Aims and objectives: To monitor perfusion index in each patient in immediate pre-operative period; To assess co-relation of perfusion index with other hemodynamic parameters observed simultaneously; and To observe variation in perfusion index with different anesthesia techniques- general anesthesia, neuraxial blockade and peripheral nerve blocks. Methodology: 50 cases each under ASA class I, II or III posted for elective surgeries under brachial plexus nerve blocks, neuraxial and general anesthesia were included. The perfusion index, heart rate, systolic and diastolic blood pressure was monitored in the immediate pre-operative period and after induction of anesthesia at 5, 10 and 15 mins. Results: In our study, it was noted perfusion index increased significantly from the baseline (p<0.001) in all the three anesthesia techniques. Systolic, diastolic pressure and heart rate showed significant decrease at 5, 10 and 15mins post anesthesia but in patients under general anesthesia category, decrease in heart rate was significant at 15 mins (p<0.001). Conclusion: In this study, it was concluded that perfusion index could be a simpler tool to assess the onset of anesthesia and help predicting the change in hemodynamic parameters that occurs with it.
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