Cardiac arrest & resuscitation

Association between metformin and survival outcomes in in-hospital cardiac arrest patients with diabetes

J Crit CarePublished Retrospective observational study

Main finding · Survival to dischargeResult — go to the resultAOR for survival to discharge 5.37 95% CI 2.13–13.53

Authors' conclusion

In IHCA patients with T2DM, administration of metformin within 24 h before IHCA was independently associated with survival to discharge.

Study context

Population
Adult in-hospital cardiac arrest (IHCA) patients with type 2 DM (T2DM), April 2017 to March 2022
Participants
377 patients
Exposure
Metformin vs no metformin within 24 h before IHCA
Outcome
Survival to discharge
Methodological detailsmultivariable logistic regression
  • Multivariable logistic regression

Main finding

As reported in the abstract

AOR for survival to discharge

5.37

95% CI 2.13–13.53

P < 0.001

By group

Metformin vs No metformin
aOR for survival to discharge 5.37 (95% CI 2.13–13.53); P < 0.001

Observational data: associations, not effects.

Further findings

OutcomeMetforminNo metforminaOR (95% CI)P value
Good neurologic outcome18.9%6.2%3.57 (1.14–11.17)P = 0.029
  • Good neurologic outcome: unadjusted P = 0.004

Survival to discharge by metformin dose

Highest survival to discharge with 500-1000 mg/day metformin
P < 0.001

Original publication

Association between metformin and survival outcomes in in-hospital cardiac arrest patients with diabetes. J Crit Care. Published 21 October 2022. doi:10.1016/j.jcrc.2022.154171

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