scholarly journals Anomalous Origin of Left Pulmonary Artery From Ascending Aorta: Embryological Model

2021 ◽  
Author(s):  
Bin Li ◽  
Aijun Liu ◽  
Ming Yang ◽  
Junwu Su
Keyword(s):  
Pulmonary Artery ◽  
Congenital Heart ◽  
Left Subclavian Artery ◽  
Ductus Arteriosus ◽  
Main Pulmonary Artery ◽  
Left Pulmonary Artery ◽  
Ascending Aorta ◽  
Anomalous Origin ◽  
Left Wall ◽  
Heart Malformation

Background Anomalous origin of the left pulmonary artery (ALPA) from the ascending aorta (AA) is a rare congenital heart malformation. Aim To give some of our embryological considerations of ALPA from the AA. Methods We present a patient with ALPA from the AA, right-sided aortic arch, right-sided ductus arteriosus (DA), and aberrant left subclavian artery (LSCA). Results The distal end of ALPA was cut off, the proximal end was sutured, and the distal end was directly anastomosed to the left wall of the main pulmonary artery (MPA). Conclusion The failure of migration and differentiation of cardiac neural crest cells at the fourth and sixth archs result in unilateral arch agenesis or failure of detachment of the left sixth arch from the aortic sac, which form ALPA the AA.

scholarly journals Pulmonary atresia with a ventricular septal defect and left pulmonary artery discontinuity: a case report 

2021 ◽  
Vol 15 (1) ◽  
Author(s):  
Hyun-Hwa Cha ◽  
Hae Min Kim ◽  
Won Joon Seong
Keyword(s):  
Pulmonary Artery ◽  
Subclavian Artery ◽  
Septal Defect ◽  
Left Subclavian Artery ◽  
Ductus Arteriosus ◽  
Main Pulmonary Artery ◽  
Pulmonary Arteries ◽  
Pulmonary Atresia ◽  
Left Pulmonary Artery ◽  
Right Pulmonary Artery

Abstract Background Unilateral pulmonary artery discontinuity is a rare malformation that is associated with other intracardiac abnormalities. Cases accompanied by other cardiac abnormalities are often missed on prenatal echocardiography. The prenatal diagnosis of isolated unilateral pulmonary artery discontinuity can also be delayed. However, undiagnosed this malformation would have an effect on further prognosis. We report our case of a prenatal diagnosis of pulmonary atresia with ventricular septal defect and left pulmonary artery discontinuity. Case presentation A 33-year-old Asian woman visited our institution at 24 weeks of gestation because of suspected fetal congenital heart disease. Fetal echocardiography revealed a small atretic main pulmonary artery giving rise to the right pulmonary artery without bifurcation and the left pulmonary artery arising from the ductus arteriosus originating from the left subclavian artery. The neonate was delivered by cesarean section at 376/7 weeks of gestation. Postnatal echocardiography and multidetector computed tomography showed a right aortic arch, with the small right pulmonary artery originating from the atretic main pulmonary artery and the left pulmonary artery originating from the left subclavian artery. Patency of the ductus arteriosus from the left subclavian artery was maintained with prostaglandin E1. Right ventricular outflow tract reconstruction and pulmonary angioplasty with Gore-Tex graft patch was performed 25th day after birth. Unfortunately, the neonate died because of right heart failure 8 days postoperation. Conclusion There is a possibility that both pulmonary arteries do not arise from the same great artery (main pulmonary artery or common arterial trunk). Therefore, clinicians should check the origin of both pulmonary arteries.

Left hemitruncus with normal right-sided pressures in an adult

2013 ◽  
Vol 24 (5) ◽  
pp. 926-928 ◽  
Author(s):  
Arima Nigam ◽  
Vijay Trehan
Keyword(s):  
Congenital Heart Disease ◽  
Pulmonary Artery ◽  
Right Ventricle ◽  
Rare Case ◽  
Congenital Heart ◽  
Left Pulmonary Artery ◽  
Ascending Aorta ◽  
Anomalous Origin ◽  
Right Pulmonary Artery ◽  
The Right

AbstractHemitruncus is a rare congenital heart disease. Anomalous origin of the left pulmonary artery is not only rare but also pathogenetically different from anomalous origin of the right pulmonary artery from the ascending aorta. In most cases in isolated hemitrucus pressures in the right ventricle and the normally originating pulmonary artery are systemic or suprasystemic. We present a rare case of anomalous origin of the left pulmonary artery from the ascending aorta diagnosed in an adult with normal pressures in the right ventricle and normally originating pulmonary artery. To the best of our knowledge, this unique haemodynamics has never been reported in the literature.

A Comparative Study of the Main Pulmonary Artery and Ascending Aorta Biomechanical Behavior

2011 ◽  
Author(s):  
Bahar Fata ◽  
Elena Galdi ◽  
Michael S. Sacks
Keyword(s):  
Pulmonary Artery ◽  
Mechanical Behavior ◽  
Ductus Arteriosus ◽  
Main Pulmonary Artery ◽  
Blood Flow Rate ◽  
Biomechanical Properties ◽  
Ascending Aorta ◽  
External Diameter ◽  
Blood Flows ◽  
Biomechanical Behavior

During the prenatal period a state of physiologic pulmonary hypertension exists due to the equalization of pressures by the patent ductus arteriosus, resulting in similar wall thickness of the ascending aorta (AA) and main pulmonary artery (MPA). After birth, as the ductus arteriosus closes and pulmonary arterial pressure decreases, attenuation of medial smooth muscle occurs such that the ratio of medial thickness to external diameter decreases from about 25% in fetuses to less than 10% in infants 3 to 6 months of age. After the first year of life, thickness of the MPA is normally less than half that of the adjacent ascending aorta, although the diameters of the two great arteries remain the same relative to one another [1]. During homeostatic conditions, the total pulmonary and systemic blood flows are essentially identical. In spite of their comparable blood flow rate and common embryologic origin, the anatomic characteristics of these two segments of the cardiovascular system differ substantially [2]. Futhremore, both these arteries are affected by many congenital abnormalities and also are subject to hypertension. Knowledge of the normal biomechanical properties of these great arteries is important for surgical treamtment, angioplasty, and tissue engineering. It can also provide insight into the disease processes and is a prerequisite to the study of mechanical behavior during disease conditions. In this study we characterized the biaxial mechanical behavior of both arteries as a function of location, which has not been previously performed in the pulmonary trunk.

Anomalous origin of the left main pulmonary artery from the ascending aorta associated with Digeorge syndrome

1995 ◽  
Vol 75 (17) ◽  
pp. 1294-1295 ◽  
Author(s):  
Hidemi Dodo ◽  
Juan C. Alejos ◽  
Joseph K. Perloff ◽  
Hillel Laks ◽  
Davis C. Drinkwater ◽  
...  
Keyword(s):  
Pulmonary Artery ◽  
Digeorge Syndrome ◽  
Main Pulmonary Artery ◽  
Ascending Aorta ◽  
Anomalous Origin ◽  
Left Main

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

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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