ⓘ Double aortic arch
Double aortic arch is a relatively rare congenital cardiovascular malformation. DAA is an anomaly of the aortic arch in which two aortic arches form a complete vascular ring that can compress the trachea and/or esophagus. Most commonly there is a larger right arch behind and a smaller left aortic arch in front of the trachea/esophagus. The two arches join to form the descending aorta which is usually on the left side. In some cases the end of the smaller left aortic arch closes and the vascular tissue becomes a fibrous cord. Although in these cases a complete ring of two patent aortic arches is not present, the term vascular ring’ is the accepted generic term even in these anomalies.
Symptoms associated with compression of the trachea, esophagus, or as a complete vascular ring. The diagnosis can often be suspected or made an x-ray, barium esophagram, or echocardiography. Computed tomography CT or magnetic resonance imaging MRI shows the relationship of the aortic arches to the trachea and esophagus, as well as the degree of narrowing of the trachea. Bronchoscopy may be useful for internal evaluation of the degree of tracheomalacia. Treatment is surgical and is indicated in all symptomatic patients. Currently, the risk of mortality or significant morbidity after surgical division of the small low arch. However, the preoperative degree of tracheomalacia has an important impact on postoperative recovery. In some patients it may take from several months to 1-2 years for the obstructive respiratory symptoms, rales disappear.
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- The aortic arches or pharyngeal arch arteries previously referred to as branchial arches in human embryos are a series of six paired embryological vascular
- Right - sided aortic arch is a rare anatomical variant in which the aortic arch is on the right side rather than on the left. During normal embryonic development
- this is because of persistence of the double aortic arch after the second month of fetal life. The two arches surround the esophagus and trachea which
- Aortic dissection AD occurs when an injury to the innermost layer of the aorta allows blood to flow between the layers of the aortic wall, forcing the
- the pharyngeal arches is known as the aortic arches In fish, the branchial arches support the gills. In vertebrates, the pharyngeal arches are derived from
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- in pharyngeal arches that surround the aortic arch arteries. Other outcomes of aortic arch artery anomalies includes a double aortic arch variable absence
- embryo that connects the ventricles with the aortic sac. Some CNCCs migrate beyond the pharyngeal arches to the cardiac outflow tract. CNCCS in the cardiac
- 9 in They often involve large portions of the ascending and transverse aortic arch the abdominal aorta, or less frequently the iliac arteries. Aneurysms