Differential Diagnoses for Radial Pulse Volume Differences in Both Arms
Single Most Likely Diagnosis
- Atherosclerotic Peripheral Artery Disease: This condition is a common cause of pulse volume differences due to the buildup of plaque in the arteries, leading to reduced blood flow to the affected limb. It is more likely to occur in individuals with risk factors such as smoking, diabetes, and hypertension.
Other Likely Diagnoses
- Subclavian Artery Stenosis or Occlusion: Stenosis or occlusion of the subclavian artery can lead to reduced blood flow to the arm, resulting in a decreased radial pulse volume. This condition can be caused by atherosclerosis, thrombosis, or other factors.
- Thoracic Outlet Syndrome: Compression of the subclavian artery or vein by the thoracic outlet can cause reduced blood flow to the arm, leading to pulse volume differences.
- Arterial Embolism: An embolus in the arm can cause acute reduction in blood flow, resulting in a decreased radial pulse volume.
Do Not Miss Diagnoses
- Aortic Dissection: Although less common, aortic dissection can cause unequal blood flow to the arms, leading to pulse volume differences. This is a life-threatening condition that requires immediate attention.
- Subclavian Steal Syndrome: This condition occurs when there is a significant stenosis or occlusion of the subclavian artery, causing reversal of blood flow in the vertebral artery. It can lead to reduced blood flow to the arm and brain, making it a critical diagnosis not to miss.
- Trauma or Vascular Injury: Trauma to the arm or chest can cause vascular injury, leading to reduced blood flow and pulse volume differences.
Rare Diagnoses
- Takayasu Arteritis: A rare form of large vessel vasculitis that can cause stenosis or occlusion of the subclavian artery, leading to reduced blood flow to the arm.
- Giant Cell Arteritis: Although more commonly associated with the temporal artery, giant cell arteritis can also affect the subclavian artery, causing reduced blood flow to the arm.
- Arteriovenous Malformation: A rare congenital condition that can cause abnormal blood flow and pulse volume differences in the affected limb.