Clinical Study
Clinical Experience of Auditory Brainstem Response Testing on Pediatric Patients in the Operating Room
Table 5
Potential factors affecting ABR outcomes in the operating room.
| | | Potential effects on ABR |
| Surgical-related factors | Surgical procedures | Temporary shift in thresholds | Middle ear effusion | Elevation of thresholds | Use of anesthesia medication | Poor ABR recording |
| Equipment-related factors | Power source | 60 Hz interference on ABR recording | Medical devices used in the operating room | Electromagnetic interferences | Patients’ own medical devices | Electromagnetic interferences | High level background noises | Elevation of low-frequency ABR thresholds |
| Patients’ physiologic and neurologic status | Changes in blood oxygen level, blood pressures and body temperature, and so forth. | Poor ABR waveforms, delays in ABR latencies, and reduction of ABR amplitude. |
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