scholarly journals 1362 Early Experience on Flap Perfusion? Monitoring with Near-Infrared Spectroscopy Tissue Oximetry

2021 ◽  
Vol 108 (Supplement_6) ◽  
Author(s):  
A Hagiga ◽  
D Ece Kumbasar ◽  
O Dawood ◽  
J Enrique Berner ◽  
A Blackburn
Keyword(s):  
Infrared Spectroscopy ◽  
Clinical Examination ◽  
Free Flap ◽  
Near Infrared ◽  
Vascular Complications ◽  
Flap Reconstruction ◽  
Success Rates ◽  
Free Flap Monitoring ◽  
Tissue Oximetry ◽  
Flap Perfusion

Abstract Introduction Free flap reconstruction is a routine procedure with more than 99% success rates. Yet, vascular complications may occur leading to flap failure. Thus, early detection of vascular compromise is crucial for flap salvage. Vascular complications may be detected early using Infrared Spectroscopy Tissue Oximetry (NIRS) parameter changes. This method can distinguish changes caused by arterial and venous thrombosis before surgical re-exploration. This study aims to assess the validity or feasibility of using NIRS Oximetry in free flap monitoring and compare it to standard clinical examination and Doppler . Method A prospective cohort observational study. Flap perfusion was measured using the INVOS™ 7100 system for 24-h continuous postoperative monitoring. The data were compared to findings of clinical assessment. Results Ten patients completed the measurements after breast flap reconstruction. Age ranged from 41 to 61 years. Patients underwent immediate d eep inferior epigastric perforators (DIEP) (n = 4), delayed DIEP (n = 4), transverse upper gracilis flap (n = 1), and latissimus dorsi flap with lipofilling (n = 1). All ten flaps are successfully monitored for 24hrs post-operatively. The overall flap survival was 100%. Clinical examination, Doppler studies and surgical outcome were consistent with NIRS (need numbers). There were no false negatives. Conclusions NIRS tissue oximetry could potentially monitor flaps non-invasively. Future adequately sampled cohort study is recommended.

Free Flap Monitoring Using Near-Infrared Spectroscopy

2016 ◽  
Vol 76 (5) ◽  
pp. 590-597 ◽  
Author(s):  
Ying Chen ◽  
Zhenzhou Shen ◽  
Zhimin Shao ◽  
Peirong Yu ◽  
Jiong Wu
Keyword(s):  
Infrared Spectroscopy ◽  
Near Infrared Spectroscopy ◽  
Free Flap ◽  
Near Infrared ◽  
Free Flap Monitoring ◽  
Flap Monitoring

Tissue oximetry by near-infrared spectroscopy in a porcine model of out-of-hospital cardiac arrest and resuscitation

Resuscitation ◽  
2013 ◽  
Vol 84 (6) ◽  
pp. 843-847 ◽  
Author(s):  
Joshua C. Reynolds ◽  
David Salcido ◽  
Allison C. Koller ◽  
Matthew L. Sundermann ◽  
Adam Frisch ◽  
...  
Keyword(s):  
Cardiac Arrest ◽  
Infrared Spectroscopy ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Porcine Model ◽  
Hospital Cardiac Arrest ◽  
Tissue Oximetry

scholarly journals Quantifying cerebral hypoxia by near-infrared spectroscopy tissue oximetry: the role of arterial-to-venous blood volume ratio

2017 ◽  
Vol 22 (2) ◽  
pp. 025001 ◽  
Author(s):  
Martin B. Rasmussen ◽  
Vibeke R. Eriksen ◽  
Bjørn Andresen ◽  
Simon Hyttel-Sørensen ◽  
Gorm Greisen
Keyword(s):  
Infrared Spectroscopy ◽  
Blood Volume ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Venous Blood ◽  
Volume Ratio ◽  
Cerebral Hypoxia ◽  
Venous Blood Volume ◽  
Tissue Oximetry

Monitoring Breast Reconstruction Flaps Using Near-Infrared Spectroscopy Tissue Oximetry

2021 ◽  
Vol 41 (2) ◽  
pp. 108-111 ◽  
Author(s):  
Duygu Ece Kumbasar ◽  
Ahmed Hagiga ◽  
Omar Dawood ◽  
Juan Enrique Berner ◽  
Adam Blackburn
Keyword(s):  
Infrared Spectroscopy ◽  
Breast Reconstruction ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Tissue Oximetry

scholarly journals Near-Infrared Spectroscopy (NIRS) versus Hyperspectral Imaging (HSI) to Detect Flap Failure in Reconstructive Surgery: A Systematic Review

