Related Experiment Video
Updated: Jun 5, 2025

07:12
Author Spotlight: Using Point-of-Care Ultrasound for Comprehensive Evaluation of the Abdominal Aorta
Published on: September 8, 2023
2.2K
Influence of Aortic Deviation on Abdominal Aorta Bifurcation Level Relative to Vertebral Position
Jyoti Kiran1, Navbir Pasricha1, Rajan Bhatnagar1
1Anatomy, Dr. Ram Manohar Lohia Institute of Medical Sciences, Lucknow, IND.
Cureus
|December 16, 2024
Summary
Abdominal aortic deviation (AAD) affects about one-fifth of patients, more often in women and older adults. Abdominal aortic bifurcation (AAB) typically occurs at the L4 vertebra, and AAD does not influence its level.
Area of Science:
- Radiology
- Vascular Anatomy
- Medical Imaging
Background:
- Limited research exists on abdominal aortic deviation (AAD) and its effect on abdominal aortic bifurcation (AAB) vertebral levels.
- Understanding the anatomical position of AAB and prevalence of AAD is crucial for clinical assessment.
Purpose of the Study:
- To determine the vertebral level of abdominal aortic bifurcation (AAB).
- To assess the prevalence of abdominal aortic deviation (AAD).
- To evaluate the impact of AAD on AAB levels.
Main Methods:
- Retrospective analysis of 208 contrast-enhanced computed tomography (CECT) scans from adult subjects.
- Utilized DICOM viewing software (RadiAnt) to identify AAD and AAB vertebral levels.
- Cross-sectional study design.
Main Results:
- Abdominal aortic deviation (AAD) was present in 21.2% of subjects, with higher rates in women (25.45%) and older age groups (p=0.03).
- Abdominal aortic bifurcation (AAB) most commonly occurred at the middle L4 (31.2%) and lower L4 (23.6%) vertebral levels.
- AAD did not significantly impact the vertebral level of AAB (p=0.55).
Conclusions:
- Abdominal aortic deviation (AAD) is observed in approximately one-fifth of the study population.
- AAD prevalence is higher in women and elderly individuals.
- Abdominal aortic bifurcation (AAB) is typically located at the L4 vertebra, unaffected by AAD.
Related Concept Videos
Abdominal Aorta
621
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.
The celiac trunk, a singular artery, divides into the left gastric artery, which...
The celiac trunk, a singular artery, divides into the left gastric artery, which...
621
The Aorta
637
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...
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...
637
Thoracic Aorta
377
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,...
377
Vertebral Column: Regions and Curvature
3.5K
The vertebral column or spine is a flexible column that supports the head, neck, and body and allows for their movements. It also protects the spinal cord.
Regions of the Vertebral Column
In an adult, the spine is subdivided into five regions: the cervical, the thoracic, the lumbar, the sacral, and the coccygeal region. The spine initially develops as a series of 33 vertebrae; after 20 years of age, the nine bones in the sacral region, five sacral, and four coccygeal bones fuse to form...
Regions of the Vertebral Column
In an adult, the spine is subdivided into five regions: the cervical, the thoracic, the lumbar, the sacral, and the coccygeal region. The spine initially develops as a series of 33 vertebrae; after 20 years of age, the nine bones in the sacral region, five sacral, and four coccygeal bones fuse to form...
3.5K
Veins of Thorax
610
The azygos system is a crucial part of the body's circulatory system and drains most of the thorax. It comprises the azygos, hemiazygos, and accessory hemiazygos veins.
The azygos vein, positioned just right of the midline and anterior to the vertebral column, begins at the junction of the right ascending lumbar and subcostal veins, terminating in the superior vena cava. This vein drains blood from the right side of the thoracic wall, thoracic viscera, and posterior abdominal wall.
The...
The azygos vein, positioned just right of the midline and anterior to the vertebral column, begins at the junction of the right ascending lumbar and subcostal veins, terminating in the superior vena cava. This vein drains blood from the right side of the thoracic wall, thoracic viscera, and posterior abdominal wall.
The...
610
The Arch of Aorta
560
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.
Encircling the heart, the coronary arteries form a ring-like structure before...
Encircling the heart, the coronary arteries form a ring-like structure before...
560

