CuraRN

Ventricular and Aortic Aneurysm

Student study notes from paramedic coursework (2023 to 2024), not medical advice. Verify clinical values against current references and your local protocols.

EMS etiologies

Setting: ER

Aortic aneurysms are primarily linked to atherosclerosis and are treated with medical monitoring or surgery depending on size and risk. Ventricular aneurysms often result from heart attacks and are managed medically, with surgery for larger or symptomatic cases.

Clinical Presentation(aortic):

• Atherosclerosis: The most common cause, particularly in abdominal aortic aneurysms, where plaque buildup weakens the aortic wall.
• Infections: Conditions like infective endocarditis, syphilis, tuberculosis, and HIV can lead to aortic aneurysms.
• Trauma: Injury to the aorta from accidents or surgery can cause aneurysms.
• Connective Tissue Diseases: Disorders such as Ehlers-Danlos, Marfan, and Loeys-Dietz syndrome weaken the aortic wall.
• Cystic Medial Necrosis: A degenerative condition affecting the connective tissue in the aorta, often linked to abdominal aneurysms.
• Aortitis: Inflammation of the aorta due to autoimmune conditions, often leading to thoracic aneurysms.

Treatment Modalities (aortic):

• Monitoring: Small, asymptomatic aneurysms are monitored through periodic imaging (every 6-12 months).
• Medications: Antihypertensive drugs to manage blood pressure, and anticoagulation for patients with mural thrombi to prevent clots.

• Risk Factor Modification: Smoking cessation, cholesterol control, and managing hypertension and diabetes.

• Surgical Management:
  • Open Surgical Repair: The traditional method involves replacing the weakened aorta with a synthetic graft, often used for larger or more complex aneurysms.
  • Endovascular Aneurysm Repair (EVAR): A less invasive method using a stent graft inserted via the femoral artery. Preferred for older or higher-risk patients. Advanced versions like Fenestrated and Branched EVAR are used for complex aneurysms.

Clinical Presentation(ventricular):

• Congenital: Rare and usually present from birth, these aneurysms are large and composed of thin tissue. They may remain asymptomatic.
• Acquired:
  • Ischemic Aneurysms: Commonly occur after a heart attack (myocardial infarction), especially in the anterior wall of the heart.
  • Traumatic Aneurysms: Caused by direct injury to the heart.
  • Infective Aneurysms: Result from infections like infective endocarditis or syphilis.
  • Idiopathic Aneurysms: Rare and without a clear cause, found primarily in certain populations.

Treatment Modalities (ventricular):

• Medical Management:
  • Monitoring: Small to large aneurysms without symptoms can be monitored with good survival rates.
  • Medications: Manage coronary artery disease risk factors (hypertension, high cholesterol), use ACE inhibitors/ARBs to reduce heart stress, and anticoagulation for preventing thromboembolism.
  • Symptomatic Cases: May require additional treatments for heart failure, angina, or arrhythmias, with surgery considered if symptoms persist.
• Surgical Management:
  • Aneurysm Removal: The aneurysmal section of the heart is removed to restore function, with preoperative evaluations like cardiac catheterization and echocardiography.
  • Arrhythmia Treatment: Subendocardial ablation is sometimes done to treat arrhythmias originating from the aneurysm.