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Τετάρτη 23 Αυγούστου 2017

A New Rule for Terminating Resuscitation of Out-of-Hospital Cardiac Arrest Patients in Japan: A Prospective Study

Publication date: Available online 23 August 2017
Source:The Journal of Emergency Medicine
Author(s): SOS–KANTO 2012 Study GroupSadakiInokuchiMDYoshihiroMasuiMDKunihisaMiuraMDHaruhikoTsutsumiMDKiyotsuguTakumaMDIshiharaAtsushiMDMinoruNakanoMDHiroshiTanakaMDKeiichiIkegamiMDTakaoAraiMDArinoYaguchiMDNobuyaKitamuraMDShigetoOdaMDKenjiKobayashiMDTakayukiSudaMDKazuyukiOnoMDNaotoMorimuraMDRyosukeFuruyaMDYuichiKoidoMDFumiakiIwaseMDKenNagaoMDShigeruKanesakaMDYasuseiOkadaMDKyokoUnemotoMDTomohitoSadahiroMDMasayukiIyanagaMDAsakiMuraokaMDMunehiroHayashiMDShinichiIshimatsuMDYasufumiMiyakeMDHideoYokokawaMDYasuakiKoyamaMDAsukaTsuchiyaMDTetsuyaKashiyamaMDMunetakaHayashiMDKiyohiroOshimaMDKazuyaKiyotaMDYuichiHamabeMDHiroyukiYokotaMDShingoHoriMDShinInabaMDTetsuyaSakamotoMDNaoshigeHaradaMDAkioKimuraMDMasayukiKanaiMDYasuhiroOtomoMDManabuSugitaMDKosakuKinoshitaMDTakatoshiSakuraiMDMitsuhideKitanoMDKiyoshiMatsudaMDKotaroTanakaMDKatsunoriYoshiharaMDKikuoYohMDJunichiSuzukiMDHiroshiToyodaMDKunihiroMashikoMDNaokiShimizuMDTakashiMugurumaMDTadanagaShimadaMDYoshiroKobeMDTomohisaShokoMDKazuyaNakanishiMDTakashiShigaMDTakefumiYamamotoMDKazuhikoSekineMDShinichiIzukaMD
BackgroundThe American Heart Association and European Resuscitation Council guidelines for cardiopulmonary resuscitation present rules for termination of resuscitation (TOR) in cases of out-of-hospital cardiac arrest (OHCA). In Japan, only doctors are legally allowed TOR in OHCA cases.ObjectiveThis study aimed to develop a new TOR rule that suits the actual situations of the Japanese emergency medical services system.MethodsFive different combinations of the TOR rule criteria were compared regarding specificity and positive predictive value (PPV) for 1-month survival with unfavorable neurologic outcomes. The criteria were unwitnessed by emergency medical service personnel, unwitnessed by bystanders, initial unshockable rhythm in the field, initial asystole in the field, no shock delivered, no prehospital return of spontaneous circulation, unshockable rhythm at hospital arrival, and asystole at hospital arrival.ResultsA total of 13,291 cases were included. The following combination provided the highest specificity and PPV for predicting 1-month unfavorable neurologic outcomes and death: unwitnessed by bystanders, initial asystole in the field, and asystole at hospital arrival. The specificity and PPV for the combination of the three criteria for predicting 1-month unfavorable neurologic outcomes were 0.992 and 0.999, and for predicting death at 1 month after OHCA were 0.986 and 0.998, respectively.ConclusionsOHCA patients fulfilling the criteria unwitnessed by bystanders and asystole in the field and at hospital arrival had universally poor outcomes. Termination of resuscitation after hospital arrival for these patients may decrease unwarranted treatments.



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