Which of the following correlates well with the "severe" type of bronchial asthma exacerbation: March 2011: (A) Bradycardia with HR less than 100/ min, (B) Pulsus paradoxus less than 10/min, (C) Tachypnea with RR less than 30/min, (D) Usual use of accessory muscles of respiration
Answer is D. Ans. D: Usual use of accessory muscles of respiration Bronchial asthma: Hyper-responsiveness of airways with bronchoconstriction Increased leukotrienes Histology: Creola bodies, - Charcot Layden crystals, - Curschmann's spiral FEV1 is the parameter to improve maximum on bronchodilator therapy