title: Oxygen Saturation in Closed-Globe Blunt Ocular Trauma.
abstract: Purpose. To evaluate the oxygen saturation in retinal blood vessels in patients after closed-globe blunt ocular trauma.Design. Retrospective observational case series.Methods. Retinal oximetry was performed in both eyes of 29 patients with unilateral closed-globe blunt ocular trauma. Arterial oxygen saturation (SaO2), venous oxygen saturation (SvO2), arteriovenous difference in oxygen saturation (SO2), arteriolar diameter, venular diameter, and arteriovenous difference in diameter were measured. Association parameters including age, finger pulse oximetry, systolic pressure, diastolic pressure, and heart rate were analyzed.Results. The mean SaO2in traumatic eyes (98.1% ± 6.8%) was not significantly different from SaO2in unaffected ones (95.3% ± 7.2%) (p= 0.136). Mean SvO2in traumatic eyes (57.1% ± 10.6%) was significantly lower than in unaffected ones (62.3% ± 8.4%) (p= 0.044). The arteriovenous difference in SO2in traumatic eyes (41.0% ± 11.2%) was significantly larger than in unaffected ones (33.0% ± 6.9%) (p= 0.002). No significant difference was observed between traumatic eyes and unaffected ones in arteriolar (p= 0.249) and venular diameter (p= 0.972) as well as arteriovenous difference in diameter (p= 0.275).Conclusions. Oxygen consumption is increased in eyes after cgBOT, associated with lower SvO2and enlarged arteriovenous difference in SO2but not with changes in diameter of retinal vessels.
authors.affiliation: State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, 54 South Xianlie Road, Guangzhou 510060, China.
authors.forename: Chongde
authors.initials: C
authors.lastname: Long
authors.affiliation: Sun Yat-sen Memorial Hospital, Sun Yat-sen University, 107 Yan Jiang West Road, Guangzhou, China.
authors.forename: Xin
authors.initials: X
authors.lastname: Wen
authors.affiliation: State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, 54 South Xianlie Road, Guangzhou 510060, China.
authors.forename: Liu-Xue-Ying
authors.identifier: 0000-0001-5388-301X
authors.initials: LX
authors.lastname: Zhong
authors.affiliation: State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, 54 South Xianlie Road, Guangzhou 510060, China.
authors.forename: Yongxin
authors.identifier: 0000-0002-2844-7985
authors.initials: Y
authors.lastname: Zheng
authors.affiliation: State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, 54 South Xianlie Road, Guangzhou 510060, China.
authors.forename: Qianying
authors.initials: Q
authors.lastname: Gao
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001794:Blood Pressure; D003971:Diastole; D005131:Eye Injuries / Q000503:physiopathology*; D006339:Heart Rate; D006801:Humans; D007429:Intraocular Pressure / Q000502:physiology; D008875:Middle Aged; D010092:Oximetry / Q000379:methods; D010100:Oxygen / Q000737:chemistry*; D010101:Oxygen Consumption; D011446:Prospective Studies; D012160:Retina / Q000503:physiopathology; D012189:Retrospective Studies; D013599:Systole; D014947:Wounds and Injuries / Q000503:physiopathology*; D014949:Wounds, Nonpenetrating / Q000503:physiopathology*; D055815:Young Adult
chemical_list: D010100:Oxygen