Retrograde Vertebral Artery Blood Flow

González, Luis Llanes; Weintraub, Ronald A.; Wiot, Jerome F.; Lewis, Carson

doi:10.1148/82.2.211

Cited by 19 publications

(2 citation statements)

References 8 publications

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“…Such a physiologic situation can lead to cerebral hypoperfusion as a consequence of runoff into the left subclavian artery, the so-called subclavian steal phenomenon. Despite considerable interest in this phenomenon after its initial description by Reivich et al in 1961, 17 it was subsequently demonstrated that retrograde vertebral arterial flow occurs also in individuals without abnormalities of the brachiocephalic vessels, 18 and with obstruction of the arch but normal carotid and subclavian arteries. 14 Transection of the subclavian artery has been a component of several procedures for the repair or palliation of congenital heart defects, including the classic Blalock-Taussig shunt, repair of coarctation using the subclavian flap and repair of an aberrant subclavian artery causing oesophageal or tracheobronchial obstruction.…”

Section: Discussionmentioning

confidence: 99%

Rare forms of isolation of the subclavian artery: echocardiographic diagnosis and surgical considerations

et al. 1998

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Isolation of the subclavian artery is an unusual anomaly in which the subclavian artery arises not from the aortic arch but from a pulmonary artery via an arterial duct. Such isolation most often occurs with a right aortic arch, and in lesions frequently associated with a right arch, such as tetralogy of Fallot. Since 1994, we have undertaken surgery in four young infants with isolated subclavian arteries and unusual associated anomalies, including one with atrioventricular septal defect and common valvar orifice, two with interruption of a left aortic arch and one with interruption of a right aortic arch. In both patients with interrupted left arch, the isolated subclavian artery was diagnosed preoperatively by echocardiography. We emphasize the significant surgical issues.

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Section: Discussionmentioning

confidence: 99%

Rare forms of isolation of the subclavian artery: echocardiographic diagnosis and surgical considerations

et al. 1998

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“…24 Since the procedure of arteriography per se may result in local hemodynamic changes, the need for caution in assessing the significance of reversed vertebral flow has properly been stressed. 25 27 The purpose of this study was to confirn, by the use of an alternative technic, the authenticity of the radiographic appearances that form the basis for the diagnosis of the subelavian steal.…”

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Dynamics of the Collateral Circulation in Patients with Subclavian Steal

Marshall

Mantini

1965

Circulation

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The occurrence of retrograde blood flow in the ipsilateral vertebral artery of patients with proximal occlusion of the subclavian or innominate artery has been amply demonstrated by selective angiography. However, since flow artifacts may be induced by the physical or chemical effects of injections of contrast media, it was thought desirable to employ a different method for physiologic demonstration of the reversed flow. In the first case, cardio-green dye was injected into the innominate artery and a dilution curve was recorded from the left brachial artery. The early appearance of the dye (6 seconds) proved that a short circuit existed between the arterial injection and sampling sites, and confirmed the authenticity of the reversed vertebral flow shown in previous angiograms. In the second patient, who had symptoms of cerebral ischemia during exercise of the left (affected) arm, dye injected into the left carotid artery did not appear early in the brachial artery of the resting left arm. When it was injected during a period of intense hyperemia of the left arm, a fraction of the dye did appear early. This confirmed that, when the demand of the arm increased, blood was shunted to it not only from the vertebral-basilar system but also from the carotid system. The importance of anatomic factors was evident in another case in which absence of the anticipated retrograde flow was explained by the fact that the vertebral artery arose directly rectly from the aorta and did not communicate with the affected subclavian artery. These observations illustrate how radiographic and hemodynamic technics may usefully be combined to assess the effects of acquired diseases of the major blood vessels.

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Retrograde Flow in the Vertebral Artery

González¹

1965

Arch Surg

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Retrograde Vertebral Artery Blood Flow

Cited by 19 publications

References 8 publications

Rare forms of isolation of the subclavian artery: echocardiographic diagnosis and surgical considerations

Rare forms of isolation of the subclavian artery: echocardiographic diagnosis and surgical considerations

Dynamics of the Collateral Circulation in Patients with Subclavian Steal

Retrograde Flow in the Vertebral Artery

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