Aspirin does not Affect the Hematoma Volume and Growth in Severe Spontaneous Intracranial Hematoma

Abstract Baseline hematoma volume (HV) and hematoma growth (HG) affect the prognosis of spontaneous intracranial hematoma (ICH), but there is still a lack of evidence on the effects of aspirin (acetylsalicylic acid, ASA) on HV and HG in patients with severe ICH. This study retrospectively analyzed patients with severe ICH who met the inclusion and exclusion criterias in Beijing Tiantan Hospital, Capital Medical University between January 1, 2015 and July 31, 2019. Severe ICH patients were divided into ASA group and nASA group according to ASA usage, and the effects of prior ASA on HV and HG were evaluated respectively. And possible risk factors for HG were screened. Totally, 221 patients with severe ICH were consecutively enrolled into this study. There were 72 (32.58%) patients in ASA group and 149 patients (67.42%) in nASA group. Although the baseline HV of the nASA group was significantly higher than that of the ASA group (45.51±29.76 VS 32.67±25.85, p=0.001), after adjusting for confounding factors, the prior ASA did not significantly affect the baseline HV (p = 0.057). Similarly, although the incidence of HG in nASA group was higher than that in ASA group (36.2% VS 25.0%, p = 0.095), ASA did not significantly affect the occurrence of HG (p =0.057). In addition, we found that admission high blood pressure and GCS were risk factors for HG. Prior ASA does not increase the baseline HV and the incidence of HG in severe ICH patients. In addition, admission high blood pressure and GCS were risk factors for HG.