Abstract :
Background: Vasoconstriction and a drop in the perfusion index (PI) are brought on by an unpleasant stimulus. The visual analog scale (VAS) is a subjective instrument for measuring pain. To employ PI as an objective measure for postoperative pain assessment, our study will correlate PI with VAS. Materials and Methods: A study including 72 patients (18-50 years old) undergoing laparoscopic cholecystectomy was carried out prospectively through observation. The first timepoint (T1) in the postoperative phase, during which heart rate (HR), mean arterial blood pressure (MAP), peripheral oxygen saturation (SPO2), VAS, and PI were collected, was regarded as the initial request for analgesia. 1 mcg/kg of inj. fentanyl was utilized as a rescue analgesic. After thirty minutes of rescue analgesia, all previously listed parameters were recorded at the second timepoint (T2). The second request for rescue analgesia was taken as the third timepoint (T3) and thirty minutes later as the fourth timepoint (T4) and all the above-said parameters were recorded. Results: PI increased after rescue analgesia from T1 (8.29±2.50) & T3 (8.63±2.49) to T2 (9.42±2.41) & T4 (9.38±2.54) respectively. This increase in PI between the time points were statistically significant with p-value <0.05. With respect to other parameters, PI shows a significant negative correlation between HR, MAP, SPO2 and VAS score at T2 and T4 with p-value <0.05. However, there was no significant correlation between SBP and PI at any time point. Conclusion: Perfusion Index values can be utilized as a reference when choosing the right analgesic to treat postoperative pain as well as an objective instrument for assessing postoperative pain.
Keyword :
Atopic eczema, Serum IgE, Absolute eosinophil count, SCORAD