Cardiac arrest & resuscitation

Clinical utility of the ‘Impact of Event Scale-Revised’ for identifying Acute Stress Disorder in survivors of sudden out-of-hospital cardiac arrest: Results from the multicenter REVIVAL cohort

ResuscitationPublished Diagnostic accuracy study

Authors' conclusion

The IES-R appears to be a useful screening tool for Acute Stress Disorder during hospitalisation and helps clinicians make post-cardiac arrest diagnostic and treatment decisions.

Study context

Population
Out-of-hospital cardiac arrest (OHCA) survivors (Danish REVIVAL cohort)106 completed interview
Participants
244 survivors
Comparison
Impact of Event-Scale Revised (IES-R) vs Acute Stress Disorder Interview
  • IES-Rn = 244
  • Acute Stress Disorder Interviewn = 106reference
Outcome
Discriminative ability of IES-R thresholds for probable Acute Stress Disorder (AUC, sensitivity, specificity)
Follow-up
During hospitalization
Methodological detailsmulticentre cohort, psychometric evaluation
  • Multicentre cohort
  • Psychometric evaluation

Performance

As reported in the abstract

Probable Acute Stress Disorder
Test or modelCorrectly classifiedSensitivitySpecificity
IES-R ≥3077%100%75%

IES-R ≥30

Correctly classified77%
Sensitivity100%
Specificity75%

Further findings

Prevalence of probable Acute Stress Disorder (IES-R ≥30)

Prevalence (n = 244)
23%

Psychometric properties of IES-R

Good internal consistency and convergent validity; factor analysis supported original three-factor structure

Original publication

Clinical utility of the ‘Impact of Event Scale-Revised’ for identifying Acute Stress Disorder in survivors of sudden out-of-hospital cardiac arrest: Results from the multicenter REVIVAL cohort. Resuscitation. Published 21 February 2025. doi:10.1016/j.resuscitation.2025.110558

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