This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pediatrics
[{'content': 'A most common mode of treatment of a 1-year-old child with asthma is – \nSelect and explain. \nA. Inhaled short acting beta 2 agonist, B. Oral short acting theophylline, C. Oral ketotifen, D. Leukotriene agonist', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Treatment of asthma \nTreatment of asthma can be divided into -\nA) Treatment of chronic asthma\nB)\xa0Treatment of acute exacerbation -\n\nTreatment of mild, moderate or severe exacerbation\nTreatment of life-threatening exacerbation (status asthmaticus)\n\nTreatment of chronic asthma\n\nTreatment of chronic asthma is given to control asthma and to prevent acute exacerbation.\nSeverity of asthma is classified on the basis of -\n\n\nThe frequency of daytime symptoms \xa0 \xa0\xa0\nThe frequency of nighttime symptoms\xa0\nThe degree of airflow obstruction (FEV1)\nPeak expiratory flow (PEF) variability\n\n\nFor children less than 5 years of age, severity is classified on the basis of (1) and (2) only because young children cannot perform the manoeuvre required for lung function measurement ((3) & (4)).\n\nI)\xa0Mild intermittent \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0\n\nSymptoms for ≤ 2 days/week \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0\xa0\nSymptoms for 5 ≤ 2 night/month \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0\nFEV1 80% \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0\xa0\nPEF variability < 20%\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\n\n2) Mild persistent\xa0\xa0\xa0\xa0\n\nSymptoms > 2days / week\xa0\xa0\nPEF variability 20-30%\xa0\xa0\xa0\xa0\xa0\nSymptoms >2 night / months\xa0\xa0\xa0\xa0\nFEV1\xa080%\xa0 \xa0 \xa0 \xa0\xa0\n\n3)\xa0Moderate persistent \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0\n\nDay symptoms daily \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0\nSymptoms > I night/week \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0\nFEV1 > 60% - < 80% \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0\xa0\nPEF variability >30% \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0\nA stepwise pharmacological therapy is indicated.\n\n\xa0 4) Severe persistent\n\nContinuous day symptoms\nFrequent night symptoms\nFEVi\xa060%\nPEF variability >30%', 'role': 'assistant'}]