You are evaluating a 3-year-old conscious child with bradycardia and poor perfusion in the emergency department

(B). Alleviating respiratory compromise and maintaining adequate breathing and oxygenation may correct clinically significant bradycardia. Start monitoring and obtain IV access. If bradycardia persist it is the time for chest compressions and if continues you need to start drug therapy. During resuscitation correct possible underlying causes referred collectively as the 6 Hs (hypoxia, hypovolemia, hydrogen ions [acidosis],hypokalemia or hyperkalemia, hypoglycemia, hypothermia), and 5 Ts (toxins, tamponade, tension pneumothorax, thrombosis [in either the pulmonary or cardiac circulations], and trauma [causing hypovolemia, intracranial hypertension, cardiac compromise or tamponade]