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Table 2 Complications, airway intervention and instrument insertion

From: High flow versus conventional nasal cannula for oxygenation and ventilation maintenance during surgery with intravenous deep sedation by propofol: a randomized controlled study

 

NC2 group (n = 18)

NHF group (n = 18)

P value

Complications

 Desaturation (SpO2 < 92%) during IVSa

13 (72.22%)

[46.52, 90.31%]

5 (27.78%)

[9.69, 53.48]

0.008*

 Upper airway obstruction during IVSb

13 (72.22%)

[46.52, 90.31%]

4 (22.22%)

[6.41, 47.63%]

0.003*

 Mucosal dryness

2 (11.11%)

[1.38, 34.71%]

1 (5.56%)

[0.14, 27.29%]

1.000

Required interventions

 Airway maneuverc

13 (72.22%)

[46.52, 90.31%]

6 (33.33%)

[13.34, 59.01%]

0.019*

 PPV requirementc

0 (0%)

1 (5.56%)

[0.14, 27.29%]

1.000

Instrument insertion

 Nasopharyngeal airway

6 (33.33%)

[13.34, 59.01%]

3 (16.67%)

[3.58, 41.41%]

0.443

 Oropharyngeal airway

2 (11.11%)

[1.38, 34.71%]

1 (5.56%)

[0.14, 27.29%]

1.000

  1. Parentheses are percentages and values in square brackets represent 95% confidence interval (CI)
  2. Abbreviations: IVS Intravenous sedation (IVS), PPV Positive pressure ventilation
  3. *Significant at P value < 0.05
  4. aDesaturation events after application of NC or NHF during deep sedation
  5. bUpper airway obstruction after application of NC or NHF during deep sedation. The Upper airway obstruction during IVS defined as the present of snoring with paradoxical breathing
  6. cOne patient in NHF group received airway maneuver with PPV without desaturation and upper airway obstruction during IVS because the patient had apnea