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pathologic hallmarks of emphysema - ANSWER-* dilation of
airways and the destruction of the alveolar walls causing a
decrease in a decrease in elastic recoil
* air is trapped in lungs
* the thoracic cavity changes shape (Barrel shape)
* alveolar desctruction occurs form ballue in the lung tissue
* ballue pockets air and does not assist with gas exchange
* all this causes hypoxemia, hypoventilation, and hypercapnia
* CM= pursed lipped breathing, tripod position, high metabolic
rate, thin,
HYPER-RESONANT PERCUSSION
Chronic Brochitis - ANSWER-* productive cough fir 3 months
for two consecitive years
* mucous secreting cell undergo hyperplasia and increase
mucous production * the mucous can be hard to clear due to
its viscosity and impaired ciliary function
* hyperplasia of the cells is triggered by an irritant such as
smoking
* this usually impairs larger airwars but can eventually involve
all the airways
, * airway becomes narrow and causes obstruction and air
retention * the thorax expands and person becomes hypoxic,
experiences low tidal volumes, and hypoventilates
* ppl experience poor exercise tolerance, wheezing and
dyspnea
* will show obstruction on PFT and a decreases FEV1
* hypoxia causes polycythemia and cyanosis, this may lead to
pulmonary hypertension and cor pulmonale
Pneumonia - ANSWER-2 types= community acquired and
hospital acquired * inmmation or process that causes a build
up of inflammartor exudate in the alveolar sacs
* can be cause by bacterial, viral, fungal, ro aspiration
* elderly have a highest mortality
* Risk Factors= advanced age, suppressed immune system,
underlying lung disease, alcohol abuse, decreased level of
consiousness, chest trauma, dysphagia, smoking, intubation,
malnutrition, immobility, cardiac and liver disease, and
residing in a nursing home
Community Acquired Pneumonia - ANSWER-* outside hospital
* step pneumoniae- is the most common cause of PNA
* staph aureus- arrizes from influenza or viral pneumonia
* strep pyogens- from viral infection such as influenza or
measels
* Klebsiella pneumoniae- common in hospitalized debilitated
pts, diabetes, or alcoholics, high mortality rate in elderly
* haemophilus influenza- common in infants and children and
COPD adults