When minutes count-the fallacy of accurate time
documentation during in-hospital resuscitation 

William Kayea, b, , , Mary Elizabeth Mancinic, 1,  and
Tanya Lane Truittd, 2, 

Resuscitation 
Volume 65, Issue 3 , June 2005, Pages 285-290

Abstract
The purpose of this study is to examine the commonly held
assumption that time is measured and documented accurately
during resuscitation from cardiac arrest in the hospital.

Methods:
A two-pronged approach was used to evaluate the accuracy of
time documentation and measurement. First, two existing
databases-the National Registry of Cardiopulmonary
Resuscitation (NRCPR) and a 240-bed hospital's repository
of cardiac arrest records-were evaluated for completeness
and accuracy of documentation on resuscitation records of
times required for calculating the Utstein gold-standard
process intervals-recognition of pulselessness to starting
cardiopulmonary resuscitation (CPR), delivery of first
defibrillation shock, successful intubation, and
epinephrine (adrenaline) administration. Second, nurses
from a 900-bed hospital were interviewed to determine
timepieces used during resuscitations, and timepieces were
assessed for coherence and precision.

Results:
>From the NRCPR database that included 10,689 pulseless
cardiac arrests submitted by 176 hospitals, time data for
calculating the Utstein intervals were missing for 10.9% of
the interventions; negative intervals were calculated for
4%. From 232 consecutive resuscitation records from the
240-bed hospital, 85 records were identified from
non-monitored units with staff who provided only CPR.
Defibrillation, intubation and epinephrine administration
were delayed until after arrival of advanced life support
(ALS) responders; unlikely intervals of 0 min from event
recognition to these ALS interventions were calculated for
11.5%. Sixty-seven nurses from the 900-bed hospital were
interviewed; when documenting information during
resuscitations, 21 (31.3%) reported using only patient room
clocks, 30(44.8%) only their watches, and 16 (23.9%)
several timepieces. In all in-patient units in the same
hospital, 241 timepieces (nurses' and physicians' watches,
clocks in patient rooms, defibrillator clocks, central
station monitors, and nursing station clocks) were compared
to atomic time.

The mean absolute time difference from atomic clock was
2.83 min (S.D. ±5.9 min), median 1.88 min, and range 52.1
min slow to 72.85 min fast. There was no difference among
timepieces (P = 0.35).

Conclusions:
Missing time data, negative calculated Utstein
gold-standard process intervals, unlikely intervals of 0
min from arrest recognition to ALS interventions in units
with CPR providers only, use of multiple timepieces for
recording time data during the same event, and wide
variation in coherence and precision of timepieces bring
into question the ability to use time intervals to evaluate
resuscitation practice in the hospital.
Practitioners, researchers and manufacturers of
resuscitation equipment must come together to create a
method to collect and document accurately essential
resuscitation time elements. Our ability to enhance the
resuscitation process and improve patient outcomes requires
that this be done. 

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