Does fluid bolus therapy increase blood pressure in children with sepsis?

Area of Science:

• Pediatric Critical Care Medicine
• Emergency Medicine
• Pediatric Sepsis Management

Background:

• Sepsis is a life-threatening condition in children, often requiring fluid resuscitation.
• Fluid bolus therapy (FBT) is a common intervention for pediatric sepsis, but its immediate hemodynamic effects require detailed understanding.
• Understanding the impact of FBT on blood pressure and shock parameters is crucial for optimizing treatment strategies.

Purpose of the Study:

• To evaluate the acute effects of fluid bolus therapy (FBT) on mean blood pressure (MBP) in children diagnosed with sepsis.
• To assess the impact of FBT on systemic vascular resistance, shock index, and shock phenotype (warm or cold) in pediatric sepsis patients.

Main Methods:

• A prospective observational study was conducted in a pediatric emergency department.
• Participants included children meeting international consensus criteria for sepsis who received FBT (10-20 mL/kg of 0.9% saline).
• Mean blood pressure (MBP), systemic vascular resistance index (TSVRi), shock index, and shock phenotype were recorded at baseline, 5 minutes, and 60 minutes post-FBT.

Main Results:

• Fifty fluid boluses were administered to 41 children. MBP initially decreased post-FBT (78 mmHg baseline to 72 mmHg at 5 min) before returning towards baseline (75 mmHg at 60 min).
• Hypotension prevalence increased transiently at 5 minutes (16% baseline to 26% at 5 min).
• Systemic vascular resistance index (TSVRi) and shock index generally decreased post-FBT, with a transient increase in warm shock prevalence at 5 minutes.

Conclusions:

• Fluid bolus therapy in pediatric sepsis initially led to a transient decrease in mean blood pressure.
• The hemodynamic effects of FBT, including its utility in improving MBP and patient outcomes, require further investigation.
• The study highlights the complex and dynamic hemodynamic response to FBT in pediatric sepsis.