Incidence of Ventricular Fibrillation in Patients With Out-of-Hospital Cardiac Arrest in Japan Survey of Survivors After Out-of-Hospital Cardiac Arrest in Kanto Area (SOS-KANTO)

Circadian Variation in Out-of-Hospital Cardiac Arrests due to Cardiac Cause in a Japanese Patient Population

“…In the USA (Seattle), 27 the proportion (45%) of patients with VF as the first rhythm at the time of EMS arrival was much higher than that in Japan (15%). 21 The SOS-KANTO Committee from Japan have provided data that the proportion of VF on EMS arrival depends on the collapse -initial electrocardiogram-recording interval. 21 When the interval is prolonged, VF was decreased and asystole was increased on electrocardiograms.…”

“…21 The SOS-KANTO Committee from Japan have provided data that the proportion of VF on EMS arrival depends on the collapse -initial electrocardiogram-recording interval. 21 When the interval is prolonged, VF was decreased and asystole was increased on electrocardiograms. Because the majority of Japanese older patients have cardiogenic cardiac arrests in their residence, cardiac resuscitation in Japan may be more difficult than in the USA.…”

Incidence and Outcomes of Out-of-Hospital Cardiac Arrest in the Eastern Part of Yamaguchi Prefecture

“…It has been reported that the incidence of VF and/or pulseless ventricular tachycardia decreases with time after collapse to CPR. 11) Although three-quarters of cardiac arrest patients were suspected to be of cardiac origin, bystander CPR was performed on only 9.5% of these patients, while 27% in the Osaka and Tokyo studies. 2,5) Ohtani reported that bystander CPR was performed on 9% of cardiogenic cardiac arrest patients in the western part of Yamaguchi prefecture, while it was performed on 31% in the central part of the prefecture.…”

Nifekalant Hydrochloride for Patients With Cardiac Arrest Caused by Shockable Rhythm

“…3 In patients with cardiac arrest of cardiac etiology, shockable rhythm [ie, ventricular fibrillation (VF) or pulseless ventricular tachycardia (VT)] is suspected to have occurred in 60% at the time of sudden cardiac arrest, and the incidence of VF/pulseless VT decreases for every 1 min increment in the time from collapse to the first recorded cardiac rhythm. 4 Of the patients whose first recorded cardiac rhythm is VF or VT, approximately 75% do not achieve ROSC on arrival at the emergency room, and approximately 90% do not achieve a neurologically intact survival. 5 Nifekalant hydrochloride is a novel class III antiarrhythmic agent according to the Vaughan Williams classification, similar to amiodarone.…”