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Pediatric visits account for 20–25% of visits to emergency departments in the United States. Most of these encounters will occur in general emergency departments, which may have limited capabilities to care for the critically ill child.1–3 The priorities in the assessment and management of the pediatric patient are similar to those of the adult patient. The quoted ABCs of airway, breathing, and circulation still apply and are first and foremost in the evaluation of the young infant and child. However, there are certain anatomic, physiologic, developmental, and social considerations that are unique to this population and that must be taken into account during the evaluation and treatment. This chapter will focus on the key differences in the treatment of the critically ill child. A complete discussion of the many procedures, and the presentation of every critical condition in pediatric patients, is well outside the scope of this text. See Table 62-1 for a list of medications used in pediatric resuscitation.
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Recognition of Respiratory Distress
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Compared to adults, infants and children have anatomic and physiologic characteristics that make them more susceptible to respiratory emergencies. During the first 6 months of life, they are obligate nose breathers, and their narrow nasal passages tend to increase resistance to flow and can easily become occluded with a simple upper respiratory illness that will lead to obstruction. Following Poiseuille's law of resistance in which resistance is inversely proportional to the radius to the power of four (R ∝ 1/r4), small changes in the radius (mucosal edema, debris, etc.) will cause great increases in resistance. Infants and children have weak abdominal muscles and diaphragm, which may tire easily if strained. In addition, they have faster metabolic rates, which require a higher oxygen demand. This higher oxygen demand, coupled with a decreased functional residual capacity, makes them more vulnerable to decreases in their oxygen levels compared ...