Relationships away from Bloodstream Heat, Viscosity, and you may Stress

Murugan R S Murugan R S folomojo staff

Brand new blood glucose levels attention specifications have been made with an enthusiastic Accutrend GC glucometer (Boehringer Mannheim, Mannheim, Germany). About four measurements of blood glucose and you will multiple sized blood and plasma viscosity have been made for everybody of 29 times within 0, 31, 60, and 120 min within 22°C, immediately following consumption from 75 g out of glucose.

Mathematical Assessment

Outcome of the initially category had been analyzed mathematically toward Beginner t make sure Spearman relationship sample. The relationship ranging from blood glucose attention and you can viscosity was analyzed mathematically utilizing the College student t take to, research away from difference, and you can regression studies.

Results

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 (final) is a 4 final = 1.2613 ? a 4 initial. From this calculation, ?final = = 1.0597 and so, 5.97% vasodilation can be estimated.

If heat enhanced out-of 36.5° to 39.5°C, new bloodstream 100 % free disperse time diminished out of so you’re able to sec (%). Within this condition, this new blood circulation speed enhanced %; predicated on Poiseuille’s equation, a % reduced amount of BP or 2.71% vasoconstriction was needed seriously to secure the hemodynamic balance 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 best hookup apps Newcastle 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).