This study was planned as a randomized controlled trial to determine the effect of mandala painting on the anxiety of coronary heart patients.

Patients in the control group will receive routine care.Patiens in the experimental group will receive routine care and mandala painting. Experimental group will paint mandala for 30 minutes/day in the evenings for six consecutive days. In order not to interrupt the duties of the nurse and doctor in the clinic, it was planned for the experimental group to paint mandalas in the evening. Six pre-selected mandalas were planned to be printed separately on A4 paper. Each patient will be given a new mandala each day. At the beginning of the study, six colors will be given to the experimental group (yellow, blue, green, red, purple, brown). It was planned to do it for 6 days, as it was found that painting mandala for more than a week in the studies could reduce the patient's attention. In addition, based on the average hospitalization days of the patients, reaching patients for more than a week will be a problem.

Inclusion Criteria:

• Having agreed to participate in the research/approved the informed consent form
• No visual or hearing impairment
• Hospitalization due to Coronary Heart Disease (patients hospitalized with the diagnosis of acute coronary syndromes such as stable angina, unstable angina, myocardial infarction, percutaneous coronary intervention and stent implantation),
• Being over 18 years old,
• Being at least literate
• The absence of any problem that would prevent him/her from painting mandala (no problem in his arm or hand that would prevent his movement (such as paralysis, or the presence of a catheter on the hand), no serious illness)
• Must not have a diagnosis of mental illness/anxiety disorder

Exclusion Criteria:

• Control group patients who coincided with the same room as the intervention group, by randomization.
• Patients who want to quit the study voluntarily during the study
• Patients whose general condition deteriorates (such as altered hemodynamics or consciousness)

It was planned to use block randomization for the random assignment of patients to the experimental and control groups.