Average Recovery Time From a Standardized Intravenous Sedation Protocol: RESULTS

In: Dental treatment

5 Dec 2009

Patients included in the study ranged in age from 15 to 66 years, with an average of 37.8 ± 12.1 years. Weights ranged from 43 to 120 kg, with an average of 75.8 ± 15.4 kg (the Table). The majority were American Society of Anesthesiologists Category 1 and Category 2 patients (98%). Procedures undertaken included conservative dentistry, endodontic procedures, post and core preparations, crown preparations and impression, impressions for partied dentures, prophylaxis, simple extractions, surgical extractions, first stage implant placements, and regenerative membrane placement.

Figure 1. This figure demonstrates

Figure 1. This figure demonstrates the lack of relationship between length of procedure (minutes) and recovery time (minutes).

Figure 2. Graph showing lack of relationship

Figure 2. Graph showing lack of relationship between age (years) and recovery time (minutes).

Procedures carried out were considered in 2 broad categories. Category 1 included all surgical procedures including extraction, whether simple or impacted, implant placement, regenerative membrane placement, and implant procedures. Category 2 included all prosthetic-restorative procedures and prophylactic procedures. As would be expected in the general practice setting, there were overlaps in the category of procedures undertaken. If the procedures included items from both categories, the predominant procedures determined the categorization. Procedure times ranged from 8 to 185 minutes, with an average of 71.4 ± 37.5 minutes (median 64 minutes). Patients received 75-100 |xg of fentanyl, with mean 99.7 |xg and SD 2.8 (median 100 |ud), 3-15 mg of midazolam, with mean 5.9 mg and SD 1.9 (median 5 mg), and 10 mg (N = 4) to 400 (N = 2) mg propofol, with mean 137.2 mg and SD 89.0 (median 120 mg). There were 30 males and 55 females enrolled in this study, with a female to male ratio of 1.8:1. Overall mean recovery time was calculated to be 19.0 ±5.5 minutes (median 17 minutes). Male and female recovery times were considered separately, but there were no differences in recovery by gender (males, 19.2 ± 5.2 minutes, median 18 minutes; females, 18.9 ± 5.7 minutes, median 17 minutes). Recovery time was also considered by length of procedure, and there was no linear relationship (Figure 1).
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Figure 3. This scattergram shows weight

Figure 3. This scattergram shows weight (kg) versus recovery time (minutes).

Figure 4. Type of procedure

Figure 4. Type of procedure is not related to recovery time (minutes).

However, that there was a tendency to “release” patients after either 15 or 20 minutes may be related to the fact that vital signs were assessed every 5 minutes. Recovery time by age (Figure 2), weight (Figure 3), and type of procedure (Figure 4) was also examined with no discernable relationship found between the variables. Complications encountered during the sedations were negligible, and most were related to the IV access.
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