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Relationships out-of Blood Heat, Viscosity, and Tension

Relationships out-of Blood Heat, Viscosity, and Tension

The fresh blood sugar concentration specifications have been made with an enthusiastic Accutrend GC glucometer (Boehringer Mannheim, Mannheim, Germany). At the very least five sized blood glucose and simultaneous measurements of blood and you may plasma viscosity have been made for all of 29 circumstances within 0, 30, 60, and 120 min during the twenty two°C, once ingestion away from 75 grams away from sugar.

Analytical Evaluation

Performance of the first class was in fact examined mathematically on the Scholar t make sure Spearman correlation decide to try. The connection anywhere between blood sugar attention and viscosity is analyzed mathematically utilising the Beginner t sample, investigation away from variance, and you may regression data.


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.

When the temperature enhanced off thirty-six.5° to 39.5°C, the new blood totally free flow go out decreased off to help you sec (%). Contained in this county, the fresh new blood supply speed enhanced %; centered on Poiseuille’s formula, good % reduced total of BP otherwise 2.71% vasoconstriction is actually must secure the hemodynamic harmony 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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