Elsevier

Resuscitation

Volume 149, April 2020, Pages 150-157
Resuscitation

Review
Intravenous vs. intraosseous administration of drugs during cardiac arrest: A systematic review

https://doi.org/10.1016/j.resuscitation.2020.02.025Get rights and content

Abstract

Aim

To perform a systematic review of the literature on intravenous (IV) vs. intraosseous (IO) administration of drugs during cardiac arrest in order to inform an update of international guidelines.

Methods

The review was performed according to PRISMA guidelines and registered on PROSPERO. Medline, Embase and Evidence-Based Medicine Reviews were searched on December 17, 2019 for studies comparing IV to IO administration of drugs. The population included neonatal, paediatric, and adult patients with cardiac arrest. Two investigators reviewed each search for study relevance, extracted data, and assessed the risk of bias of individual studies. Meta-analyses were performed for studies without a critical risk of bias. Certainty of evidence was evaluated using GRADE.

Results

We included six observational studies comparing IV to IO administration of drugs and two randomized trials assessing the effect of specific drugs in subgroups related to IV vs. IO administration. All studies included adult out-of-hospital cardiac arrest patients. No studies were identified in neonatal or paediatric patients. The risk of bias for the observational studies was overall assessed as critical or serious, with confounding and selection bias being the primary sources of bias. The meta-analyses excluding studies with a critical risk of bias favoured IV access for all outcomes. Using GRADE, the certainty of evidence was judged at very low. Subgroup analyses of the two randomized trials demonstrated no statistically significant interactions between the route of access and study drugs on outcomes. However, these trials were underpowered to assess such interactions.

Conclusions

We identified a limited number of studies comparing IV vs. IO administration of drugs during cardiac arrest. Pooled results from four observational studies favoured IV access with very low certainty of evidence. From the subgroup analyses of two randomized clinical trials, there was no statistically significant interaction between the route of access and study drug on outcomes.

Introduction

Current guidelines recommend administration of certain drugs (e.g. epinephrine and amiodarone/lidocaine) as part of advanced life support during cardiac arrest.1, 2, 3, 4 Owing to the relative ease of intraosseous (IO) access, it has gained significant focus during the last decade as an option for drug administration during cardiac arrest in all age groups. In addition, many Emergency Medical Service agencies and in-hospital resuscitation teams use IO as the first choice of access for drug administration during cardiac arrest. Guidelines recommend that drugs can be administered through an IO route if intravenous (IV) access is difficult or impossible to obtain.1, 2 However, it is unknown whether the IO route is comparable to the IV route for drug effectiveness and patient outcomes. The aim of this study was to perform a systematic review of the literature on IV vs. IO administration of drugs during cardiac arrest in order to inform an update of international guidelines.

Section snippets

Protocol and registration

The protocol for the current study was prospectively submitted to the International Prospective Register of Systematic Reviews (PROSPERO) on Sept. 14, 2019 (registration number CRD42020150877). The protocol is provided in the Supplementary contents. This systematic review followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines.5 The PRISMA checklist is provided in the Supplementary contents. The review was commissioned by the International Liaison

Study selection

Search 1 identified 309 unique titles/abstracts, of which 283 were excluded based on initial review of the abstracts (Kappa = 0.71, eFig. 1). After full-text review, an additional 21 studies were excluded for various reasons, leaving 5 studies for inclusion (Kappa = 0.92).12, 13, 14, 15, 16 We identified one additional observational study published after the last search.17

In search 2, 1114 unique titles/abstracts were identified, of which 1098 were excluded based on initial review of the

Discussion

In this systematic review on IV vs. IO administration of drugs during cardiac arrest, only a limited number of studies were identified. This included six adult observational studies and two subgroup analyses from randomized trials. Pooled estimates from the observational studies favoured IV access but with very low certainty of evidence. Subgroup analysis of the ALPS and PARAMEDIC2 trial demonstrated no statistically significant interaction between route of access and study drug on outcomes. No

Conclusion

We identified a limited number of studies comparing IV vs. IO administration of drugs during cardiac arrest. Pooled results from four adult observational studies favoured IV access with very low certainty of evidence. From the subgroup analyses of two randomized clinical trials, there was no statistically significant interaction between the route of access and study drug on outcomes. No studies were identified in neonates or children.

Conflicts of interest

None of the authors have any financial conflicts of interests and none of the authors have academic conflicts related to ongoing or planned trials. Lars W. Andersen was compensated by the American Heart Association on behalf of ILCOR for his work related to this systematic review.

Acknowledgements

The authors would like to thank Carolyn Ziegler, information specialist at the St Michael’s Hospital Health Sciences Library, Li Ka Shing Knowledge Institute Toronto, ON, Canada, for preparing and conducting the systematic searches.

International Liaison Committee on Resuscitation’s (ILCOR) Advanced Life Support task force: Lars W. Andersen, Katherine M. Berg, Bernd W. Böttiger, Clifton W. Callaway, Charles D. Deakin, Michael W. Donnino, Ian R. Drennan, Cindy H. Hsu, Peter Morley, Tonia C.

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