Respiratory Signs And Symptom Flashcards
What is a symptom?
What the patient experiences.
What is a sign?
Features of disease that can be observed.
What are the six common respiratory symptoms?
Breathlessness
Cough
Wheeze
Chest pain
Sputum
Haemoptysis
What are important diagnostic questions to refine respiratory history taking?
Peripheral oedema
Voice alteration
Orthopnea
Night sweats
Sneeze
Nasal obstruction
What is orthopnoea?
Shortness of breath when lying down.
What should be explored in breathlessness in patients?
There is a sensation of increased demand for breathing. It is important to establish:
Time period
Their new exercise capacity before SOB
What are sudden causes of shortness of breath within minutes.
Pulmonary oedema where fluid accumulation occurs in the lungs, associated with orthopnoea.
Pneumothorax where gas is present between the lungs and chest wall, associated with pleuritic chest pain.
Anaphylaxis which is associated with urticaria.
Foreign body inhalation with onset occurring during eating.
Why would shortness of breath occur for minutes?
Pulmonary oedema
Pneumonia due to lung infection
Acute asthma attack which is the progressive worsening of asthma symptoms.
Acute hypersensitivity pneumonitis which is inflammation in the lung tissues due to allergic reaction to the inhalation of a substance.
Why would shortness of breath occur for weeks?
Pleural effusion: buildup of fluid between the lungs and chest cavity
Heart failure
Anaemia
Lung cancer
Why would shortness of breath occur over months?
Pulmonary arterial hypertension, typically due to heart failure
Pneumoconiocosis: occupational lung disease from breathing in irritants
Chronic bronchitis
COPD: obstructed airflow due to narrowed airways
Emphysema: damage to alveoli
Interstitial lung disease: scarring of the lung tissue
What are the receptors in the airways?
Rapidly adapting stretch receptors
Slow adapting stretch receptors
Capillary C fibres
What is the pathophysiology of a cough?
Irritation of Mechanoreceptors stimulates the RAS, SAS and C fibres to transmit information down the vagus nerve to the nucleus tractus solitaris in the medulla oblaganta. The NTS also receives input from inflammatory cytokines from mast cells. The NTS sends signals down efferent fibres to induces the action of the contraction of the respiratory muscles to expel air.
What are the phases of a cough?
Inspiratory phase
Compressive phase
Expulsive phase
What are potential causes of a cough?
Lung cancer
Tuberculosis
Bronchitis
Heart failure
ACE inhibitors
Gastrocnemius-oesophageal reflux
Why do ACE inhibitors cause coughing?
ACE inhibitor drugs allow increased levels of the pro-inflammatory mediators bradykinin and substance P which stimulate the nucleus tractus solitaris to induce cough.
Which features of sputum should be assessed?
Colour
Volume
Taste
What is purulent sputum?
Darker sputum which may be off-white, green or yellow due to the presence of WBC.
What is the cause of haemoptysis?
Bronchitis
Nosebleed which entered the respiratory tract
Lung cancer
COPD
Tuberculosis
Pulmonary oedema
Blood clot from pulmonary emoblism
What does a large volume of sputum indicate?
Bronchieactasis, where the bronchi widen and thicken due to chronic inflammation from infection. Results in foul-smelling and large volumes of sputum.
Bronchorrhoea associated with lung cancer.
What does foul taste of sputum indicate?
Lung absecess
Bronchiectasis
What is the cause of pink frothy sputum?
Pulmonary oedema
What is the cause of rusty-like sputum?
Pneumonia