Preemptive Low-Dose Norepinephrine Infusion for Reducing Hemodynamic Instability During Craniotomy for Brain Tumor...

Area of Science:

• Anesthesiology
• Neurosurgery
• Pharmacology

Background:

• Previous studies on prophylactic norepinephrine have limitations.
• The benefit of preemptive norepinephrine over reactive use in TIVA for brain tumor resection is unclear.

Purpose of the Study:

• To evaluate if preemptive low-dose norepinephrine infusion reduces hemodynamic instability during craniotomy for brain tumor resection under propofol-remifentanil TIVA.

Main Methods:

• Adult patients undergoing craniotomy for brain tumor resection were randomized.
• Groups: preemptive continuous infusion of norepinephrine (CINE) vs. conventional management with reactive norepinephrine.
• Primary endpoint: moderate or severe hemodynamic instability.

Main Results:

• The CINE group experienced less moderate hemodynamic instability compared to conventional management.
• Fewer episodes and less anesthesia time affected by moderate instability in the CINE group.
• Rescue medication use was significantly lower in the CINE group (16.7% vs. 100%).

Conclusions:

• Preemptive low-dose norepinephrine infusion effectively reduced moderate hemodynamic instability during TIVA for brain tumor resection.
• This strategy showed potential hemodynamic benefits over conventional management.
• Larger trials are needed to confirm these findings.