Abstract:Objective To investigate the predictive value of serum fibrinogen (FIB), D-dimer, and thromboelastography (TEG) for the prognosis of acute ischemic stroke (AIS) patients after intravenous thrombolysis.Methods A total of 96 AIS patients admitted to Bazhong Central Hospital from March 2021 to March 2022 were selected and divided into a favorable prognosis group (n = 72) and an unfavorable prognosis group (n = 24) based on their outcomes at 3 months. Demographic and clinical data were compared between the two groups using univariate analysis, and statistically significant factors were subjected to logistic regression analysis. ROC curves were constructed to assess the predictive value of serum FIB, D-dimer, and TEG parameters for AIS prognosis.Results The prevalence of hypertension, as well as levels of PT, FIB, D-dimer, total cholesterol, LDL-C, HDL-C, R value, and K value, were all significantly lower in the favorable prognosis group compared to the poor prognosis group (P <0.05). Conversely, α angle, MA value, and LY30 were significantly higher in the favorable prognosis group (P <0.05). Multivariate stepwise logistic regression analysis revealed that FIB levels [O^R = 0.351 (95% CI: 0.184, 0.670)], D-dimer levels [O^R = 0.010 (95% CI: 0.001, 0.125) ], R value [O^R = 0.305 (95% CI: 0.161, 0.579) ], and K value [O^R = 0.020 (95% CI: 0.004, 0.101) ] were protective factors for poor prognosis in patients with ischemic stroke (P < 0.05). In contrast, α angle [O^R = 1.088 (95% CI: 1.037, 1.141) ] and MA value [O^R = 1.093 (95% CI: 1.037, 1.152) ] were identified as risk factors for poor prognosis (P < 0.05). The combined prediction model using FIB, D-dimer, R value, K value, α angle, and MA value yielded the area under the curve of 0.935 (95% CI: 0.880, 0.990), with a sensitivity of 87.5% (95% CI: 0.676, 0.973) and a specificity of 93.1% (95% CI: 0.845, 0.977), outperforming individual predictive indicators.Conclusion The combination of serum FIB, D-dimer, and TEG parameters provides significant value in predicting the prognosis of AIS patients after intravenous thrombolysis.