Week 2 - Pneumonia Flashcards
what is pneumonia
- a lower respiratory infection that causes inflammation of the alveoli & lung parenchyma caused by a microbial agent
- and the alveoli may fill with fluid or pus
what are risk factors for pneumonia (11)
things that decrease the resp. system defence:
- weak immune system
- decreased consciouness (=depress the cough)
- tracheal intubation
- post-op pt (not coughing)
- smoking
- air pollution
- COPD & asthma
- prior infection: flu or cold
- immobility
- recent use of antibiotics
- conditions that increase risk of aspiration
how do organisms that cause pneumonia get reach the lungs? (3)
- inhalation
- aspiration
- hematogenous spread
what happens oce the germs get into the lungs
- the alveolar sacs become inflamed & fill w fluid, RBCs, WBCs, and bacteria
= sacs lose ability to inflate and deflate (which are imp. for gas exchange)
= pt starts to experience hypoxemia bc O2 cannot transfer across capillary wall to attach to RBCs to supply body w O2 and body keeps CO2 instead
what are 2 types of pneumonia
- community acquired
2. hospital acquired
what is community acquired pneumonia
- when pts obtains that germs that cause the bacteria outisde of the healthcare system
- onset is in the community or during the first 2 days of hospitalization
what is hospital acquired pneumonia
- pneumonia occurring 48 hr or longer after hospital admission
what is community acquired pneumonia often caused by (3)
- conditions incurring aspiration
- resp infection & recent use of antibiotics
- COPD
what is hospital acquired pneumonia often caused by/risk factors for (2)
- pts on mechanical ventilation
- bacteria
what are symptoms of pneumonia (10)
Productive cough, Pleuritic pain Neuro changes (fatigue, confusion r/t hypoxemia) Elevated labs (WBC, CO2) Unusal breath sounds (crackles) Mild to high fever O2 sats decreased Nausea and vomitting Increased HR and RR Activity intolerance (SOB) , aching joint pain
chills
how might pneumonia be diagnosed (7)
- history
- physical exam
- chest xray
- sputum C&S
- ABGs
- blood cultures
- CBC
what are some potential complications of pneumonia (10)
- pleural effusion
- pleurisy
- atelectasis
- delayed resolution from infection
- lung abcess
- empyema
- pericarditis
- meningitis
- bacteremia
- endocarditis
what is pleurisy
- inflammation of the pleura
what is atelectasis
- alveolar collapse
what are indications of improvement in a pt w pneumonia (3)
- decreased temp
- improved breathing
- reduced chest pain
what is treatment for pneumonia (3)
- antibiotics for bacterial
- antivirals for viral pneumonia
- treat symptoms (supportive measures)
what are some antibiotics used for bacterial pneumonia (4)
- ceftazadime
- vancomycin for MRSA
- gentamicin
- ciprofloxacin
in uncomplicated cases, a pt usually response to anitbiotics therapy in how long
48-72 hrs
how is the antibiotic chosen for bacterial pneumonia
- tailored to the specific bacteria based on sputum sample
what are some antivirals used for viral pneumonia (3)
- amantadine
- zanamivr (relenza)
- osaltamivir (tamiflu)
what supportive measures are used for treatment of pneumonia (7)
- o2 therapy for hypoxemia
- analgesics for chest pain
- antipyretics for fever
- rest
- fluids
- nutrition
- positioning
describe nutritional therapy for a pt with pneumonia (3)
- fluid intake of at least 3L per day (or IV if oral intake cant be maintained)
- at least 1500 cal per day
- small, frequent meals (better tolerated d/t dyspnea)
when should fluid intake be individualized? why is fluid intake imp.
- if pt on fluid restriction ex. heart failure
- fever –> dehydration & lose water thru breathing
why is high cal important for treatment of pneumonia
- to provide energy for increased metabolic processes