Diabetic Ketoacidosis is the major cause of morbidity and mortality in children with Type 1 Diabetes mellitus.1 Inadequate dose of insulin being administered is one of the major cause for it.2 Faulty pen devices potentially can be responsible for this. We report two cases of DKA secondary to faulty pen devices. In one case piston rod of the pen was broken and insulin vial was broken within the other one (see figure). This emphasises the need for regular check of functioning of the equipments used by patients to reduce morbidity and mortality in addition to considering other causes of inadequate dose of insulin like poor concordance and injection technique.
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