What is the most common type of shock in children?

• A. Neurogenic
• B. Anaphylactic
• C. Hypovolemic
• D. Septic

Answer: (C)

The most common type of shock in children is hypovolemic shock, usually due to dehydration from illness such as gastroenteritis. When a child loses a lot of fluid—through diarrhea, vomiting, or poor intake—the circulating blood volume drops. That reduction lowers preload, which decreases stroke volume and cardiac output. The body corrects this by increasing heart rate and constricting blood vessels to preserve perfusion, so kids often compensate with tachycardia and cool, clammy skin and a slowed capillary refill. Because children can maintain blood pressure until late, subtle signs like decreased urine output, lethargy, and pallor can be early clues.

Other types exist, such as neurogenic (from loss of sympathetic tone, usually with CNS or spinal injury), anaphylactic (severe allergic reaction with vasodilation and capillary leak), or septic (distributive shock from infection). While septic shock is important in pediatrics, dehydration with fluid loss remains the most frequent underlying cause of shock in children, which is why hypovolemic shock is the best choice.