Pulmonary- acute, chronic obstructive, chronic restrictive, and bronchogenic carcinoma Flashcards
List of acute diseases
- bacterial pneumonia
- aspiration pneumonia
- viral pneumonia
- tuberculosis
- pneumocystis pneumonia (PCP)
- Severe Acute Respiratory Syndrome (SARS)
What is bacterial pneumonia
- intra-alveolar bacterial infection
- gram-positive bacteria is usually acquired in community
- pneumococcal pneumonia (strepococcal) is most common type of gram-positive pneumonia
- gram-negative bacteria usually develop in host w/ underlying , chronic debilitating conditions, severe acute illness, and recent antibiotic therapy
- gram-negative infections result in early tissue necrosis and abscess formation
Pertinent physical findings for bacterial pneumonia
- shaking chills
- fever
- chest pain if pleuritic involvement
- cough becoming productive of purulent, blood-streaked or rusty sputum
- decreased bronchial breath sounds and/0r crackles
- tachypnea
- increased WBC
- hypoxemia, hypocapnea initially, hypercapnea w/ increasing severity
- CXR confirmation of infiltrate
What is viral pneumonia
interstitial or intra-aveolar inflammatory process caused by viral agents
–such as influenza, herpes, measles, other viruses
Pertinent physical findings for viral pneumonia
- recent Hx of upper respiratory infection
- fever
- chills
- dry cough
- headaches
- decreased breath sounds or crackles
- hypoxemia or hypercapnea
- normal WBC
- CXR confirmation of infiltrate
What is aspiration pneumonia
- aspirated material causes an acute inflammatory reaction w/in lungs
- usually found in pts. w/ impaired swallowing (dysphagia) , fixed neck extension, intoxication, impaired consciousness, neuromuscular disease, and recent anesthesia
Pertinent physical findings for aspiration pneumonia
- s/s begin w/in hours after aspiration event
- dyspnea
- fever
- cough may be dry at onset, progresses to putrid secretions
- tacypnea
- cyanosis
- chest pain over involved area
- wheezes and crackles w/ decreased breath sounds
- hypoxemia or hypercapnea, in severe cases
- WBC shows varying degrees of leukocytosis
- CXR initially shows pneumonitis, chronic aspirations shows necrotizing pneumonia w/ cavitation
What is tuberculosis
infection spread by aerosolized droplets from an untreated infected host.
Incubation period: 2-10 weeks
Primary disease lasts 10 days- 2 weeks
What is post-primary (secondary) TB infection
reactivation of dormant tuberculosis bacillus, which can occur years after the primary infection
Medical treatment of TB
- 2 weeks of antituberculin drugs renders host non-infectious
- During infection: pt. must be isolated in negative pressure room. Anyone entering room must wear potective TB mask and use universal precautions. Pt. must do the same if they leave the room
- medication is taken 3-12 months
TB and HIV
increased incidences of TB w/ HIV
Mild symptoms that may be initially ignored during primary TB
slight productive cough
mild fever
possible CXR changes consistent w/ primary disease
Pertinent physical findings for post-primary TB
- fever
- weight loss
- hilar adenopathy- enlargement of lymph nodes at hilum
- night sweat
- crackles
- hemoptysis (blood-streaked sputum)
- WBC w/ increased lymphocytes
- CXR shows upper lobe involvement w/ air densities, cavitation, pleural involvement, and parenchymal fibrosis
What is pneumocystis pneumonia
- pulmonary infection caused by a fungus in immuno-compromised hosts
- most often found in pts. following transplantation, neonates, or HIV
Pertinent physical findings for pneumocystis pneumonia
- insidious progressive SOB
- nonproductive cough
- crackles
- weakness
- fever
- chest X-ray showing interstitial infiltrates
- CBC w/ no sign of infection
What is SARS
- atypical respiratory illness caused by coronovirus
- initial outbreak in South China and spread through Asia to worldwide
Pertinent physical findings for SARS
- high temp
- dry cough
- decreased WBC, platelets, and lymphocytes
- increased liver function tests
- abnormal CXR w/ boderline breath sounds changes
Chronic Obstructive Diseases: What is chronic obstructive pulmonary disease
a disease state characterized by airflow limitation that is not fully reversible. The air flow limitation is usually both progressive and associated with an abnormal inflammatory response of the lungs to noxious particles or gasses
Chronic Obstructive Diseases: How many stages of COPD
4
Chronic Obstructive Diseases: COPD Stage 1 (mild)
FEV1/FVC <70%
FEV1 equal or less than 80% predicted
w/ or w/out chronic symptoms
Chronic Obstructive Diseases: COPD Stage 2 (moderate)
FEV1/FVC <70%
50%