Aortic Stenosis Pre-Transcatheter Aortic Valve Replacement (TAVR) Procedure CT Scan
Diagnostic Image Quality and Safety of Low-Volume, Low-Concentration, Iso-Osmolar Contrast Medium in the Computed Tomographic Workup of Patients Considered for TAVR
Studieoversigt
Status
Status
Betingelser
Betingelser
Intervention / Behandling
Intervention / Behandling
Detaljeret beskrivelse
Undersøgelsestype
Undersøgelsestype
Tilmelding (Faktiske)
Tilmelding
Fase
Fase
- Ikke anvendelig
Kontakter og lokationer
Studiesteder
-
-
South Carolina
-
Charleston, South Carolina, Forenede Stater, 29425
- Medical University of South Carolina
-
-
Deltagelseskriterier
Berettigelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
Tager imod sunde frivillige
Køn, der er berettiget til at studere
Beskrivelse
Inclusion Criteria:
- Subject must be 18-90 years of age.
- Subject must have been referred for a clinically indicated CT prior to TAVR.
- Subject must provide written informed consent prior to any study-related procedures being performed.
- Subject must be willing to comply with all clinical study procedures.
Exclusion Criteria:
Subject is a pregnant or nursing female. Exclude the possibility of pregnancy:
- By testing (serum or urine βHCG) within 24 hours before contrast agent administration, or
- By surgical sterilization, or
- Post menopausal, with minimum one (1) year history without menses.
- Subject has an acute psychiatric disorder or is cognitively impaired.
- Subject is using or is dependent on substances of abuse.
- Subject is unwilling to comply with the requirements of the protocol.
- Subject has previously entered this study.
- Subject has an allergy against iodinated contrast agents.
- Subject is in acute unstable condition.
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Diagnostisk
- Tildeling: N/A
- Interventionel model: Enkelt gruppeopgave
- Maskning: Ingen (Åben etiket)
Antal våben
Våben og indgreb
Deltagergruppe / ArmDeltagergruppe / Arm |
Intervention / BehandlingIntervention / Behandling |
|---|---|
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Eksperimentel: Low-volume, Low-concentration contrast (Visipaque 270) CT scan
An ECG-synchronized, contrast-medium enhanced CT study of the heart for the evaluation of the aortic root complex and general cardiac morphology will be obtained.
This is immediately followed by a CT angiographic study of the chest, abdomen, and pelvis (beyond the femoral heads), which utilizes the same contrast bolus that is injected for evaluating the heart.
This latter vascular study serves to evaluate the TAVR deployment catheter access route through the femoral, iliac, and aortic vascular stations.
In clinical routine, we have been performing this type of study with total contrast media volumes ranging from 40-120 mL of iodinated contrast material.
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An ECG-synchronized, contrast-medium enhanced CT study of the heart for the evaluation of the aortic root complex and general cardiac morphology will be obtained.
This is immediately followed by a CT angiographic study of the chest, abdomen, and pelvis (beyond the femoral heads), which utilizes the same contrast bolus that is injected for evaluating the heart.
This latter vascular study serves to evaluate the TAVR deployment catheter access route through the femoral, iliac, and aortic vascular stations.
In clinical routine, we have been performing this type of study with total contrast media volumes ranging from 40-120 mL of iodinated contrast material.
|
Hvad måler undersøgelsen?
Primære resultatmål
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Clinically Diagnostic CT Assessments
Tidsramme: up to 2 years
|
Determine that restricting the contrast media volume to 60ml of 270 mgI/ml iodixanol or less generates clinically diagnostic CT assessments prior to TAVR.
|
up to 2 years
|
Sekundære resultatmål
Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Image Quality
Tidsramme: up to 2 years
|
Measure contrast media attenuation and determine diagnostic image quality within target structures in the aortic root and the ilio-aortic access route.
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up to 2 years
|
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Safety
Tidsramme: up to 2 years
|
Evaluate safety and 30-day outcome of patients regarding survival, renal function, and adverse events (renal failure, dialysis, general morbidity).
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up to 2 years
|
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Long-term Follow-Up
Tidsramme: up to 4 years
|
Determine procedural outcome of the TAVR procedure by longer-term patient follow-up after one and two years for device function, position, and paravalvular leakage.
|
up to 4 years
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Samarbejdspartnere og efterforskere
Sponsor
Sponsor
Samarbejdspartnere
Samarbejdspartnere
Efterforskere
Efterforskere
- Ledende efterforsker: Joseph Schoepf, MD, Medical University of South Carolina
Datoer for undersøgelser
Studer store datoer
Studiestart
Studiestart
Primær færdiggørelse (Faktiske)
Primær færdiggørelse
Studieafslutning (Faktiske)
Studieafslutning
Datoer for studieregistrering
Først indsendt
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først indsendt, der opfyldte QC-kriterier
Først opslået (Skøn)
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
Nøgleord
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
Andre undersøgelses-id-numre
- Pro19770
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