Effectiveness of Dexmedetomidine vs Ketamine in Paediatric Patients Undergoing MRI
Introduction: Magnetic Resonance Imaging (MRI) is not painful, but frightening especially in children leading to movement and artefacts causing prolongation of the procedure. Though analgesia is not required, but being a noisy suite, deep sedation is a prerequisite for it. Dexmedetomidine (DEX)...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
JCDR Research and Publications Private Limited
2020-11-01
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| Series: | Journal of Clinical and Diagnostic Research |
| Subjects: | |
| Online Access: | https://jcdr.net/articles/PDF/14196/45140_CE[Ra1]_F(KM)_PF1(F_KM)_PFA(F_KM)_PN(SL).pdf |
| Summary: | Introduction: Magnetic Resonance Imaging (MRI) is not painful,
but frightening especially in children leading to movement
and artefacts causing prolongation of the procedure. Though
analgesia is not required, but being a noisy suite, deep sedation
is a prerequisite for it. Dexmedetomidine (DEX) and Ketamine
both anaesthetic drugs can achieve the sedation in the children
but never had been compared.
Aim: To compare the effect of DEX and Ketamine in paediatric
patients undergoing MRI under sedation.
Materials and Methods: This was a cross-sectional study
carried out from August 2017 to July 2018 included 74 patients.
All patients were separated into Group K for Ketamine (loading
dose of 1 mg/kg, intravenous over 10 min followed by infusion
of 10-15 mcg/kg/min) and Group D for DEX (loading dose of
1 mcg/kg over 10 min followed by infusion of DEX at 0.2-0.7
mcg/kg/h). Ramsay sedation score of five was considered as
onset of sedation. Midazolam 0.1 mg/kg IV was decided as
rescue sedation. Unpaired t-test was applied for the continuous
variables.
Results: Sixty-one patients were analysed, 31 in Group K, and
30 in Group D. The onset time for sedation in Group K was
6.30±1.32 minutes and 12.20±SD=2.01 minutes in Group D
which was significantly shorter in Group K (p=0.001). However,
the time to Modified Aldrete Score of 10/10 was higher in
Group K (21.10±1.84 minutes) vs (13.73±1.89 minutes) in
Group D which is statistically significant. (Mean±SD; p=0.001).
No adverse events were reported in both the groups.
Conclusion: Ketamine and DEX can both be used for MRI
sedation in children successfully without any adverse effects.
The onset of sedation is faster in Ketamine, but discharge and
recovery are significantly delayed with Ketamine as compared |
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| ISSN: | 2249-782X 0973-709X |