Asthma is a common obstructive lung disease with a hallmark of airway inflammation and hyper-reactivity in response to a variety of stimuli. The morbidity and mortality in asthma is directly related to reversible airway obstruction and bronchospasm in response to specific triggers. The goal of the anaesthetist is to avoid eliciting triggering stimuli that can incite bronchospasm. https://www.findingthestory.com/product-category/carbon-steel-smaw/