目的 探讨颅脑损伤急性期血小板（PLT）参数与外伤性脑梗死（TCI）的关系。 方法 选取2010年9月－2012年1月符合纳入除标准的颅脑损伤患者191例。将伤后14 d内发生脑梗死的患者划入观察组，余为对照组。分别于伤后第24、48小时，第3、7、14天，采集肘静脉血对PLT计数、PLT平均体积（MPV）、PLT体积分布宽度（PDW）；伤后24 h行格拉斯哥昏迷评分（GCS），伤后6个月随访行格拉斯哥结果评分（GOS）。分别分析脑梗死与上述PLT参数的关系、PLT参数与颅脑损伤病情轻重的关系以及与预后的关系。 结果 观察组PLT计数降低、MPV升高、PDW升高；观察组患者GCS/GOS与PLT计数呈正相关，与MPV、PDW呈负相关。 结论 PLT计数、MPV、PDW均与TCI有关，三者中PLT最具临床意义。PLT计数越低、MPV和PDW越高，脑梗死可能性越大，颅脑损伤可能越严重，预后可能越差。
【摘要】 目的 探讨中型和重型颅脑损伤后患者血小板（platelet，Plt）参数的变化特点及临床意义。 方法 选取2009年3月-2010年3月脑外伤后24 h内入院的颅脑损伤患者75例作为观察组，于伤后1、3、7、14 d采血测定Plt数量、血小板平均体积（mean platelet volume，MPV）、血小板体积分布宽度（platelet distribution width，PDW），并同时进行格拉斯哥昏迷评分（Glasgow coma scale，GCS）。同时选取60例健康体检者，测定Plt、MPV和PDW作为对照组。 结果 观察组伤后1、3、7 d Plt计数分别为（106.21±36.31）、（102.76±35.23）、（108.37±31.32）×109/L，较对照组[（210.41±68.56）×109/L]明显降低（Plt;0.05）；观察组伤后1、3、7 d MPV分别为（12.34±1.34）、（11.21±1.52）、（10.78±1.36） fL，PDW分别为（15.78±1.26）、（17.67±1.16）、（16.72±1.21） fL，均较对照组[MPV：（8.24±1.76） fL，PDW：（12.86±1.42） fL]明显升高（Plt;0.05）；伤后14 d Plt、MPV和PDW均较对照组差异无统计学意义（Pgt;0.05）。GCS≤8分组伤后1 d Plt计数为（96.85±36.52）×109/L，明显低于GCSgt;8分组[（123.85±35.78）×109/L]，而GCS≤8分组MPV为（12.14±1.32） fL，PDW为（18.63±1.21） fL，均明显高于GCSgt;8分组[MPV：（9.78±1.34） fL，PDW：（16.72±1.34） fL]，差异均有统计学意义（Plt;0.05）。伤后第1天Plt与随访6个月GOS评分呈正相关（r=0.625，Plt;0.05）。 结论 中型和重型颅脑损伤后Plt计数明显降低，MPV和PDW值明显升高，且与伤情及预后有关。Plt及其参数的检测有助于对伤情、预后的判断。【Abstract】 Objective To investigate the platelet parameters changes and its clinical significance in medium and severe head injury patients. Methods From March 2009 to March 2010, 75 brain injury patients hospitalized within 24 h after injury were included in this study. The platelet number (Plt), mean platelet volume (MPV), platelet volume distribution width (PDW) and Glasgow coma scale were measured on the first, third, seventh and fourteenth day after injury respectively. We also measured the Plt, MPV and PDW of 60 healthy volunteers to make comparisons. Results The Plt counts were (106.21±36.31), (102.76±35.23), and (108.37±31.32)×109/L in the head injury patients on the first, third, and 7th day respectively, which were significantly lower than those in the control group [(210.41±68.56)×109/L] (Plt;0.05); the MPV and PDW values measured on the first day [MPV: (12.34±1.34) fL, PDW: (15.78±1.26) fL] and the third day [MPV: (11.21±1.52) fL, PDW: (17.67±1.16)fL] were both significantly lower than those of the control group (Plt;0.05); There was no evidence of a difference in Plt, MPV and PDW between the two groups fourteen day after injury (P＞0.05); The Plt count was (96.85±36.52)×109/L in GCS≤8 group on the first day, which was significantly lower than that of GCSgt;8 group [(123.85±35.78) fL, Plt;0.05]; However, the MPV and PDW values in GCS≤8 group [(MPV: (12.14±1.32) fL, PDW: (18.63±1.21) fL] were both significantly higher than those of GCSgt;8 group [MPV: (9.78±1.34) fL, PDW: (16.72±1.34) fL, Plt;0.05]; The Plt count was correlated with GOS score positively (r=0.625,Plt;0.05). Conclusions Medium and severe head injury patients are significantly associated with a lower Plt count and increased MPV and PDW values. The Plt parameters changes are correlated with the prognosis of patients. Therefore, the measurement of Plt parameters may contribute to the valuation of severity and prognosis, and provide new ideas for treatment of head injury patients.