Keywords
prilocaine
local anesthesia
heart rate
blood pressure
pulse oximetry
Abstract
This study aimed to assess the effect of inferior alveolar nerve (IAN) block of the mandible and infiltration anesthesia of the maxilla using lidocaine plus epinephrine or prilocaine with felypressin anesthetic agents on systolic and diastolic blood pressures, heart rate (HR) and peripheral oxygen saturation rate of patients. This randomized double-blind clinical trial evaluated 112 patients in four groups (n=28) based on the jaw (maxilla or mandible) and type of anesthetic agent (lidocaine with epinephrine or prilocaine with felypressin). Groups 1 and 2 received IAN block of the mandible or infiltration anesthesia of the maxilla, respectively, with 2% lidocaine plus 1:80.000 epinephrine. Groups 3 and 4 received IAN block of the mandible or infiltration anesthesia of the maxilla, respectively, using prilocaine with felypressin. Systolic and diastolic blood pressures and HR were measured by an automatic upper arm blood pressure monitor and the percentage of peripheral oxygen saturation rate was measured by a finger pulse oximeter 10 minutes before the injection, immediately after injection, 10 minutes after injection and 20 minutes after injection.
The mean diastolic blood pressure showed a greater reduction following the administration of lidocaine with epinephrine, as compared with prilocaine with felypressin (p<0.001). The mean HR showed a significantly greater increase following the administration of lidocaine with epinephrine, as compared with prilocaine with felypressin (p<0.001). The effect of type of anesthetic agent on diastolic blood pressure depended on the type of injection (p=0.033).
Administration of 2% lidocaine with 1:80.000 epinephrine, in comparison to prilocaine with felypressin, can cause changes in cardiovascular parameters such as heart rate and diastolic blood pressure in patients undergoing restoration of a maxillary or mandibular molar tooth. Type of injection has no significant effect on cardiovascular parameters.
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