Respiratory System Flashcards
Cough can be divided into
Dry cough
Productive
Cough can be divided into
Dry cough
Productive
Drugs used to treat dry cough
Antitussives - inhibits cough centre in brain
Example of Antitussives
Codeine
Pholcodeine
Dextromethorphan
Noscapine
Mucokinetic drugs can be divided into
Expectorants
Mucolytics
Example of Expectorants
Increase water secretions in cough
Guafenesin
Potassium iodide
Example of Expectorants
Increase water secretions in cough
Guafenesin
Potassium iodide
Example of Mucolytics
Acetylcysteine
Ambroxol
Bromhexine
Dornase alpha
Example of Mucolytics
Acetylcysteine
Ambroxol
Bromhexine
Dornase alpha
Group of drugs that can be used for treatment of Bronchial Asthma
Bronchodilators
Leukotrienes
Mast cell Stabilzers
Monoclonal antibodies against IgE
Mechanism of Action of Bronchial Asthma
Antigen-Antibody reaction - Stimulates mast cells - degranulation of Mast cells - release of Leukotrienes - leads to Bronchoconstriction
Mechanism of Action of Bronchial Asthma
Antigen-Antibody reaction - Stimulates mast cells - degranulation of Mast cells - release of Leukotrienes - leads to Bronchoconstriction
Bronchodilators used in Asthma can be from which groups
Beta2 agonist
M3 Blockers
Phosphodiesterase inhibitors
Beta-2 agonist drugs include
Salbutamol
Terbutaline
Salmeterol
Formoterol
Short acting Beta 2 agonists (SABA)
Salbutamol
Terbutaline
SABA can be used in
Acute attack of Asthma
Long acting Beta2 agonist (LABA)
Salmeterol - slow acting
Formoterol - fast acting
LABA are suitable for
Prophylaxis of Asthma
Formoterol can be used in acute attack of Asthma
LABA are suitable for
Prophylaxis of Asthma
Formoterol can be used in acute attack of Asthma
Side effects of Beta 2 agonists
4 ‘T’
Tremors - MC
Tachycardia - seen in overdose
Tolerance - mostly seen with LABA
T wave changes - Hypokalemia
Hyperglycemia may occur
Side effects of Beta 2 agonists
4 ‘T’
Tremors - MC
Tachycardia - seen in overdose
Tolerance - mostly seen with LABA
T wave changes - Hypokalemia
Hyperglycemia may occur
Example of M3 Blockers
Ipratropium
Tiotropium
What is DOC in asthma patients taking Beta blockers
M3 Blockers
Phosphodiesterase inhibitors used in Bronchial Asthma
Theophylline - iv or oral ,not by inhalational route
Phosphodiesterase inhibitors used in Bronchial Asthma
Theophylline
Theophylline suppress inflammation by stimulating
Histone di-acetylase
Theophylline suppress inflammation by stimulating
Histone di-acetylase
Theophylline also cause bronchodilation by stimulating
Adenosine Receptors
Theophylline also cause bronchodilation by stimulating
Adenosine Receptors
Side effects of Theophylline due to PDE inhibition
GIT - Nausea, vomiting, gastric
Headache
Side effects of Theophylline due to PDE inhibition
GIT - Nausea, vomiting, gastric
Headache
Side effects of Theophylline due to Adenosine Receptors blocking
Diuresis
Seizures
Arrythmias
Side effects of Theophylline due to Adenosine Receptors blocking
Diuresis
Seizures
Arrythmias
Side effects of Theophylline due to Adenosine Receptors blocking
Diuresis
Seizures
Arrythmias
Theophylline follows which order Kinetics
Zero order
Theophylline is metabolized by
Microsomal enzymes (lot of drug interactions)
Leukotrienes synthesis mechanism
Phospholipids - Arachidonic acid with help of Phospholipase A2 enzyme – Arachidonic acid is converted to Leukotrienes with the help of Lipoxygenease - then Leukotrienes binds on Cys-LT receptors on bronchus - and cause Bronchoconstriction
Leukotrienes synthesis mechanism
Phospholipids - Arachidonic acid with help of Phospholipase A2 enzyme – Arachidonic acid is converted to Leukotrienes with the help of Lipoxygenease - then Leukotrienes binds on Cys-LT receptors on bronchus - and cause Bronchoconstriction
Drugs which inhibits Phospholipase A2
Corticosteroids
Drugs which inhibits Phospholipase A2
Corticosteroids
Drugs which inhibits Lipoxygenease enzyme
Zileuton
Drugs which inhibits Lipoxygenease enzyme
Zileuton
Drugs which inhibits Lipoxygenease enzyme
Zileuton
Drugs which blocks Cys-LT receptors on Bronchus
Zafirlukast
Montelukast
Drugs which blocks Cys-LT receptors on Bronchus
Zafirlukast
Montelukast
Corticosteroids are mainly used to
Prevent asthma (DOC) - Antiinflammatory action
Corticosteroids are mainly used to
Prevent asthma (DOC) - Antiinflammatory action
Inhalational corticosteroids includes
Beclomethasone
Budesonide
Fluticasone
Flunisolide
Mometasone
Ciclesonide
Inhalational corticosteroids includes
Beclomethasone
Budesonide
Fluticasone
Flunisolide
Mometasone
Ciclesonide
In Corticosteroids there is risk of
Oropharyngeal Candidiasis
Which Inhalation corticosteroids have negligible risk of Oropharyngeal Candidiasis
Ciclesonide - Prodrug and Soft steroid
Which Inhalation corticosteroids have negligible risk of Oropharyngeal Candidiasis
Ciclesonide - Prodrug and Soft steroid
Mast cell Stabilzers used in Asthma
Chromoglycate
Nedocromil
Ketotifen
Mast cell Stabilzers can’t be used in
Exercise induced asthma
Mast cell Stabilzers can’t be used in
Exercise induced asthma
Monoclonal antibody against IgE
Omalizumab s/c
Not used in acute attack
Monoclonal antibody against IgE
Omalizumab s/c
Not used in acute attack
GINA Full form
Global initiative for treatment of Asthma
GINA Full form
Global initiative for treatment of Asthma
According to GINA Guidelines 2021 preferred reliever is
Inhaled corticosteroids + LABA(Formoterol)
According to GINA Guidelines 2021 preferred reliever is
Inhaled corticosteroids + LABA(Formoterol)
Step 1 approach used
When attacks are less than 2 times a month
Low dose ICS + Formoterol when needed
Or SABA + ICS
Step 1 approach used
When attacks are less than 2 times a month
Low dose ICS + Formoterol when needed
Or SABA + ICS
Step 2 approach used when
Attacks are more than 2 times a month but less than 4-5 times a week
Low dose ICS + Formoterol when needed
Step 2 approach used when
Attacks are more than 2 times a month but less than 4-5 times a week
Low dose ICS + Formoterol when needed
Step 4 approach used when
Attacks are more than 4-5 times a week with low lung function
Medium dose maintenance ICS + LABA
Step 4 approach used when
Attacks are more than 4-5 times a week with low lung function
Medium dose maintenance ICS + LABA
Step 5 approach is used when
Uncontrolled - Symptoms everyday and night
High dose maintenance+ Formoterol
Oral steroids maybe needed
Or
LAMA + Biological drugs
Step 5 approach is used when
Uncontrolled - Symptoms everyday and night
High dose maintenance+ Formoterol
Oral steroids maybe needed
Or
LAMA + Biological drugs