Related Experiment Video
Updated: Jul 12, 2026

Hemodynamic Characterization of Rodent Models of Pulmonary Arterial Hypertension
Published on: April 11, 2016
Radiological prediction of pulmonary hypertension in chronic obstructive pulmonary disease
Abstract:
A study was undertaken to determine whether measurements of radiological indices from postero-anterior chest X-rays were useful in predicting pulmonary artery hypertension. Measurements of the transhilar (THD) and pulmonary lobar distances (PLD) as well as the width of the descending branch of the right pulmonary artery (DB) were made from X-rays of 100 patients with chronic obstructive pulmonary disease. For these patients the forced expiratory volume in 1 s was 1.2 +/- 0.6 l (group mean +/- SD), the arterial PO2 was 62.2 +/- 14.5 mmHg and the mean pulmonary artery pressure (PAP) was 26.7 +/- 11.9 mmHg. Considerable differences in the measurement of THD and PLD were found between and within observers whereas the measurement of DB was more reproducible. DB was better correlated (r = 0.59, P less than 0.001) with PAP than were THD and PLD. Using a stepwise multiple regression procedure including other physiological variables, it was found that DB and arterial PO2 were the only significant (P less than 0.05) predictors of PAP, together accounting for 48% of the variation in PAP, with DB being the more important predictor.
More Related Videos
Related Concept Videos
Pulmonary Hypertension: Classification and Pathogenesis
There are various classifications for PH, each relating to different underlying causes and also...
Chronic Obstructive Pulmonary Disease-I: Introduction
Chronic Obstructive Pulmonary Disease-IV: Assessement and Diagnostic Studies
Medical History
Radiological Investigation III: Pulmonary Angiogram and PET Scan
Pulmonary Angiogram
A Pulmonary Angiogram is an invasive procedure involving injecting a contrast medium through a catheter threaded into the pulmonary artery or the right side of the heart to visualize the pulmonary vasculature. Computed Tomography (CT) scans have mainly replaced this...
Imaging Studies for Cardiovascular System III: X-Ray
Definition and Purpose
An X-ray, or radiograph, is a non-invasive method that uses ionizing radiation to take images of internal structures. It is mainly used in cardiac imaging to examine the heart, lungs, and major blood vessels, aiming to identify abnormalities in the heart's size, shape, and position, such as heart failure, congenital defects, and vascular...
Chronic Obstructive Pulmonary Disease III: Chronic Bronchitis Features

