Respiratory Disease Flashcards
Give examples of respirate disease
- Asthma
- Chronic Obstructive pulmonary Disease
- Upper and lower respiratory infection
- Lung and laryngeal cancers
- Pulmonary embolus
Give soem differences in asthma and COPD
- COPD more common in smokers
- Asthma starts in childhood or early adulthood whereas COPD later in life
- Chronic productive cough common in COPD
- Breathlessnes is persistent and progressive in COPD but variable in asthma
- Symptoms are worse at night in asthmatic patients
- Asthma symptoms more variable
What is asthma
A chronic inflammatory deists where the airway is obstructed and bronchial is hyper responsive to stimuli
How do we diagnose asthma
Combination of signs, symptoms and trigger
Also evaluation PEF and possibly spirometry
Give some triggers for asthma
- Exercise
- Viral infection
- NSAIDs
- Beta blockers
- Dust/pollen/ animals
- Coloiphony
- Latex
Give some symptoms fo asthma
- Wheeze
- Tight chest
- Cough
- Shortness of breath
Give some signs of asthma
Wheeze that is
- bilateral
- Polyphonic
- Diffuse
- Expiratory
What is a sign
Something a clinician can objectively see hear or measure
What is a symptom
Something the patient describes or complains of
Is asthma lethal
3 people die of acute asthma every day
Is the severity of asthma in a patient linear
No it changes with time so management is a stepwise approach
What do we aim to control in an asthmatic patient
- Minimal symptoms
- Minimal need for beta agonist medicine
- No exacerbations
- No limitation of physical activity
- Normal lung function
What is asthma management split into
- Pharmacological management
2. Non pharmacological management
What can pharmaceutical treatment of asthma be split into
- Relievers
2. Preventers
List some relieving medication we can give to treat asthma
- Beta 2 agonists
- Antimuscarinic drugs
- Theophyline tablets
Give examples of soem beta 2 agonist
- Salbutamol
2. Salmeterol
Give examples of some antimuscarinic drugs
- Ipratropium
2. Tiotropium
List some preventer medication we can give to treat asthma
- Inhaled corticosteroids
- Systemic corticosteroids
- Leukotriene receptor antagonists
- Theophylline tablets
- Cromoglycates
Give examples of some inhaled corticosteroids
Beclometasone
Fluticasone
Give examples of some systemic corticosteroids
Prednisolone tablets
What do beta 2 agonists act on
They act on beta-adrenoreceptor
What do beta 2 agonist drugs do
They aim to relax the smooth muscle in the bronchi
They also result in a degree of vasodilation
What happens when the beta 2 agonist drug binds to beta-adrenoreceptor
- Up regulates cyclic adenosine monophosphate (cAMP)
- This increases calcium levels intra cellularly
- CAMP will also activate protein kinase A
- Protein kinase A and calcium will inactivate myosin kinase and myosin phosphatase
- This will relax smooth muscle
What happens when the smooth muscle of the bronchi is relaxed
Relieves the construction of the lumen and increases the airflow through the lumen
What are the side effects of beta 2 agonist
- tremor
- tamycardia
- agitation
What type of drugs are inhaled corticosteroids
They are anti inflammatory
What colour inhaler is the beta 2 agonist
It is a blue inhaler
Which colour inhaler are the inhaled steroids
Brown inhaler
Which colour inhaler are the Antimuscarinic drugs
Green inhaler
What do Antimuscarinic drugs do
They act to dilate the bronchus
How do Antimuscarinic drugs work
- reduces the influence of acetyl Choline on bronchial smooth muscle
- Blocks muscular receptors
- This promotes degradation on cyclic GMP
- Affects calcium levels
- Decreases contractility of the smooth muscle
- Inhibits broncho restriction and reduces mucous secretion
What does Theophylline do
Relaxes bronchial smooth muscle
What type of drug is Theophylline
It is a phosphodiesterase inhibitor that raises CYCLIC AMP
Talk through how Theophylline works
- inhibits that raises CYCLIC AMP
- Activates protein kinase A
- Inhibits leukatrine synthesis
- This reduces inflammation
what is leukatrine
Inflammatory mediatory that brings on prostaglandins