Here we comment on the paper entitled "A novel laparoscopic pulse oximeter device. An easy, efficient and cost-effective way of detecting arterial structures." authored by Theodosopoulos et al., and recently published in the April issue of the Journal of Clinical Monitoring and Computing.
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| http://dx.doi.org/10.1007/s10877-010-9239-z | DOI Listing |
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Feasibility of Wearable Sensors to Assess Cognitive Load During Clinical Performance: Lessons Learned and Blueprint for Success.
J Surg Res
October 2024
Clinical Surgery, University of Edinburgh & Royal Infirmary of Edinburgh, Edinburgh, Scotland; Surgical Sabermetrics Laboratory, Usher Institute, University of Edinburgh, Edinburgh, Scotland. Electronic address:
Introduction: Cognitive load (CogL) is increasingly recognized as an important resource underlying operative performance. Current innovations in surgery aim to develop objective performance metrics via physiological monitoring from wearable digital sensors. Surgeons have access to consumer technology that could measure CogL but need guidance regarding device selection and implementation.
View Article and Find Full Text PDFIntra-abdominal laparoscopic assessment of organs perfusion using imaging photoplethysmography.
Surg Endosc
November 2023
Laboratory of New Functional Materials for Photonics, Institute of Automation and Control Processes of the Far Eastern Branch of the Russian Academy of Sciences, Vladivostok, Russia, 690041.
Background: An objective evaluation of the functional state and viability of biological tissues during minimally invasive surgery remains unsolved task. Various non-contact methods for evaluating perfusion during laparoscopic surgery are discussed in the literature, but so far there have been no reports of their use in clinical settings.
Methods And Patients: Imaging photoplethysmography (iPPG) is a new method for quantitative assessment of perfusion distribution along the tissue.
[Possibilities of tissue perfusion assessment in abdominal surgery: integration into the intraoperative system of safety control points].
Khirurgiia (Mosk)
September 2023
North-Western District Scientific and Clinical Center named after L.G. Sokolov of the Federal Medical and Biological Agency, St. Petersburg, Russia.
Objective: To evaluate the possibility of integrating tissue perfusion assessment techniques (ICG perfusion and imaging photoplethysmography - iPPG) into the system of intraoperative control points of laparoscopic interventions with a reconstructive component.
Materials And Methods: Quantitative assessment of ICG fluorescence and iPPG were used during 8 laparoscopically assisted interventions: gastrectomy for gastric cancer (total - 2 and distal - 1) and colorectal resections (left-sided colorectal resections - 4 and right hemicolectomy - 1).
Results: Four stages are presented for the assessment of tissue perfusion: initial assessment, before intestine transection, before anastomosis formation, and evaluation of anastomosis.
Evaluation of a wrist-worn photoplethysmography monitor for heart rate variability estimation in patients recovering from laparoscopic colon resection.
J Clin Monit Comput
February 2023
Department of Surgery, Päijät-Häme Central Hospital, Tampere University, Lahti, Finland.
To evaluate the accuracy of heart rate variability (HRV) parameters obtained with a wrist-worn photoplethysmography (PPG) monitor in patients recovering from minimally invasive colon resection to investigate whether PPG has potential in postoperative patient monitoring. 31 patients were monitored for three days or until discharge or reoperation using a wrist-worn PPG monitor (PulseOn, Finland) with a Holter monitor (Faros 360, Bittium Biosignals, Finland) as a reference measurement device. Beat-to-beat intervals (BBI) and HRV information collected by PPG were compared with RR intervals (RRI) and HRV obtained from the ECG reference after removing artefacts and ectopic beats.
View Article and Find Full Text PDFUnexpected sawtooth artifact in beat-to-beat pulse transit time measured from patient monitor data.
PLoS One
March 2020
Department of Mathematics, Duke University, Durham, NC, United States of America.
Object: It is increasingly popular to collect as much data as possible in the hospital setting from clinical monitors for research purposes. However, in this setup the data calibration issue is often not discussed and, rather, implicitly assumed, while the clinical monitors might not be designed for the data analysis purpose. We hypothesize that this calibration issue for a secondary analysis may become an important source of artifacts in patient monitor data.
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