Related Experiment Video
Updated: Aug 9, 2026

06:47
A Pulmonary Trunk Banding Model of Pressure Overload Induced Right Ventricular Hypertrophy and Failure
Published on: November 29, 2018
Dissecting aneurysm of the pulmonary trunk
1Department of Pathology, Walter C. Mackenzie Health Sciences Centre, University of Alberta, Edmonton, Canada.
Archives of Pathology & Laboratory Medicine
|October 1, 1989
Summary
Dissecting aneurysms of the pulmonary trunk, a rare cause of sudden death, were observed in a patient with pulmonary hypertension. This case highlights the critical link between patent ductus arteriosus and potentially fatal vascular events.
Area of Science:
- Cardiovascular Medicine
- Pulmonary Vascular Disease
- Medical Case Reports
Background:
- Dissecting aneurysms of the pulmonary trunk are exceedingly rare vascular events.
- Pulmonary hypertension can arise from various underlying conditions, including congenital heart defects.
- Sudden death can be an initial presentation of undiagnosed or severe cardiovascular pathology.
Observation:
- A case of pulmonary trunk dissecting aneurysm is presented.
- The patient exhibited pulmonary hypertension secondary to a patent ductus arteriosus.
- The aneurysm was identified as the cause of sudden death.
Findings:
- The study documents a fatal case of pulmonary trunk dissection.
- Patent ductus arteriosus was identified as the underlying cause of secondary pulmonary hypertension.
- The dissection of the pulmonary trunk led to sudden, unexpected mortality.
Implications:
- This case underscores the importance of recognizing patent ductus arteriosus as a risk factor for pulmonary hypertension and potentially catastrophic vascular events.
- Early diagnosis and management of patent ductus arteriosus may prevent severe pulmonary vascular complications.
- Further research into the pathophysiology of pulmonary trunk aneurysms is warranted.
Related Concept Videos
Thoracic Aorta
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,...
Overview of Pulmonary Circulation
The pulmonary circulation is a vital system in our body that acts as a bridge between the respiratory and cardiovascular systems. It serves as a transport network for deoxygenated blood from the heart to the lungs and then returns oxygen-rich blood back to the heart.
The process begins with the right ventricle of the heart pumping deoxygenated blood into the pulmonary trunk. This large vessel extends about 5 centimeters before splitting into the left and right pulmonary arteries. These arteries...
The process begins with the right ventricle of the heart pumping deoxygenated blood into the pulmonary trunk. This large vessel extends about 5 centimeters before splitting into the left and right pulmonary arteries. These arteries...
Aneurysm I: Introduction
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...
Aneurysm II: Clinical Manifestations and Diagnostic Studies
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...
Pulmonary Embolism I: Introduction
Pulmonary embolism (PE) occurs when a thrombus, fat or air embolus, amniotic fluid, or tumor tissue blocks one or more pulmonary arteries. These blockages originate in the venous system or the right side of the heart.EtiologyPE primarily arises from deep vein thrombosis (DVT) and other hypercoagulable states, such as inherited thrombophilias. Additional etiological factors include venous stasis, commonly seen in obesity, and endothelial injury from surgery and trauma. Less common causes include...

