The effects of listening to natural sound on pain intensity after Coronary artery bypass graft surgery.

The aim of this study is evaluating the effect of listening to natural sounds in reducing pain after coronary artery bypass graft

Study is randomized single-bilnded parallel 2-arm clinical trial, designed on 92 patients undergo Coronary artery bypass graft to assessment severity of pain after listening natural sounds.

The randomized single blind clinical trial, conducted in open heart Intensive care unit Sina hospital. 92 patients who were scheduled to undergo Coronary artery bypass graft surgery were randomly allocated in two groups of 46. 1 group listened to their natural sound in two times (morning and afternoon), whereas the other group did not listen to natural sound. Using a visual analog Scale, pain intensity was measured before the intervention and 20 min after the intervention. Morphine dosage, need for inotropic and need for balloon pomp and VAS numbers were compared between two groups.

Inclusion criteria:Patient desire for participating in study, nonemergency surgery, first experience of open heart surgery, stable hemodynamic SBP 90mmgh, no life threatening dysthymia, HR 60-100, age more than 15y, non addiction, no sedative medication addiction, no mental retardation, no hearing impairment. Exclusion criteria: using unusual analgesic interventions like massage therapy, delirium, any postoperation side effects, patients undesired for participation.

Intervention group listened to their natural sound in two times (morning and afternoon), whereas the other group did not listen to natural sound. Using VAS, pain intensity was measured among the patients before the intervention and 20min after the intervention. Morphine dosage, need for inotropic and need for balloon pomp and VAS were compared between two groups.

Visual analog scale , Balloon pomp, morphine, inotropic

In this clinical trial study, 92 patients who were scheduled to undergo CABG surgery randomly will be included in the study .For random allocation of individuals in the study groups (intervention or intervention group and comparison or comparison group), the method of random allocation with block method (Block Randomization) will be used In this method, blocks with siza of six (including three people in the intervention group and three people in the comparison group) with a ratio of 1: 1 will be used. Random Allocation software will be used to generate random sequences. For concealment, the random allocation concealment method is used in such a way that random sequences are created. In this method, they are identified on the cards and these cards are placed inside the sealed envelopes in order .In order to maintain the created sequence, numbering will be done on the outer surface of the envelopes. Finally, the numbered

This study is single-blinded and blinding is done only on the analyzer that is unaware about two groups.

All patient data can be shared through files after identifying them.

Access period 1 month after printing the results

The data will be available only to researchers working in academic and scientific institutions.

Any use to help advance science is unrestricted.

Email address to mahsa ghorbanzadeh Mahsaghorbanzadeh92@gmail.com

After sending an email to request, they can access the information within a month.