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Auteur Rex Ballinger
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Ajouter le résultat dans votre panier Affiner la rechercheChange in Intraocular Pressure and Ocular Perfusion Pressure Due to Trendelenburg Positioning / Lauren Ristin in OVS : Optometry & Vision Science, vol. 97, 10 (Octobre 2020)
[article]
in OVS : Optometry & Vision Science > vol. 97, 10 (Octobre 2020)
Titre : Change in Intraocular Pressure and Ocular Perfusion Pressure Due to Trendelenburg Positioning Type de document : article de périodique Auteurs : Lauren Ristin ; Sarah Dougherty Wood ; Michael Sullivan-Mee ; Andrew Rixon ; Brett Bence ; Rex Ballinger Année de publication : 2020 Langues : Français (fre) Descripteurs (mots clés) : [Thésaurus Mesh]Collecte de données
[Thésaurus Mesh]Position déclive
[Thésaurus Mesh]Pression sanguine
[Thésaurus HELB]:Optique:pression intraoculaireMots-clés : relations dynamiques pression de perfusion oculaire moyenne Résumé : SIGNIFICANCE: This study increases foundational knowledge about the dynamic relationships between intraocular pressure (IOP), blood pressure (BP), and mean ocular perfusion pressure (MOPP) in the setting of steep Trendelenburg positioning and may inform medical decision making for patients in which this positioning is planned. PURPOSE: The purpose of this study was to explore the demographic and clinical factors related to IOP, MOPP, and BP change during Trendelenburg positioning in a large sample of subjects. METHODS: A single-cohort interventional study was conducted at the American Academy of Optometry 2017 annual meeting. Baseline demographic data were collected by a secure survey tool. IOP and BP were then measured while seated and again after 1 and 2 minutes in a steep Trendelenburg position. Raw and percentage differences for each variable were compared between time points, and regression analyses demonstrated factors related to change in IOP, BP, and MOPP during steep Trendelenburg positioning. RESULTS: Median IOP increased from 16.3 mmHg (13.3 to 18.3 mmHg) at baseline to 25.0 mmHg (21.7 to 28.7 mmHg) at 1 minute after assuming the Trendelenburg position. More than 95% of individual eyes exhibited an IOP increase of at least 10%, and 45% had an IOP increase of 10 mmHg or greater. Correspondingly, MOPP fell from 50.3 mmHg (43.4 to 55.4 mmHg) at baseline to 36.3 mmHg (31.9 to 43.3 mmHg). Mean ocular perfusion pressure decreased by at least 10 in 90% of eyes. In multivariate regression analysis, factors independently related to percentage IOP increase were increasing weight, less myopic refractive error, lower baseline pulse, and lower baseline IOP (total r 2 = 0.31, P < .001). Conversely, weight was the only variable independently related to percent MOPP change, and this relationship was weak (r 2 = 0.05, P = .008). CONCLUSIONS: Our results confirm that steep Trendelenburg positioning causes an increase in IOP and a decrease in MOPP in almost all eyes. Considering the identified causative factors will inform clinical education and provide foundational knowledge for future investigations Permalink : https://bibliotheque.helb-prigogine.be/opac_css/index.php?lvl=notice_display&id= [article]Exemplaires
Cote Support Localisation Section Disponibilité aucun exemplaire Veterans affairs low-vision intervention trial II : one-year follow-up / Joan Stelmack in OVS : Optometry & Vision Science, vol. 96, 10 (Octobre 2019)
[article]
in OVS : Optometry & Vision Science > vol. 96, 10 (Octobre 2019)
Titre : Veterans affairs low-vision intervention trial II : one-year follow-up Type de document : article de périodique Auteurs : Joan Stelmack ; Charlene Tang ; Yongliang Wei ; Kenneth Rose ; Rex Ballinger ; Olga Whitman ; Connie Chronister ; Robert Massof, Auteur Année de publication : 2019 Langues : Français (fre) Descripteurs (mots clés) : [Thésaurus Mesh]:D:Dégénérescence maculaire:Dégénérescence maculaire / thérapie
[Thésaurus Mesh]Collecte de données
[Thésaurus Mesh]Dégénérescence maculaire
[Thésaurus Mesh]Recherche biomédicale
[Thésaurus Mesh]Vision faible
[Thésaurus HELB]:Optique:rééducation visuelleRésumé : SIGNIFICANCE One-year follow-up is recommended for patients with macular diseases to assess functional changes associated with disease progression and to modify low-vision (LV) treatment plans, if indicated.
PURPOSE The purpose of this study was to observe 255 patients with macular diseases who received LV rehabilitation (rehabilitation with a therapist) or basic LV services (LV devices dispensed without therapy) during Veterans Affairs Low-vision Intervention Trial II after the trial ended at 4 months until 1-year follow-up.
METHODS The primary outcome measure was visual ability measured with the 48-item Veterans Affairs Low-vision Visual Functioning Questionnaire. Mean visual ability scores for the treatment groups were compared from baseline to 4 months, 4 months to 1 year, and baseline to 1 year. Changes from baseline to 1 year were compared between the two groups. Predictors of changes in visual ability from 4 months to 1 year were assessed using linear regression.
RESULTS Both groups experienced significant improvement in all measures of visual ability from baseline to 1 year but lost visual reading ability during the observation period (LV rehabilitation group, −0.64 [1.2] logit; 95% confidence interval [CI], −0.84 to −0.44 logit; basic LV group, −0.63 [1.4] logit; 95% CI, −0.88 to −0.38 logit), and overall visual ability was lost in the LV rehabilitation group (−0.20 [0.8] logit; 95% CI, −0.34 to −0.06 logit). Loss of visual reading ability in both groups from 4 months to 1 year was predicted by reading ability scores at 4 months, loss of near visual acuity from 4 months to 1 year, and lower EuroQol-5D utility index scores; loss of overall visual ability in the LV rehabilitation group during the same time period was predicted by lower overall ability scores at 4 months.
CONCLUSIONS Visual ability significantly improved in all groups from baseline to 1 year. However, the loss of visual reading ability experienced by both groups from 4 months to 1 year reduced the benefit of the services provided.Permalink : https://bibliotheque.helb-prigogine.be/opac_css/index.php?lvl=notice_display&id= [article]Exemplaires
Cote Support Localisation Section Disponibilité aucun exemplaire