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Query: UMLS:C0022116 (ischemia)
 91,303 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The treatment of thoracic outlet syndrome (TOS) is controversial and long-term results are poorly documented. This retrospective study was carried out to assess clinical outcome 2 years after TOS surgery and to determine predictive factors of outcome. Between 1979 and 1999, 155 patients underwent TOS surgery. Of these patients, 140 (90.3%) had a minimum follow-up of 2 years. Thirty-six (25.7%) patients underwent bilateral procedures. A total of 176 procedures were reviewed and served as a basis for study. Presenting symptoms were neurologic in 15 cases (8.5%), arm or hand ischemia occurred in 38 cases (21.6%), and venous compression or thrombosis in 27 cases (15.4%). In 96 cases (54.5%), symptoms were mixed. A transaxillary approach (107 cases) was chosen to address venous symptoms and minor arterial dysfunction. A supraclavicular approach (69 cases) was used when there were large abnormal bony structures, neurologic symptoms, and/or severe limb ischemia. The first rib was resected either extensively from its neck to the sternal attachment (54 cases) or partially, including the mid-rib and neck or the mid-rib and sternal attachment (121 cases), depending on symptoms, approach, and surgeon's choice. Whenever present, cervical ribs, anterior scalenus muscle, and various fibrous or muscular compressive structures were also removed. The 2-year functional outcome according to Derkash's classification was assessed by means of a phone survey. Pre-, per-, and immediate postoperative data were recorded and compared to functional outcomes. Mean follow-up was 7.5 A+/- 3.4 years (2a<euro>"19 years). Functional results were excellent, good, fair, and poor in 87 (49.4%), 61 (34.6%), 14 (8%),and 14 (8%) procedures respectively. Predictive factors of negative outcomes were acute ischemia ( p < 0.01), sensory or motor deficit ( p < 0.01), and poorly systematized neurological symptoms as presenting symptoms ( p < 0.05), and extended resection of the first rib ( p < 0.01) and severe postoperative complications ( p < 0.01). This series showed that the 2-year results of TOS surgery were satisfactory in the majority of cases. Patients suffering from poorly systematized neurological symptoms in the arm had poor results. This subset of patients should be denied surgery or at least informed that postoperative results might be disappointing. Partial first-rib resection and a careful technique avoiding postoperative complications were also factors in long-term success.
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PMID:Thoracic outlet syndrome surgery: long-term functional results. 1553 35

This retrospective study aims to clarify the mechanisms, frequency, symptoms, treatment, and outcome of post-traumatic thoracic outlet syndromes. A total of 13 patients (7 men and 6 women) with a mean age of 41 +/- 16 years were studied. Underlying injuries resulted from sports, road, and household accidents. Bone lesions were pseudarthrosis, hypertrophic callus, and luxations. Congenital anomalies were observed in five patients (38%). Vascular lesions included aneurysm of the subclavian artery or vein, acute ischemia, and subclavian vein thrombosis. Operative treatment involving orthopedic and/or vascular surgery was indicated in all patients. Post-traumatic thoracic outlet syndrome occurs in young subjects after violent trauma. Vascular complications are frequent and severe. Treatment achieves good results but benefits may be diminished by bone or nerve involvement.
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PMID:Post-traumatic thoracic outlet syndromes. 1571 63

Upper extremity ischemia is a rare entity usually due to emboli of arterial origin. Such thromboemboli produce acute symptoms of sufficient severity as to necessitate early surgical intervention. We report the case of a patient with severe ischemia in his left hand, in whom the embolic source was a mural thrombus localized at the level of a saccular aneurysm of the subclavian artery. After having excluded the presence of a thoracic outlet syndrome, the lesion was successfully treated by means of percutaneous implantation of a stent graft with the exclusion of the aneurysm and the sealing of the thrombus.
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PMID:Endovascular treatment of a symptomatic aneurysm of the left subclavian artery. 1577 78

Although the causes of digital ischemia and necrosis are diverse in women, the most common etiology is connective tissue disease. We describe a patient with scleroderma who presented with arm ischemia secondary to arterial embolization from thoracic outlet syndrome. Her sublavian artery was compressed by the anterior scalene muscle and a cervical rib, leading to a stenosis with poststenotic dilation of the artery. Within the aneurysmal formation was a thrombus, which was probably the source of the distal embolization. The patient underwent surgical resection of the cervical and first rib. The abnormal portion of the subclavian artery was resected and replaced with an interposition graft.
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PMID:Unusual etiology of upper extremity ischemia in a scleroderma patient: thoracic outlet syndrome with arterial embolization. 1754 93

A rare presentation of arterial thoracic outlet syndrome (TOS) is described in a young woman. Arterial TOS caused by a cervical rib produced acute upper extremity ischemia due to subclavian artery aneurysm formation. Clinical presentation also included left hemiparesis caused by right subclavian artery thrombosis and retrograde embolization of thrombus via the common carotid artery to the right middle cerebral artery distribution. Surgical repair of the subclavian artery was performed, but permanent neurologic deficit remained. Acute thrombosis of the right subclavian artery can produce cerebrovascular complication. The assessment of such risk in patients with arterial TOS is warranted and the arterial lesion corrected surgically.
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PMID:Cerebral embolic stroke and arm ischemia in a teenager with arterial thoracic outlet syndrome: a case report. 1759 94

