Statistical analysis
The clinical data were prospectively recorded and tabulated in a Microsoft Excel database (Microsoft Corp, Redmond, Wash).9 Statistical analysis was performed using SPSS, release 25.0, for Windows (IBM Corp, Armonk, NY). Continuous variables were tested for normality using the Shapiro-Wilk test. Variables that were normally distributed are presented as the mean ± standard deviation and range. Non-normally distributed variables are presented as the median and interquartile range. Categorical variables are presented as frequencies and percentages. Categorical variables were analyzed using a χ2 test or Fisher's exact test, as necessary. An independent samples Student t test was used for continuous variables. A Wilcoxon signed-rank test was used to evaluate the difference in blood test results before and after revascularization. All reported P values are two-sided, and P < .05 was considered to indicate statistical significance.9