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Area of Science:

  • Pediatric Cardiology
  • Neonatal Critical Care
  • Pharmacology

Background:

  • Low cardiac output syndrome (LCOS) is a complication in neonates post-cardiac surgery.
  • Corticosteroids are used to improve hemodynamic status in these patients.
  • This study evaluated a prophylactic stress-dose corticosteroid (SDC) regimen versus placebo.

Purpose of the Study:

  • To compare the efficacy of prophylactic SDC against placebo in neonates undergoing cardiac operations.
  • To assess the impact of SDC on inflammation, adrenocortical function, and hemodynamic outcomes.
  • To determine the safety of SDC regarding hypothalamic-pituitary-adrenal axis suppression.

Main Methods:

  • Randomized controlled trial involving 40 neonates undergoing elective open heart operations.
  • SDC group received methylprednisolone perioperatively and hydrocortisone infusion postoperatively for 5 days.
  • Placebo group received similar administration. Interleukin-6 (IL-6) was the primary endpoint; secondary outcomes included cortisol, IL-10, C-reactive protein, ventricular contractility, inotropic score, and sternal closure time.

Main Results:

  • SDC group showed significantly lower postoperative IL-6 levels compared to placebo.
  • SDC was associated with lower inotropic scores, earlier sternal closure, and less deterioration in ventricular strain.
  • SDC therapy did not suppress the hypothalamic-pituitary-adrenal axis more than placebo, and cortisol levels remained stable in the placebo group post-operation.

Conclusions:

  • A 5-day postoperative SDC regimen is safe for neonates after cardiac surgery.
  • SDC did not lead to hypothalamic-pituitary-adrenal axis suppression.
  • Cardiac operations in neonates did not result in adrenal insufficiency.