Platelet Surface Coverage (±SD) Following Reperfusion for 2 Minutes of Normal Low-Mr Heparin Anticoagulated Blood, Supplemented With Normal or Patient Plasma, Over Coverslips Coated With Calf-Skin Collagen or Human vWF
| Plasma Added . | Surface Coverage (±SD) . | |
|---|---|---|
| Collagen . | vWF . | |
| Normal plasma 5% | 15.8 ± 2.4 | 21.0 ± 2.2 |
| Patient plasma 5% | 21.6 ± 2.2* | 19.2 ± 2.5 |
| Normal plasma 10% | 13.1 ± 1.3 | 15.1 ± 1.0 |
| Patient plasma 10% | 14.0 ± 1.1 | 19.7 ± 1.4† |
| Plasma Added . | Surface Coverage (±SD) . | |
|---|---|---|
| Collagen . | vWF . | |
| Normal plasma 5% | 15.8 ± 2.4 | 21.0 ± 2.2 |
| Patient plasma 5% | 21.6 ± 2.2* | 19.2 ± 2.5 |
| Normal plasma 10% | 13.1 ± 1.3 | 15.1 ± 1.0 |
| Patient plasma 10% | 14.0 ± 1.1 | 19.7 ± 1.4† |
Average surface coverage of 30 fields per coverslip. To calculate statistical significance (Student's t test), the minimum number of fields required to reach a stable numerical value for the percentage coverage was taken: this number was equal to 5.
P < .005 for the difference with perfusions over collagen surface in the presence of 5% normal plasma.
P < .005 for the difference with perfusions over vWF surfaces in the presence of 10% normal plasma.