The condition of patients already suffering from respiratory diseases like asthma and Chronic Obstructive Pulmonary Disease (COPD) worsens during this time of the year as pollution levels are high because of fog and smog, said Dr J C Suri, professor and head of pulmonary medicine at Safdarjang Hospital.
"There is an increase in the number of patients coming to us with complaints of respiratory ailments such as cough, cold, sore throat and chest congestion.
According to an expert from Centre for Science and Environment (CSE) there has been a "seven-fold increase" in Delhi's air pollution level since October. Even real-time exposure readings of nearly all monitoring stations put PM 2.5 and PM 10 figures above the 'severe' threshold.
According to a senior doctor at AIIMS, the tiny PM 2.5 particles travel deep into the lungs and get trapped there causing thickening and swelling of the windpipe and in turn aggravate lung function and cardiac conditions.
"The windpipes in children are small in size so any thickening in the lining of the airways causes much more obstruction to air flow than in adults. We have seen a significant increase in the number of children coming with breathing difficulty and being put on nebulizer treatment.
"Also there has been increased hospital admissions of elderly for heart and vascular disease, chronic obstructive pulmonary disease and respiratory infection," he said.
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