Nursing 2230A/B Chapter Notes - Chapter 4: Smoking Cessation, Pharyngeal Reflex, Intercostal Muscle
13 Mar 2018
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Oxygenation: adult resting hr is 75bpm, electrocardiogram reflects the electrical activity of the conduction system. Intrinsic rate of av node is 40-60 bpm. Intrinsic rate of boh and purkinje network is 20-40 bpm: it monitors the regularity and path of electrical impulse. Does not reflect muscular work of heart: oxygenation involves ventilation, perfusion, and diffusion, ventilation is moving gases in and out of the lungs. Incentive spirometry encourages voluntary deep breathing by providing visual feedback. Think of the city of london offering crack pipes for drug users. Just because you provide that option doesn"t mean they"re going start use it. Sharing pipes can cause hepatitis (65,000$ to treat) or hiv (400,000$) because lips gets cracked, which allows direct access to bloodstream. Respiratory physiology: 5 lobes, right side has 3 lobes and is bigger. They have elastic recoil that facilitate gas exchange. Cardiac pump and gas exchange are intrinsic; they work together.
