Observations of retinal vessels during intermittent pressure-augmented retrograde cerebral perfusion in clinical cases

Endo, Hidehito; Ishii, Hikaru; Takahashi, Yu; Inaba, Yusuke; Nishino, Yoshifumi; Hirakata, Akito; Kubota, Hiroshi

doi:10.1093/icvts/ivw120

Cited by 8 publications

(4 citation statements)

References 17 publications

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“…Pagano and colleagues, in an elegant study using Technetium 99 brain perfusion scan, were able to show cerebral flow during RCP in three patients (18). More recently, Endo and coauthors using a modified RCP technique and a retinal camera reported flow in the retinal vessels during RCP in 8 cases of total arch replacement (19).…”

Section: Discussionmentioning

confidence: 99%

Retrograde perfusion through superior vena cava reaches the brain during circulatory arrest

et al. 2018

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Section: Discussionmentioning

confidence: 99%

Retrograde perfusion through superior vena cava reaches the brain during circulatory arrest

et al. 2018

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“…Ono et al attempted retinal vessel fluorescein angiography during RCP in human case, and confirmed the blood flow [ 9 ]. Endo et al observed the retinal vessel with fundus camera [ 10 ]. They calculated the ratio of the retinal vessels to the optic disc, and compared quantitatively to verify that RCP under HCA increased the ratio of the retinal vessels than only HCA.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of cerebral circulation during retrograde perfusion by laser speckle flowgraphy

Kimura

Kanda

Toyama

et al. 2016

Gen Thorac Cardiovasc Surg

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Laser speckle flowgraphy (LSFG) is an ophthalmologic equipment that qualitatively detects the blood flow of the optic nerve head, which is known to be related with cerebral microcirculation. LSFG can also measure the mean blur rate, which quantitatively calculates the blood flow. We aimed to assess the utility of LSFG in the evaluation of cerebral perfusion during aortic surgery under hypothermic circulatory arrest with retrograde and antegrade cerebral perfusion. Two patients underwent total arch replacement for aneurysm. The blood flow of the optic nerve head was monitored with LSFG and the mean blur rate value was measured during the surgery. The LSFG could detect the blood flow quantitatively in the optic nerve head during both retrograde and antegrade cerebral perfusion; and the value was correlated with rSO2 value.

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“…The retinal arterioles and venules were outlined in different colors and measured (the green and yellow arrows, Figure 2). All traced arterioles and venules were divided into at least ten sections, and the relative arteriolar-to-venular diameter ratio was calculated as the mean value of the diameter of the arteriolar-to-venular/the average diameter of the optic disc [16,17].…”

Section: Ai-based Image Analyzer For Quantitative Measurement Of the ...mentioning

confidence: 99%

Distinctive Imaging Characteristics of Retinal and Cerebral Vessels between Central and Branch Retinal Vein Occlusion by MRI and AI-Based Image Analyzer

Wang,

Li,

Zhang

et al. 2024

Diagnostics

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Retinal vessels have been good predictive and prognostic imaging biomarkers for systemic or eye diseases. Numerous studies have shown that the two retinal vein occlusion entities may correlate with cardiovascular and cerebrovascular events or primary open-angle glaucoma. This study aims to investigate if there is a disparity in the correlations between branch RVO (BRVO) and central RVO (CRVO) with systemic disorders or POAG, thus explaining the pathogenic difference between BRVO and CRVO. This retrospective case-control study enrolled 59 RVO subjects (118 eyes), including 25 CRVO and 34 BRVO subjects, who received routine eye and brain MRI examinations. The geometric characteristics of the caliber of the retinal and cerebral blood vessels and the optic nerve subarachnoid space width (ONSASW) were measured. Multivariable logistic regression analysis showed that ONSASW at 3 mm behind the globe (p = 0.044) and the relative retinal venular calibers (p = 0.031) were independent risk factors for the CRVO-affected eyes group in comparison with the BRVO-affected eyes group after adjusting for age, duration of hypertension, BMI, and IOP. In the CRVO-affected eyes, narrower relative retinal arteriolar calibers (p = 0.041) and wider relative venular calibers (p = 0.011) were independent risk factors compared with the CRVO-contralateral normal eyes when adjusting for IOP. We concluded that BRVO may be more associated with cerebrovascular diseases, and CRVO may be correlated with primary angle glaucoma. The geometric characteristics difference between the retinal and cerebrovascular may explain the pathological difference between CRVO and BRVO.

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Observations of retinal vessels during intermittent pressure-augmented retrograde cerebral perfusion in clinical cases

Abstract: Our study suggested that intermittently augmented venous pressure at 45 mmHg opened the cerebrovenous vessels and enabled adequate cerebral perfusion. IPA-RCP may provide more effective cerebral perfusion under HCA in humans.

Cited by 8 publications

References 17 publications

Retrograde perfusion through superior vena cava reaches the brain during circulatory arrest

Retrograde perfusion through superior vena cava reaches the brain during circulatory arrest

Evaluation of cerebral circulation during retrograde perfusion by laser speckle flowgraphy

Distinctive Imaging Characteristics of Retinal and Cerebral Vessels between Central and Branch Retinal Vein Occlusion by MRI and AI-Based Image Analyzer

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