NRSG 4502 Lecture Notes - Lecture 3: Peak Expiratory Flow, Airway Obstruction, Chronic Lung Disease
18 Mar 2016
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Document Summary
Physiologic differences in infants and children: abdominal breathers (continues until 5-7 years, chest wall is compliant. Children; disease state may appear worse; quicker to see retractions: more susceptible to airway obstruction. Airways are already really small: rr higher* Need to count for full minute; rr more likely to be irregular: higher o2 consumption. In proportion to size: right bronchi slightly more vertical. Where trachea divides; foreign bodies are more likely to get lodged on right side. 1-compliance: ease with which the chest and lungs expand with increased volume and then collapse away from pleural wall with decreased volume. 2-ventilation: passage of air in and out of lungs. 4-gas exchange: o2 and co2 exchange at capillary level. Pallor; if dark skinned look at mucous membranes. Grunting; trying to keep airways open: closing of glottis. Listening; babies are better to listen to when sleeping: breath sounds; listen to all lobes, rr full minute.
