Abstract
In this study, we performed heart rate variability (HRV) analysis of the non-medically compromised patients undergoing tooth extraction procedure using 2 ml local anaesthetic volume of 2% lignocaine with adrenaline. The increase in heart rate due to vasoconstriction in the peripheral blood vessels has been quantifying the sympathetic stimulation to the local anesthesia (LA). The ECG signal is recorded from dental patients in resting condition (before local anesthesia), 2–3 min after injection of local anesthesia and 5–10 min after the tooth extraction. The time domain and frequency domain analysis of HRV are used to quantify autonomic nervous system activity (ANS). Results show that increase in LFnu and LF/HF ratio and decrease in other parameters of HRV after injection of local anesthesia (PostLA) as compared to pre-local anesthesia (PreLA). The obtained result refers to the activation of sympathetic tone instead of discharge of vagal tone due to local anaesthesia.
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