2009 November - Anesthesia Progress Blog

Archive for November, 2009

Bispectral EEG Index Monitoring of High-Dose Nitrous Oxide: METHODS

30 Nov 2009

With the approval of The Ohio State University IRB Human Subjects Committee, 22 healthy volunteer dental students, both male and female, were recruited in pairs to participate in a single-blinded clinical protocol. A power analysis was performed on data from previous similar studies and indicated that an N (least significantnumber) greater than 15 should provide [...]

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Tags: Amnesia, BIS, Conscious sedation, EMG, Nitrous oxide, Sevoflurane

Bispectral EEG Index Monitoring of High-Dose Nitrous Oxide

In: Main

29 Nov 2009

This study sought to characterize the effects of 3070% nitrous oxide and 0.2-0.8% sevoflurane conscious sedation on quantitative electroencephalographic (EEG) readings as measured by the bispectral index (BIS). BIS is a processed parameter (algorithm) made available in 1997 by Aspect Medical Systems (Newton, Mass). As depicted in Figure 1, it is specifically designed to correlate [...]

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Tags: Amnesia, BIS, Conscious sedation, EMG, Nitrous oxide, Sevoflurane

Anesthetic Efficacy of an Infiltration: DISCUSSION

In: Anesthesia

28 Nov 2009

DISCUSSION
The use of the 80 reading as a criterion for pulpal anesthesia was based on the studies of Dreven et al and Certosimo and Archer. These studies showed that an 80 reading ensured pulpal anesthesia in vital asymptomatic teeth. Additionally, Certosimo and Archer demonstrated that electric pulp test readings less than 80 resulted in pain [...]

Anesthetic Efficacy of an Infiltration: RESULTS

In: Anesthesia

27 Nov 2009

RESULTS
Forty adult patients, 30 men and 10 women, aged 2034 years, with an average age of 26 years, participated in this study. One hundred percent of the patients had subjective lip anesthesia with the IAN blocks. The rates of anesthetic success are presented in Table 1. Success rates for the IAN block alone ranged from [...]

Anesthetic Efficacy of an Infiltration: MATERIALS AND METHODS

In: Anesthesia

26 Nov 2009

MATERIALS AND METHODS
Forty adult patients participated in this study. The patients were in good health and were not taking any medications that would alter pain perception. The Ohio State University Human Subjects Review Committee approved the study, and written informed consent was obtained from each patient.

Anesthetic Efficacy of an Infiltration

In: Anesthesia

25 Nov 2009

The inferior alveolar nerve (IAN) block is the most frequently used mandibular injection technique for achieving local anesthesia for restorative and surgical procedures. However, the IAN block does not always result in successful pulpal anesthesia. Failure rates in anterior teeth have ranged from 10%-90%.

A Comparison of Intraoral Injection Discomfort Produced: DISCUSSION

In: Anesthesia

24 Nov 2009

A number of methods may be used to reduce the discomfort of local anesthetic injections. These might include the application of topical anesthetics before needle penetration and a slow rate of injection. However, there is little evidence in the literature that the various methods proposed are reliable. Even the use of topical anesthetics before injection [...]