Pulmonary Pathophysiology Flashcards
What is the difference between obstructive and restrictive pulmonary diseases?
Obstructive diseases - flow of air is impeded (during expiration)
Restrictive diseases - volume of air is decreased
What are the four main categories of pulmonary diseases?
- Infectious/inflammatory disorders
- Obstructive
- Restrictive
- Malignancy
What are two types of infectious pulmonary disorders?
- Pneumonia
2. Tuberculosis (TB)
What are two types of obstructive pulmonary diseases?
- COPD
2. Asthma
What are the two types of COPD?
- Chronic bronchitis
2. Emphysema
What are two types of restrictive pulmonary disease?
- Pulmonary fibrosis
2. Cystic fibrosis
What is pneumonia?
Infectious process in the lungs
What are risk factors for pneumonia?
Increasing age, dysphagia, immunosuppression, diabetes, malnutrition, dehydration, hospitalization, immobility, altered consciousness, and smoking history
What is the pathogenesis of pneumonia?
Normal immune response does not eliminate bacteria/virus - fluid buildup (parenchyma) causes mucosal membrane damage and alveolar capillary membrane damage (impedes oxygen diffusion)
What are the two types of pneumonia and what do lobes do they affect?
- Bacteria - limited to 1 or 2 lobes
2. Virus - bilateral (both sides of lungs)
What is aspiration pneumonia?
Impaired airway protection - fluid or food aspirated into the lungs
Which lung is aspiration pneumonia more likely to affect?
Right - main bronchus is more vertical
What are two symptoms associate with aspirated pneumonia?
Seizures and depressed gag reflex
What is the mortality rate for aspirated pneumonia?
5% (low)
What is a major sign/symptom aspiration pneumonia?
Coughing/SOB with eating or shortly after
What is a PT implication for aspiration pneumonia?
Head/neck positioning and posture during swalling
What is PCP?
Pneumocystis carinii pneumonia - new pneumocytes formed affecting participation in gas exchange
What population is most likely to get PCP?
AIDS or immunosuppressed patients
How long does pneumonia last?
1-2 weeks
What is treatment for pneumonia?
Antibiotics, hydration, exercise for pulmonary hygiene, and vaccines for >65 years old, diabetes, chronic lung disease, or immunocompromized patient
How is pneumonia diagnosed?
History of URI, sputum culture, chest x-ray, urine antigen, auscultation (crackles, wheezing, decreased lung sounds)
What disease is the 6th leading cause of death in the US?
Pneumonia
What is TB?
Infectious disease of the lungs - transmitted by inhaled droplets (sneeze, cough, etc) - causes proliferation of epithelial cells in alveoli
Is TB asymptomatic or symptomatic?
Asymptomatic