Asthma

What is the diurnal variability of asthma symptoms?

Symptoms worse at night or early morning

According to the British Thoracic Society/Scottish Intercollegiate Guidelines Network (BTS/SIGN) asthma guidelines, in acute severe asthma what is the peak flow (PEF)?

33 to 50% best or predicted

According to the British Thoracic Society/Scottish Intercollegiate Guidelines Network (BTS/SIGN) asthma guidelines, in acute severe asthma what is the respiratory rate?

25 breaths per minute or more

According to the British Thoracic Society/Scottish Intercollegiate Guidelines Network (BTS/SIGN) asthma guidelines, in acute severe asthma what is the heart rate?

110 beats per minute or more

According to the British Thoracic Society/Scottish Intercollegiate Guidelines Network (BTS/SIGN) asthma guidelines, in life-threatening asthma what is the peak flow (PEF)?

Less than 33% best or predicted

According to the British Thoracic Society/Scottish Intercollegiate Guidelines Network (BTS/SIGN) asthma guidelines, in life-threatening asthma what is the oxygen saturation level?

Less than 92%

According to the British Thoracic Society/Scottish Intercollegiate Guidelines Network (BTS/SIGN) asthma guidelines, in life-threatening asthma what is the arterial partial pressure of oxygen (PaO2)?

Less than 8 kPa

According to the British Thoracic Society/Scottish Intercollegiate Guidelines Network (BTS/SIGN) asthma guidelines, in life-threatening asthma what is the arterial partial pressure of carbon dioxide (PaCO2)?

‘Normal’ range i.e., 4.6 to 6 kPa