Life ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 65
Author(s):  
Anouk A. M. A. Lindelauf ◽  
Alexander G. Saelmans ◽  
Sander M. J. van Kuijk ◽  
René R. W. J. van der Hulst ◽  
Rutger M. Schols
Keyword(s):  
Systematic Review ◽  
Infrared Spectroscopy ◽  
Hyperspectral Imaging ◽  
Near Infrared Spectroscopy ◽  
Free Flap ◽  
Near Infrared ◽  
Flap Survival ◽  
Non Invasive ◽  
Vascular Compromise ◽  
Flap Monitoring

Rapid identification of possible vascular compromise in free flap reconstruction to minimize time to reoperation improves achieving free flap salvage. Subjective clinical assessment, often complemented with handheld Doppler, is the golden standard for flap monitoring; but this lacks consistency and may be variable. Non-invasive optical methods such as near-infrared spectroscopy (NIRS) and hyperspectral imaging (HSI) could facilitate objective flap monitoring. A systematic review was conducted to compare NIRS with HSI in detecting vascular compromise in reconstructive flap surgery as compared to standard monitoring. A literature search was performed using PubMed and Embase scientific database in August 2021. Studies were selected by two independent reviewers. Sixteen NIRS and five HSI studies were included. In total, 3662 flap procedures were carried out in 1970 patients using NIRS. Simultaneously; 90 flaps were performed in 90 patients using HSI. HSI and NIRS flap survival were 92.5% (95% CI: 83.3–96.8) and 99.2% (95% CI: 97.8–99.7). Statistically significant differences were observed in flap survival (p = 0.02); flaps returned to OR (p = 0.04); salvage rate (p < 0.01) and partial flap loss rate (p < 0.01). However, no statistically significant difference was observed concerning flaps with vascular crisis (p = 0.39). NIRS and HSI have proven to be reliable; accurate and user-friendly monitoring methods. However, based on the currently available literature, no firm conclusions can be drawn concerning non-invasive monitoring technique superiority

scholarly journals A Wireless Near-Infrared Spectroscopy Device for Flap Monitoring: Proof of Concept in a Porcine Musculocutaneous Flap Model

2021 ◽  
Author(s):  
Changsheng Wu ◽  
Alina Y. Rwei ◽  
Jong Yoon Lee ◽  
Wei Ouyang ◽  
Lauren Jacobson ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
User Experience ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Tissue Oxygen Saturation ◽  
False Alarms ◽  
Battery Life ◽  
Novel Device ◽  
Free Flap Monitoring ◽  
Flap Monitoring

Abstract Background Current near-infrared spectroscopy (NIRS)-based systems for continuous flap monitoring are highly sensitive for detecting malperfusion. However, the clinical utility and user experience are limited by the wired connection between the sensor and bedside console. This wire leads to instability of the flap–sensor interface and may cause false alarms. Methods We present a novel wearable wireless NIRS sensor for continuous fasciocutaneous free flap monitoring. This waterproof silicone-encapsulated Bluetooth-enabled device contains two light-emitting diodes and two photodetectors in addition to a battery sufficient for 5 days of uninterrupted function. This novel device was compared with a ViOptix T.Ox monitor in a porcine rectus abdominus myocutaneous flap model of arterial and venous occlusions. Results Devices were tested in four flaps using three animals. Both devices produced very similar tissue oxygen saturation (StO2) tracings throughout the vascular clamping events, with obvious and parallel changes occurring on arterial clamping, arterial release, venous clamping, and venous release. Small interdevice variations in absolute StO2 value readings and magnitude of change were observed. The normalized cross-correlation at zero lag describing correspondence between the novel NIRS and T.Ox devices was >0.99 in each trial. Conclusion The wireless NIRS flap monitor is capable of detecting StO2 changes resultant from arterial vascular occlusive events. In this porcine flap model, the functionality of this novel sensor closely mirrored that of the T.Ox wired platform. This device is waterproof, highly adhesive, skin conforming, and has sufficient battery life to function for 5 days. Clinical testing is necessary to determine if this wireless functionality translates into fewer false-positive alarms and a better user experience.

scholarly journals Tissue Oximetry Free Flap Monitoring in the Head and Neck

2012 ◽  
Vol 147 (2_suppl) ◽  
pp. P129-P130 ◽  
Author(s):  
Amr N. Rabie ◽  
Ahmed Ibrahim ◽  
Samuel J. Lin
Keyword(s):  
Head And Neck ◽  
Free Flap ◽  
Free Flap Monitoring ◽  
Flap Monitoring ◽  
Tissue Oximetry
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