To acquire low radiation dose and good quality cardiac CT images requires scanning at low heart rates which is usually done with beta-blockers. However, in some patients beta-blockers have little effect. This is thought to be due to a different mechanism of action which continues to maintain the heart rate despite administration of beta-blockers. This study aims to look at the effect of music or relaxation tracks to reduce patient heart rate as anxiety is thought to play a role in maintaining high heart rates. This study will randomise patients into a normal standard of care group compared to a normal standard of care group with music/ relaxation track and compare heart rate, radiation dose, image quality, amount of beta-blocker used and patient experience via a State-Trait Anxiety Inventory (STAI) questionnaire.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Masking
SINGLE
Enrollment
197
University Health Network, Toronto General Hospital
Toronto, Ontario, Canada
Change in Heart Rate
Unit of measure - beats per minute
Time frame: Same day as CT scan
Radiation Dose
Unit of measure - millisieverts
Time frame: Same day as CT scan
Image Quality
Measurement tool - Likert Scale. Review of images by two highly experienced cardiac radiologists
Time frame: Same day as CT scan
IV metoprolol dose
Unit of measurement - milligrams
Time frame: Same day as CT scan
Patient Satisfaction
Measurement tool - Modified state-trait anxiety inventory (STAI) questionnaire
Time frame: Same day as CT scan
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