Presence of vascular loops entering internal acoustic channel may increase risk of Sudden sensorineural hearing loss and reduce recovery of these patients

Ezerarslan, Hande; Sanhal, Ebru Özan; Kurukahvecioğlu, Selma; Ataç, Gökçe Kaan; Kocatürk, Sinan

doi:10.1002/lary.26054

Cited by 13 publications

(32 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The study concluded that patients with intrameatal compression should be offered microvascular decompression prior to the development of hearing loss. Ezerarslan, et al found that a type IIB branching pattern is more common in patients with an idiopathic sudden sensorineural hearing loss, and unlike non-type IIB, branching patterns are associated with unresponsiveness to standard oral corticosteroid therapy [ 19 ].…”

Section: Discussionmentioning

confidence: 99%

“…A study correlating cadaveric with MRI findings concluded that 3D-FT-CISS MRI provided better imaging than 3D time-of-flight (TOF) magnetic resonance angiography (MRA) for analyzing the relationship between the AICA and the facial-vestibulocochlear nerve complex [ 27 ]. Three-dimensional fast imaging employing steady-state acquisition (3D FIESTA) MRI can be used to obtain detailed thin section images with high spatial resolution so that the cranial nerves can be depicted clearly within the cisternal spaces [ 19 ].…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Anterior Inferior Cerebellar Arteries Juxtaposed with the Internal Acoustic Meatus and Their Relationship to the Cranial Nerve VII/VIII Complex

Alonso

Kassem

Iwanaga

et al. 2017

Cureus

View full text Add to dashboard Cite

Vascular loops in the cerebellopontine angle (CPA) and their relationship to cranial nerves have been used to explain neurological symptoms. The anterior inferior cerebellar artery (AICA) has variable branches producing vascular loops that can compress the facial cranial nerve (CN) VII and vestibulocochlear (CN VIII) nerves. AICA compression of the facial-vestibulocochlear nerve complex can lead to various clinical presentations, including hemifacial spasm (HFS), tinnitus, and hemiataxia. The formation of arterial loops inside or outside of the internal auditory meatus (IAM) can cause abutment or compression of CN VII and CN VIII.Twenty-five (50 sides) fresh adult cadavers underwent dissection of the cerebellopontine angle in the supine position. In regard to relationships between the AICA and the nerves of the facial/vestibulocochlear complex, 33 arteries (66%) traveled in a plane between the facial/nervus intermedius nerves and the cochlear and vestibular nerves. Five arteries (10%) traveled below the CN VII/VIII complex, six (12%) traveled posterior to the nerve complex, four (8%) formed a semi-circle around the upper half of the nerve complex, and two (4%) traveled between and partially separated the nervus intermedius and facial nerve proper. Our study found that the majority of AICA will travel in a plane between the facial/nervus intermedius nerves and the cochlear and vestibular nerves. Although the relationship between the AICA and porus acusticus and AICA and the nerves of the CN VII/VIII complex are variable, based on our findings, some themes exist. Surgeons should consider these with approaches to the cerebellopontine angle.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Anterior Inferior Cerebellar Arteries Juxtaposed with the Internal Acoustic Meatus and Their Relationship to the Cranial Nerve VII/VIII Complex

Alonso

Kassem

Iwanaga

et al. 2017

Cureus

View full text Add to dashboard Cite

show abstract

“…A recent publication looked into the potential role of NVC type and SSNHL. 6 The MRI scans of the side with SSNHL of 68 patients were compared to both sides of normal controls. One particular branching pattern of the AICA loop (type IIb) was more likely to be associated with SSNHL, and it was also associated with poorer prognosis compared to the other studied branching patterns.…”

Section: Discussionmentioning

confidence: 99%

“…Several studies have analyzed the role NVCs and otologic symptoms, including meta‐analyses and systemic reviews . However, as far as we know, only one study on the correlation between NVCs and unilateral SSNHLs has been published in the English literature …”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The association between auditory nerve neurovascular conflict and sudden unilateral sensorineural hearing loss

