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Table 2 Primary outcome and airway interventions during bronchoscopy

From: Incidence of oxygen desaturation using a high-flow nasal cannula versus a facemask during flexible bronchoscopy in patients at risk of hypoxemia: a randomised controlled trial

 

HFNC Group

(n = 87)

Facemask Group

(n = 89)

Odds Ratio (95%CI)

P value

Primary outcome

Nil, no. (%) a

83 (95.4)

63 (70.8)

-

< 0.001 b

Oxygen desaturation, no. (%)

4 (4.6)

26 (29.2)

0.093 (0.028 to 0.313)

 

Moderate desaturation, no. (%)

severe desaturation, no. (%)

4 (4.6)

0 (0)

18 (20.2)

8 (9.0)

0.163 (0.048 to 0.547)

-

0.001 b

0.005 b

Interventions

    

Jaw thrust manoeuvre, no. (%)

5 (5.7)

43 (48.3)

0.041 (0.012 to 0.134)

< 0.001

Increase the flow of oxygen, no. (%)

0 (0)

21 (23.6)

-

< 0.001

Mask ventilation, no. (%)

0 (0)

8 (9.0)

-

0.012

Intubation, no. (%)

0 (0)

0 (0)

-

NS

Number of bronchoscopy interruptions

0 (0)

8 (9.0)

-

0.012

  1. Data are presented as numbers (%)
  2. a Nil was defined as SpO2 ≥ 90%.
  3. bP < 0.0167 was considered statistically significant after Bonferroni correction