Table 2 Characteristics of measurement systems
From: Instruments for monitoring intensive care unit sedation
Clinical utility | |||
|---|---|---|---|
Measuring system | Advantage and limitations | (rating points 0-50) | Reference |
Plasma drug concentration | Lack of agreement with level of sedation | 5 | [10] |
Frontalis electromyography | Interindividual variation | 10 | [11] |
Lower oesophageal contractility | Low sensitivity | 10 | [12] |
Continuous electroencephalography | Difficult interpretation | 15 | [13] |
Interagent variation | |||
Cerebral function monitor | Complex and difficult to interpret | 20 | [14] |
Cerebral function analyzing monitor | Complex and difficult to interpret | 25 | [15] |
Power spectral analysis | Not available for clinical use | 5 | [16] |
AEPs | Limited reliability in light sedation | 35 | [17] |
Adequate for research |