The present invention measures electrocardiogram and oxygen saturation when performing cardiopulmonary resuscitation, measures brain waves, detects brain activity as the degree of blood circulation to the brain in real time, has a defibrillation function, The present invention relates to a cardiopulmonary resuscitation apparatus that uses a brain activity index as a CPR signal indicating the degree of resuscitation and can remotely monitor a biological signal in a pre-hospital stage. The present invention includes an electroencephalogram detection unit that detects an electroencephalogram signal in the frontal lobe and an arithmetic processing unit that detects a brain activity index from the electroencephalogram signal received from the electroencephalogram detection unit, and indicates the degree of cardiopulmonary resuscitation A cardiopulmonary resuscitation apparatus using a brain activity index as a CPR signal, wherein the brain activity index is any one of burst suppression ratio (BSR), beta ratio, and high-speed and slow-wave relative synchronization (SyncFastSlow, SFS) . The arithmetic processing unit removes noise in the electroencephalogram signal received from the electroencephalogram detection unit, and calculates a beta ratio (BetaRatio) from the electroencephalogram signal from which the noise has been removed (where spectral power (30 to 47 Hz) is a power spectrum of 30 to 47 Hz in the brain wave, and spectral power (11 to 20 Hz) is a power spectrum of 11 to 20 Hz in the brain wave).本発明は、心肺蘇生を行う際に心電図および酸素飽和度を測定し、脳波を測定し、脳への血液循環の程度である脳活性度をリアルタイムで検出し、除細動機能を備え、心肺蘇生の程度を示すCPR信号として脳活性指標を用い、病院前段階における生体信号の遠隔モニタリングが可能な心肺蘇生装置に関する。 本発明は、前頭葉において脳波信号を検出する脳電図検出部と、前記脳電図検出部から受信された脳波信号から脳活性指標を検出する演算処理部とを備え、心肺蘇生の程度を示すCPR信号として脳活性指標を用いる心肺蘇生装置であって前記脳活性指標は、バーストサプレッション比(BSR)、ベータ比、高速および低速波の相対同期(SynchFastSlow、SFS)のうちいずれか1つである。 前記演算処理部は、前記脳電図検出部から受信された脳波信号における雑音を除去し、雑音が除去された脳波信号からベータ比(BetaRatio)を【数13】(ただし、spectral power(30~47Hz)は、脳波における30~47Hzのパワースペクトルムであり、spectral