1Gibbs FA,Gibbs EL,Lennox WG.Effect on the electroencephalogram of certain drugs which influence nervous activity.Arch Intern Med,1937,60:154-166.
2Bruhn J,Ropcke H,Hoeft A.Approximate entropy as an electroencephalographic measure of anesthetic drug effect during desflurane anesthesia.Anesthesiology,2000,92:715-726.
3Bruhn J,Ropcke H,Rehberg B,et al.Electroencephalogram approximate entropy correctly classifies the occurrence of burst suppression pattern as increasing anesthetic drug effect.Anes thesiology,2000,93:981-985.
4Bruhn J,Bouillon TW,Shafer SL.Onset of propofol-induced burst suppression may be correctly detected as deepening of anesthesia by approximate entropy but not by bispectral index.Br J Anaesth,2001,87:505-507.
5Bruhn J,Bouillon TW,Radulescu L,et al.Correlation of approximate entropy,bispectral index,and spectral edge frequency 95 (SEF95) with clinical signs of "anesthetic depth"during coadministration of propofol and remifentanil.Anesthesiology,2003,98:621-627.
6Vakkuri A,Yli-Hankala A,Talja P,et al.Time-frequency balanced spectral entropy as a measure of anesthetic effect in central nervous system during sevoflurane,propofol,and thio pental anesthesia.Acta Anaesthesiol Scand,2004,48:145-153.
7Vanluchene ALG,Struys mmRF,Heyse BEK,et al.Spectral entropy measurement of patient responsiveness during propofol and remifentanil.A comparison with the bispectral index.Br J Anaesth,2004,93:645-654.
8Vanluchene ALG,Vereecke H,Thas O,et al.Spectral entropy as an electroencephalogtaphic measure of anesthetic drug effect:a comparison with bispectral index and processed midlatency auditory evoked response.Anesthesiology,2004,101:34-42.
9Ellerkmann RK,Liermann VM,Alves TM,et al.Spectral entropy and bispectral index as measures of the electroencephalogtaphic effects of sevoflurane.Anesthesiology,2004,101:1275-1282.
10Schmidt GN,Bischoff P,Standl T,et al.Comparative evalua tion of the Datex-Ohmeda S/5 entropy modul and the bispectral index monitor during propofol-remifentanil anesthesia.Anesthesiology,2004,101:1283-1290.
5Vakkuri A, Yli-Hankala A, Talja P, et al. Time-frequency balanced spectral entropy as a measure of anesthetic drug effect in central nervous system during sevoflurane, propofol, and thiopental anesthesia. Acta Anaesthesiol Scand, 2004, 48 : 145-153.
6Iannuzzi M, Iannuzzi E, Rossi F, et al. Relationship between bispectral index, electroencephalographic state entropy and effect-site EC50 for propofol at different clinical endpoints. Br J Anaesth, 2005, 94 (5) :492-495.
7Anderson R. E. , J. G. Jakobsson. Entropy of EEG during anaesthetic induction: a comparative study with propofol or nitrous oxide as sole agent. Br J Anaesth, 2004,92: 167-170.
8Viertio-Oja H , Maja V , Sarkela M , et al . Description of the Entropy algorithm as applied in the Datex-Ohmeda S/ 5 Entropy Module. Acta Anaest hesiol Scand ,2004 ,48:154-160.
9Schmidt GN , Bischoff P , Standl T , et al . Comparative evaluation of the Datex-Ohmeda S/5 Entropy Module and t he Bispectral Index monitor during propofol-remifentanil anesthesia. Anesthesiology ,2004 ,101:1283-1290.
10[1]Viertio-Oja H,Maja V,Sarkela M,et al.Description of the Entropy algorithm as applied in the Datex-Ohmeda S/ 5 Entropy Module.Acta Anaest hesiol Scand,2004,48:154-160.
