Are non-shockable initial rhythms always worse? Need for a detailed classification and stratified exploration of prognostic factors

Affiliations

• ¹ Department of Healthcare Epidemiology, Graduate School of Medicine and Public Health, Kyoto University, Yoshidakonoe-cho, Sakyo-ku, Kyoto 606-8501, Japan; Department of Surgery, Tokushima Prefectural Central Hospital, 1-10-3, Kuramoto-cho, Tokushima 770-8539, Japan.
• ² Department of General Internal Medicine, Fukushima Medical University, 1, Hikarigaoka, Fukushima-shi, Fukushima 960-1295, Japan; Department of Clinical Epidemiology, Graduate School of Medicine, 1, Hikarigaoka, Fukushima-shi, Fukushima 960-1295, Japan. Electronic address: gstetsuro@gmail.com.
• ³ Tertiary Emergency Medical Center, Tokyo Metropolitan Bokutoh Hospital, 4-23-15, Kotobashi, Sumida-ku, Tokyo 130-8575, Japan.
• ⁴ Emergency and Critical Care Center, Tokyo Metropolitan Hiroo Hospital, 2-34-10, Ebisu, Shibuya-ku, Tokyo 150-0013, Japan.
• ⁵ Department of Emergency and Critical Care Medicine, Tokyobay Urayasu Ichikawa Medical Center, 3-4-32 Todaijima, Urayasu, Chiba 279-0001, Japan.