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Abstract #45483 Published in IGR 13-2
Relationship between peripheral blood flow in extremities and choroidal circulation
Polunina A; Gugleta K; Kochkorov A; Katamay R; Flammer J; Orgül SKlinische Monatsblätter für Augenheilkunde 2011; 228: 302-305
BACKGROUND: The aim of this study was to explore the relationship between subjectively estimated and objectively measured finger temperature on the one, and choroidal blood flow on the other side. PATIENTS AND METHODS: We measured submacular choroidal blood flow (CBF) in 73 healthy subjects. Based on the history of cold hands and feet, they were divided in three groups, reporting "never", "sometimes" and "always" having cold extremities. As an objective measure of finger temperature, it was recorded at the fingertips with an infrared thermometer (IRT). Analysis of variance for CBF based on the group selection and with blood and intraocular pressures as covariates was performed, as well as the correlation between CBF and IRT. RESULTS: There were 37 subjects in the group with "never" cold extremities, 20 in the group with "sometimes", and 16 subjects in the group with "always" cold extremities. Average age was 44.2 ± 12.9 years. CBF was 11.5 ± 7.3 AU (arbitrary units), 13.6 ± 6.1 AU and 14.3 ± 4.6 AU in the three groups, respectively. The ANOVA p-value was 0.04. Pearson's R for correlation between CBF and IRT was - 0.51, p < 0.001. CONCLUSION: Subjectively and objectively, colder extremities are associated with higher CBF, possibly due to the redistribution of blood flow.
Ophthalmology Department, University Hospital Basel, Basel, Switzerland.
Classification:
6.11 Bloodflow measurements (Part of: 6 Clinical examination methods)
2.12 Choroid, peripapillary choroid, peripapillary atrophy (Part of: 2 Anatomical structures in glaucoma)
