Prevention of Delirium After Bone Marrow Transplantation

This is a pilot, double blind randomized study conducted in patients scheduled to undergo
bone marrow transplant at the Massachusetts General Hospital. The goal of this study is to
look at the usefulness of bright light therapy in the prevention of delirium in a population
at high risk for developing this condition.

Delirium can develop in up to half of the people that undergo bone marrow transplant.
Symptoms include changes in level of alertness, confusion, and temporary problems with
memory and attention. In severe cases, it can be accompanied by agitation, paranoia(overly
suspicious), and hallucinations(seeing or hearing things that are not really there).

Bright light uses no medication and is often used to treat seasonal affective depression and
multiple sleep disorders. The light boxes are portable and are placed in front of
individuals for about 30 minutes every day.

Inclusion Criteria:

- 18 or older

- Male or female

- Patients scheduled to undergo HSCT

- English speaking

Exclusion Criteria:

- Previous history of bipolar affective disorder

- On-going delirium

- History of substance abuse/dependence within 6 months prior to HSCT

- History of invasive melanoma. Patients with a history of basal cell carcinoma,
melanoma in situ, or squamous cell carcinoma are permitted to enroll if the lesion(s)
have been excised with negative margins

- History of medical/dermatological conditions that make skin especially sensitive to
light,such as systemic lupus erythematosus (SLE) and/or porphyria

- Eye condition that makes eyes vulnerable to light damage

- Concomitant use of medications that increase sensitivity to sunlight, such as the
herbal supplement St. John's Wort

- Established primary insomnia