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Table 2 Patient and procedure characteristics of MAC cases converted to GA vs. not converted to GA

From: Analysis of urgent/emergent conversions from monitored anesthesia care to general anesthesia with airway instrumentation

 

MAC cases converted to GA

MAC cases NOT converted to GA

p-valuea, b

Sample size, n

1052

205,404

 

Age, mean (SD) in years

57.5 (17.3)

57.8 (17.0)

0.59

Sex, n (%)

  

< 0.001

 Male

556 (0.6)

96,499 (99.4)

 

 Female

496 (0.5)

108,850 (99.5)

 

BMI, mean (SD) in kg/m2

28.2 (6.8)

27.0 (6.5)

< 0.001

BMI, n (%)

  

< 0.001

 < 18

35 (0.5)

7104 (99.5)

 

 18–25

323 (0.4)

83,704 (99.6)

 

 26–30

325 (0.5)

60,624 (99.5)

 

 31–35

164 (0.6)

26,577 (99.4)

 

 > 35

124 (0.7)

18,243 (99.3)

 

 missing

81 (0.9)

9152 (99.1)

 

ASA-PS, n (%)

  

0.28

 1

144 (0.6)

24,924 (99.4)

 

 2

418 (0.5)

84,879 (99.5)

 

 3

375 (0.5)

75,951 (99.5)

 

 4

111 (0.6)

19,040 (99.4)

 

 5

3 (0.5)

594 (99.5)

 

 missing

1 (5.9)

16 (94.1)

 

Care Team, n (%)

  

< 0.001

 Attending alone

108 (0.2)

46,013 (99.8)

 

 Resident or CRNA

944 (0.6)

159,391 (99.4)

 

Surgical sub-specialities, n (%)

  

< 0.001

 Oral & maxillofacial

8 (2.2)

351 (97.8)

 

 Otorhinolaryngology

50 (1.4)

3438 (98.6)

 

 Orthopedics

412 (1.3)

31,136 (98.7)

 

 Cardiothoracic

3 (0.8)

394 (99.2)

 

 Gynecology

32 (0.7)

4397 (99.3)

 

 Vascular

117 (0.5)

21,470 (99.5)

 

 General

113 (0.5)

21,507 (99.5)

 

 Interventional Cardiology

44 (0.5)

8625 (99.5)

 

 Urology

62 (0.5)

11,442 (99.5)

 

 Unknown

54 (0.4)

15,519 (99.6)

 

 Gastroenterology

68 (0.2)

37,494 (99.8)

 

 Other

66 (0.2)

32,833 (99.8)

 

 Colorectal

8 (0.1)

6097 (99.9)

 

 Ophthalmology

15 (0.1)

10,701 (99.9)

 
  1. Abbreviations: SD Standard deviation, BMI Body mass index, ASA-PS American Society for Anesthesiology Physical Status Classification, CRNA Certified registered nurse anesthetist
  2. ap-value compares MAC cases converted GA and MAC cases not converted to GA
  3. bt-test used to compare means and chi-squared test used to compare proportions.