Pulmonary Disease & Dermatology Flashcards
Differential diagnosis of cough based on its character?
DIFFERENTIAL DIAGNOSIS OF COUGH BASED ON ITS DURATION:
- 6 Acute?
- 9 Chronic?
Give 2 differentials for a cough of recent origin, particularly if associated with fever and other symptoms of respiratory tract infection?
- acute bronchitis
- pneumonia
What are the features of a cough in asthma?
A chronic cough (of more than 8 weeks duration) associated with wheezing may be due to asthma; sometimes asthma can present with just cough alone.
What is the single most common cause of chronic cough?
A cough associated with a postnasal drip or sinus congestion or headaches may be due to the upper airway cough syndrome, which is the single most common cause of chronic cough.
Give 2 differentials for a dry cough?
A dry cough may be a feature of:
1. Late interstitial lung disease
2. Associated with the use of the angiotensin-converting enzyme (ACE) inhibitors—drugs used in the treatment of hypertension and cardiac failure.
2 Differentials for a cough that wakes a person at night?
Cough that wakes a patient from sleep may be a symptom of cardiac failure or of the reflux of acid from the oesophagus into the upper airway that can occur when a person lies down.
What would a chronic cough that is productive of large volumes of sputum suggest?
A chronic cough that is productive of large volumes of purulent sputum may be due to bronchiectasis
Differentials for a ‘barking’ cough in children and adults?
In children, a cough associated with inflammation of the epiglottis may have a muffled quality and cough related to viral croup is often described as ‘barking’. In adults a barking cough may indicate a condition of flaccid trachea and large bronchi, known as tracheomalacia.
Differentials for haemoptysis?
- Respiratory? (10)
- Cardiovascular? (3)
9 Common Differentials for a chronic cough?
10 Uncommon Differentials for a chronic cough?
What is Upper airway cough syndrome?
10 lifethreatening causes of cough?
What is Bronchiolitis?
Bronchiolitis:
- Epidemiology?
- Aetiology?
- 6 Risk factors for severe bronchiolitis?
Bronchiolitis:
- Clinical Features?
- Diagnostics - General Principles?
- Diagnostics - Lab Studies?
- Diagnostics - CXR?
- 5 Symptoms of moderate to severe acute bronchiolitis requiring admission to hospital?
- When should you consider early hospital admission in infants with mild symptoms?
Management of Acute Bronchiolitis - What is and isn’t recommended?
Which medication can be used for Bronchiolitis prevention/prophylaxis?
- Indications?
What is Croup?
- Peak incidence?
- Aetiology?
Peak incidence: 6 months to 3 years
Most common pathogen:
1. parainfluenza viruses (75% of cases)
2. Other pathogens: respiratory syncytial virus (RSV), adenovirus, influenza virus, SARS-CoV-2 (COVID-19)
Pathophysiology of Croup?
Clinical Features of Croup?
Diagnostics for Croup
- General principles?
- Imaging?
- Lab studies?
Do not delay treatment of stridor to perform diagnostic studies.
The steeple sign is not specific to croup; it may also be present with bacterial tracheitis, epiglottis, and noninfectious etiologies such as thermal injuries and neoplasms.
What is the approach to the management of a patient with croup?
- Which severity rating score should be calculated?
What is the Westley Croup Severity Score? Interpretation of results?
Immediate stabilisation measures in Croup?
Non-drug management of Croup?
Treatment for Mild-Moderate Croup?
- Mild to moderate croup (see Severity assessment of croup) can be treated in the community with a single dose of corticosteroid and nondrug management. The use of a single dose of corticosteroids in children with mild to moderate croup reduces hospital admission rates and prevents repeat presentations.
- Observe for at least 30 minutes after the dose of corticosteroid. If accessory muscle use, stridor at rest, or distress have not improved, treat as for severe croup.
- If the child settles initially after treatment for mild to moderate croup, they can return home; advise parents or carers that if the child develops stridor at rest later the same day, they should go to hospital. Management as for severe croup is required.
- Give paracetamol or ibuprofen if the child has pain and is irritable.
- Cough suppressants such as codeine have no proven effect on the course or severity of croup, and can cause respiratory depression and increase sedation.
Treatment for Moderate/Severe Croup?
- For a child with severe croup (see Severity assessment of croup), arrange immediate transfer to hospital (if not already in hospital) because severe croup can rapidly progress to life-threatening croup.
- Hydrocortisone should not be used because evidence of efficacy is lacking and it has a short duration of action.
- Nondrug strategies should be used in the treatment of severe croup.
- Observe the child for at least 4 hours after giving initial treatment of severe croup.
- If there is no stridor at rest, the child may be safe for discharge.
- Follow up all children who have had severe croup within 24 hours of discharge.
- If there is no response (eg ongoing stridor at rest) or deterioration occurs, escalate to senior or intensive care team involvement, and arrange hospital admission.
- Differential diagnoses include bacterial tracheitis and conditions associated with airway obstruction or deep neck space infection (see here …); antibiotics may be indicated.
What is Nonasthmatic eosinophilic bronchitis (NAEB)?
Nonasthmatic eosinophilic bronchitis (NAEB) = A respiratory condition characterized by eosinophilic inflammation of the bronchi. Symptoms include cough, wheezing, and dyspnea, and sputum eosinophilia is a characteristic finding. Usually has a good response to corticosteroids. Unlike in asthma and COPD, there is no obstruction or airway hyperresponsiveness in nonasthmatic eosinophilic bronchitis.
