• Turk J Med Sci · Jan 2024

    Does the pleth variability index have any predictive value for intraoperative respiratory problems in bariatric surgery?

    • Esra Özayar, Mehmet Şahap, Handan Güleç, Aysun Kurtay, Adem Selvi, Hakan Buluş, and Özlem Ari.
    • Department of Anesthesiology and Reanimation, Faculty of Medicine, University of Health Sciences, Ankara, Turkiye.
    • Turk J Med Sci. 2024 Jan 1; 54 (1): 115120115-120.

    Background/AimWe aimed to search the relationship between the preoperative PVI (pleth variability index) and intraoperative respiratory parameters to reveal whether PVI can be used as a prediction tool in bariatric surgery.Materials And MethodsForty patients undergoing bariatric surgery were included. Noninvasive pleth variability index measured via finger probe before induction of general anesthesia. Following intubation each patient was ventilated in controlled mode. Intraoperative blood pressure, peak airway pressure, end-tidal CO2, SpO2, PEEP, and FiO2 were recorded every 5 min for the first 10 min and then every 10 min until extubation. Steroid and bronchodilator requirements were recorded.ResultsThe systolic pressure-PVI, oxygen saturation-PVI relationship was statistically significant (p = 0.03, p = 0.013). A relationship was found between pleth variability index and peak airway pressure (p = 0.002). No correlation was detected between end-tidal CO2 and pleth variability index. The relationship between steroid, bronchodilator use, and PVI was significant (p = 0.05, p = 0.01). A positive correlation between PEEP and PVI was detected at varying time points. A positive correlation was found between FiO2-PVI.ConclusionA relationship was found between PVI and intraoperative peak airway pressures, oxygen saturation, PEEP, bronchodilatator, and steroid usage. This result may be inspiring to conduct larger studies addressing the issue of predicting intraoperative respiratory problems in bariatric surgeries.© TÜBİTAK.

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