Polunina A, Gugleta K, Kochkorov A, Katamay R, Flammer J, Orgül S
Ophthalmology Department, University Hospital Basel, Basel, Switzerland.
Klin Monbl Augenheilkd. 2011 Apr;228(4):302-5. doi: 10.1055/s-0031-1273211. Epub 2011 Apr 11.
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.
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.
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.
Subjectively and objectively, colder extremities are associated with higher CBF, possibly due to the redistribution of blood flow.
本研究旨在探讨一方面主观估计的手指温度与客观测量的手指温度之间的关系，另一方面脉络膜血流之间的关系。
我们测量了73名健康受试者的黄斑下脉络膜血流（CBF）。根据手脚冰凉的病史，他们被分为三组，分别报告“从不”、“有时”和“总是”有四肢发冷的情况。作为手指温度的客观测量指标，使用红外温度计（IRT）在指尖进行记录。基于分组选择并以血压和眼内压作为协变量对CBF进行方差分析，以及分析CBF与IRT之间的相关性。
“从不”四肢发冷组有37名受试者，“有时”四肢发冷组有20名受试者，“总是”四肢发冷组有16名受试者。平均年龄为44.2±12.9岁。三组的CBF分别为11.5±7.3 AU（任意单位）、13.6±6.1 AU和14.3±4.6 AU。方差分析的p值为0.04。CBF与IRT之间的Pearson相关系数R为 - 0.51，p < 0.001。
主观和客观上，四肢较冷与较高的CBF相关，可能是由于血流重新分布所致。
