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Related Concept Videos

The Aorta01:14

The Aorta

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The aorta is the largest artery in the human body. It originates from the left ventricle of the heart and extends down to the abdomen, where it splits into two smaller arteries. Structurally, it can be divided into four main parts: the ascending aorta, the aortic arch, the thoracic aorta, and the abdominal aorta.
The average diameter of the aorta is approximately 2-3 cm, but the size can vary depending on the section of the aorta and the individual's age, sex, and body size. The aorta is...
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Thoracic Aorta01:15

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The thoracic section of the aorta begins at the T5 vertebra and extends to the T12 level at the diaphragm, initially progressing through the mediastinum to the left of the spinal column. Throughout its course in the thoracic segment, the thoracic aorta emits various offshoots known collectively as visceral and parietal branches. The branches that predominantly supply blood to visceral organs are termed visceral branches and include bronchial, pericardial, esophageal, and mediastinal arteries,...
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Abdominal Aorta01:25

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Once the aorta traverses the diaphragmatic plane at the aortic hiatus, it is known as the abdominal aorta. This anatomical structure is positioned leftward of the spinal column, encased within a cocoon of adipose tissue behind the peritoneal cavity. It terminates at the L4 vertebra, where it splits into the common iliac arteries. Prior to this bifurcation, the abdominal aorta gives rise to several vital branches.
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Aneurysm I: Introduction01:30

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An aortic aneurysm is a localized outpouching or dilation at a weak point in the artery wall. It may involve different parts of the aorta, such as the abdominal aorta, aortic arch, or thoracic aorta.Etiological factorsSeveral disorders are associated with aortic aneurysms.Congenital causes, such as primary connective tissue disorders like Marfan syndrome, impact the integrity and strength of connective tissues, notably affecting the aorta. Marfan syndrome is a genetic disorder that specifically...
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The Arch of Aorta01:10

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The coronary arteries, originating from the ascending aorta, bifurcate from two sinuses located within the ascending aorta. Positioned just above the aortic semilunar valve, these sinuses house essential aortic baroreceptors and chemoreceptors, crucial for maintaining cardiac function. The left coronary artery and the right coronary artery branch off from the left posterior and anterior aortic sinuses, respectively.
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Aortic Regurgitation I: Introduction01:15

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IntroductionAortic regurgitation is characterized by the backward flow of blood from the aorta into the left ventricle during diastole and arises from the improper closure of the aortic valve. This condition results in left ventricular volume overload and can stem from both acute and chronic etiologies, each contributing uniquely to the disease's progression and symptomatology.Acute and Chronic CausesAcute aortic regurgitation often results from events that suddenly impair the integrity of the...
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Related Experiment Video

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Modified Octopus Technique for Thoracoabdominal Aortic Aneurysm
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Bad aorta.

Kazuyoshi Tajima1

  • 1Department of Cardiovascular Surgery, Nagoya Daini Red Cross Hospital, 2-9 Myoken-cho, Showa-ku, Nagoya, 466-8650, Japan, cvstaj@nagoya2.jrc.or.jp.

General Thoracic and Cardiovascular Surgery
|March 18, 2014
PubMed
Summary
This summary is machine-generated.

Cardiac surgery for severe ascending aorta disease, termed "bad aorta," benefits from intraoperative epiaortic ultrasound. This imaging improves patient outcomes by guiding surgical approach and reducing risks.

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Author Spotlight: Using Point-of-Care Ultrasound for Comprehensive Evaluation of the Abdominal Aorta
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Area of Science:

  • Cardiovascular Surgery
  • Medical Imaging

Background:

  • Cardiac surgery is increasingly performed on complex cases, including those with severe ascending aorta calcification ('bad aorta').
  • Preoperative non-enhanced CT scans show no correlation with intraoperative findings of aortic lesions.
  • Existing surgical techniques for 'bad aorta' have high mortality and cerebrovascular accident rates.

Purpose of the Study:

  • To evaluate the utility of intraoperative epiaortic ultrasound for assessing ascending aorta lesions in cardiac surgery.
  • To compare outcomes of different surgical management strategies for 'bad aorta' cases.

Main Methods:

  • Utilized intraoperative epiaortic ultrasound for real-time, high-quality aortic assessment.
  • Compared outcomes of traditional methods with a recent cross-clamping technique under short-term total circulatory arrest (TCA).

Main Results:

  • Intraoperative epiaortic ultrasound provides accurate aortic evaluations without significant patient burden.
  • The cross-clamping method with short-term total circulatory arrest (TCA) significantly reduced combined mortality and cerebrovascular accident rates to approximately 5% compared to previous methods (<10%).

Conclusions:

  • Intraoperative epiaortic ultrasound is a valuable tool for assessing sclerotic lesions in the ascending aorta during cardiac surgery.
  • Optimizing surgical procedures based on epiaortic ultrasound findings and employing techniques like short-term total circulatory arrest (TCA) can further improve outcomes for 'bad aorta' patients.