Resp Flashcards
COPD initial treatment
General management
>smoking cessation advice: including offering nicotine replacement therapy, varenicline or bupropion
annual influenza vaccination
one-off pneumococcal vaccination
pulmonary rehabilitation to all people who view themselves as functionally disabled by COPD (usually Medical Research Council [MRC] grade 3 and above)
Bronchodilator therapy
a short-acting beta2-agonist (SABA) or short-acting muscarinic antagonist (SAMA) is first-line treatment
for patients who remain breathless or have exacerbations despite using short-acting bronchodilators the next step is determined by whether the patient has ‘asthmatic features/features suggesting steroid responsiveness’
COPD Asthma Like Criteria
any previous, secure diagnosis of asthma or of atopy
a higher blood eosinophil count - note that NICE recommend a full blood count for all patients as part of the work-up
substantial variation in FEV1 over time (at least 400 ml)
substantial diurnal variation in peak expiratory flow (at least 20%)
COPD after initial treatment
No asthmatic features/features suggesting steroid responsiveness
add a long-acting beta2-agonist (LABA) + long-acting muscarinic antagonist (LAMA)
Asthmatic features/features suggesting steroid responsiveness
LABA + inhaled corticosteroid (ICS)
if patients remain breathless or have exacerbations offer triple therapy i.e. LAMA + LABA + ICS
NICE recommend the use of combined inhalers where possible
Oral theophylline
NICE only recommends theophylline after trials of short and long-acting bronchodilators or to people who cannot used inhaled therapy
the dose should be reduced if macrolide or fluoroquinolone antibiotics are co-prescribed
Cor pulmonale
features include peripheral oedema, raised jugular venous pressure, systolic parasternal heave, loud P2
use a loop diuretic for oedema, consider long-term oxygen therapy
ACE-inhibitors, calcium channel blockers and alpha blockers are not recommended by NICE
Obstructive lung disease
FEV1 - significantly reduced
FVC - reduced or normal
FEV1% (FEV1/FVC) - reduced
Asthma
COPD
Bronchiectasis
Bronchiolitis obliterans
Restrictive lung disease
FEV1 - reduced
FVC - significantly reduced
FEV1% (FEV1/FVC) - normal or increased
Pulmonary fibrosis Asbestosis Sarcoidosis Acute respiratory distress syndrome Infant respiratory distress syndrome Kyphoscoliosis e.g. ankylosing spondylitis Neuromuscular disorders
Acute asthma attack categorisation
Moderate PEFR 50-75% best or predicted Speech normal RR < 25 / min Pulse < 110 bpm
Severe PEFR 33 - 50% best or predicted Can't complete sentences RR > 25/min Pulse > 110 bpm
Life threatening PEFR < 33% best or predicted Oxygen sats < 92% Silent chest, cyanosis or feeble respiratory effort Bradycardia, dysrhythmia or hypotension Exhaustion, confusion or coma
COPD LTOT Criteria
LTOT should be offered to patients with a pO2 of < 7.3 kPa or to those with a pO2 of 7.3 - 8 kPa and one of the following: secondary polycythaemia nocturnal hypoxaemia peripheral oedema pulmonary hypertension