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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Anesthetic efficacy and heart rate effects of the intraosseous injection of 3% mepivacaine after an inferior alveolar nerve block.

OBJECTIVE: The purpose of this study was to determine the anesthetic efficacy and heart rate effects of an intraosseous injection of 3% mepivacaine after an inferior alveolar nerve block. STUDY DESIGN: Through use of a repeated-measures design, each of 48 subjects randomly received 2 combinations of injections at 2 separate appointments. The combinations were (1) an inferior alveolar nerve block (with 1.8 mL of 3% mepivacaine) + intraosseous injection with 1.8 mL of 3% mepivacaine and (2) an inferior alveolar nerve (with 1. 8 mL of 3% mepivacaine) + mock intraosseous injection. The first molar was blindly pulp tested at 2-minute cycles for 60 minutes postinjection. Anesthesia was considered successful with 2 consecutive 80 readings. Heart rate (pulse rate) was measured with a pulse oximeter. RESULTS: All subjects had lip numbness with both of the inferior alveolar nerve + intraosseous techniques. Anesthetic success for the first molar was significantly increased for 30 minutes with intraosseous injection of mepivacaine in comparison with the inferior alveolar nerve block alone (mock intraosseous injection). Subjects receiving the intraosseous injection of mepivacaine experienced minimal increases in heart rate. CONCLUSIONS: The intraosseous injection of 1.8 mL of 3% mepivacaine, when used to augment an inferior alveolar nerve block, significantly increased anesthetic success for 30 minutes in the first molar. The 3% mepivacaine had a minimal effect on heart rate and would be useful in patients with contraindications to epinephrine use.[1]

References

  1. Anesthetic efficacy and heart rate effects of the intraosseous injection of 3% mepivacaine after an inferior alveolar nerve block. Gallatin, E., Stabile, P., Reader, A., Nist, R., Beck, M. Oral surgery, oral medicine, oral pathology, oral radiology, and endodontics. (2000) [Pubmed]
 
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