PMID- 8729481 OWN - NLM STAT- MEDLINE DCOM- 19961002 LR - 20191024 IS - 0006-355X (Print) IS - 0006-355X (Linking) VI - 31 IP - 2 DP - 1994 Mar-Apr TI - Influence of hematocrit on erythrocyte aggregation kinetics for suspensions of red blood cells in autologous plasma. PG - 193-205 AB - The influence of hematocrit on red blood cell aggregation was investigated using a modified automated Myrenne Aggregometer System. Hematocrit values ranged from 20-70% at 10% increments, and were produced by resuspending washed red cells in autologous plasma. The Myrenne System produced seven kinetic parameters of red cell aggregation. The results indicate that hematocrit (Hct) had a strong and nonlinear effect on erythrocyte aggregability. At both low and high hematocrit, the aggregation intensity (AI) tends to decrease, reaching a plateau at 40% hematocrit. The disaggregation shear rate demonstrates an exponential relationship as In gamma TMIN = 3.29-0.0837 Hct. Time constants of the aggregation process such as T1/2, TSLOW and TFAST were rather inconsistent. The increase of hematocrit increased the rate of the fast phase aggregation and slightly slowed the secondary aggregation. FAU - Deng, L H AU - Deng LH AD - Bioengineering Unit, University of Strathclyde, Glasgow, UK. FAU - Barbenel, J C AU - Barbenel JC FAU - Lowe, G D AU - Lowe GD LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Netherlands TA - Biorheology JT - Biorheology JID - 0372526 SB - IM MH - Biomechanical Phenomena MH - Erythrocyte Aggregation/*physiology MH - *Hematocrit MH - Hemorheology MH - Humans MH - In Vitro Techniques MH - Kinetics MH - Models, Cardiovascular MH - Plasma/physiology MH - Stress, Mechanical EDAT- 1994/03/01 00:00 MHDA- 1994/03/01 00:01 CRDT- 1994/03/01 00:00 PHST- 1994/03/01 00:00 [pubmed] PHST- 1994/03/01 00:01 [medline] PHST- 1994/03/01 00:00 [entrez] AID - 10.3233/bir-1994-31207 [doi] PST - ppublish SO - Biorheology. 1994 Mar-Apr;31(2):193-205. doi: 10.3233/bir-1994-31207.