While Caring For A 2-year Old Female Toddler That Has

While caring for a 2-year old female toddler that has croup you have witnessed the child in respiratory distress. The child has a frequent loud barky cough. The child is sitting up leaning forward and develops cyanosis when cought. She has anterior retractions. Her respiratory rate is 52 and pulse is 148 as you monitor the child closely your biggest concern is Cardiac arrest or respiratory failure?