Respiratory Flashcards
Define COPD
COPD is a chronic inflammatory disease resulting from exposure to noxious particles that causes obstruction of airflow, characterised by emphysema and chronic bronchitis
Pathophysiology of COPD
Long term exposure to irritants or noxious particles leads to progressive destruction of alveoli and their elastic fibres, and capillary beds, which reduces the surface area available for gas exchange and expiratory volume (emphysema), a chronic inflammatory response in the bronchial wall causing obstructive oedema, and the gradual increase in number and size of mucous secreting cells in the bronchial walls, causing tenacious mucous production (chronic bronchitis)
Identify causes and risk factors of COPD
Causes:
tobacco smoke
dust, fumes, chemicals
pollution
Risk factors:
Childhood asthma
early life events eg. prematurity, FGR
Alpha I angiotripsin disorder
Describe the clinical manifestation of COPD
Clinical manifestation is INSIDIOUS = slow progressing and no symptoms immediately present
S+S:
wheezing
coughing
tenacious mucous production
SOB/dyspnoea
low O2 sats
reduced exercise tolerance
lower resp infection
fatigue
Diagnosed by an FEV <70%
What is the role of the nurse/goal of care when caring for a patient with COPD
Early intervention and management to best slow the progression of symptoms and reduce the risk of exacerbation
COPD damage is irreversible
What medications are involved in pharmacologic COPD management
Short acting beta antagonists
Long acting beta antagonists
Inhaled corticosteroids
combination medications
SABA
Indication: short acting relief of acute symptoms of breathlessness
MoA:
Eg.
Side effects:
Act on B2 receptors in bronchial smooth muscle to relax muscles in lungs and widened airways
Beta 2 Agonists. A= Asthma
Can be short acting or long acting
Short Acting Beta Agonists (SABA): salbutamol, tirbutaline
Long Acting Beta Agonists (LABA): salmeterol, formeterol
SABA onset of action: 2-5 minutes. Duration of action: 4-6 hours
LABA duration of action: 12-24
LABA
Indication:
MoA: relaxes smooth muscle
Eg.
Side effects:
Inhaled corticosteroids
Enters the cell
Enters nucleus of cell
Increases or decreases synthesis of specific proteins including enzymes involved in regulating cell inflammation
Prevent epithelial cells of the lining of the bronchi from being hypersensitive
Combination medication
List 5 non-pharmacological nursing interventions for COPD and their rationale
Categorise mild, moderate and severe COPD and the difference in their management
Identify the indication and role of the nurse in a COPD patient with a tracheostomy
Identify the indication and goals of NIV treatment
Describe the role of the nurse in administering NIV