Unequal pulses
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Overview
A difference in blood pressure between arms or between the arms and legs. Examination of the vascular system is imperative. Unequal pulses can be indicative of an underlying disease.
Differential Diagnosis
In alphabetical order. [1] [2]
- Aortic Aneurysm
- Aortic Dissection
- Aortic isthmus stenosis (arms & legs)
- Aortic stenosis
- Atherosclerosis
- Coarctation of the aorta
- Compartment Syndrome
- Hemiplegia
- Patent ductus arteriosus
- Stenosis of the brachiocephalic trunk
- Subclavian-Steal Syndrome
- Subclavian artery abnormality/stenosis
- Syphilis
- Takayasu’s Arteritis(pulseless disease)
- Thoracic aortic aneurysm
- Thoracic Outlet Syndrome
- Vasculitis
Diagnosis
- Pulsatile abdominal mass
- Atrophic changes and dependent rubor
- continuous murmur
- asymmetric blood pressure
- ABI of systolic pressure <0.9
Severe ischemia
- <0.5 ABI of systolic pressure
Chest X Ray
- potentially reveals
-
- pleural effusion
- tracheal deviation
- “rib notching”
- intercostal artery collateral channels in coarctation of the aorta.
MRA and CT
- used to diagnose Takayasu’s arteritis, aortic aneurysm, peripheral artery disease
- MRA, trasesophageal echocardiogram, CT -> aortic dissection
Other Imaging Findings
References
Acknowledgements
The content on this page was first contributed by Editor-In-Chief: C. Michael Gibson, M.S., M.D. [2]
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