LETTER TO EDITOR
Year : 2017 | Volume
| Issue : 2 | Page : 257
A simple method to reduce pulse oximetry interference by surgical optical navigation systems
Tetsuhito Hara, Masaaki Satoh, Mamoru Takeuchi
Department of Anesthesiology and Critical Care Medicine, Jichi Medical University, Shimotsuke, Tochigi, Japan
Department of Anesthesiology and Critical Care Medicine, Jichi Medical University, 3311-1, Yakushiji, Shimotsuke, Tochigi 329-0498
Source of Support: None, Conflict of Interest: None
|Date of Web Publication||27-Mar-2017|
|How to cite this article:|
Hara T, Satoh M, Takeuchi M. A simple method to reduce pulse oximetry interference by surgical optical navigation systems. Saudi J Anaesth 2017;11:257
|How to cite this URL:|
Hara T, Satoh M, Takeuchi M. A simple method to reduce pulse oximetry interference by surgical optical navigation systems. Saudi J Anaesth [serial online] 2017 [cited 2020 Apr 10];11:257. Available from: http://www.saudija.org/text.asp?2017/11/2/257/203060
Optical navigation systems (ONS), used in the operating room for image-guided surgery, may interfere with the measurement of pulse oximetry. Both ONS and pulse oximetry use pulses of infrared light.,, Infrared light does not penetrate the body, so it is recommended that the ONS be positioned on the opposite side to the pulse oximeter probe. We have observed that in circumstances when this is not feasible, for example, when the ONS is used in the midline, there is interference on the plethysmogram when the ONS is switched on. In these cases, covering the pulse oximeter with aluminum foil is recommended., We have verified the efficacy of using aluminum packaging for this purpose; it is easy to find aluminum foil packaging of objects, such as alcohol swabs and bispectral index sensors in the operating room [Figure 1]. We covered the pulse oximeter with such packaging and found that this technique was a very economical and effective means of reducing interference caused by the ONS. The ONS has the potential to complicate the safe conduct of anesthesia, but this is easily preventable. Should a pulse oximeter malfunction during image-guided surgery, we recommend covering it with aluminum packaging.
|Figure 1: Interference on the plethysmogram caused by an optical navigation system: (a) Arterial pressure waveform. (b) Plethysmogram on the optical navigation system side, covered by aluminum alcohol swab packaging after the third beat. (c) Plethysmogram on the non optical navigation system side|
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Conflicts of interest
There are no conflicts of interest.
| References|| |
Masaaki S, Tetsuhito H, Kenji T, Juntaro S, Kunihisa H, Mamoru T, et al
. Optical surgical navigation system causes pulse oximeter malfunction. J Anesth Clin Rep 2015;1:5.
Mathes AM, Kreuer S, Schneider SO, Ziegeler S, Grundmann U. The performance of six pulse oximeters in the environment of neuronavigation. Anesth Analg 2008;107:541-4.
van Oostrom JH, Mahla ME, Gravenstein D. The stealth station ™
image guidance system may interfere with pulse oximetry. Can J Anaesth 2005;52:379-82.
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