IRCT20170701034825N2 IRCT 2019-01-27 Vice chancellor for research of Yazd Shahid Sadoughi University of Medical Sciences ٍffect of controlled breathing on anxiety and fear in coronary angiography The effect of controlled breathing on anxiety and fear in patients undergoing coronary angiography 2019-02-20 anticipated 80 Complete https://irct.ir/trial/26508 interventional Randomization: Randomized, Blinding: Not blinded, Placebo: Not used, Assignment: Parallel, Purpose: Supportive, Randomization description: After random sampling using table of random numbers among all eligible patients admitted to Shahid Sadoughi hospital in Yazd for angiography, research objectives are explained telephone and it is mentioned that they may be in the intervention or control group. then patients are divided randomly into two intervention and control groups (each of the groups 40 patients). N/A Angina pectoris. Intervention 1: After a controlled breathing training, the participants in the intervention group are requested to use twenty minutes controlled breathing prior to angiography for ten minutes, as well as throughout the course of angiography. So they must inhale in 2 seconds, counting 1001, 1002 and exhale in 3 seconds, counting 1001, 1002, 1003 in their mind. Intervention 2: Control group: There is no intervention in the control group. No - There is not a plan to make this available Justification or reason for not sharing IPD is There is no more information.