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Analysis of Consciousness Level Using Galvanic Skin Response during Therapeutic Effect

  • Image & Signal Processing
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Abstract

The neurological status of patients in the Intensive Care Units (ICU) is determined by the Glasgow Coma Scale (GCS). Patients in coma are thought to be unaware of what is happening around them. However, many studies show that the family plays an important role in the recovery of the patient and is a great emotional resource. In this study, Galvanic Skin Response (GSR) signals were analyzed from 31 patients with low consciousness levels between GCS 3 and 8 to determine relationship between consciousness level and GSR signals as a new approach. The effect of family and nurse on unconscious patients was investigated by GSR signals recorded with a new proposed protocol. The signals were recorded during conversation and touching of the patient by the nurse and their families. According to numerical results, the level of consciousness can be separated using GSR signals. Also, it was found that family and nurse had statistically significant effects on the patient. Patients with GCS 3,4, and 5 were considered to have low level of consciousness, while patients with GCS 6,7, and 8 were considered to have high level of consciousness. According to our results, it is obtained lower GSR amplitude in low GCS (3, 4, 5) compared to high GCS (7, 8). It was concluded that these patients were aware of therapeutic affect although they were unconscious. During the classification stage of this study, the class imbalance problem, which is common in medical diagnosis, was solved using Synthetic Minority Over-Sampling Technique (SMOTE), Adaptive Synthetic Sampling (ADASYN) and random oversampling methods. In addition, level of consciousness was classified with 92.7% success using various decision tree algorithms. Random Forest was the method which provides higher accuracy compared to all other methods. The obtained results showed that GSR signal analysis recorded in different stages gives very successful GCS score classification performance according to literature studies.

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Acknowledgments

This study was approved by the Ethics Committee of Erciyes University Hospital with file number 2016/407. This study was supported by Erciyes University Scientific Research Projects Management Unit (Project number: FDK-2017-7531).

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Authors and Affiliations

  1. Department of Biomedical Engineering, Erciyes University, Kayseri, Turkey

    Çiğdem Gülüzar Altıntop, Fatma Latifoğlu & Ramis İleri

  2. Department of Anesthesiology and Reanimation, Erciyes University, Kayseri, Turkey

    Aynur Karayol Akın

  3. Department of Anesthesiology and Reanimation, Konya Training and Research Hospital, Konya, Turkey

    Mehmet Akif Yazar

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  1. Çiğdem Gülüzar Altıntop
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  2. Fatma Latifoğlu
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Correspondence to Fatma Latifoğlu.

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Altıntop, Ç.G., Latifoğlu, F., Akın, A.K. et al. Analysis of Consciousness Level Using Galvanic Skin Response during Therapeutic Effect. J Med Syst 45, 1 (2021). https://doi.org/10.1007/s10916-020-01677-5

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