Which of the following is a reversible cause listed under Ts for pediatric arrest?

• A. Tamponade
• B. Triage
• C. Therapy
• D. Torsion

Answer: (A)

Tamponade is the reversible cause listed under the Ts for pediatric arrest because it creates obstructive physiology by compressing the heart and preventing adequate filling. When fluid accumulates in the pericardial space, the heart can’t stretch to fill properly during diastole, leading to little or no effective cardiac output and pulselessness. This is a situation where the arrest is potentially reversible if the pressure is relieved, typically through pericardiocentesis or surgical drainage, which can restore normal filling and improve chances of return of spontaneous circulation. In practice, tamponade is suspected in the context of trauma, chest surgery, or signs of shock with muffled heart sounds or distended neck veins, and it is treated emergently during resuscitation.

Torsion, while it can cause acute problems, is not a standard reversible cause categorized under the Ts for pediatric arrest. Other Ts like tension pneumothorax, toxins, thrombosis, and trauma are recognized possibilities, but torsion isn’t part of that typical list.