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Unit 12 - Respiratory System Flashcards

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Unit 12 - Respiratory System Flashcards

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1 of 90

Definition


- reversible obstructive lung disease, inflammation and increased
reactivity of smooth muscle airways to various stimuli
- extrinsic (allergic)
- intrinsic (nonallergic)
- adult-onset, exercise induced, occupational


Etiology: genetic, air pollution, environmental exposures (pollen,
mold, dust)


Clinical Features:

,- Chest tightness
- wheezing on expiration
- cough
- dyspnea


Pathogenesis:
- Acute inflammatory response
- bronchial smooth muscle contraction
- increased vascular permeability
- edema
- thick mucus production
- impaired mucocilliary function


Treatment: avoid environmental triggers, long-term and quick-
relief medications including bronchodilators and corticosteroids



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COPD: Asthma Laryngeal cancer




Cystic fibrosis hypoxic hypoxia


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, 2 of 90

Definition



40 mmHg



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venous PO2 arterial Po2




venous Pco2 venous Ph


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3 of 90

Term



Active breathing expiration muscles



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- Scoliosis
- Kyphosis - internal intercostals
- Obesity - abdominals
- Pleurisy - quadratus lumborum
- Rib fracture




rupture of apical pleural blebs; no
underlying lung disease

, passive recoil of lungs, rib cage, - common in smokers
and diaphragm
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Definition




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Normal volume-time curve Residual volume




obstructive lung disease obstructive sleep apnea


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5 of 90

Definition



a heterogeneous lung condition that causes persistent airflow
obstruction, characterized by:
- chronic respiratory symptoms (dyspnea, cough, expectoration of
mucus/sputum)

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