The prevalence of PHT was calculated using the SPSS software.Clinical, hemodynamic, and metabolic variables were
compared between patients with and without PHT with ‘‘t’’
test. Values were expressed as mean ± Standard deviation
(SD) and as percentage for categorial parameters. Differences
between groups were compared with Student’st-test for parametric continuous variables. Chi-square test was applied for
estimating the occurrence of categorical variables. Pearson’s
correlation coefficient was used to test the relationship between
PAP and other parameters. APvalue