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Published on: August 28, 2021
Adverse cardiovascular events are common during dexmedetomidine administration in neonates and infants during
Miikka Tervonen1,2, Johanna Cajanus1, Merja Kallio1,2
1Department of Children and Adolescents, Oulu University Hospital, Oulu, Finland.
Insights
Dexmedetomidine sedation in infants can cause cardiovascular events like bradycardia. Neonates may need lower doses of this sedative to improve safety during intensive care.
Area of Science:
- Pediatric Intensive Care
- Neonatal Pharmacology
- Cardiovascular Safety
Background:
- Dexmedetomidine is a commonly used sedative in pediatric intensive care.
- Assessing its safety profile in neonates and infants is crucial due to their unique physiology.
Purpose of the Study:
- To evaluate the safety of dexmedetomidine in neonates and infants undergoing intensive care.
- To identify potential adverse cardiovascular events associated with its use.
Main Methods:
- Retrospective cohort study of 172 infants (birth to 6 months) who received dexmedetomidine.
- Data collected from Oulu University Hospital's pediatric intensive care unit (2010-2016).
- Adverse cardiovascular outcomes defined using the Paediatric Early Warning Score.
Main Results:
- Adverse cardiovascular events, including bradycardia and severe hypotension, were frequent.
- Neonates and younger infants (1-3 months) experienced higher rates of bradycardia compared to older infants.
- A dose-dependent relationship was observed between dexmedetomidine infusion rates and adverse events.
Conclusions:
- Dexmedetomidine administration is associated with common adverse cardiovascular events in neonates and infants.
- Lower dosages of dexmedetomidine may be necessary for sedating neonates to mitigate risks.
Aim:
This study aimed to assess the safety of a commonly used sedative, dexmedetomidine in neonates and infants during intensive care.
Methods:
A retrospective cohort study was conducted in the paediatric intensive care unit at Oulu University Hospital. The study population consisted of all children from birth up to 6 months of age who received dexmedetomidine during 2010-2016. Adverse cardiovascular outcomes were defined as abnormal heart rates or blood pressure values according to the Paediatric Early Warning Score.
Results:
Of the 172 infants, 56% had congenital malformation, and 48% had undergone surgery. Neonates and 1-3-month-olds experienced bradycardia (86% vs. 73% in 1-3-month-olds and 50% in 3-6-month-olds, p = 0.001) and severe bradycardia (17% vs. 14% in 1-3-month-olds and 0% in 3-6-month-olds, p = 0.005) more often than older patients. The median maximum rate of dexmedetomidine infusion was 0.86 μg/kg/h (IQR = 0.60-1.71 μg/kg/h). A dose-dependent increase in bradycardia and severe hypotension was found. Adverse cardiovascular events were managed with additional fluid boluses and discontinuation of the infusion.
Conclusion:
Adverse cardiovascular events were common during dexmedetomidine administration in neonates and infants. Lower dexmedetomidine doses may be required in sedating neonates.
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