Investigation of photoplethysmographic signals and blood oxygen saturation values obtained from human splanchnic organs using a fiber optic sensor.
Objective: A reliable, continuous method of monitoring splanchnic organ oxygen saturation could allow for the early detection of malperfusion, and may prevent the onset of multiple organ failure. Current monitoring techniques have not been widely accepted in critical care monitoring. As a preliminar...
| Publicado en: | Journal of Clinical Monitoring & Computing Vol. 25; no. 4; pp. 245 - 256 |
|---|---|
| Autores principales: | , , , , , , , , , |
| Formato: | research Journal Article |
| Publicado: |
Springer Nature
Aug2011
|
| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=104584982&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 104584982 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 13871307 OHC jtl: Journal of Clinical Monitoring & Computing issn: 13871307 maglogo: N pubinfo: dt: Aug2011 vid: 25 iid: 4 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 104584982 66257491 NLM21953382 2011299132 10.1007/s10877-011-9302-4 NLM21953382 104584982 ppf: 245 ppct: 11 formats: fmt: – @attributes: type: T – @attributes: type: P tig: atl: Investigation of photoplethysmographic signals and blood oxygen saturation values obtained from human splanchnic organs using a fiber optic sensor. aug: au: Hickey M Samuels N Randive N Langford RM Kyriacou PA Hickey, Michelle Samuels, Neal Randive, Nilesh Langford, R M Kyriacou, P A affil: School of Engineering and Mathematical Sciences, City University London, Northampton Square, London, EC1V 0HB, UK sug: subj: Oximetry Equipment and Supplies Oxygen Blood Plethysmography Equipment and Supplies Splanchnic Circulation Adult Blood Gas Monitoring, Transcutaneous Equipment and Supplies Blood Gas Monitoring, Transcutaneous Methods Female Fingers Human Radiation, Non-Ionizing Laparotomy Male Middle Age Intraoperative Monitoring Equipment and Supplies Intraoperative Monitoring Methods Equipment and Supplies Oximetry Methods Plethysmography Methods Adult: 19-44 years Middle Aged: 45-64 years Female Male ab: Objective: A reliable, continuous method of monitoring splanchnic organ oxygen saturation could allow for the early detection of malperfusion, and may prevent the onset of multiple organ failure. Current monitoring techniques have not been widely accepted in critical care monitoring. As a preliminary to developing a continuous indwelling device, this study evaluates a new handheld fiber optic photoplethysmographic (PPG) sensor for estimating the blood oxygen saturation (SpO(2)) of splanchnic organs during surgery.Methods: A fiber optic splanchnic PPG sensor, instrumentation system and virtual instrument were developed to facilitate PPG and SpO(2) measurement from splanchnic organs. Following Local Research Ethics Committee approval, the sensor was evaluated on seventeen ASA 1 and 2 patients undergoing open laparotomy. PPG signals were obtained from the large bowel, small bowel, liver and stomach. Simultaneous PPG signals from the finger were also obtained using an identical fiber optic sensor.Results: Good quality PPG signals with high signal-to-noise (SNR) ratios were obtained from all splanchnic sites under investigation. Analysis of the ac and dc amplitudes of the red and infrared PPG signals showed there to be a statistically significant difference between PPG signals obtained from splanchnic organs with those obtained from the finger (using fiber optic sensors). Estimated SpO(2) values from the splanchnic organs show good agreement with those obtained from the finger using both a fiber optic sensor and a commercial device. Furthermore, the results of a Bland and Altman analysis indicate that fiber optic splanchnic pulse oximetry, particularly of the bowel, may provide a suitable method for monitoring splanchnic organ perfusion.Conclusion: The evaluation of a new fiber optic sensor on anaesthetized patients undergoing laparotomy demonstrated that good quality PPG signals and SpO(2) estimates can be obtained from splanchnic organs. Such a sensor may provide a useful tool for the intraoperative assessment of splanchnic perfusion. pubtype: Academic Journal doctype: research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
|---|