Adverse drug reactions are appreciably harmful or unpleasant reactions resulting from an intervention related to the use of medical products, which predicts hazard from future administration and warrants prevention or specific treatment, or alteration of the dosage regimen, or withdrawal of the product. Given medical case reports extracted from MEDLINE, the task is to classify whether the case report mentions the presence of any adverse drug reaction. Classify your answers into non-adverse drug event and adverse drug event.

On the 3rd day, an inferior vena cava (IVC) filter was placed with a heparin flush, after which massive IVC thrombosis developed.
adverse drug event

It has been reported that fluoroquinolone antimicrobials prolong the corrected QT interval but rarely cause torsade de pointes.
adverse drug event

The tendency to develop AV block in a patient who is euthyroid was reduced by bypass tract conduction.

non-adverse drug event