NFIRS 5.0 Element: ‘Initial Arrest Rhythm’

Definition : The patient’s initial heart arrest rhythm as measured by the fire department’s EMS personnel with an EKG monitor.
Purpose : This element tracks trends and patterns in the types and the survival of cardiac patients.
Entry : Check or mark the appropriate box.

Element Specification

 Specification   Value 
Requirement Optional
Element Type Coded Field – The coded field relating to an entry in the code table. Most coded fields allow for Plus+ One codes. For these fields the expected length of the coded entry is depicted as (National length OR Plus+ One length). Only fields with this notation in the expected length column allow for Plus+ One definitions. If the user has not provided information, an empty field should be transmitted.


Here are the NFIRS codes for the ‘Initial Arrest Rhythm’ element

1 V-Fib/V-Tach.
0 Initial arrest rhythm, other.
U Undetermined.

Topic: NFIRS

Last Updated on March 17, 2023