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Correlation Between CT Pulmonary Angiography Metrics and Right Heart Catheterization Parameters in Pre-Capillary Pulmonary Hypertension

NCT07667595 · Status: NOT_YET_RECRUITING · Type: OBSERVATIONAL · Enrollment: 60

Last updated 2026-06-25

No results posted yet for this study

Summary

Pulmonary hypertension (PH) is a hemodynamic and pathophysiological condition defined by a mean pulmonary artery pressure (mPAP) greater than 20 mmHg at rest, as confirmed by right heart catheterization (RHC) (1). The global prevalence of PH is estimated at approximately 1% of the adult population, rising to 10% or more in individuals over 65 years of age.Pre-capillary pulmonary hypertension, which includes pulmonary arterial hypertension (PAH) and chronic thromboembolic pulmonary hypertension (CTEPH), is characterized by a pulmonary arterial wedge pressure (PAWP) ≤15 mmHg and an elevated pulmonary vascular resistance (PVR) ≥2 Wood units (2)

Computed tomography pulmonary angiography (CTPA) is routinely performed in the diagnostic workup of PH and offers a non invasive alternative that can generate multiple quantitative metrics from a single scan (3). Traditional CTPA metrics, including main pulmonary artery diameter (MPAd), the ratio of MPAd to ascending aortic diameter, central pulmonary arteries, and right ventricular to left ventricular diameter (RV/LV ratio) were previously studied in PH patients (4,5,6) Most existing studies have evaluated CTPA metrics in isolation or within single PH subgroups, limiting generalizability across the broader pre-capillary PH population (7).

Therefore, this study aims to systematically investigate the correlation between multiple quantitative CTPA metrics and key invasive hemodynamic parameters derived from RHC in patients with confirmed pre-capillary pulmonary hypertension

Conditions

Interventions

OTHER

right heart catheter

. Right Heart Catheterization : All right heart catheterization procedures will be performed in the Cardiac Catheterization Laboratory at Assiut University Hospital by an accredited cardiologist or chest physician with dedicated PH catheterization experience. The procedure will be conducted in accordance with the 2022 ESC/ERS Guidelines on PH. Equipment * 7-French balloon-tipped thermodilution Swan-Ganz catheter. * Multi-channel pressure transducer system, zeroed at mid-axillary line at the level of the right atrium. * Continuous ECG, SpO₂, and non-invasive blood pressure monitoring throughout. * Fluoroscopy with stored images confirming catheter position at RA, RV, PA, and PAWP RHC Hemodynamic Parameters: Right atrial pressure, Right Ventricular Pressure - systolic (RVSP), Right Ventricular End-Diastolic Pressure (RVEDP), Pulmonary Arterial Pressure - systolic (sPAP), Pulmonary Arterial Pressure - diastolic (dPAP), Mean Pulmonary Arterial Pressure (mPAP), Pulmonary Arterial Wedge Pre

Sponsors & Collaborators

  • Assiut University

    lead OTHER

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2026-06-30
Primary Completion
2026-06-30
Completion
2026-07-30

Countries

  • Egypt

Study Locations

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Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07667595 on ClinicalTrials.gov