Table 2.
Treatment/Strategy | Preventive or Reactive/Reparative | Status of Clinical Research Trials | Feasibility | References |
---|---|---|---|---|
CPB techniques: DHCA vs. ACP | Preventive | 2 published; low ACP flow rates | +++ | 35–40 |
NIRS monitoring and treatment of low rSO2;autoregulation | Preventive | No prospective studies | +++ | 3, 8–10 |
Anesthetic regimens: dexmedetomidine vs. GABA/NMDA agents | Preventive | Retrospective data; no prospective studies | +++ | 41–47 |
Therapeutic hypothermia | Preventive/reactive | None in cardiac surgery; complete neonatal HIE, ongoing pediatric cardiac arrest | ++++ | 49–53 |
Remote ischemic preconditioning | Preventive | One controlled study ongoing | ++++ | 57 |
Erythropoietin | Preventive/reactive/reparative | One phase I/II trial underway | ++ | 58–63 |
Neurotrophic factors: BDNF | Preventive/reactive/reparative | None | ++ | 66,67 |
Umbilical cord stem cells | Preventive/reactive/reparative | None | + | 69,70 |
Abbreviations: CPB, cardiopulmonary bypass; DHCA, deep hypothermic circulatory arrest; ACP, antegrade cerebral perfusion; NIRS, near-infrared spectroscopy; rSO2, regional cerebral oxygen saturation; GABA, γ-aminobutryric acid receptor agonist; NMDA, N-methyl-D-aspartate receptor antagonist; HIE, hypoxic-ischemic encephalopathy; BDNF, brain-derived neurotrophic factor. Feasibility: ++++, very feasible with current practices; +++, feasible with current practices; ++, less feasible; experimental therapy that would alter current practices; +, not feasible; experimental therapy for future study.