Pediatric anesthesia & critical care

Effectiveness of Dexmedetomidine as Myocardial Protector in Children With Classic Tetralogy of Fallot Having Corrective Surgery: A Randomized Controlled Trial

J Cardiothorac Vasc AnesthPublished Randomised controlled trial

Authors' conclusion

Dexmedetomidine during CPB is an effective cardioprotective agent in TOF children having surgery.

Study context

Population
Indonesian children with classic tetralogy of Fallot undergoing corrective surgery with cardiopulmonary bypass (CPB)none excluded
Participants
66 children
Comparison
Dexmedetomidine during CPB vs placebo
Methodological detailsprospective, parallel, block randomization, double-blinded preparation of treatment agents, Single centre: National Cardiovascular Center Harapan Kita, Indonesia
  • Prospective
  • Parallel
  • Block randomization
  • Double-blinded preparation of treatment agents
  • Single centre: National Cardiovascular Center Harapan Kita, Indonesia

Primary result

As reported in the abstract

Troponin I · 6 and 24 hours after CPB
GroupValue24 hours
Dexmedetomidine (DEX)30.48 ± 19.338.89 ± 5.42
Placebo42.73 ± 27.1614.04 ± 11.17

Value

Dexmedetomidine (DEX)30.48 ± 19.33
Placebo42.73 ± 27.16

24 hours

Dexmedetomidine (DEX)8.89 ± 5.42
Placebo14.04 ± 11.17
  • DEX vs Placebo: P = 0.039 — 6 hours
  • DEX vs Placebo: P = 0.02 — 24 hours

Further findings

OutcomeP value
Interleukin-6 · 6 and 24 hours after CPBDEX vs Placebo · 6 hoursP = 0.03
Interleukin-6 · 6 and 24 hours after CPBDEX vs Placebo · 24 hoursP = 0.035
Lactate · 1, 6 and 24 hours after CPBDEX vs Placebo · 1 hourP < 0.01
Lactate · 1, 6 and 24 hours after CPBDEX vs Placebo · 6 hoursP = 0.048
Lactate · 1, 6 and 24 hours after CPBDEX vs Placebo · 24 hoursP = 0.035
Vasoactive inotropic score during ICU monitoringP = 0.049
Length of ventilation, ICU stayDEX vs Placebo · ventilationP = 0.313
Length of ventilation, ICU stayDEX vs Placebo · ICU stayP = 0.087
Mortality · up to 30 daysP > 0.99

Interleukin-6 · 6 and 24 hours after CPB

Lower with DEX

Lactate · 1, 6 and 24 hours after CPB

Lower with DEX

Haemodynamics · from 6 hours after bypass

DEX increased cardiac output and index and decreased systemic vascular resistance

Vasoactive inotropic score during ICU monitoring

Reduced with DEX

Length of ventilation, ICU stay

Not significantly affected by DEX

Mortality · up to 30 days

Comparable across groups

Original publication

Effectiveness of Dexmedetomidine as Myocardial Protector in Children With Classic Tetralogy of Fallot Having Corrective Surgery: A Randomized Controlled Trial. J Cardiothorac Vasc Anesth. Published 9 October 2023. doi:10.1053/j.jvca.2023.10.004

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