TABLE 99.2 RESTING RESPIRATORY RATE BY AGE Age Breaths per minute Neonate 2–12 mo 12 mo–2 yrs 2–12 yrs Adolescent 30–50 30–40 22–30 16–24 12–20 TABLE 99.3 DIAGNOSIS OF ACUTE RESPIRATORY FAILURE FROM PULMONARY CAUSES IN CHILDREN Clinical findings Vital signs: tachycardia, tachypnea or bradypnea, hypoxemia General appearance: cyanosis, diaphoresis, confusion, restlessness, fatigue, shortness of breath, apnea, grunting, stridor, retractions, decreased air entry, wheezing Blood gas abnormalities PaCO >50 mm Hg with acidosis (pH 40 mm Hg with severe distress PaO