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Relationship of Spontaneous Retinal Vein Pulsation with Ocular Circulatory Cycle

PURPOSE: To determine the timing of spontaneous venous pulsation (SVP) relative to the ocular circulatory cycle by using the movie tool of confocal scanning laser ophthalmoloscope. METHODS: A video recording of the fundus was obtained using a confocal scanning laser ophthalmoscope (Spectralis HRA, H...

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Autores principales: Kim, Mijin, Lee, Eun Ji, Seo, Je Hyun, Kim, Tae-Woo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4028232/
https://www.ncbi.nlm.nih.gov/pubmed/24844298
http://dx.doi.org/10.1371/journal.pone.0097943
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author Kim, Mijin
Lee, Eun Ji
Seo, Je Hyun
Kim, Tae-Woo
author_facet Kim, Mijin
Lee, Eun Ji
Seo, Je Hyun
Kim, Tae-Woo
author_sort Kim, Mijin
collection PubMed
description PURPOSE: To determine the timing of spontaneous venous pulsation (SVP) relative to the ocular circulatory cycle by using the movie tool of confocal scanning laser ophthalmoloscope. METHODS: A video recording of the fundus was obtained using a confocal scanning laser ophthalmoscope (Spectralis HRA, Heidelberg Engineering, Heidelberg, Germany) at 8 frames/s in 47 eyes (15 glaucoma patients and 32 glaucoma suspects) with visible pulsation of both the central retinal artery (CRA) and vein (CRV). The timing of the maximum and minimum diameters of the CRA (CRA(max) and CRA(min), respectively) and CRV (CRV(max) and CRV(min), respectively) was identified during four pulse cycles. The interval between CRV(min) and CRA(min), and between CRV(max) and CRA(max) was expressed as the number of frames and as a percentage of the ocular circulatory cycle. RESULTS: The ocular circulatory cycle (from one CRA(max) to the next) lasted 7.7±1.0 frames (958.8±127.2 ms, mean±SD), with a mean pulse rate of 62.6 beats/min. The diameter of the CRA was increased for 2.4±0.5 frames (301.9±58.8 ms) and decreased for 5.3±0.9 frames (656.9±113.5 ms). CRV(max) occurred 1.0±0.2 frames after CRA(max) (equivalent to 13.0% of the ocular circulatory cycle), while CRV(min) occurred 1.1±0.4 frames after CRA(min) (equivalent to 14.6% of the ocular circulatory cycle). CONCLUSIONS: During SVP, the diameter of the CRV began to decrease at early diastole, and the reduction persisted until early systole. This finding supports that CRV collapse occurs during ocular diastole.
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spelling pubmed-40282322014-05-21 Relationship of Spontaneous Retinal Vein Pulsation with Ocular Circulatory Cycle Kim, Mijin Lee, Eun Ji Seo, Je Hyun Kim, Tae-Woo PLoS One Research Article PURPOSE: To determine the timing of spontaneous venous pulsation (SVP) relative to the ocular circulatory cycle by using the movie tool of confocal scanning laser ophthalmoloscope. METHODS: A video recording of the fundus was obtained using a confocal scanning laser ophthalmoscope (Spectralis HRA, Heidelberg Engineering, Heidelberg, Germany) at 8 frames/s in 47 eyes (15 glaucoma patients and 32 glaucoma suspects) with visible pulsation of both the central retinal artery (CRA) and vein (CRV). The timing of the maximum and minimum diameters of the CRA (CRA(max) and CRA(min), respectively) and CRV (CRV(max) and CRV(min), respectively) was identified during four pulse cycles. The interval between CRV(min) and CRA(min), and between CRV(max) and CRA(max) was expressed as the number of frames and as a percentage of the ocular circulatory cycle. RESULTS: The ocular circulatory cycle (from one CRA(max) to the next) lasted 7.7±1.0 frames (958.8±127.2 ms, mean±SD), with a mean pulse rate of 62.6 beats/min. The diameter of the CRA was increased for 2.4±0.5 frames (301.9±58.8 ms) and decreased for 5.3±0.9 frames (656.9±113.5 ms). CRV(max) occurred 1.0±0.2 frames after CRA(max) (equivalent to 13.0% of the ocular circulatory cycle), while CRV(min) occurred 1.1±0.4 frames after CRA(min) (equivalent to 14.6% of the ocular circulatory cycle). CONCLUSIONS: During SVP, the diameter of the CRV began to decrease at early diastole, and the reduction persisted until early systole. This finding supports that CRV collapse occurs during ocular diastole. Public Library of Science 2014-05-20 /pmc/articles/PMC4028232/ /pubmed/24844298 http://dx.doi.org/10.1371/journal.pone.0097943 Text en © 2014 Kim et al http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.
spellingShingle Research Article
Kim, Mijin
Lee, Eun Ji
Seo, Je Hyun
Kim, Tae-Woo
Relationship of Spontaneous Retinal Vein Pulsation with Ocular Circulatory Cycle
title Relationship of Spontaneous Retinal Vein Pulsation with Ocular Circulatory Cycle
title_full Relationship of Spontaneous Retinal Vein Pulsation with Ocular Circulatory Cycle
title_fullStr Relationship of Spontaneous Retinal Vein Pulsation with Ocular Circulatory Cycle
title_full_unstemmed Relationship of Spontaneous Retinal Vein Pulsation with Ocular Circulatory Cycle
title_short Relationship of Spontaneous Retinal Vein Pulsation with Ocular Circulatory Cycle
title_sort relationship of spontaneous retinal vein pulsation with ocular circulatory cycle
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4028232/
https://www.ncbi.nlm.nih.gov/pubmed/24844298
http://dx.doi.org/10.1371/journal.pone.0097943
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