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Table 3 Perioperative Characteristics– Location, Surgical Service, Induction, Extubation, and Anesthesia-Controlled Times for the Anesthesia Provider Groups

From: The impact of an anesthesia residency teaching service on anesthesia-controlled time and postsurgical patient outcomes: a retrospective observational study on 15,084 surgical cases

 

Anesthesiologist

Group 1

N = 939

Resident

Group 2

N = 2644

CRNA/CAA

Group 3

N = 11,501

p-value

Surgical Location

   

< 0.001

Medical Center, (%, n)

5.4% (51) †

93.3% (2467) *

67.1% (7717)

 

Ambulatory Surgery Center, (%, n)

1.2% (11) †

2.9% (77) *

8.6% (992)

 

Community Hospital, (%, n)

93.5% (877) †

3.8% (100) *

24.3% (2792)

 

Surgical Service

   

< 0.001

General/Plastics, (%, n)

27.3% (256) †

21.1% (558)

20.2% (2328)

 

Gynecology, (%, n)

21.5% (202) †

12.8% (339)

13.0% (1492)

 

Head and Neck, (%, n)

4.2% (39) †

14.0% (370)

15.0% (1725)

 

Neurosurgery, (%, n)

4.3% (40)

4.9% (130)

6.2% (717)

 

Orthopedics, (%, n)

33.5% (315)

29.0% (768)

31.3% (3577)

 

ACS, Thoracic, Vascular, (%, n)

2.0% (19) †

11.0% (291)*

6.2% (716)

 

Urology, (%, n)

7.2% (68)

7.1% (188)

8.2% (946)

 

Endotracheal tube insertion %

69.6%

71.2%

68.7%

0.07

Arterial Line Insertion %

1.2%†

10.7%*

9.3%

< 0.001

Surgical Times

    

Anesthesia Ready Time (min)

8.7 [7.0-10.7]†

10.5 [8.5–13.4]*

9.5 [7.7–12.0]

< 0.001

Surgery End to Extubation Time (min)

7.9 [6.0-10.3]†

9.4 [6.8–12.8]*

9.0 [6.6–12.3]

< 0.001

Prolonged Extubation Time (>15 min, %, n)

1.7% (20) †

5.4% (170)

4.5% (631)

< 0.001

Surgery End to Out of Room Time (min)

12.1 [9.5–15.1]†

14.9 [11.7–19.3]*

13.9 [10.8–18.0]

< 0.001

Anesthesia-Controlled Time (min)

21.0 [17.9–25.4]†

26.1 [21.7–32.0]*

23.9 [19.7–29.5]

< 0.001

Anesthesia Ready to procedure start (min)

21.6 [16.0-27.5]†

24.0 [17.8–32.7]

23.0 [16.9–31.8]

< 0.001

Procedure Time (min)

79.0 [41.0-121.0]†

90.0 [49.0-148.0]

89.0 [48.0-150.0]

< 0.001

Total time in OR (min)

122.3 [79.3-168.4]†

137.3 [91.3-204.4]

135.8 [89.2-203.3]

< 0.001

  1. All cases performed with an Anesthesiology Resident or CRNA/CAA were performed with a supervising Anesthesiologist that was required to be present for induction and extubation (as indicated) for all cases
  2. Data are presented as mean ± standard deviation, median [25th percentile-75th percentile], or percent
  3. Data were analyzed using SPSS 29 with a one-factor ANOVA, Kruskal-Wallis, or a Chi-Square test. P-values were adjusted to account for multiple comparisons between groups
  4. † = p < 0.05 comparing Anesthesiologist group data to Resident and CRNA/CAA group data
  5. * = p < 0.05 comparing Resident group data to Anesthesiologist and CRNA/CAA group data
  6. ACS acute care surgery
  7. CRNA certified registered nurse anesthetist
  8. CAA certified anesthesiologist assistant
  9. min minutes
  10. OR operating room