features of chronic bronchitis vs pulmonary emphysema
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Clinical manifestations
- age at diagnosis: > 50-60 years
- dyspnea: severe
- cough: after dyspnea starts
- sputum: scanty, mucoid
- bronchial infections: infrequent
- respiratory insufficiency: often in terminal phase
- chest X-ray:
- hyperinflation, +/- bullous changes, small heart
- paO2: 65-75 mm Hg
- paCO2: 35-40 mm Hg
- hematocrit: 35-45%
- pulmonary hypertension:
- none or mild at rest, moderate with exercise
- cor pulmonale: rare, except in terminal phases
- pulmonary elastic recoil: severely diminished
- respiratory resistance: normal to slightly increased
- diffusing capacity: decreased
- age at diagnosis: > 50-60 years
- dyspnea: mild
- cough: before dyspnea starts
- sputum: copious, purulent
- bronchial infections: frequent
- respiratory insufficiency: repeated
- chest X-ray:
- increased bronchovascular markings at base, large heart
- paO2: 45-60 mm Hg
- paCO2: 50-60 mm Hg
- hematocrit: 50-55%
- pulmonary hypertension:
- moderate to severe at rest, worsens with exercise
- cor pulmonale: common
- pulmonary elastic recoil: normal
- respiratory resistance: high
- diffusing capacity: normal to mildly diminished
Additional terms
References
- ↑ Harrison's Principles of Internal Medicine, 13th ed. Isselbacher et al (eds), McGraw-Hill Inc. NY, 1994, pg 1187