Fig. 2From: Keeping the heart empty and beating: an alternative technique to preserve hypertrophied hearts during valvular surgeryAn example of obtaining 31P MR spectra (A). Averaged levels of the myocardial high-energy phosphates Pi, PCr and ATP measured during NHSP and NNSP (B). No significant changes in Pi, PCr, or ATP were observed in the both group. Abbreviations: Pi, inorganic phosphate; PCr, phosphocreatine; ATP, adenosine triphosphate; NHSP, normothermic hyperkalemic simultaneous blood perfusion; NNSP, normothermic normokalemic simultaneous blood perfusion.MR, magnetic resonance; 31P, phosphorus 31Back to article page