Morphological Risk Factors for Rupture of Small (&lt;7 mm) Posterior Communicating Artery Aneurysms

Lv, Nan; Feng, Zhengzhe; Wang, Chi; Cao, Wei; Fang, Yibin; Karmonik, Christof; Liu, Jianmin; Huang, Qinghai

doi:10.1016/j.wneu.2015.12.055

Cited by 40 publications

(26 citation statements)

References 24 publications

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“…This case control method cannot avoid location related bias. One previous study showed that SR was associated with rupture of small (<7 mm) PComAAs3, whereas SR exhibited no relationship between rupture of PComAAs4 and rupture of mirror PComAAs 12. Only one study has reported that SR is a risk factor associated with rupture of mirror PComAAs,13 which is in keeping with the results of the current study.…”

Section: Discussionsupporting

confidence: 91%

Morphological characteristics associated with the rupture risk of mirror posterior communicating artery aneurysms

Wang

Lee

Chen

et al. 2018

J NeuroIntervent Surg

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Section: Discussionsupporting

confidence: 91%

Morphological characteristics associated with the rupture risk of mirror posterior communicating artery aneurysms

Wang

Lee

Chen

et al. 2018

J NeuroIntervent Surg

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“…Tykocki et al found that inflow angle proved to be a relevant predictor in estimating the aneurysm risk rupture of the posterior cerebral circulation [24]. Similarly, Lv et al also reported that inflow angle was significantly different between ruptured and unruptured small posterior communicating artery aneurysms [25]. The most important finding of this study was that inflow angle was the only independent risk factor for both H&H grade and FG.…”

Section: Discussionsupporting

confidence: 62%

Risk factors predicting a higher grade of subarachnoid haemorrhage in small ruptured intracranial aneurysm (< 5 mm)

Tai¹,

Liu²,

Lv³

et al. 2019

Neurol Neurochir Pol.

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Aim. To identify the risk factors for clinical and radiographic grades of subarachnoid haemorrhage (SAH) in small (< 5 mm) intracranial aneurysms (SIAs). Material and methods. We retrospectively analysed patients with SIAs treated in our centre between February 2009 and June 2018. The clinical status was graded using the Hunt and Hess (H&H) score and the radiological severity of SAH was graded by Fisher grades (FG). The risk factors were determined using multivariate logistic regression analysis. results. A total of 160 patients with ruptured SIAs (< 5 mm) were included. In univariate analysis, smoking (P = 0.007), alcohol use (P = 0.048), aspirin use (P = 0.001), and higher size ratio (SR) (P = 0.001) were significantly associated with a higher H&H grade (3-5) in SIAs; and smoking (P = 0.019), aspirin use (P = 0.031), inflow angle < 90 degrees (P = 0.011), and aneurysm size (P = 0.039) were significantly associated with a higher FG score (3-4). In the adjusted multivariate analysis, previous SAH (

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“…They are one of the most common intracranial aneurysms, representing 9-17% of them [5,9,17,29]. Even though PcomA aneurysms are frequently encountered, there are only a few publications on the morphological features of these aneurysms [3,8,11,20,21,26,32].…”

Section: Introductionmentioning

confidence: 99%

“…We are lacking detailed angiographic analysis of PComA aneurysms in large series. There are indications that the PComA diameter, shorter ICA bifurcation-to-aneurysm distance, aneurysm orientation, larger size, neck diameter, aspect ratio, size ratio, inflow angle, and a bleb formation or irregular surface may be related to PComA aneurysms or their rupture [3,8,11,[20][21][22]26]. The previous findings partly contradict each other, which might be due to the relatively small case numbers (n = 9-173), differences in inclusion criteria and variable tested parameters in the published series.…”

Section: Introductionmentioning

confidence: 99%

CTA analysis and assessment of morphological factors related to rupture in 413 posterior communicating artery aneurysms

et al. 2017

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Posterior communicating artery (PcomA) aneurysms are frequently encountered, but there are few publications on their morphology. A growing number of aneurysms are incidental findings, which makes evaluation of rupture risk important. Our goal was to identify morphological features and anatomical variants associated with PComA aneurysms and to assess parameters related to rupture. We studied CT angiographies of 391 consecutive patients treated between 2000 and 2014 at a single institution. We determined clinically important morphological parameters and performed univariate and multivariate analysis. There were a total of 413 PComA aneurysms: 258 (62%) were ruptured and 155 (38%) unruptured. Ruptured PComA aneurysms had the potential to cause severe bleeding with IVH and/or temporal ICH (n = 170, 66% of ruptured). The main types of PComA origin were classified as follows: (1) separate (32%), (2) side by side (21%) and (3) a joint neck with the aneurysm (6%). After the multivariate logistic regression, the morphological parameters related to PComA aneurysm rupture were an irregular aneurysm dome, neck diameter, and aspect ratio >1.5. The most marked morphological features of the PComA aneurysms were: saccular nature (99%), infero-posterior dome orientation (42%), infrequency of large or giant aneurysms (4%), narrow neck compared to the aneurysm size, PComA originating directly from the aneurysm neck or the dome (28%), and fetal or dominant PComA on the side of the aneurysm (35%). There were location-related parameters that were more strongly associated with PComA aneurysm rupture than aneurysm size: an irregular aneurysm dome, larger diameter of the aneurysm neck and aspect ratio >1.5.

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Morphological Risk Factors for Rupture of Small (<7 mm) Posterior Communicating Artery Aneurysms

Cited by 40 publications

References 24 publications

Morphological characteristics associated with the rupture risk of mirror posterior communicating artery aneurysms

Morphological characteristics associated with the rupture risk of mirror posterior communicating artery aneurysms

Risk factors predicting a higher grade of subarachnoid haemorrhage in small ruptured intracranial aneurysm (< 5 mm)

CTA analysis and assessment of morphological factors related to rupture in 413 posterior communicating artery aneurysms

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