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. 2015 Jan 16;19(1):12. doi: 10.1186/s13054-014-0730-7

Table 1.

Comparison of intubation characteristics and procedural complication rates between first and last intubations in repeatedly intubated patients

Characteristic First intubation Last intubation Odds ratio P value
( n= 151) ( n= 151) (95% confidence interval)
Intubation location 0.18
 ICU 115 (77) 127 (86)
 Emergency department 15 (10) 8 (5)
 Procedural suite 2 (1) 2 (1)
 Hospital floor 15 (10) 11 (7)
 Other 3 (2) 0 (0)
Intubation indication 0.27
 Respiratory distress 53 (35) 57 (39)
 Airway protection 35 (23) 27 (18)
 Hypoxia 23 (15) 38 (26)
 Cardiac arrest 6 (4) 4 (3)
 Elective (preprocedure) 11 (7) 8 (5)
 Shock 6 (4) 2 (1)
 Other 16 (11) 12 (8)
Intubation attempts
 1 or 2 134 (89) 138 (91) Reference Reference
  ≥ 3 17 (11) 13 (9) 0.74 (0.36 to 1.52) 0.41
Rank of final intubator
 Fellow 98 (69) 106 (72) Reference Reference
 Resident or other 28 (10) 29 (20) 0.96 (0.58 to 1.58) 0.86
 Attending 16 (11) 13 (9) 0.75 (0.39 to 1.46) 0.40
Adjunct to DL used 16 (11) 18 (12) 1.13 (0.60 to 2.15) 0.70
Cormack–Lehane grade
 1 91 (61) 88 (58) Reference Reference
 2 33 (22) 38 (25) 1.19 (0.70 to 2.01) 0.52
 3 8 (5) 8 (5) 1.03 (0.39 to 2.71) 0.95
 4 3 (2) 5 (6) 1.72 (0.49 to 6.08) 0.40
Procedural complicationsa 8 (6) 19 (13) 2.51 (1.09 to 5.76) 0.03
 Major complications 6 (4) 14 (9)
  Hypotension 3 (2) 9 (6)
  Hypoxia 3 (2) 7 (5)
 Aspiration 1 (1) 3 (2)
 Arrhythmia 2 (1) 0 (0)
 Dental trauma 0 (0) 1 (1)
 Esophageal intubation 0 (0) 3 (2)

Raw data presented as number (%). DL, direct laryngoscopy. aComplications with frequencies of 0 are omitted from the table.