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ORIGINAL ARTICLE
Year : 2020  |  Volume : 21  |  Issue : 4  |  Page : 263-268

Assessment of pulmonary artery pressures by various doppler echocardiographic parameters and its correlation with cardiac catheterization in patients with pulmonary hypertension


Department of Cardiology, Mahatma Gandhi Medical College and Research Institute, Puducherry, India

Correspondence Address:
Dr. Balasubramaniyan Amirtha Ganesh
Department of Cardiology, 1st Floor, E Block, Mahatma Gandhi Medical College and Research Institute, Puducherry
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/HEARTVIEWS.HEARTVIEWS_133_20

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Background: Measuring pulmonary artery pressures is a routine index in Doppler echocardiography to diagnose, risk stratify, and prognosticate patients with pulmonary hypertension (PH). There are numerous methods in use to measure it in routine clinical practice. Objective: The objective of this study was to assess the correlation between the commonly used Doppler-derived parameters such as tricuspid regurgitation (TR)-derived systolic pulmonary artery pressure (SPAP), pulmonary regurgitation (PR)-derived mean pulmonary artery pressure (MPAP), and right ventricular outflow tract acceleration time (RVOT AcT) with right heart catheterization (RHC) data which are the gold standard. Materials and Methods: In this analytical study, we prospectively measured echo and angiogram parameters such as TR-derived SPAP, PR-derived MPAP, and RVOT AcT and studied its association with RHC data of thirty patients for a span of 2 years. Right ventricular AcT was also included in the study. Their relationship was displayed using Bland–Altman scatter plots. P < 0.05 was considered as statistically significant. Results: Although both TR-derived SPAP and PR-derived MPAP had a moderate correlation with RHC-acquired data, the agreement between them was poor. RVOT AcT showed a strong inverse correlation with invasive MPAP. Conclusion: Among the three Doppler methods that were assessed to measure pulmonary pressures, RVOT AcT had a strong correlation with MPAP. RVOT AcT of <80 ms had a high sensitivity to detect severe PH (defined as MPAP >45 mmHg). Hence, it is recommended to include AcT as a routine measure in the armamentarium of echocardiographic parameters used in patients with PH.


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