& Aim: Decreased level of consciousness is one of the life-threatening complications associated with brain injuries. The aim of the study was to explore the effect of auditory and tactile stimulation by a family member on patients' consciousness level. Methods & Materials: This quasi-experimental study was conducted on 80 comatose patients with traumatic brain injury hospitalized in the intensive care units of Zahedan educational hospitals in 2019. Samples were selected by the convenience

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... ng methods and then randomly divided into experimental or control groups. Data collection tool included a demographic information questionnaire, and FOUR criteria for the level of awareness. For the experimental group, the intervention including auditory and tactile stimulation was performed by a family member for 10 minutes for seven consecutive days. The control group received routine interventions. To analyze the data, descriptive and inferential statistical tests (independent t-test, paired t-test, analysis of covariance, chi-square and repeated measures ANOVA) were used through the SPSS software version 21. Results: The results indicated no significant differences in the level of consciousness between the two groups on the first and fourth days. Yet, independent t-test, analysis of covariance and repeated measures ANOVA showed that the intervention group had significantly a higher level of consciousness on the fifth, sixth and seventh days compared to the control group (P<0.001). Conclusion: Findings showed that auditory and tactile stimulation by a family member is effective in increasing the level of consciousness in comatose patients with brain injury. So, this technique is recommended as an intervention in nursing care to increase the consciousness level in these patients.