RESUMO
Objective To establish a bedside available risk scoring system of no-reflow in the acute stage of STEMI.Methods Data from STEMI patients treated with PCI divided into model group and validation group were analyzed.Multivariable binary logistic regression analysis was used to identify independent no-reflow predictors of the model group.Finally,a score according to the odds ratio on logistic regression analysis was designed,and then risk stratification was established,and no-reflow high-risk patients with myocardial infarction were selected.The authenticity and reliability of the logistic regression courses were validated using receiver operator characteristic curve (ROC)and Hosmer-Lemeshow goodness-of-fit.Results Multivariate logistic regression analysis demonstrated that female (OR =0.587,P =0.019),Killip class of myocardial infarction≥2 (OR =3.656,P 5 was arranged into high risk level.The risk score system demonstrated a good risk prediction in the validation group with AUC of 0.891 (95%CI:0.822 -0.959)based on ROC analysis.ROC analysis in the validation group was applied to Killip class,thrombus burden,score and risk stratification in the validation group ,and the no-reflow score was more accurate,with a larger area under the curve (AUC = 0.851,95% CI:0.776 -0.927 ).Conclusions Establishment of no-reflow scoring system with STEMI patients undergoing PCI was benefit to select high risk patients with no-reflow.
RESUMO
Objective To assess the efficacy and safety of using a novel channel dilator (the Corsair microcatheter) accompanied with special occlusion guide wires for coronary chronic total occlusion (CTO) recanalization. Methods From 2011 December to 2013 August,we performed 89 cases (the study group) using channel dilator and the new special occlusion guide wires for CTO recanalization. Another 89 CTO lesions treated before using the corsair microcatheter were compared as the control group.We recorded clinical characteristic, outcome of PCI,radiation exposure time, contrast utilization and the procedure time. The MACE rate was monitored during follow up. Results The intracoronary channel dilator accompanied with special occlusion guide wires were inserted into 33 left anterior descending arteries, 17 left circumlfex arteries and 38 right coronary arteries. The success rates of procedure were signiifcantly higher in the study group than in the control group (91% vs. 67.7%, P < 0.05). Procedure and lfuoroscopy time tended to be lower in the study group than in the control group. There were no serious complications related to the catheter and no death case recorded. Conclusions The channel dilator accompanied with special occlusion guide wires may facilitate the conventional approach with a higher success rate in PCI.