Endovascular treatment

Endovascular interventions have become an essential part of a neurosurgeon's practice.

The need for emergent neurosurgical procedures is very low among patients undergoing intracranial neuroendovascular procedures. Survival in such patients despite emergent neurosurgical procedures is quite low 1).

A study suggest potential gaps in the training of neurosurgery residents with regard to endovascular neurosurgery. In an era of minimally invasive therapies, changes in residency curricula may be needed to keep pace with the ever-changing field of neurosurgery 2)

The femoral artery is usually punctured below the inguinal ligament for neuroendovascular procedures with a 18-19 gauge needle.

To place the wire with Seldinger technique in the artery with removal of the percutaneous needle and the introduction of the sheath 3).

The sheath is removed at the end of the procedure, then manual compression should be performed for 10-20 minutes to achieve hemostasis.

This minimizes the risk of local and embolic complications.

Remove the sheath only when the Activated Partial Thromboplastin Time (aPTT) has returned to normal (< 36 secs) or when the Activated Clotting Time (ACT) is < 170.

see femoral arterial closure device.

Endovascular treatment by mechanical thrombectomy will be increasingly chosen as an adjunctive or alternative to intravenous thrombolysis. To apply this form of stroke treatment is associated with the challenge of optimal periinterventional treatment. The patient has to be identified, counselled, prepared, monitored, cardiovascularly stabilized, possibly sedated and ventilated, and postprocedurally treated in the optimal way. However, most aspects of periinterventional treatment have as yet not been clarified and require prospective research. Among these, the question of general anesthesia vs conscious sedation has received most attention and may be the most crucial one. Based on a great amount of retrospective data, it appears reasonable to start the intervention under conscious sedation of the non-intubated patient with standby measures for emergent intubation, until prospective randomized trials have clarified that issue. Periinterventional management will significantly affect the success of recanalization 4).

The expansion of endovascular techniques for intracranial aneurysms has led to a global decrease in vascular neurosurgery activity. This situation might impact neurosurgeons' level of expertise, even though they all might have to deal with this surgically challenging pathology, and pleads for the use of training and simulation programmes dedicated to neurovascular surgery 5).

A stable intracranial guide catheter position within the intracranial vasculature is critical for safe, successful endovascular treatment




Neuroendovascular treatment in Japan is increasing and the outcomes of such therapy are clinically acceptable. Details of each type of treatment will be investigated in sub-analyses of the database 6).

The risk of hemorrhage must be considered when using anticoagulation and antiplatelet therapy in patients requiring ventriculostomy. Interventionalists must not only work closely with neurosurgeons when it is anticipated that a ventriculostomy may be needed but also ensure that there is good communication with the neurosurgical team during the postprocedural period 7).

Khatri R, Ansar M, Sultan F, Chaudhry SA, Khan AA, Rodriguez GJ, Tummala RP, Qureshi AI. Requirements for emergent neurosurgical procedures among patients undergoing neuroendovascular procedures in contemporary practice. AJNR Am J Neuroradiol. 2012 Mar;33(3):465-8. doi: 10.3174/ajnr.A2787. Epub 2011 Nov 24. PubMed PMID: 22116112.
Chalouhi N, Zanaty M, Tjoumakaris S, Manasseh P, Hasan D, Bulsara KR, Starke RM, Lawson K, Rosenwasser R, Jabbour P. Preparedness of neurosurgery graduates for neuroendovascular fellowship: a national survey of fellowship programs. J Neurosurg. 2015 Apr 3:1-7. [Epub ahead of print] PubMed PMID: 25839924.
Osborn AG, Diagnostic Cerebral Angiography.Lippincott Williams & Wilkins, Philadelphia, PA: 1999.
Bösel J. Management of the Interventional Stroke Patient. Curr Treat Options Neurol. 2015 Oct;17(10):45. doi: 10.1007/s11940-015-0376-z. PubMed PMID: 26387814.
Le Reste PJ, Henaux PL, Riffaud L, Haegelen C, Morandi X. Influence of cumulative surgical experience on the outcome of poor-grade patients with ruptured intracranial aneurysm. Acta Neurochir (Wien). 2015 Jan;157(1):1-7. doi: 10.1007/s00701-014-2241-3. Epub 2014 Sep 25. PubMed PMID: 25248329.
Sakai N, Yoshimura S, Taki W, Hyodo A, Miyachi S, Nagai Y, Sakai C, Satow T, Terada T, Ezura M, Hyogo T, Matsubara S, Hayashi K, Fujinaka T, Ito Y, Kobayashi S, Komiyama M, Kuwayama N, Matsumaru Y, Matsumoto Y, Murayama Y, Nakahara I, Nemoto S, Satoh K, Sugiu K, Ishii A, Imamura H. Recent Trends in Neuroendovascular Therapy in Japan: Analysis of a Nationwide Survey-Japanese Registry of Neuroendovascular Therapy (JR-NET) 1 and 2. Neurol Med Chir (Tokyo). 2013 Dec 27. [Epub ahead of print] PubMed PMID: 24390188.
Ross IB, Dhillon GS. Ventriculostomy-related cerebral hemorrhages after endovascular aneurysm treatment. AJNR Am J Neuroradiol. 2003 Sep;24(8):1528-31. PubMed PMID: 13679264.
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