Also known as: HOCM
Gabriel, a young boy from the Democratic Republic of Congo, has severe hypertrophic obstructive cardiomyopathy (septum measuring 22mm vs normal 5mm) as part of multiple congenital heart defects. This is the central medical case of the episode, with the team initially deeming him inoperable before Shaun devises a complex surgical approach.
Also known as: ASD, hole in the heart
One of Gabriel's multiple congenital heart anomalies that contributes to the complexity of his case and the surgical challenge faced by the team.
Also known as: Abnormally positioned heart valve
Gabriel has an abnormal insertion of the mitral valve leaflet, which is part of his complex cardiac pathology. The surgical team must move and reattach the valve during the operation.
Also known as: Abnormal EKG
Gabriel develops worsening arrhythmia that doesn't respond to medication, initially suspected to be endocarditis but later discovered to be caused by his mother withholding medications to keep him in the hospital.
Also known as: Growth on vocal cords
Elizabeth, a podcaster, has a vocal cord nodule requiring biopsy to rule out cancer. The episode's B-plot centers on the hospital losing her tissue specimen, putting her at risk of unnecessary total laryngectomy. The nodule is ultimately found to be benign.