Cardiac function and hemodynamics in Kenyan children with severe malaria

Area of Science:

• Pediatrics
• Cardiology
• Infectious Diseases

Background:

• Severe malaria poses a significant mortality risk in sub-Saharan Africa.
• Cardiovascular compromise and metabolic acidosis are known correlates of mortality in severe malaria.
• The specific role of cardiac dysfunction in severe childhood malaria pathogenesis is not well understood.

Purpose of the Study:

• To investigate the role of cardiac dysfunction in the pathogenesis of severe childhood malaria.
• To assess cardiac function and hemodynamic status in children with severe malaria using echocardiography.
• To compare hemodynamic parameters between children with and without metabolic acidosis.

Main Methods:

• Echocardiography was used to evaluate cardiac function and hemodynamics in 30 children with severe malaria.
• Measurements were taken on admission (day 0), day 1, and at discharge.
• Hemodynamic parameters were compared between acidotic (base deficit >8) and non-acidotic children.

Main Results:

• Children with severe malaria exhibited markers of hemodynamic compromise, including tachycardia and low stroke volume index, which improved over time.
• Cardiac function, assessed by ejection fraction and left myocardial performance index, was mildly abnormal on admission compared to discharge.
• Acidotic patients demonstrated worse hemodynamic indicators, including a higher inferior vena cava collapsibility index and lower stroke volume index, indicating poorer cardiac function.

Conclusions:

• Children with severe malaria and metabolic acidosis present with evidence of hypovolemia.
• Cardiac dysfunction is evident in children with severe malaria, particularly those with metabolic acidosis.
• Fluid resuscitation in acidotic patients led to an increase in stroke volume index.