• Korea-Australia Rheology Journal
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• v.16 no.2
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• pp.75-83
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• 2004

The purpose of the present study is to investigate fluid mechanical interactions between two major abdominal aortic branches under both steady and pulsatile flow conditions. Two model branching systems are considered: two branches emerging off the same side of the aorta (model 1) and two branches emerging off the opposite sides of the aorta (model 2). At higher Reynolds numbers, the velocity profiles within the branches in model 1 are M-shaped due to the strong skewness, while the loss of momentum in model 2 due to turning effects at the first branch leads to the absence of a reversed flow region at the entrance of the second branch. The wall shear stresses are considerably higher along the anterior wall of the abdominal aorta than along the posterior wall, opposite the celiac-superior mesenteric arteries. The wall shear stresses are higher in the immediate vicinity of the daughter branches. The peak wall shear stress in model 2 is considerably lower than that in the model 1. Although quantitative comparisons of our results with the physiological data have not been possible, our results provide useful information for the localization of early atherosclerotic lesions.

• Journal of Chest Surgery
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• v.12 no.2
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• pp.135-139
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• 1979

Interruption of the aortic arch may be defined as discontinuity of the aortic arch in which either an aortic branch vessel or a patent ductus arteriosus supplies the descending aorta. This uncommon lesion was described first by Raphe Steidele in 1778 and was later classified into 3 types by Celoria and Patton. This anomaly rarely occurs as an isolated anomaly. Most commonly, a ventricular septal defect, patent ductus arteriosus, and abnormal arrangement of the brachiocephalic arteries occurs together with arch anomaly. Rarely, more complex anomaly, such as transposition of the great vessel, or single ventricle, is coexistent. We present the case of an 6 year-old boy with D-transposition of great vessel single ventricle, patent ductus arteriosus and patent foramen ovale with interruption of the aortic arch (Type A).

• Journal of Trauma and Injury
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• v.30 no.4
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• pp.206-211
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• 2017

Aortic dissection caused by blunt trauma is a rare injury that can be complicated by malperfusion syndrome resulting from obstruction of branch vessels of the aorta. Here, we present a case of traumatic type B aortic dissection with right renal and small bowel ischemia, successfully managed by endovascular fenestration.

• Journal of Chest Surgery
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• v.45 no.1
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• pp.30-34
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• 2012

Background: The long-term results of homografts used in systemic circulation are controversial. We assessed the long-term results of using a cryopreserved homograft for an aortic root or aorta and its branch replacement. Materials and Methods: From June 1995 to January 2010, 23 patients (male:female=15:8, $45.4{\pm}15.6$ years) underwent a homograft replacement in the aortic position. The surgical techniques used were aortic root replacement in 15 patients and aortic graft interposition in 8 patients. Indications for the use of a homograft were systemic vasculitis (n=15) and complicated infection (n=8). The duration of clinical follow-up was $65{\pm}58$ months. Results: Early mortality occurred in 2 patients (8.7%). Perioperative complications included atrial arrhythmia (n=3), acute renal failure (n=3), and low cardiac output syndrome (n=2). Late mortality occurred in 6 patients (26.1%). The overall survival rates at 5 and 10 years were 66.3% and 59.6%, respectively. Six patients (28.6%) suffered from homograft-related complications. Conclusion: Early results of homograft replacement in aortic position were favorable. However, close long-term follow-up is required due to the high rate of homograft-related events.

• Journal of Veterinary Clinics
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• v.24 no.2
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• pp.233-237
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• 2007

A 10-month-old intact male Labrador Retriever dog was referred with the primary complaint of exercise intolerance, especially after vigorous exercise. Physical examination revealed split S1 and grade III/VI diastolic regurgitant murmur at the left apex and base, respectively. ECG finding was normal sinus rhythm at rest, but supraventricular tachycardia with bundle branch blocks after exercise. Thoracic radiography revealed dilated ascending aorta with normal range of cardiac silhouette (VHS 10.2). Echocardiography revealed abnormal valvular structures just above the aortic valvular cusps causing aortic regurgitation with a reduction of left ventricular ejection fraction (LVEF). Based on those findings, the case was diagnosed as congenital aortic regurgitation caused by abnormal valvular structures. The dog was managed with diltiazem and exercise restriction. This is a rare case of aortic deformity in dogs.

• Proceedings of the Korean Society of Veterinary Clinics Conference
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• 2006.11a
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• pp.113-113
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• 2006

• Journal of the Korean Society of Radiology
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• v.84 no.1
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• pp.286-290
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• 2023

Various branch anomalies of the aortic arch have been reported, but cases with separate origins of the internal and external carotid arteries with combined direct aortic arch origin of the left vertebral artery are extremely rare. Herein, we present a rare case of aplasia of the left common carotid artery with separate origins of the ipsilateral internal and external carotid arteries and vertebral artery from the aortic arch in a 10-year-old girl. In addition, we review the embryological development and clinical implications of these anatomical variations.

• Journal of Trauma and Injury
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• v.25 no.4
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• pp.296-299
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• 2012

The aorta is the most common major thoracic artery injured by blunt chest trauma. Injuries to major aortic arch branch arteries can also occur but are much less common than aortic injuries in the setting of blunt trauma. Although internal mammary artery (IMA) injury is uncommon and rarely diagnosed in cases of blunt chest trauma, it is one of the important sources of bleeding in chest trauma. IMA bleeding can cause ongoing blood loss and may lead to serious conditions such as extensive hemothorax, anterior mediastinal hematoma or its catastrophic complication, cardiac tamponade. However such arotic and branch artery injuries are not easily detected by plain radiograph, and are detected indirectly because of associated mediastinal hematoma. Herein, we report a case of IMA injury caused by blunt chest trauma secondary to pedestrian traffic accident. The injured patient was successfully treated by transcatheter arterial embolization (TAE).

• Journal of Chest Surgery
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• v.47 no.2
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• pp.163-166
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• 2014

A 49-year-old man with drowsy mentality was diagnosed with acute type A aortic dissection; he underwent an emergency operation. When selective antegrade cerebral perfusion was initiated, the right regional cerebral oxygen saturation ($rSO_2$) decreased as compared to the left one. Adequate blood flow was perfused through the branch of the artificial graft, after distal anastomosis, but the right $rSO_2$ did not recover. Angiography revealed another intimal tear on the right common carotid artery. A stent was then inserted. The right $rSO_2$ promptly increased to the same level as that of the left one. The patient was discharged without any neurologic complications.

• Journal of Chest Surgery
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• v.41 no.1
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• pp.110-115
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• 2008

Malperfusion of a major organ with aortic dissection has various clinical features according branch. The morbidity and mortality rate can increase without suspicion especially postoperative period. Surgical outcomes and prognosis are influenced by early expeditious diagnostic and therapeutic measures are mandatory for successful treatment. The authors report four successful cases of acute aortic dissection with mal perfusion of various organs, such as the brain, kidney, and the lower extremities.