<prompt> Which one of the following values is not a feature of Acute Severe Asthma?Heart rate more than 110minPEF of 60 to 70 of expectedPulsus paradoxusPaO2 of less than 8 kPa  <response>: b. PEF of 60 to 70 of expectedRef: Nelsons 20e p 1095-1115, Ghai 8e p 382-392Note: 1kPa7.5mmHg; So 8kPa60mmHgGrading of severity of Asthma exacerbationCharacteristicsMildModerateSevereHeart rate100100-120120PEF Peak expiratory flow70 or response 4040-6940Pulsus paradoxusAbsentMay be presentOften presentPaO2 Normal60mmHg 8KPa60mmHg 8KPa 