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Increase in Erythrocyte Disaggregation Shear Stress in Hypertension Seyed Mahmoud Razavian, Muriel Del Pino, Alain Simon, and Jaime Levenson The aggregation and disaggregation behaviors of red blood cells were investigated in 17 nonnotensive and 21 hypertensive subjects with a laser reflectometry technique, and simultaneous measurements were taken of blood viscosity with a coaxial viscometer. Increased red blood cell aggregation (26%, p< 0.001) and disaggregation shear rate (20%, p
30 HEMATOCflfT%
FIGURE 3. Influence of hematocrit on red blood cell (RBC) aggregation parameters in normotensive (n) and hypertensive (•) subjects. Note that at any level of hematocrit, blood viscosity at disaggregation shear rate threshold [v(yJ] ('eft panel) and the shear rate (middle panel) and stress (right panel) thresholds for RBC disaggregation were significantly higher in hypertensive than in normotensive subjects. *p
Increase in Erythrocyte Disaggregation Shear Stress in Hypertension Seyed Mahmoud Razavian, Muriel Del Pino, Alain Simon, and Jaime Levenson The aggregation and disaggregation behaviors of red blood cells were investigated in 17 nonnotensive and 21 hypertensive subjects with a laser reflectometry technique, and simultaneous measurements were taken of blood viscosity with a coaxial viscometer. Increased red blood cell aggregation (26%, p< 0.001) and disaggregation shear rate (20%, p
30 HEMATOCflfT%
FIGURE 3. Influence of hematocrit on red blood cell (RBC) aggregation parameters in normotensive (n) and hypertensive (•) subjects. Note that at any level of hematocrit, blood viscosity at disaggregation shear rate threshold [v(yJ] ('eft panel) and the shear rate (middle panel) and stress (right panel) thresholds for RBC disaggregation were significantly higher in hypertensive than in normotensive subjects. *p
