Table 1.

Reasons for definitive therapy

Reason for definitive therapy	Number
Relapse	41
Poor response/unable to wean medication	29
Intolerant/complications of medical therapy	18
Patient compliance	4
Carbimazole unavailable	2
Remote location	2
Patient preference	2
Likely to require multiple contrast loads	1
Hepatitis C on interferon	2
Cardiovascular comorbidities	4