Effects of continuous ketamine infusion on hemodynamics and mortality in critically ill children

Sojin Park1, Ah Young Choi2, Esther Park2

  • 1Department of Pharmaceutical Services, Samsung Medical Center, Seoul, Republic of Korea.

Plos One
|October 19, 2019
PubMed

Insights

Continuous ketamine infusion in pediatric intensive care units (PICUs) did not significantly alter blood pressure or vasopressor use. This sedative agent can be safely administered without causing hemodynamic instability in critically ill children.

Area of Science:

  • Pediatric Critical Care Medicine
  • Pharmacology
  • Hemodynamics

Background:

  • Continuous sedation is common in pediatric intensive care units (PICUs).
  • Ketamine is an anesthetic agent with potential sedative properties.
  • Limited data exists on the hemodynamic and mortality effects of continuous ketamine infusion in critically ill children.

Purpose of the Study:

  • To investigate the hemodynamic and mortality effects of continuous ketamine infusion in critically ill pediatric patients.
  • To compare vital signs, vasopressor use, and sedation/pain scores before and after ketamine initiation.
  • To assess the association between continuous ketamine and mortality.

Main Methods:

  • Retrospective cohort study in a tertiary PICU.
  • Included patients receiving continuous sedation for ≥24 hours between 2015-2017.
  • Compared hemodynamic parameters and vasogenic medication use 12 hours pre- and post-ketamine initiation.
  • Multivariate logistic regression used to compare mortality rates between ketamine and non-ketamine groups.

Main Results:

  • 82 patients received continuous ketamine (median infusion rate 8.1 mcg/kg/min, median duration 6 days).
  • Heart rate and respiratory rate decreased significantly after ketamine infusion (P=.033 and P=.001, respectively).
  • Blood pressure and vasogenic medication use did not change significantly.
  • Continuous ketamine was not a significant risk factor for mortality (HR 1.352, CI 0.458-3.996).

Conclusions:

  • Continuous ketamine infusion can be used in PICU settings without inducing significant hemodynamic instability.
  • Further randomized controlled trials are needed to confirm these findings on hemodynamics, sedation, and mortality.

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