Clin Res Cardiol (2022). https://doi.org/10.1007/s00392-022-02002-5 |
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Impact of peripheral angioplasty on wound oxygenation measured with near-infrared spectroscopy in patients with critical limb ischemia | ||
R. J. Foerster1, M. Stern1, Y. Heinen1, S. Baasen1, J. Schremmer1, R. Sansone1, C. Heiss2, M. Kelm1, H. L. Busch1 | ||
1Klinik für Kardiologie, Pneumologie und Angiologie, Universitätsklinikum Düsseldorf, Düsseldorf; 2Faculty of Health and Medical Sciences, University of Surrey, Surrey, UK; | ||
Background: Up today, Near-infrared Spectroscopy (NIRS) has been proposed as a promising noninvasive tool for the assessment of hemoglobin oxygen saturation (StO2) in complex wounds in patients with critical limb ischemia (CLI).
Objective: Our aim was to evaluate the potential of NIRS to measure capillary oxygen saturation and microcirculation not only near the wound but also directly in the wound. Methods: We included 34 patients with PAD Rutherford stage 5-6 in this prospective, single center study. StO2 maps in and around the wound were analyzed at baseline one day before and one day after angioplasty using a NIRS camera; macrovascular function was assessed by Doppler ultrasound with spectral analysis including ankle-brachial index (ABI).
Results: We found that baseline StO2 of the wound area was 63% (± 3.66 [SE]) and 34% in the wound (± 4.8 [SE]). One day after angioplasty, wound area StO2 significantly increased to 71% (± 3.09 [SE]; p<0.001) and wound StO2 increased even more pronounced to 42% (± 4,77 [SE]; p<0.0001). Likewise, ABI increased in the treated leg (before 0.74 ± 0.03 [SE]; after 0.87 ± 0.02 [SE]; p = 0.008). Conclusion: NIRS seems to be a promising tool to monitor tissue perfusion and wound oxygenation in patients undergoing endovascular treatment. This is the first study to assess oxygenation in the wound using a NIRS camera after peripheral angioplasty. |
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https://dgk.org/kongress_programme/jt2022/aP880.html |