Piayda K, Wimmer AC, Sievert H, et al. - Researchers undertook this observational analysis to assess outcome evaluation of percutaneous balloon aortic valvuloplasty (BAV) in different flow and gradient patterns of severe aortic stenosis (AS). This study included consecutive patients, from July 2009 to March 2018, undergoing BAV. The patients were grouped as: having normal‐flow high‐gradient (NFHG), low‐flow low‐gradient (LFLG), and paradoxical low‐flow low‐gradient (pLFLG) AS. A moderate correlation of mean pressure gradient reduction, ascertained by echocardiography, with the increase in the aortic valve area was seen in patients with NFHG AS, but it displayed no link in patients with LFLG and pLFLG AS. Overall, the likely utility of the mean pressure gradient reduction as an adequate surrogate parameter for BAV success in patients with NFHG AS was suggested, however, findings denied its suitability for patients with other hemodynamic entities.