Table 2 Summary of the adverse events

Respiratory-related AEs, n (%)

7 (17.5)

23 (57.5)

 < 0.001^*

 Respiratory depression, n (%)

5 (12.5)

18 (45.0)

0.001^*

 Apnea, n (%)

2 (5.0)

5 (12.5)

0.235

 Hypoxemia, n (%)

3 (7.5)

10 (25.0)

0.034^*

Hemodynamic-related AEs, n (%)

 Hypotension, n (%)

12 (30.0)

22 (55.0)

0.024^*

 Hypertension, n (%)

1 (2.5)

0 (0.0)

0.314

 Bradycardia, n (%)

0 (0.0)

2 (5.0)

0.152

Injection pain, n (%)

0 (0.0)

1 (2.5)

0.314

Cough, n (%)

7 (17.5)

5 (12.5)

0.531

Movement during procedure, n (%)

12 (30.0)

24 (60.0)

0.007^*

Dizziness, n (%)

3 (7.5)

2 (5.0)

0.644

Nausea/vomiting, n (%)

0 (0.0)

1 (2.5)

0.314