Cough and breathlessness Flashcards
Signs and symptoms
Symptoms:
Felt by the patient, usually subjective.
Example: pain, fatigue, nausea.
Signs:
Things observed usually by the clinician.
Includes:
Haemoptysis, hypertension, hypoxaemia etc.
Cough reflex pathway
Irritation of the airway/alveoli—-> Inspiration —-> Compression of thorax —-> Expulsion of air from thorax caused by contraction of expiratory musculature.
Cough initiated from medulla control- prevents aspiration
Stimulated by sensory nerve (irritant receptors) in: Epithelium of pharynx Larynx Trachea Bronchi
Purpose of cough reflex
Prevents aspiration- drawing in of breath.
Supplement clearance mechanism for when mucociliary clearance is no functioning properly.
Acute cough
Cough that only lasts for up to 2 weeks.
Persistent/ prolonged/ sub-acute cough
Cough lasting 2-8 weeks long
Chronic cough
Cough lasting up to 8 weeks.
Common causes:
Rhinitis
Asthma
Reflux oesophagitis
Common causes of cough ( 6)
Common cold
Lower respiratory tract infection- pneumonia
COPD
Rhinitis
Oesophageal reflux
Smoking
Uncommon causes of cough (7)
Passive smoking
Lung tumour
Heart failure
ACE inhibitors
Occupational exposure
TB
Psychological
7 types of cough
Dry
Smoker’s
Bovine
Productive
Whooping
Croup
Chronic
Dry cough
Occurs when there is irritation in the throat and airways.
Nothing is expelled from the cough
Causes: Irritants Allergies Common cold Asthma
Smoker’s cough
Chronic cough- lasting for 8 or more weeks.
Usually in the morning
Produces little sputum.
Productive cough
Cough that expels material.
If sputum is infected= purulent.
Not normally suppressed by drugs
Antitussives
Drugs that stop coughing.
Describing sputum
Colour
Quantity and quality
Smell
Haemoptysis- from lungs.
(Haematemesis, from GI)
Haemoptysis
Sputum that contains blood.
Bright red blood indicates:
PE
Malignancy
TB
Rusty colour:
Acute pneumonia
Pink and frothy:
Pulmonary oedema + LVF