Various devices and the method of improving heart efficiency the oxygen saturation parameter which shows the oxygen amount used of myocardial organization of the heart accompany the fact that the patient inside it measures. Heart electrotherapy is adjusted, in order to cause the change of measurement oxygen saturation parameter, adjustment being completed heart electrotherapy is selected to the execution which is based on the oxygen saturation parameter after the changing which shows the increase of heart efficiency.心臓効率を向上させる各種の装置及び方法は、心臓の心筋組織の酸素使用量を示す酸素飽和パラメータを患者内部的に測定することを伴う。心臓電気療法は、測定酸素飽和パラメータの変化を引き起こすように調整され、調整済み心臓電気療法は、心臓効率の増大を示す変化後の酸素飽和パラメータに基づいた実施に選択される。
