When the mean value of blood glucose increased from 100 to 400 mg/dL, viscosity increased 25% (r = 0.59, P =. There is a correlation between total data for temperatures and viscosities (r = −0.84, P <. Erythrocyte deformability increase of 9.92% and plasma viscosity decrease of 4.99% arose from the temperature rise. This caused 11.15% decrease in blood flow rate, and 11.15% decrease in BP, according to the equation. When temperature increased from 36.5° to 39.5☌, blood viscosity decreased 10.38%. Also, a 34.73% decrease in erythrocyte deformability and 18.71% increase in plasma viscosity were seen. According to the Hagen-Poiseuille equation, the required BP increase for compensation of the resulting tissue ischemia was 20.72%. This increase resulted in a 20.72% decrease in blood flow rate. When temperature decreased from 36.5☌ to 22☌, blood viscosity increased 26.13%. Statistical evaluations of the data were made with regression analysis, Student t test, Spearman's correlation, and analysis of variance. Parameters were determined with capillary viscometer and glucometer at 22☌, 36.5☌, and 39.5☌ in healthy subjects, and at 22☌ on diabetic patients during OGTT with 75 g of glucose. With simple random sampling method, 53 healthy and 29 diabetes mellitus (DM) type II subjects were selected. We planned a study to research the relations among blood pressure (BP), viscosity, and temperature in healthy subjects and among BP, viscosity, and glucose in diabetics.
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