RDW and RV-PA Coupling in Acute PE
Association Between Admission Red Cell Distribution Width and Right Ventricular-Pulmonary Arterial Coupling in Acute Pulmonary Embolism
Studieoversigt
Status
Status
Betingelser
Betingelser
Intervention / Behandling
Intervention / Behandling
Detaljeret beskrivelse
Consecutive adults admitted via the emergency department or transferred to the participating center with confirmed acute PE will be screened by the study team.
Demographic and clinical
- Age, sex, body mass index and Smoking status.
- Comorbidities: hypertension, diabetes mellitus, coronary artery disease, heart failure, Chronic Obstructive Pulmonary Disease, chronic kidney disease, prior venous thromboembolism, active cancer, recent surgery, recent immobilization, history of COVID -19 infection and vaccination.
- Current medications relevant to erythropoiesis or hemodynamics (ACE inhibitors/ARBs, beta-blockers, diuretics, iron supplementation, erythropoiesis-stimulating agents, anticoagulants on admission).
Laboratory
- Complete blood count: hemoglobin, MCV, MCH, RDW-CV, RDW, white cell count and differential, platelet count, mean platelet volume.
- Renal and hepatic function: creatinine, eGFR, AST, ALT, total bilirubin.
- Cardiac biomarkers: high-sensitivity troponin. 3 Imaging
- CTPA: anatomic location of thrombus (main, lobar, segmental, subsegmental), presence of saddle embolus, RV/LV diameter ratio on axial imaging.
4.Echocardiography
All echocardiograms will follow a standardized acquisition protocol based on the American Society of Echocardiography and European Association of Cardiovascular Imaging recommendations for RV assessment. Key elements:
- Left lateral decubitus position when tolerated; semi-recumbent if dyspneic.
- ECG-gated digital loops of at least three consecutive cardiac cycles for each view.
- Mandatory views: parasternal long-axis and short-axis; apical four-chamber, RV-focused four-chamber, two-chamber, and three-chamber; subcostal four-chamber and IVC.
- M-mode through the lateral tricuspid annulus for TAPSE.
- Continuous-wave Doppler across the tricuspid valve for peak TR velocity (multiple windows attempted; agitated saline contrast may be used to improve TR signal at operator discretion).
- Tissue Doppler at the lateral tricuspid annulus for S'.
- Speckle-tracking acquisition optimized for RV strain (frame rate 50-80 fps). Studies will be acquired on a single ultrasound platform (or ≤2 platforms with documented inter-platform agreement) and analyzed offline using vendor-neutral software where possible. Studies failing image-quality criteria for the primary outcome will be flagged and the participant excluded from the primary analysis
Undersøgelsestype
Undersøgelsestype
Tilmelding (Anslået)
Tilmelding
Kontakter og lokationer
Studiekontakt
Studiekontakt
- Navn: Entsar Hsanen Mohamed, lecturer
- Telefonnummer: +201019968106
- E-mail: entsar.hsanen@aun.edu.eg
Deltagelseskriterier
Berettigelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
- Voksen
- Ældre voksen
Tager imod sunde frivillige
Prøveudtagningsmetode
Studiebefolkning
Beskrivelse
Inclusion Criteria:
Age ≥ 18 years. Acute PE confirmed by computed tomography pulmonary angiogram (CTPA) performed within 24 h of presentation.
CBC obtained within 24 h of admission and before any blood transfusion. Transthoracic echocardiography feasible within 24 h of admission. Written informed consent.
Exclusion Criteria:
- Active hematologic malignancy or recent chemotherapy with myelosuppressive intent.
- Red blood cell transfusion within the preceding 90 days.
- Known hemoglobinopathy (e.g., sickle cell disease, thalassemia major).
- Chronic dialysis or eGFR < 15 mL/min/1.73 m².
- Pre-existing severe pulmonary hypertension (resting mean PAP ≥ 35 mmHg by prior right heart catheterization or echocardiographic PASP ≥ 60 mmHg before this admission), severe left-sided valvular disease, or known severe biventricular dysfunction.
- Hemodynamic instability requiring vasopressors at the time of echocardiography, as their hemodynamics may distort RV-PA coupling estimates.
- Inadequate echocardiographic image quality precluding measurement of TAPSE and a quantifiable TR jet for PASP estimation.
- Inability to provide informed consent.
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
Antal grupper/kohorter
Kohorter og interventioner
Gruppe / kohorteGruppe / kohorte |
Intervention / BehandlingIntervention / Behandling |
|---|---|
|
Acute PE confirmed by computed tomography pulmonary angiogram (CTPA) performed within 24 h
|
All echocardiograms will follow a standardized acquisition protocol based on the American Society of Echocardiography and European Association of Cardiovascular Imaging recommendations for RV assessment. Key elements:
|
Hvad måler undersøgelsen?
Primære resultatmål
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
assess the association between admission red cell distribution width (RDW) and right ventricular-pulmonary arterial coupling, measured by TAPSE/PASP ratio on transthoracic echocardiography performed within 24 hours of admission, in adults with acute PE
Tidsramme: 24 hours
|
To assess the association between admission red cell distribution width (RDW) and right ventricular-pulmonary arterial coupling, measured by the TAPSE/PASP ratio on transthoracic echocardiography performed within 24 h of admission, in adults with acute pulmonary embolism
|
24 hours
|
Samarbejdspartnere og efterforskere
Sponsor
Sponsor
Datoer for undersøgelser
Studer store datoer
Studiestart (Anslået)
Studiestart
Primær færdiggørelse (Anslået)
Primær færdiggørelse
Studieafslutning (Anslået)
Studieafslutning
Datoer for studieregistrering
Først indsendt
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først indsendt, der opfyldte QC-kriterier
Først opslået (Faktiske)
Først opslået
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
Sidste opdatering sendt
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
Andre undersøgelses-id-numre
- RDW and RV-PA Coupling in PE
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
Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .