Related Experiment Video
Updated: Aug 13, 2025
09:32
Measurement of Pulse Propagation Velocity, Distensibility and Strain in an Abdominal Aortic Aneurysm Mouse Model
Published on: February 23, 2020
6.2K
Augmentation Index in Patients with Thoracic Aortic Aneurysm: A Matched Case-Control Study
Patrick Baumgartner1, Protazy Rejmer1, Martin Osswald1
1Department of Pulmonology, University Hospital Zurich (USZ), University of Zurich (UZH), 8091 Zurich, Switzerland.
Journal of Cardiovascular Development and Disease
|January 20, 2023
Summary
Thoracic aortic aneurysms (TAA) patients do not show increased arterial stiffness compared to matched controls. Further research is needed to determine if arterial stiffness contributes to TAA development.
Area of Science:
- Cardiovascular Medicine
- Vascular Biology
- Biomedical Engineering
Background:
- Thoracic aortic aneurysms (TAA) are associated with life-threatening complications like rupture and dissection.
- Increased central arterial stiffness is hypothesized to be a characteristic of TAA.
- Previous studies lacked matched control groups for robust comparison.
Purpose of the Study:
- To investigate arterial wall properties in TAA patients compared to a meticulously matched control group.
- To determine if central arterial stiffness differs between TAA patients and controls.
- To explore the relationship between TAA and arterial stiffness, adjusting for cardiovascular risk factors.
Main Methods:
- Applanation tonometry was used to measure pulse wave analysis in 74 TAA patients and 74 matched controls.
- The SphygmoCor System analyzed pulse wave data.
- Augmentation index adjusted to a heart rate of 75/min (AIx@75) was the primary metric for comparison.
Main Results:
- No significant difference in AIx@75 was observed between the TAA group (24.7 ± 11.2%) and the matched control group (22.8 ± 11.2%, p=0.240).
- After adjusting for cardiovascular risk factors, no association was found between TAA and AIx@75.
- Arterial wall properties were comparable between TAA patients and controls matched for cardiovascular risk factors.
Conclusions:
- Patients with TAA exhibit arterial wall properties similar to matched controls.
- The role of increased central arterial stiffness in the *emergence* of TAA requires further investigation.
- Arterial stiffness may be a consequence rather than a cause of TAA development.
Related Concept Videos
01:21Aneurysm II: Clinical Manifestations and Diagnostic Studies
18
Thoracic, aortic arch and abdominal aneurysms are significant vascular conditions that can present with various clinical manifestations and lead to serious complications. Understanding these manifestations and the appropriate diagnostic studies is essential for effective management and treatment.Thoracic Aortic AneurysmsThoracic aortic aneurysms often remain asymptomatic until they reach a size that impinges on adjacent structures. They typically cause deep, diffuse chest pain that radiates to...
18
01:26Aneurysm III: Interprofessional Care
17
Aneurysm management involves either conservative medical therapy or surgical intervention, depending on the size and symptoms of the aneurysm. Conservative management is generally reserved for smaller, asymptomatic aneurysms, while larger or symptomatic aneurysms often necessitate surgical repair.Conservative Medical TherapyFor small, asymptomatic aneurysms, particularly abdominal aortic aneurysms (AAA) less than 5.5 centimeters in diameter, conservative medical therapy is recommended. This...
17
01:30Aneurysm I: Introduction
18
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...
18
01:22Aneurysm IV: Nursing Management
16
Vigilant monitoring for aneurysm rupture is essential for patients undergoing aortic surgery.Preoperative Nursing ManagementContinuously monitor the patient for manifestations of aneurysm rupture, such as pallor, weakness, tachycardia, hypotension, abdominal, back, groin, or periumbilical pain, changes in consciousness, and a pulsating abdominal mass. Regularly assess the patient's peripheral pulses.Instruct the patient to consume a clear liquid diet the day before surgery and administer...
16
01:22Aortic Regurgitation II: Clinical Features and Diagnostic Tests
41
Aortic valve regurgitation (AR) occurs when the aortic valve fails to close properly, allowing blood to flow backward from the aorta into the left ventricle. This backflow can result in two distinct clinical presentations: acute and chronic AR, each characterized by its own set of symptoms and physical findings.Acute Aortic RegurgitationAcute AR presents with a sudden onset of severe symptoms. Patients typically experience profound dyspnea (shortness of breath), chest pain, and signs of left...
41
01:25Aortic Regurgitation III: Medical Management
32
Aortic regurgitation (AR) is when the aortic valve does not close or seal properly, leading to backward blood circulation from the aorta into the left ventricle during diastole. Common causes of AR include rheumatic heart disease, congenital valve defects, and aortic root dilation. Managing AR requires a multifaceted approach to alleviate symptoms, preserve left ventricular function, and address the underlying cause of the regurgitation. Patients with symptomatic AR or significant left...
32