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Letter to the Editor
Humeral arterial access: An alternative route to the femoral artery in the endovascular treatment of acute stroke
El acceso arterial humeral: una vía alternativa al acceso femoral en el tratamiento endovascular del ictus agudo
J.A. Matias-Guiua,
Corresponding author
jordimatiasguiu@hotmail.com

Corresponding author.
, C. Serna-Candela, A. Gilb, L. Lopez-Iborb
a Servicio de Neurología, Unidad de Ictus y Unidad de Neurorradiología intervencionista, Hospital Clínico San Carlos, Madrid, Spain
b Unidad de Neurorradiología Intervencionista, Hospital Clínico San Carlos, Madrid, Spain
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    "textoCompleto" => "<span class="elsevierStyleSections"><p id="par0005" class="elsevierStylePara elsevierViewall">The femoral artery is the vascular access route most commonly used in cerebral endovascular procedures&#46; Nevertheless&#44; access at this site is impossible in a number of situations&#44; such as atheromatosis of the femoral arteries&#44; elongation of the supra-aortic trunks&#44; and anatomical variations of the aortic arch&#46;<a class="elsevierStyleCrossRef" href="#bib0005"><span class="elsevierStyleSup">1</span></a> When the femoral access cannot be used&#44; endovascular therapy may be delayed or even contraindicated according to some protocols&#46; Here&#44; we describe the case of 2 patients with ischaemic stroke who were able to undergo endovascular treatment by means of a brachial approach only&#46;</p><p id="par0010" class="elsevierStylePara elsevierViewall">Case 1&#58; male patient aged 45 years&#44; diagnosed with basilar artery thrombosis&#44; who arrived at the angiography room 6<span class="elsevierStyleHsp" style=""></span>h and 20<span class="elsevierStyleHsp" style=""></span>min after symptom onset&#46; Twenty minutes later&#44; a usable femoral access was obtained&#46; However&#44; even after multiple attempts&#44; the right vertebral artery could not be catheterised due to arterial elongations &#40;the left vertebral artery was hypoplastic&#41;&#46; We therefore used a right transbrachial approach and achieved basilar artery recanalisation 33<span class="elsevierStyleHsp" style=""></span>min after puncture&#46;</p><p id="par0015" class="elsevierStylePara elsevierViewall">Case 2&#58; male patient aged 71 years with a history of peripheral artery disease&#46; He arrived at the angiography room with an ischaemic stroke in the territory of the left sylvian artery due to an M1 proximal occlusion evolving over 4<span class="elsevierStyleHsp" style=""></span>h and 5<span class="elsevierStyleHsp" style=""></span>min&#46; Angiography of the aortoiliac axis through the femoral access showed pre-occlusive stenosis of the right iliac artery with occlusion of the left iliac artery&#46; After 4<span class="elsevierStyleHsp" style=""></span>h and 50<span class="elsevierStyleHsp" style=""></span>min of onset&#44; we gained access through the right brachial vein and then recanalised the medial cerebral artery in 49<span class="elsevierStyleHsp" style=""></span>min&#46;</p><p id="par0020" class="elsevierStylePara elsevierViewall">The transfemoral approach &#40;Seldinger technique&#41; is the standard access route for neurovascular surgical procedures&#44; as it allows the use of larger devices and provides better navigation capabilities&#46; The dose of radiation is lower&#44; and the femoral artery has a low thrombotic complication rate&#46; The axillary&#44; humeral and radial puncture sites are all included in the brachial approach&#46; The axillary artery allows use of 8 French introducers&#46; However&#44; the risk of haematoma is higher since haemostatic compression is more difficult at this site&#46; Although the humeral artery allows use of introducers of up to 6 French and offers easy access&#44; the risk of arterial thrombosis is high in prolonged procedures&#46; The radial artery allows use of introducers as large as 6 French&#44; but the risk of arterial thrombosis can be as high as 10&#37;&#46; Over the past few years&#44; we have read published results from isolated series in which transradial or transbrachial approaches were used for diagnostic cerebral arteriography&#44;<a class="elsevierStyleCrossRef" href="#bib0010"><span class="elsevierStyleSup">2</span></a> and for stents in stenosis of the anterior and posterior circulation&#46;<a class="elsevierStyleCrossRefs" href="#bib0015"><span class="elsevierStyleSup">3&#44;4</span></a> Using a radial or brachial access eliminates the risk of retroperitoneal haemorrhage and allows the patient to resume walking early on&#46; This alternative is used when vessel tortuosity makes it difficult or impossible to reach the vertebral artery via the femoral artery&#46; Nevertheless&#44; for purposes of the current endovascular treatment for acute stroke&#44; the smaller diameter of the brachial artery limits the gauge of the introducer normally used with 7 or 8 French balloon-tipped guide catheters needed for aspiration thrombectomy&#46; It also limits use of devices needing catheters with a larger internal lumen&#46; Other factors&#44; such as lack of experience with this approach and its increased complexity&#44; which may prolong the procedure&#44; also limit the use of brachial access as a first-choice surgical option in acute stroke&#46; Nevertheless&#44; there are no controlled clinical trials comparing the efficacy and safety of the different approaches&#46; The fact that new devices are being designed could change that situation&#46;</p><p id="par0025" class="elsevierStylePara elsevierViewall">Two extensive meta-analyses were recently published which compare transradial and transfemoral access for percutaneous coronary intervention procedures&#46;<a class="elsevierStyleCrossRefs" href="#bib0025"><span class="elsevierStyleSup">5&#44;6</span></a> Although the transradial approach leads to very few local complications&#44; the procedure failure rate is significantly higher than that of the transfemoral approach &#40;7&#46;2&#37; vs 2&#46;4&#37;&#41;&#46; This is due to either the difficulty of re-canalising the radial artery or subsequent problems with manipulating the catheter&#46;<a class="elsevierStyleCrossRef" href="#bib0025"><span class="elsevierStyleSup">5</span></a></p><p id="par0030" class="elsevierStylePara elsevierViewall">During the acute phase of stroke&#44; endovascular treatment may be delayed or even discontinued when the femoral approach does not allow access to the thrombosed cerebral artery &#40;aortoiliac occlusion&#44; severe vascular elongation&#44; etc&#46;&#41;&#46; In such cases&#44; we should consider the brachial approach as an alternative which could compensate for potential delays in providing this urgent treatment&#46; It has been proven that &#8220;time is brain&#8221; and neurovascular surgical procedures are often carried out within short time windows&#46; Furthermore&#44; atherosclerosis is a systemic disease&#44; and it is common for patients with ischaemic stroke to suffer from peripheral artery disease as well&#46;<a class="elsevierStyleCrossRef" href="#bib0035"><span class="elsevierStyleSup">7</span></a></p><p id="par0035" class="elsevierStylePara elsevierViewall">In the cases described here&#44; we could not use a femoral approach due to artery elongation or severe peripheral artery disease&#46; This delayed the endovascular procedure&#44; but the brachial approach enabled quick access to treatment&#46; Given that the increasing use of endovascular procedures during the acute phase of stroke and the need to begin treatment as soon as possible&#44; it is advisable to optimise all measures that potentially prevent treatment delay&#46; We should be aware that vascular access route is an important factor that needs to be evaluated in future studies&#46;</p></span>"
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ISSN: 21735808
Original language: English
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