During robot-assisted laparoscopic radical prostatectomy (RALP), steep Trendelenburg position and carbon dioxide pneumoperitoneum are inevitable for surgical exposure, both of which can impair cardiopulmonary function. This study was aimed to compare the effects of pressure-controlled ventilation with volume guarantee (PCV with VG) and 1:1 equal ratio ventilation (ERV) on oxygenation, respiratory mechanics and hemodynamics during RALP. | Comparisons of pressure-controlled ventilation with volume guarantee and volume-controlled 1:1 equal ratio ventilation on oxygenation and respiratory mechanics during robot assisted laparoscopic radical prostatectomy: A randomized controlled trial