Aneurysm II: Clinical Manifestations and Diagnostic Studies

Thoracic aortic aneurysms typically cause deep, diffuse chest pain radiating to the interscapular area, dyspnea from pressure on the trachea or lungs, and a brassy, paroxysmal cough. Patients may also experience hoarseness, stridor, or loss of voice due to recurrent laryngeal nerve compression. Dysphagia can occur if the aneurysm compresses the esophagus.

Aneurysms in the ascending aorta and aortic arch can diminish coronary artery blood flow, leading to angina and chest discomfort. They may also reduce carotid artery flow, causing transient ischemic attacks. Compression of the superior vena cava results in jugular venous distention, facial swelling, and arm edema.

Abdominal aortic aneurysms present as a pulsatile mass in the periumbilical region, left of the midline, with audible bruits on examination. Patients may experience back pain, epigastric discomfort, or altered bowel habits. Plaque embolization can cause blue toe syndrome, characterized by mottled feet and toes with intact pedal pulses.

Retroperitoneal rupture may present with severe back pain and Gray Turner sign (flank bruising), as surrounding structures temporarily control bleeding. Rupture into the thoracic or abdominal cavity typically causes fatal hemorrhage and hypovolemic shock, characterized by tachycardia, hypotension, pallor, clammy skin, decreased urine output, and altered consciousness.

Chest X-rays reveal abnormal widening of the thoracic aorta, while abdominal X-rays show aortic wall calcification. Ultrasound screens and monitors aneurysm size. CT or MRI scans are essential for diagnosing and assessing aneurysm location and severity. Angiography provides detailed contrast imaging and comprehensive mapping of the aortic system.

Electrocardiograms (ECGs) are useful to rule out myocardial infarction, as symptoms of thoracic aortic aneurysm or dissection can mimic angina and other cardiac conditions. This diagnostic test helps differentiate between aortic pathology and primary cardiac disease, ensuring accurate diagnosis and appropriate treatment planning.

Echocardiography assesses aortic valve function and evaluates structural changes associated with aortic aneurysms. This imaging modality helps determine the extent of aortic involvement and guides clinical decision-making regarding intervention timing and type, complementing other diagnostic studies in comprehensive aneurysm assessment.