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Table 4 Primary and secondary endpoints

From: Comparison between three types of stented pericardial aortic valves (Trivalve trial): study protocol for a randomized controlled trial

Primary endpoint Mean transvalvular gradient (mmHg), six months after surgery
Secondary endpoints Effective aortic orifice diameter measured by CT-scan and echocardiography compared with the surgical data (mm)
Mean transvalvular gradient (mmHg), at day seven after surgery
Aortic bioprosthesis orifice area (m2), six months after surgery
  Diameter of the aortic orifice measured by a flat-head candle compared with the size of the implanted bioprosthesis (mm)