17 year old Female with black-outs and SOBOE

Presents to ED after a seizure like episode, when she regained consciousness it took around 30min to 'catch her breath'. She had been diagnosed with asthma from an early age but even with Rx was not able to participate in physical activities.
O/E she had no heart murmur and only a slight wheeze, she felt fine at the time. She is not on any medications apart from relieving and preventative asthma inhalers.

FHx was spotty due to poor communication with foreign relatives.

This ECG was obtained.
What abnormalities are seen here?
What could these indicate?
What investigations should be conducted?
What Rx should be considered?