Cardiac arrest & resuscitation

Comparative Effectiveness of Amiodarone and Lidocaine for the Treatment of In-Hospital Cardiac Arrest

ChestPublished Retrospective cohort study

Authors' conclusion

Compared with amiodarone, lidocaine therapy among adult patients with in-hospital cardiac arrest from VT/VF was associated with statistically significantly higher rates of ROSC, 24 h survival, survival to hospital discharge, and favorable neurologic outcome.

Study context

Population
Adults with VT/VF IHCA refractory to CPR and defibrillation, Get With the Guidelines-Resuscitation (GWTG-R) hospitals, 2000–2014
Participants
14,630 adults
Exposure
Lidocaine vs amiodarone
  • Lidocainen = 4,572
  • Amiodaronen = 10,058reference
Outcome
ROSC
Methodological detailsmulticentre registry, multivariable logistic regression, propensity score methods
  • Multicentre registry
  • Multivariable logistic regression
  • Propensity score methods

Main finding

As reported in the abstract

AOR for return of spontaneous circulation (ROSC)

1.15

P = 0.01

adjusted for all covariates

Average marginal effect for ROSC

2.3

95% CI 0.5–4.2

ROSC

Observational data: associations, not effects.

Secondary outcomes

OutcomeEstimateP value
24 h survivalLidocaine vs AmiodaroneaOR for 24 h survival 1.16P = 004
24 h survivalLidocaine vs Amiodaroneaverage marginal effect for 24 h survival 3.0 (95% CI 0.9–5.1)
Survival to hospital dischargeLidocaine vs AmiodaroneaOR for survival to discharge 1.19P < 0.001
Survival to hospital dischargeLidocaine vs Amiodaroneaverage marginal effect for survival to discharge 3.3 (95% CI 1.5–5.2)
Favorable neurologic outcome at hospital dischargeLidocaine vs AmiodaroneaOR for favorable neurologic outcome 1.18P < 0.001
Favorable neurologic outcome at hospital dischargeLidocaine vs Amiodaroneaverage marginal effect for favorable neurologic outcome 3.1 (95% CI 1.3–4.9)

Original publication

Comparative Effectiveness of Amiodarone and Lidocaine for the Treatment of In-Hospital Cardiac Arrest. Chest. Published 2 November 2022. doi:10.1016/j.chest.2022.10.024

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