II. Epidemiology
- Age: 20 to 40 years old
- Gender: Women account for up to 90% of cases
- Race: More common in asian descent
III. Pathophysiology
- Rare, large vessel Vasculitis
- Granulomatous inflammation of the aorta and its main branches
IV. Symptoms
- Phase 1: Inflammatory Response (Early in course)
- Fatigue
- Weight loss
- Low-grade fever
- Night Sweats
- Arthralgias
- Myalgias
- Phase 2: Vascular Insufficiency (Later in course)
- Finger coldness and numbness
- Skin lesions similar to Erythema Nodosum or Pyoderma Gangrenosum
- Focal symptoms are related to specific arterial involvement
- Carotid Artery involvement with CNS symptoms
- Abdominal aorta with lower extremity Claudication
V. Signs
- Hypertension
- Diminished Arterial Pulses (may start in upper extremities)
- Visual disturbances
- Neurologic deficit
- Blood Pressure discrepancy (e.g. decreased in lower extremities)
- Vascular Bruits
VI. Diagnosis: ACR Criteria (three of six present for diagnosis)
- Age at disease onset <40 years old
- Extremity Claudication
- Decreased brachial artery pulse
- Blood Pressure difference between arms >10 mmHg
- Subclavian Artery or Aortic Bruit
- Abnormal arteriogram
VII. Labs
-
Complete Blood Count (CBC)
- Normochromic Normocytic Anemia
- Increased acute phase reactants
- Increased C-Reactive Protein (C-RP)
- Increased Erythrocyte Sedimentation Rate (ESR)
- Pentraxin-3
- Biopsy of vascular tissue
- Cytotoxic Lymphocyte infiltration (esp. gamma delta T Lymphocytes)
VIII. Imaging: Angiography
- CT angiogram or the chest AbdomenPelvis (aortic survey)
- Alternatively, MRA Angiogram or Standard Angiography of arterial tree may be performed instead
- Findings
- Smoothly tapering vessel lumens or Occlusion
- Vessel wall thickening
-
Doppler Ultrasound
- May identify vessel wall inflammation
IX. Differential Diagnosis
- See Vasculitis
- Fibromuscular dysplasia
- Ergotamine toxicity
- Ehlers-Danlos Syndrome
- Temporal Arteritis
X. Management
- Monitoring for response with acute phase reactants and imaging
- High dose Corticosteroids (e.g. Prednisone 40-60 mg orally daily)
- Response to Corticosteroids in only 50% of patients
-
Immunosuppressants (e.g. Cyclophosphamide, Azathioprine, Methotrexate)
- Typically administered in combination with Corticosteroids
- Hypertension Management
- Surgery Indications (for disease refractory to Corticosteroids and Immunosuppressants)
- Hypertension with critical Renal Artery Stenosis
- Extremity Claudication limiting Activities of Daily Living
- Cerebrovascular ischemia or critical stenosis of three of more Cerebral Vessels
- Moderate Aortic Regurgitation
- Cardiac ischemia with confirmed Coronary Artery involvement
XI. Complications
- Cardiovascular and systemic Hypertension complications
- Arterial aneurysm or dissection
- Dilated Cardiomyopathy
- Aortic Valve Insufficiency
- Congestive Heart Failure
- Neurologic
- Gastrointestinal
- Mesenteric Iscehmia
- Ocular
- Retinal ischemia
- Retinal Detachment
XII. References
- Hunder (2011) in UpToDate, Clinical features and diagnosis of Takayasu Arteritis, Accessed 11/30/11
- Mezan (2022) Crit Dec Emerg Med 36(8): 10-2
- Natraj Setty (2017) J Rare Dis Res Treat 2(2): 63-8
- Russo (2018) Front Pediatr 6:265 +PMID: 30338248 [PubMed]
- Serra (2016) Ann Vasc Surg 35:210-25 +PMID:27238990 [PubMed]