Ungar

Brenner‐Ullman

Cavel

et al. 2018

Laryngoscope Investig Oto

View full text Add to dashboard Cite

HypothesisThere may be an association between a neurovascular conflict (NVC) of the auditory nerve and unilateral sudden sensorineural hearing loss (SSNHL).BackgroundCompression of cranial nerves by vascular structures can lead to significant symptomatology that may require surgical decompression. Notable examples are trigeminal neuralgia and hemifacial spasm. Magnetic resonance imaging (MRI) is part of the workup for SSNHL, and it may depict an NVC of the auditory nerve. Here we look into the association between this NVC and unilateral SSNHL.MethodsA retrospective analysis was performed on all consecutive patients with unilateral SSNHL who underwent an MRI scan in our medical center. The data collected included age, gender, side and severity of hearing loss, and accompanying complaints. Each MRI scan was reviewed by a neuroradiologist who was unaware of hearing loss laterality. The presence, side, extent, and location of a potential NVC involving the auditory nerve were determined, and a correlation between radiological findings and auditory parameters was sought.ResultsFifty‐four patients (male‐to‐female ratio 26:28, age range 25–80 years) were enrolled into the study. Fourteen of them (25.9%) had normal MRI findings. Twenty‐six patients had a unilateral NVC, and the pathology was ipsilateral to the side of hearing loss in only 12 of them (46.2%). Fourteen (25.9%) patients had MRI findings of bilateral NVCs. There was no significant correlation between the side of the SSNHL and any radiological findings (P = .314).ConclusionThe data presented herein support the conclusion that there is no association between CN8 NVC and unilateral SSNHL.Level of Evidence2b.

show abstract

Vascular loops in cerebellopontine angle in patients with unilateral idiopathic sudden sensorineural hearing loss: Evaluations by three radiological grading systems

Leng

Lei

Liu

et al. 2022

Laryngoscope Investig Oto

View full text Add to dashboard Cite

Objective We aimed to investigate the impact of the position, configuration and neurovascular contact of the anterior inferior cerebellar artery (AICA) in cerebellopontine angle (CPA) and internal auditory canal (IAC) on the clinical features of patients with unilateral idiopathic sudden sensorineural hearing loss (ISSNHL). Methods One hundred and thirty‐six patients with unilateral ISSNHL were enrolled. All patients received detailed history inquiry and standard treatments. Pure tone audiometry and magnetic resonance imaging (MRI) of CPA‐IAC were performed. The MRI findings of both ears were evaluated by the Chavda, Gorrie and Kazawa systems. The association between radiological findings and clinical data were analyzed. Results (1) No significant interaural difference in the position, configuration and neurovascular contact of AICA was observed. (2) There was no significant association between the AICA loop and concomitant vertigo or pre‐treatment audiometric configuration in the affected ear. (3) Concomitant tinnitus seemed to be affected by the configuration of AICA categorized by Kazawa system, while the Chavda and Gorrie classification of AICA loop was unassociated with tinnitus. (4) Hearing outcomes were not compromised by the position or configuration of AICA based on the Chavda and Kazawa systems. Patients with Gorrie type B tended to have better hearing recovery than those with type C. Conclusions In patients with ISSNHL, the position, configuration and neurovascular contact of AICA in the CPA‐IAC were unassociated with the side of hearing loss, audiometric configurations, or concomitant vertigo. The neurovascular contact graded by Gorrie system might be associated with hearing outcomes.

show abstract

Presence of vascular loops entering internal acoustic channel may increase risk of Sudden sensorineural hearing loss and reduce recovery of these patients

Abstract: 3b. Laryngoscope, 127:210-215, 2017.

Cited by 13 publications

References 21 publications

Anterior Inferior Cerebellar Arteries Juxtaposed with the Internal Acoustic Meatus and Their Relationship to the Cranial Nerve VII/VIII Complex

Anterior Inferior Cerebellar Arteries Juxtaposed with the Internal Acoustic Meatus and Their Relationship to the Cranial Nerve VII/VIII Complex

The association between auditory nerve neurovascular conflict and sudden unilateral sensorineural hearing loss

Vascular loops in cerebellopontine angle in patients with unilateral idiopathic sudden sensorineural hearing loss: Evaluations by three radiological grading systems

Contact Info

Product

Resources

About