The supine AP resus chest x-ray shows extensive bilateral alveolar opacities, which is indicative of pulmonary oedema. There is an endotracheal tube in place and there are external artifacts (i.e. ECG leads).

Non-cardiogenic pulmonary oedema in this case is likely due to negative pressure generated during recurrent seizure activity & aspiration.
A useful mnemonic to remember causes of non-cardiogenic pulmonary oedema:
NOT CARDIAC:
- Near drowning.
- Oxygen therapy.
- Transfusion or trauma.
- Central nervous disorders.
- ARDS, aspiration.
- Renal disorder or resuscitaion.
- Drugs.
- Inhaled toxins.
- Allergic alveolitis.
- Contrast reaction.
Reference: https://www.med-ed.virginia.edu/courses/rad/chest/f15pulCardiac.html