Table 2 Events of hypoxemia and hypotension during bronchoscopic sedation*.

From: Capnography monitoring the hypoventilation during the induction of bronchoscopic sedation: A randomized controlled trial

Events, n (%)

Study group (n = 55)

Control group (n = 59)

P value

Hypoxemia

 Induction† (A)

0 (0)

2 (3.4)

0.5

 Procedure# (B)

19 (34.5)

18 (44.1)

0.3

 SpO2 less than 80%

2 (3.7)

4 (6.8)

0.7

 Recovery§ (C)

8 (14.5)

13 (22.0)

0.3

 SpO2 less than 80%

0 (0)

2 (3.4)

0.5

 At least one event (any A or B or C in one patient)

26 (47.3)

29 (49.2)

0.9

 Concurrent events (A + B or B + C or A + C in one patient)

1 (1.8)

11 (18.6)

<0.01

Hypotension

 Induction†

 MAP < 65 mmHg

0 (0)

0 (0)

—

 SBP < 90 mmHg

0 (0)

1 (1.7)

1.0

Procedure#

 MAP < 65 mmHg

5 (9.1)

4 (6.8)

0.7

 SBP < 90 mmHg

7 (12.7)

8 (13.6)

1.0

Recovery§

 MAP < 65 mmHg

4 (7.3)

4 (6.8)

1.0

 SBP < 90 mmHg

7 (12.7)

4 (6.8)

0.4

  1. Data are presented as number and percentage.
  2. Abbreviations: SpO2: oxyhemoglobin saturation; MAP: mean arterial pressure; SBP: systolic blood pressure.
  3. *The proportions of patients with at least one event of hypoxemia (SpO2 < 90%) or hypotension (MAP < 65 mmHg or SBP < 90 mmHg) during the entire procedure.
  4. †From administration of propofol to the time point of Ce of induction.
  5. #From insertion of bronchoscope to removal.
  6. §Duration between complete bronchoscopy and regain orientation.
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