by an experienced operator.
Tidsramme: Day 2
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Assessment using correlation coefficient, the intraclass correlation coefficient (ICC), and Bland-Altman analysis.
|
Day 2
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Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Assessment of inter-observer variability (inter-operator variability) of VTI measurements performed by fellows.
Tidsramme: Day 2
|
Assessment using correlation coefficient, the intraclass correlation coefficient (ICC), and Bland-Altman analysis.
|
Day 2
|
|
Assessment of intra-observer variability (intra-operator variability) of VTI measurements.
Tidsramme: Day 2
|
Assessment using correlation coefficient, the intraclass correlation coefficient (ICC), and Bland-Altman analysis.
|
Day 2
|
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Assessment of time required to obtain a VTI measurement by participants.
Tidsramme: Day 2
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Time (in minutes and seconds) from probe placement to successful acquisition of a valid VTI measurement.
|
Day 2
|
Samarbejdspartnere og efterforskere
Sponsor
Efterforskere
- Ledende efterforsker: Julia Trzebicka, MD, Medical University of Warsaw
Datoer for undersøgelser
Studer store datoer
Studiestart (Anslået)
Primær færdiggørelse (Anslået)
Studieafslutning (Anslået)
Datoer for studieregistrering
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først opslået (Faktiske)
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Nøgleord
Andre undersøgelses-id-numre
- KB/75/2026
Plan for individuelle deltagerdata (IPD)
Planlægger du at dele individuelle deltagerdata (IPD)?
Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter
Studerer et amerikansk FDA-reguleret lægemiddelprodukt
Studerer et amerikansk FDA-reguleret enhedsprodukt
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