Table 4.

Adverse events

	Group P	Group PK1	Group PK2	Group PK3	P value
Injection pain	3 (4.6%)	7 (10.8%)	2 (3.1%)	1 (1.5%)	0.149
Hypoxemia	14 (21.5%)	16 (24.6%)	23 (35.4%)	16 (24.6%)	0.297
Hypotension	11 (16.9%)	8 (12.3%)	3 (4.6%)	4 (6.2%)	0.072
Cough	46 (70.8%)	34 (52.3%)	37 (56.9%)	31 (47.7%)※	0.048
Body movement	54 (83.1%)	55 (84.6%)	42 (64.6%)	39 (60.0%)※†	0.001
Dizziness	7 (10.8%)	9 (13.8%)	6 (9.2%)	11 (16.9%)	0.563
Excessive oral secretion	0 (0%)	0 (0%)	0 (0%)	2 (3.1%)	0.247
Hypertension	0 (0%)	1 (1.5%)	0 (0%)	0 (0%)	1.000
Arrhythmia	0 (0%)	0 (0%)	0 (0%)	0 (0%)	1.000
Nausea and vomiting	0 (0%)	0 (0%)	0 (0%)	0 (0%)	1.000
Apnea	0 (0%)	0 (0%)	0 (0%)	0 (0%)	1.000

Data are presented as number (%); ※P < 0.05 compared with group P, †P < 0.05 compared with group PK1