Subclavian Steal Syndrome, A Simple Guide To The Condition, Diagnosis, Treatment And Related Conditions (eBook, ePUB)
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>40 mm Hg was linked with significantly higher incidence of partial and complete steal, with a higher proportion of the latter. Causes: 1. Atherosclerosis is the most frequent cause of sub-clavian stenosis and steal syndromes 2. Large artery vasculitis, thoracic outlet syndrome, and stenosis after surgical repair of aortic co-arctation or tetralogy of Fallot are other likely causes. 3. Congenital anomalies, such as a right-sided aortic arch with an isolated left sub-clavian artery, can also cause sub-clavian narrowing and steal syndromes More unusual causes of sub-clavian steal are: 1.Takayasu...
>40 mm Hg was linked with significantly higher incidence of partial and complete steal, with a higher proportion of the latter. Causes: 1. Atherosclerosis is the most frequent cause of sub-clavian stenosis and steal syndromes 2. Large artery vasculitis, thoracic outlet syndrome, and stenosis after surgical repair of aortic co-arctation or tetralogy of Fallot are other likely causes. 3. Congenital anomalies, such as a right-sided aortic arch with an isolated left sub-clavian artery, can also cause sub-clavian narrowing and steal syndromes More unusual causes of sub-clavian steal are: 1.Takayasu's arteritis (large artery vasculitis), 2.Injury after surgery or radiation therapy, 3.Tumor of the chest cavity (mediastinal tumors), 4.Damage to blood vessel wall and 5.Anatomical anomalies of blood vessels. Symptoms Sub-clavian stenoses are most often asymptomatic Vertebrobasilar insufficiency manifests typically as "drop attacks" but may also present as: 1. Dizziness, 2. Diplopia, 3. Nystagmus, 4. Tinnitus or even hearing loss. Decreasing circulation to the arm can be presented as: 1. Weakness, 2. Pain through the use of the arm, 3. Tingling sensation or 4. Coldness in the arm. Diagnosis By evaluating blood pressure of both arms, the doctor will find a lower blood pressure on one side. There will also be decreased or absent pulse in the wrist of the same arm. The non-invasive Color-coded Doppler or transcranial Doppler ultrasonography is now regarded as the screening tool for sub-clavian steal Treatment When the sub-clavian steal syndrome has no or only scanty symptoms, a wait and watch treatment is indicated When there are distressing symptoms, the patient should be assessed for surgery to widen the stricture of a vessel such as endovascular stenting or sub-clavian bypass surgery Angioplasty and stenting is the favored surgical choice due to high success rates and low risks. TABLE OF CONTENT Introduction Chapter 1 Subclavian Steal Syndrome Chapter 2 ...
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