Relationship away from Blood Temperature, Viscosity, and Tension

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Relationship away from Blood Temperature, Viscosity, and Tension

The latest blood glucose quantity proportions have been made with an Accutrend GC glucometer (Boehringer Mannheim, Mannheim, Germany). At the least five measurements of blood sugar levels and you will simultaneous sized bloodstream and plasma viscosity have been made for everyone of 30 circumstances during the 0, 29, sixty, and you will 120 minute during the twenty two°C, immediately following ingestion from 75 g away from glucose.

Analytical Assessment

Outcome of the initial classification was indeed examined statistically into the Pupil t ensure that you Spearman correlation test. The connection between blood glucose focus and you will viscosity is examined mathematically by using the Scholar t decide to try, studies out of variance, and you can regression study.


When the blood temperature decreased from 36.5° to 22°C, the mean blood free flow time increased from to sec (%). According to Poiseuille’s equation, the blood flow rate decreases %, and for the compensation of this ischemic state, a % BP increase or 5.9% vasodilation is needed. If viscosity (? in the denominator of the equation) changes from 100 to (%), the flow rate Q would decrease = %. If viscosity increases %, the pressure (F1 ? F2) value (multiplier in the equation) must be increased with the same percentage to keep the equation constant. When the viscosity increases %, to keep the flow rate constant, the radius of vessel (initial) a 4 , must increase %. The calculation of this increased radius (finally) is a 4 final = 1.2613 ? a 4 initial. From this calculation, ?final = = 1.0597 and so, 5.97% vasodilation can be estimated.

In the event that heat enhanced off 36.5° to help you 39.5°C, the brand new bloodstream free flow big date reduced out of so you’re able to sec (%). Contained in this state, the newest circulation price improved %; predicated on Poiseuille’s picture, an excellent % reduction of BP or dos.71% vasoconstriction was wanted to keep the hemodynamic equilibrium ongoing.

The correlation between temperature and blood viscosity is r = ?0.84, P < .001 when all the differences at the three temperatures are evaluated together (Fig. 1). When all of the blood free flow time data for the three temperatures were evaluated together according to age, there was a negative correlation (r = ?0.1381 and P < .05); when the data were evaluated according to sex, it was found that the mean blood free flow time in women was % less than that in men (r = 0.3408, P < .001).

Effect of temperature on blood viscosity. When blood temperature decreases from 36.5° to 22°C, blood viscosity increases %. If temperature increases from 36.5° to 39.5°C, blood viscosity decreases %. To make a more accurate presentation in the graphic representation and statistics, instead of the “relative viscosity” value, blood free flow time in seconds (s) was used as data. When all of the differences at three temperatures are evaluated together, a negative correlation is seen between blood temperature and viscosity (r = ?0.84, P < .001).

When the temperature decreased from 36.5° to 22°C, plasma free flow time rose from 4.81 to 5.71 sec (%); with a temperature increase from 36.5° to 39.5°C, it decreased from 4.78 to 4.57 sec (4.99%). A negative correlation was seen (r = ?0.9342, P < .001) when the plasma flow times at the three temperatures were evaluated together. With a temperature decrease from 36.5° to 22°C, erythrocyte free flow time increased from to sec (%). When the temperature increased from 36.5° to 39.5°C, erythrocyte free flow time decreased from to sec (9.92%). There was a negative correlation between temperature and erythrocyte free flow time (r = ?0.62, P < .001). All of the blood, plasma viscosity, and erythrocyte deformability differences due to temperature were statistically significant (P < .001).

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