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Abstract
Background
Because the platelet parameters have recently been used as indicators for various clinical conditions, there is a need to accurately estimate the platelet parameters by using an automated hematology analyzer. The aim of this study was to investigate an effect of a platelet transfusion on such platelet parameters as the mean platelet volume (MPV), the platelet volume distribution width (PDW), the mean platelet component (MPC) and the platelet component distribution width (PCDW) in transfused patients.
Methods
The study subjects were 25 patients who were admitted to the Department of Hematology & Oncology and they had been transfused with platelets. CD62P labeling was performed in the remaining portions of single donor platelets products (SDP) and the pooled platelet concentrates (PC) just before the SDP and PC were released. The platelet parameters were determined using the ADVIA 120 and the whole blood samples from the patients before the platelet transfusions and within 10∼16 hours after the transfusion.
Results
There were no significant difference of all the platelet parameters between the SDP (n=21) and the pooled PC (n=8). The MPC and PCDW of the SDP and the PC were significantly lower than those of the samples from the patients before transfusion. However, the PCDW of the samples from the patients after transfusion was significantly lower than that before transfusion.
References
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Fig. 1.
The correlation between platelet count in patients after transfusion and mean platelet volume (MPV) in patients before transfusion (A) or the expression of CD62P in platelet products (B).
Table 1.
Comparison of platelet parameters on the ADVIA 120, storage time, and CD62P expression (%) in pooled platelet concentrates (PC) and single donor platelet pheresis products (SDP); and corrected count of increments in patients transfused
MPV, mean platelet volume; PDW, platelet volume distribution width; MPC, mean platelet component; PCDW, platelet component distribution width. One unit of pooled PC originated from 8 units of PC. There was no significant difference of platelet parameters on the ADVIA 120, CD62P expression and storage time in products or CCI in patients transfused between PC and SDP.
Table 2.
The change of platelet parameters, on the ADVIA 120, in patients transfused and platelet parameters of pooled platelet concentrates (PC) and single donor platelet products (SDP)
| PC (n=8) | Patients transfused with PC | SDP (n=21) | Patients transfused with SDP | |||
|---|---|---|---|---|---|---|
| Before (n=8) | After (n=8) | Before (n=21) | After (n=21) | |||
| PLT∗ | 3.54±0.94 | 18,125±8,236 | 31,875±11,969‡ | 3.50±0.42 | 12,571±4,319 | 27,380±12,978‡ |
| MPV (fL) | 8.96±0.66 | 8.46±0.91 | 8.53±0.65 | 8.55±0.81 | 8.40±0.91 | 8.58±0.94 |
| PDW (%) | 49.93±2.97† | 57.93±9.25 | 51.84±8.60† | 52.20±3.32 | 53.36±14.16 | 52.46±11.02 |
| MPC (g/dL) | 20.66±0.75‡ | 23.54±1.48 | 23.66±1.72 | 20.80±1.73‡ | 23.38±1.98 | 24.10±2.09 |
| PCDW (g/dL) | 6.38±0.60† | 7.09±0.74 | 6.54±0.43† | 6.29±1.10‡ | 7.29±0.75 | 6.73±0.76† |
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