Disorders of Ventilation

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Unformatted text preview: urve – More later, be familiar, read – Demand of O2 determines how much O2 goes into tissue • (Every heme can hold 4 oxygens) • Exercise decreases affinity so more O2 is available Oxygenation of Inspired Air Oxygenation of Inspired Air Why do you breathe? To get rid of CO2! Regulation of Respiration Regulation of Respiration • Involuntary – Controlled by the Medulla Oblongata in the Brain • Drive to breathe? – Carbon Dioxide and Hydrogen ions (Blood Acidity – pH) – Chemoreceptors sense and talk to brain • Sensory neurons in carotid arteries and Assessing Respiration Assessing Respiration • Rate (12­20 per/min) • Depth – Pleurisy: shallow breaths • Character – – – Sternocleidomastoid & trapezius used if diff resp labored or not? Retractions, hair pulled in to contract • Lung sounds • O2 saturation – Norm 95­100% – COPD patients have air trapping probs, no elasticity • Normal is 85% so don’t give straight O2 or they die • Drive to breath is not high CO2, but is lower O2 Assessing Respiratory Patterns Assessing Respiratory Patterns • Tachypnea: fast • Eupnea: normal breathing 12­ 20BPM • Apnea: no breathing • Bradypnea: slow breathing <12 breathing • Dyspnea: diff breathing – COPD or CHF • Ort...
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This document was uploaded on 03/05/2014 for the course NURS 115 at Liberty University Duplicate School.

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