Mechanisms
A 61-year-old with Lp(a) of 233 nmol/L survives a ruptured 7.3-cm root and ascending aortic aneurysm, case report raises aneurysm-risk question (JACC Case Rep 2025)
Original title: Elevated Lipoprotein(a) Levels and Massive Ruptured Root and Ascending Aortic Aneurysm
This case report describes a 61-year-old man who presented with severe dyspnoea and chest tightness and was found to have a 7.3-cm ruptured root and ascending aortic aneurysm, alongside an elevated Lp(a) of 233 nmol/L. He underwent emergency surgery, including a mechanical Bentall procedure, ascending aortic and hemiarch replacement, and bilateral pericardiectomy, and remained clinically stable at follow-up with a well-seated valve conduit and no complications. The authors suggest this case points to a potential, understudied association between elevated Lp(a) and thoracic aortic aneurysm rupture, possibly mediated by its proatherogenic and proinflammatory vascular properties, and call for further investigation into Lp(a)'s role in thoracic aneurysm risk stratification, a context distinct from its better-studied role in coronary and aortic valve disease.
Original abstract
Background: Rupture of a root and ascending aortic aneurysm is a rare, life-threatening condition requiring prompt recognition and surgical intervention. Elevated lipoprotein(a) levels have been implicated in vascular pathology but are less studied in thoracic aneurysms.
Case Summary: A 61-year-old man who presented with severe dyspnea and chest tightness was found to have a 7.3-cm ruptured root and ascending aortic aneurysm with elevated lipoprotein(a) (233 nmol/L). He underwent emergency surgery, including a mechanical Bentall procedure, ascending aortic and hemiarch replacement, and bilateral pericardiectomy. At follow-up, he was clinically stable with a well-seated valve conduit and no complications.
Discussion: This case suggests a potential association between elevated lipoprotein(a) and thoracic aortic aneurysm rupture, possibly linked its proatherogenic and proinflammatory properties in vascular pathology. Further investigations are needed to clarify its role in aneurysm risk stratification.
Take-Home Messages: Elevated lipoprotein(a) may contribute to thoracic aortic aneurysm progression. Its role in risk stratification warrants further investigation.
Summary written by lp-a.org from the published abstract; figures as published. Page updated 17 August 2026. Methods.