Prognostic value of main pulmonary artery diameter to ascending aorta diameter ratio in patients with advanced heart failure

Introduction: An increase in Pulmonary Artery (PA) pressure is associated with an increase in its diameter. Hence, it is necessary to know the normal range of Main Pulmonary Artery Diameter (MPAD). An attempt has been made to know the same among the Indian population. Aim: To determine the normal range of reference values for diameter of Main Pulmonary Artery (MPA) and its relation with Ascending Aorta (AA) in Indian population. Materials and Methods: A prospective cross-sectional study was conducted between October 2018 and September 2019 ((380 males, 120 females) between the age of 30-65 years). Data from the contrast CT scans of thorax of 500 subjects such as those patients with cough under evaluation, suspected lung nodule, chest wall lesions, primary or secondaries in the lung, etc., who visited the Department of Radio-diagnosis, in the Medical College of South India were analysed. Further, healthy population was also defined as those who were free from chronic cardiopulmonary illness in particular with regard to present study, which would affect the diameter of great vessels including that of PA and aorta. MPA and ascending aortic diameters were measured at the level of pulmonary artery bifurcation, viewed at fixed mediastinal window settings. Statistical Package for Social Sciences (SPSS) version 20, inferential statistics like Unpaired-t test were used to test the significant difference for variables between the two groups (males and females). The level of significance was set at 5%. Results: The MPADs of whole population ranged between 15.6-31.6 mm, with mean diameter of 23.08±2.81 mm. Correlation between age and MPAD was statistically significant (p-value <0.001), while sex-specific MPAD was not significant. The mean AA diameter was 27.15±2.6 mm. The mean AA diameter in males was 27.76±3.2 mm, and 26.67±2.0 mm in females with statistical significance (p-value 0.001) between the groups. The diameter ratio of MPA to AA was 0.85. Conclusion: In present study, the normal ranges of diameter of PA and its ratio with AA were defined among Indians. The diameter ratio of MPA to AA appears to be more important, as it tends to normalise the effects of anthropomorphic factors.

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Does Larger Fetal Ascending Aorta Than the Pulmonary Artery Indicate Major Cardiac Anomaly?

Gynecology Obstetrics and Reproductive Medicine ◽

10.21613/gorm.2020.1060 ◽

2020 ◽

pp. 1

Author(s):

Safak Yilmaz Baran ◽

Alev Arslan ◽

Gulsen Dogan Durdag ◽

Hakan Kalayci ◽

Seda Yuksel Simsek ◽

...

Keyword(s):

Pulmonary Artery ◽

Right Ventricle ◽

Pulmonary Valve ◽

Main Pulmonary Artery ◽

Double Outlet Right Ventricle ◽

Ascending Aorta ◽

Pulmonary Valve Stenosis ◽

Chamber View ◽

Aorta Diameter ◽

Pulmonary Artery Diameter

OBJECTIVE: This study investigated the cases in which the fetal ascending aorta is larger than the main pulmonary artery on the three-vessel view and aimed to determine the relationship between the larger ascending aorta and major cardiac anomalies.STUDY DESIGN: Pregnancies between 18-24 gestational weeks who underwent detailed second-trimester screening during 2015-2019 were evaluated. Cases whose fetal ascending aorta diameter was larger than fetal main pulmonary artery diameter on the three-vessel view despite normal four-chamber view were analyzed. Prenatal and postnatal echocardiography studies were performed for each case.RESULTS: Fetal ascending aorta diameter larger than fetal main pulmonary artery diameter on the three-vessel view despite normal four-chamber view was detected in 21 fetuses in a total of 3810 pregnancies (0.55%), and 10 (47.6%) of them had major congenital heart disease. The diagnosis of Tetralogy of Fallot, double outlet right ventricle, ventricular septal defect, pulmonary valve stenosis, and moderate to severe tricuspid regurgitation were confirmed with prenatal/postnatal echocardiography studies. The highest ratio of ascending aorta/main pulmonary artery was 1.4 in a fetus with a double outlet right ventricle and pulmonary valve stenosis.CONCLUSION: The fetal ratio of ascending aorta/main pulmonary artery larger than 1 on the three-vessel view may be a sign of certain cardiac anomalies. Nevertheless, this rate is not an indicator of a serious cardiac defect in all cases. Fetal advanced echocardiography and early postnatal cardiac evaluation should be done to confirm the diagnosis.

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Main Pulmonary Artery–to–Ascending Aorta Diameter Ratio in Healthy Children on MDCT

American Journal of Roentgenology ◽

10.2214/ajr.15.14301 ◽

2015 ◽

Vol 205 (6) ◽

pp. 1322-1325 ◽

Cited By ~ 7

Author(s):

Gregory L. Compton ◽

Joshua Florence ◽

Cathy MacDonald ◽

Shi-Joon Yoo ◽

Tilman Humpl ◽

...

Keyword(s):

Pulmonary Artery ◽

Main Pulmonary Artery ◽

Ascending Aorta ◽

Diameter Ratio ◽

Healthy Children ◽

Aorta Diameter

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The Value of Dual-Source CT in the Diagnosis of Anomalous Origin of Pulmonary Artery

10.21203/rs.3.rs-789587/v1 ◽

2021 ◽

Author(s):

Yusen Feng ◽

Pengcheng Ma ◽

Lijuan Wang ◽

Guifang Sun ◽

Bin Liu ◽

...

Keyword(s):

Pulmonary Artery ◽

Main Pulmonary Artery ◽

Left Pulmonary Artery ◽

Ascending Aorta ◽

Left Main ◽

Descending Aorta ◽

Dual Source ◽

Inner Diameter ◽

The Right ◽

Pulmonary Artery Diameter

Abstract Objective: This study is designed to explore the dual-source computed tomography (DSCT) imaging manifestations of the origin of three rare pulmonary artery abnormalities, and to improve the understanding and diagnosis of the disease.Methods: Collected 30 cases of patients diagnosed by DSCT with pulmonary artery abnormal origins, and retrospectively analyzed their imaging data and postoperative pathological data.Results: Among the 30 patients with abnormal pulmonary artery origin, 16 patients were with unilateral pulmonary artery absence (UAPA), 8 patients were with anomalous origin of unilateral pulmonary artery (AOPA), and 6 patients were left pulmonary artery suspension (LPAS). The diagnosis rate of DSCT is significantly higher than that of echocardiography. The results of DSCT imaging showed that the inner diameter of the ascending aorta, the aortic arch and the descending aorta of UAPA patients were significantly larger than those of LPAS patients (P<0.05). Compared with AOPA patients, the left pulmonary artery diameter, the ratio of the left main pulmonary artery diameter to the main pulmonary artery diameter, and ratio of the left main pulmonary artery diameter to the right main pulmonary artery diameter were significantly increased in UAPA patients (P<0.05). There was no significant difference in the ratio of the inner diameter of the ascending aorta to the descending aorta in patients with UAPA, AOPA and LPAS. Compared with UAPA patients, AOPA patients had no significant changes in the inner diameter of the main pulmonary artery, the inner diameter of the right main pulmonary artery, and the ratio of the inner diameter of the right main pulmonary artery to the main pulmonary artery.Conclusion: DSCT can be used to diagnose the origin of pulmonary artery abnormalities and distinguish its types.

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