Participants in the intervention group will have access to the 3 teaching videos, ~3:30-5:00 minutes in duration each, beginning several weeks prior to the preadmission clinic (as soon as written consent is obtained).

Participants in the usual care will not be offered an intervention and will not be made aware of the existence of the teaching videos.

The intervention will consist of three brief (~5 minute) professionally-developed whiteboard videos, available online. The videos will feature lay language at a grade 7 level or below and will be engaging. Topics are based on key findings of the Family Resilience Study, namely:

1. Stress reactions in children and parents post Fontan. This video will be supplemented with existing resources on the topic.
2. Anticoagulation
3. Prolonged pleural drainage

The primary endpoint is the parent's STAI-State score within 1 week preceding surgery.

Parent STAI-State score 1- week and 1-month postoperatively

Semi-structured interviews will be conducted by a trained qualitative interviewer who works with a team member and has extensive experience with parents.