respiratory pathology 4 Flashcards
acute bronchitis
temporary inflammation of the bronchi (3 weeks)
symptoms of acute bronchitis
Inflammation of bronchi
* Temporary <3 weeks
* Cough and sputum
* Usually viral
management of acute bronchitis
paracetamol
drinking of fluids
exacerbation of COPD
changes in the colour of the sputum
fevers
increased breathlessness
cough
wheeze
yellow purulent sputum
bacterial infection
treatment of COPD management
steroids
antibiotics - amoxicillin
- doxycycline
- co-trimoxazole
- clarithromycin
organisms that cause the exacerbation of COPD
Streptococcus pneumoniae
* Haemophilus influenzae
* Moraxella catarrhalis
* Viral
pneumonia
inflammation of the lung parenchyma that is the lung cells
risk factors for pneumonia
smoking and alcohol intake
age extremes
viral illness
pre -existent lung disease
chronic illness
immunocompromised
hospitalisation
Intravenous drug users
types of pneumonia
bronchopneumonia
lobar pneumonia
interstitial pneumonia
symptoms of pneumonia
.Fever, rigors, myalgia
* Cough and sputum
* Chest pain (pleuritic)
* Dyspnoea
* Haemoptysis
rusty brown sputum
pneumonia
signs of pneumonia
Tachypnoea
* Tachycardia- increased heart beat
* Reduced expansion- there is solidification of the alveoli fluid filled alveoli
* Dull percussion- more solid because of the consolidation of matter
* Bronchial breathing- listen over the trachea to check for this
* Crepitations
Rusty brown sputum * Vocal resonance
investigations of pneumonia in primary care setting
chest x ray
investigations of pneumonia in the hospital
Bloods – serum biochemistry, FBC, CRP
Blood cultures
CXR
Sputum culture, viral throat swab
Legionella urinary antigen
differential diagnosis of pneumonia
- Tuberculosis
- Lung cancer
- Pulmonary embolism
- Pulmonary oedema
- Pulmonary vasculitis (Wegners granulomatosis)
causative agents of pneumonia
Strep Pneumoniae 39%
* H. Influenzae 5.2%
* Legionella 3.6%
* Staph aureus 1.9%
* Moxarella catarrhalis 1.9%
* Mycoplasma pneumoniae 10.8%
* Chlamydophila pneumoniae 13.1%
* Chlamydophyla psittaci 2.6%
* Coxiella burnetii 1.2%
* All viruses
classification of pneumonia
community acquired
hospital acquired
community acquired pneumonia
typical- cause the normal signs of pneumonia
atypical -present with different ( not normal) symptoms of pneumonia
typical pneumonia causing bacteria
Streptococcus pneumoniae
* Haemophilus influenzae
* Mycoplasma pneumoniae
atypical pneumonia causing bacteria
Legionella pneumophilia- fresh water
* Chlamydia pneumoniae- sexually acquired
* Chlamydia psittaci- birds
* Coxiella burnetti- farm animals
* Moraxella catarrhalis- causes COPD
* Viruses- influenza , varicella , SARS
nosocomial bacteria
acquired by staying in the hospital for more than 48 hours
examples of nosocomial bacteria
Enterobacteria
* Staphylococcus aureus
* Pseudomonas aerigunosa
* Klebsiella pneumoniae
organisms that cause a cavitation pneumonia
MRSA
Klebsiella pneumoniae
TB
severity test for pneumonia
CURB 65
negatives of CURB 65 score
Young people
- Hypoxia
- Multi-lobar consolidation
score of pneumonia
- 0-1 low risk - could be treated in community < 3%
- 2 moderate risk - hospital treatment usually required 9%
- 3-5 high risk of death and need for ITU
complications of pneumonia
- Sepsis
- Acute Kidney Injury
- Adult Respiratory Distress Syndrome
- Parapneumonic effusion
- Empyema
- Lung Abscess
- Disseminated infection
lung abscess
More likely with Staph aureus,
pseudomonas, anaerobes…
* Purulent sputum, haemoptysis
* Screen for TB
* CT scan +/- bronchoscopy
* Prolonged antibiotics minimal of 4 weeks
empyema
Thoracic ultrasound +/- aspirate
* Fluid parameters:
* Simple pH > 7.2
* Complicated pH < 7.2
* Empyema pus/Culture +ve
* May need drain + prolonged abx
* Surgery / intrapleural tPA + DNAse
recovery period for pneumonia
- Repeat CXR 6 weeks if >50yrs, smokers this is to check whether the infection has resolved
- Smoking cessation
recurrent pneumonia
HIV
cancer
bronchiectasis
aspiration pneumonia
bronchiectasis
signet ring appearance
causes of bronchiectasis
Idiopathic
* Childhood infection
* CF
* Ciliary dyskinesia
* Hypogammaglobulinaemia
* Allergic BronchoPulmonary Aspergillosis
(ABPA)
symptoms of bronchiectasis
Chronic productive cough
* Breathlessness
* Recurrent LRTI
* Haemoptysis
* Finger clubbing
* Crepitations (coarse)
* Wheeze
* Obstructive spirometry