This paper reviews the existing depth of anaesthesia(DoA) monitors and their algorithms and also proposes to improve their performance from four aspects.\n ideal DoA monitor should be able to suggest a personalised dr...This paper reviews the existing depth of anaesthesia(DoA) monitors and their algorithms and also proposes to improve their performance from four aspects.\n ideal DoA monitor should be able to suggest a personalised drug dosages,to predict and provide early warnings when dosages are inappropriate,to he porlalile and highty cost—effective.The limitations of the existing DoA monitors commonly include unsatisfied data filtering techniques.time delay for the monitoring responses,and inflexible and low noise immunity problems.The latest research results show that their performance can be improved using up—to—date computing technology and neurophysiology.The findings in Chinese market review show that neither the imported nor the Chinese domestic DoA monitors are widely utilised at hospitals.but the demand for DoA monitors is very high.Clearly there is a high demand which encourages the development of a better DoA monitor and its mass production in China.展开更多
Background: Hypnosis monitoring has been shown to reduce the incidence of awareness. A-line ARX-IndexTM (AAI) derived from auditory evoked potentials (AEP) represents as a numerical variable depth of anaesthesia. Obje...Background: Hypnosis monitoring has been shown to reduce the incidence of awareness. A-line ARX-IndexTM (AAI) derived from auditory evoked potentials (AEP) represents as a numerical variable depth of anaesthesia. Objectives: To study the efficacy of AEP as an indicator of anaesthetic depth and monitor intraoperative awareness in neurosurgical patients by using the AAI scale. Design: Prospective cohort study is used. Setting: The study is in Neurosurgical centre of Tertiary care hospital. Participants: Neurosurgical patients requiring general anaesthesia with duration of surgery between 90 - 150 minutes were enrolled for the study. Intervention: Patients in Group 1 (control) were monitored by conventional methods. Patients in Group 2 (study) underwent intraoperative monitoring by using the AEP monitor. Primary outcome: To study the efficacy of AEP monitoring and AAI index for monitoring the depth of anaesthesia and reducing the incidence of awareness. Results: There was no significant difference in the intraoperative haemodynamic responses measured between the two study groups (p > 0.5). There was no significant difference in the identification of intraoperative awareness by using conventional parameters between the two groups (p > 0.5). There was also a significantly faster time to recovery for patients in Group 2 (p < 0.05). Conclusion: Hypnosis monitoring using AEP monitor/AAI in neurosurgical patients under general anaesthesia did not show any significant difference in haemodynamic response and intraoperative awareness but had significant lower consumption of volatile anaesthetic with cost sparing effect and a faster recovery time as compared to conventional monitoring.展开更多
文摘This paper reviews the existing depth of anaesthesia(DoA) monitors and their algorithms and also proposes to improve their performance from four aspects.\n ideal DoA monitor should be able to suggest a personalised drug dosages,to predict and provide early warnings when dosages are inappropriate,to he porlalile and highty cost—effective.The limitations of the existing DoA monitors commonly include unsatisfied data filtering techniques.time delay for the monitoring responses,and inflexible and low noise immunity problems.The latest research results show that their performance can be improved using up—to—date computing technology and neurophysiology.The findings in Chinese market review show that neither the imported nor the Chinese domestic DoA monitors are widely utilised at hospitals.but the demand for DoA monitors is very high.Clearly there is a high demand which encourages the development of a better DoA monitor and its mass production in China.
文摘Background: Hypnosis monitoring has been shown to reduce the incidence of awareness. A-line ARX-IndexTM (AAI) derived from auditory evoked potentials (AEP) represents as a numerical variable depth of anaesthesia. Objectives: To study the efficacy of AEP as an indicator of anaesthetic depth and monitor intraoperative awareness in neurosurgical patients by using the AAI scale. Design: Prospective cohort study is used. Setting: The study is in Neurosurgical centre of Tertiary care hospital. Participants: Neurosurgical patients requiring general anaesthesia with duration of surgery between 90 - 150 minutes were enrolled for the study. Intervention: Patients in Group 1 (control) were monitored by conventional methods. Patients in Group 2 (study) underwent intraoperative monitoring by using the AEP monitor. Primary outcome: To study the efficacy of AEP monitoring and AAI index for monitoring the depth of anaesthesia and reducing the incidence of awareness. Results: There was no significant difference in the intraoperative haemodynamic responses measured between the two study groups (p > 0.5). There was no significant difference in the identification of intraoperative awareness by using conventional parameters between the two groups (p > 0.5). There was also a significantly faster time to recovery for patients in Group 2 (p < 0.05). Conclusion: Hypnosis monitoring using AEP monitor/AAI in neurosurgical patients under general anaesthesia did not show any significant difference in haemodynamic response and intraoperative awareness but had significant lower consumption of volatile anaesthetic with cost sparing effect and a faster recovery time as compared to conventional monitoring.
