TABLE 1.

Outline of the intervention (also see Supplement 1)

Booklet	Contents	Exercises
1	Psychoeducation on CBT, anxiety and anxiety in PH	Develop a mini-CBT formulation and practice slow breathing exercises
2	Psychoeducation on maintenance factors for anxiety relevant to PH	Develop a broader CBT formulation focusing on short and long-term difficulties, and practice mindfulness exercises
3	Psychoeducation on cognitive biases and normalisation of difficulties though case vignettes	Practice thought monitoring and thought challenging exercises
4	Psychoeducation on graded exposure taking into consideration impact of fatigue. Information on other factors affecting anxiety and relapse prevention	Develop a anxiety hierarchy, create a plan to manage setbacks and progressive muscle relaxation exercise

CBT: cognitive behavioural therapy; PH: pulmonary hypertension.