What is Pertussis?
Pertussis:
- Epidemiology
- Aetiology?
Pertussis:
- Pathophysiology?
What are the 3 Stages of Pertussis?
- The typical whooping cough manifests mainly in children aged 6 months to 5 years. The individual stages of the disease may be indistinguishable in young infants and adults.
- Catarrhal stage manifests with Coryza, while the Paroxysmal stage manifests with Posttussive vomiting and whooPing cough
How is Pertussis diagnosed?
Treatment for Pertussis
- General approach?
- Medical therapy?
- Which antibiotics in infants <1 month?
Discuss the Immunization available for Pertussis?
- Schedule - Children?
- Adults?
Discuss the post-exposure prophylaxis for pertussis?
- Indication?
- Regimen?
- Isolation?
- Notifiable?
What is Bronchiectasis?
Bronchiectasis is an irreversible and abnormal dilation in the bronchial tree caused by cycles of bronchial inflammation leading to mucous plugging and progressive airway destruction. Bronchiectasis is classified according to etiology as either cystic fibrosis (CF) bronchiectasis or non-CF bronchiectasis (e.g., secondary to severe or protracted pneumonia, immunodeficiency, or COPD).
What is the definition of Bronchiectasis?
What is the definition of Acute exacerbation of Bronchiectasis?
Bronchiectasis: an irreversible and abnormal dilation of the bronchial tree that produces chronic respiratory symptoms (e.g., chronic productive cough)
Acute exacerbation of bronchiectasis: a deterioration in the symptoms of bronchiectasis that requires a change in the regular treatment (e.g., adding antibiotics, increasing airway clearance techniques)
Aetiology of Bronchiectasis
- 4 Common causes?
- 8 Less common causes?
- 3 Rare causes?
Bronchiectasis requires the combination of two important processes taking place in the bronchi: either local infection or inflammation along with either inadequate clearance of secretions, airway obstruction, or impaired host defenses. These processes result in the permanent dilation of airways.
Clinical Features of Bronchiectasis?
Investigations for and diagnosis of Bronchiectasis?
What are the management goals in bronchiectasis?
What are 5 Key components of bronchiectasis management in adults?
Management goals are to stop or delay disease progression, reduce exacerbation frequency (goal ≤ 2 per year), achieve symptom control, and improve the patient’s quality of life.
What is COPD?
- Chronic Bronchitis?
- Emphysema?
Chronic obstructive pulmonary disease (COPD) is characterised by persistent airflow limitation resulting from a combination of small airways disease and alveolar destruction (emphysema). It is caused by an abnormal inflammatory response in the lungs to noxious particles or gases, most commonly tobacco smoke. COPD is a progressive disease; however, smoking cessation can slow progression, and treatment can improve the patient’s quality of life.
Epidemiology of COPD?
- Sex?
- Prevalence?
Aetiology of COPD?
- 2 Exogenous factors?
- 5 Endogenous factors?
Sex: 3:2 male/female ratio
Prevalence: 6%
What are the 2 Global Initiative for Chronic Obstructive Lung Disease (GOLD) classifications?
What is Emyphysema?
4 Clinical Subtypes?
Emphysema is defined by irreversible enlargement of the airspaces distal to the terminal bronchiole, accompanied by destruction of their walls. Subtle but functionally important small airway fibrosis (distinct from chronic bronchitis) is also present and is a significant contributor to airflow obstruction. Emphysema is classified according to its anatomic distribution within the lobule. Recall that the lobule is a cluster of acini, the terminal respiratory units. Based on the segments of the respiratory units that are involved, emphysema is subdivided into four major types: (1) centriacinar, (2) panacinar, (3) paraseptal, and (4) irregular. Of these, only the first two cause clinically significant airflow obstruction
What are the 2 main types of Emphysema? How do they compare?
What is the Pathophysiology of COPD?
- Chronic inflammation?
- Tissue destruction?
Clinical features of COPD
- Presenting findings?
- Features of advanced COPD?
How is COPD diagnosed?
What test needs to be performed to rule out asthma?
Postbronchodilator test
Used to assess the reversibility of bronchoconstriction:
- Change in FEV1 < 12%: irreversible bronchoconstriction
- Change in FEV1 > 12%: reversible bronchoconstriction
The degree of reversibility alone cannot reliably distinguish between the diagnosis of asthma vs. COPD.
Other than pulmonary function tests, which routine studies would you perform to support a diagnosis of COPD?
List 4 Supportive measures for the management of COPD patients?
What is the stepwise drug management of stable COPD?
Multidisciplinary care for COPD?
TGA Guidelines - Short-acting bronchodilator therapy for COPD?
TGA Guidelines - Long-acting bronchodilator (LABA or LAMA) monotherapy for COPD?
TGA Guidelines - Long-acting bronchodilator (LABA plus LAMA) dual therapy for COPD?
What is Hypercapnia?
List 5 causes?
Hypercapnia = An elevation of CO₂ > 45 mm Hg in arterial blood (normal pCO₂: 33–45 mm Hg).
- Can be acute (e.g., respiratory muscle paralysis, asthma, pneumonia) or chronic (e.g., COPD).
- Can be caused due to increased ventilation-perfusion mismatch (e.g., pneumonia, pulmonary embolism), decreased respiratory drive (e.g., sedative overdose, brainstem stroke), or decreased respiratory nerve/muscle function (e.g., poliomyelitis, Guillain-Barré syndrome).
8 Clinical Features of hypercapnia?
5 Clinical features of hypoxemia?