Thoracic outlet syndrome (TOS) is a nonspecific label. When employing it, one should define the type of TOS as arterial TOS, venous TOS, or neurogenic TOS. Each type has different symptoms and physical findings by which the three types can easily be identified. Neurogenic TOS (NTOS) is by far the most common, comprising well over 90% of all TOS patients. Arterial TOS is the least common accounting for no more than 1%. Many patients are erroneously diagnosed as "vascular" TOS, a nonspecific misnomer, whereas they really have NTOS. The Adson Test of noting a radial pulse deficit in provocative positions has been shown to be of no clinical value and should not be relied upon to make the diagnosis of any of the three types. The test is normal in most patients with NTOS and at the same time can be positive in many control volunteers. Arterial TOS is caused by emboli arising from subclavian artery stenosis or aneurysms. Symptoms are those of arterial ischemia and x-rays almost always disclose a cervical rib or anomalous first rib. Venous TOS presents with arm swelling, cyanosis, and pain due to subclavian vein obstruction, with or without thrombosis. Neurogenic TOS is due to brachial plexus compression usually from scarred scalene muscles secondary to neck trauma, whiplash injuries being the most common. Symptoms include extremity paresthesia, pain, and weakness as well as neck pain and occipital headache. Physical exam is most important and includes several provocative maneuvers including neck rotation and head tilting, which elicit symptoms in the contralateral extremity; the upper limb tension test, which is comparable to straight leg raising; and abducting the arms to 90 degrees in external rotation, which usually brings on symptoms within 60 seconds.
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PMID:Diagnosis of thoracic outlet syndrome. 1782 54

This study was performed to review our 16-year experience in acute finger ischemia. A review of the literature was also performed. A retrospective chart review of 17 patients, 14 men and 3 women, was conducted. Etiologies were ulnar aneurysm in 11 cases, atrial fibrillation in five cases and thoracic outlet syndrome in one case. Upto the palmar superficial arch, embolus due to atrial fibrillation or thoracic outlet syndrome could be loosened by a Fogarty catheter. In cases of aneurysm of the ulnar artery, we performed each time an aneurysm resection followed by direct anastomose alone, while three patients had additional grafts: artery graft (epigastric artery) or reversed vein grafts (superficial forearm vein). Microsurgical dissection of the digital collateral arteries enabled us to perform a thrombectomy. The transversal arteriotomies were closed after the collateral arteries were washed. The immediate perfusion of digit after the reconstruction of the aneurysm was each time excellent. The disoccluded vessels, investigated by Allen testing and Doppler ultrasound, were all patents. Two patients suffered from a small ulcer of the small fingertip that disappeared after 2 weeks. One patient had a 30 degrees ischemic flexion contracture in the metacarpophalangeal joint and 25 degrees flexion contracture in the proximal interphalangeal joint of the third digit. With regards to long-term outcomes, no secondary amputations were necessary and there was no recurrence after a mean follow-up of 10.7 years. Diagnostic of acute digital ischemia is often neglected. An early recognition and an aggressive microsurgical treatment are necessary to ensure low morbidity.
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PMID:Acute digital ischemia: a neglected microsurgical emergency. Report of 17 patients and literature review. 1996 63

A thoracic outlet syndrome (TOS) is caused by arterial or nervous obstruction because of skeletal or muscular anomalies and hypertrophies. Congenital rib anomalies occur with low incidences (0.15-0.31%), predominantly affect the right side and are normally diagnosed at a young age or remain asymptomatic throughout life. Here, we report on the unusual case of a 71-year-old female patient with subacute ischemia of the left arm due to a TOS resulting from Srb anomaly, a very rare congenital rib anomaly.
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PMID:Unusual Case of an Arterial Thoracic Outlet Syndrome due to Srb Anomaly. 2536 Apr 15

Stroke is an exceedingly rare presentation of arterial thoracic outlet syndrome (aTOS). This report describes a case of cerebellar stroke secondary to aTOS and reviews the literature. A 56-year-old woman with no previous history of stroke or arm ischemia presented with vertigo. Computed tomography (CT) and magnetic resonance imaging confirmed a left cerebellar ischemic stroke. She subsequently developed ischemia of her left arm, which was treated by a thromboembolectomy. CT angiography revealed bilateral cervical ribs along with bilateral subclavian artery aneurysms. Staged resection of the cervical ribs and reconstruction of the subclavian arteries were performed. Symptomatic arterial thoracic outlet syndrome most commonly presents as arm ischemia because of embolization of intramural clot from a subclavian artery aneurysm or because of thrombosis of the subclavian artery aneurysm itself. In rare cases, the clot can propagate retrograde, resulting in stroke. In young patients presenting with ischemic stroke, arterial thoracic outlet syndrome should be considered as part of the differential diagnosis.
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PMID:Bilateral cervical ribs causing cerebellar stroke and arterial thoracic outlet syndrome: a case report and review of the literature. 2572 78

Arterial thoracic outlet syndrome (TOS) causes ischemic symptoms; it is the rarest type, occurring in 5% of all TOS cases. This paper is a case report of a 38-year-old male patient diagnosed with arterial TOS, displaying symptoms of acute critical limb ischemia caused by thromboembolism. Brachial artery of the patient has been diffusely damaged by repeated occurrence of thromboembolism. It was thought to be not enough only decompression of subclavian artery to relieve the symptoms of hand ischemia; therefore, bypass surgery using reversed great saphenous vein was performed.
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PMID:Bypass surgery in arterial thoracic outlet syndrome. 2588 1


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