Elevated mean pulmonary artery pressure in patients with mild-to-moderate mitral stenosis: a useful predictor of worsening renal functions?

We read the article entitled ‘‘Elevated mean pulmonary artery pressure in patients with mild-to-moderate mitral stenosis: a useful predictor of worsening renal functions?’’ by Zorkun et al. (1) published in August issue of The Anatolian Journal of Cardiology 2013; 13: 457-64 with interest. They concluded that elevated mean pulmonary artery pressure at the time of initial evaluation, in patients with the mild -to-moderate mitral stenosis, might help to predict worsening renal function. Frankly, we appreciate the authors for their informative and original study. However, we have some criticism about this study.