Comparison Of Predictive Value Of The Satellite Sign And The Blend Sign For Hematoma Expansion In Patient With Spontaneous Intracerebral Hemorrhage

Objective:To explore the predictive value of satellite sign(SS)and blend sign(BS)based on non-contrast CT(NCCT)for spontaneous intracerebral hemorrhage(SICH)expansion of hematoma.Methods:235 patients with SICH were enrolled in our study.All patients underwent NCCT scan within 6 hours after symptom onset.The followed-up CT scan was performed within 24 hours after onset.These patients were divided into HE group and non-HE group.The relevant clinical datas were collected,including age,sex,baseline hematoma volume,diabetes,hypertension,apoplexy,systolic pressure at admission,diastolic pressure at admission,BS,SS.SPSS 22.0 was used to analyze whether the factors were statistically significant for hematoma enlargement.The statistically significant factors were used through Logistic regression analysis to obtain the independent risk factors for hematoma enlargement;and the predictive value of SS and BS were analyzed by Receiver operating characteristic curve(ROC).Results:There were significantly differences in the baseline hematoma volume,the diastolic blood pressure at admission,SS and BS between the two groups.Logistic regression analysis showed that BS(OR = 7.548,95%CI = 3.823～14.904,P<0.001),SS(OR = 2.898,95%CI = 1.430～ 5.874,P=0.003)and baseline hematoma volume(OR = 1.015,95%CI = 1.004 ～ 1.027,P=0.01)were independent risk factors of HE.The sensitivity,specificity,positive predictive value(PPV),negative predictive value(NPV)and the area under the curve(AUC)of the blend signs for predicting early hematoma expansion were0.725,0.761,61.0%,84.3% and 0.743.The sensitivity,specificity,PPV,NPV and the AUC of the satellite sign for predicting early hematoma expansion were 0.600,0.690,50.0%,77.0% and 0.645.Conclusion:Blend sign has better value in predicting hematoma expansion than satellite sign.