Clinical Study

Improved Analgesic Effect of Paravertebral Blocks before and after Video-Assisted Thoracic Surgery: A Prospective, Double-Blinded, Randomized Controlled Trial

Table 1

Demographic and surgical data.

Group AGroup BGroup C value

Number of patients151514
Gender0.951
 Male8 (53.33%)7 (46.67%)7 (50.00%)
 Female7 (46.67%)8 (53.33%)7 (50.00%)
Age (y)53.00 (40.00, 58.00)56.00 (51.00, 64.00)55.50 (45.25, 66.25)0.357
BMI (kg/m2)22.40 ± 3.6823.38 ± 3.7923.56 ± 3.560.656
ASA I2 (13.33%)2 (13.33%)2 (14.29%)1
ASA II13 (86.67%)12 (80.00%)10 (71.42%)0.587
ASA III0 (0%)1 (6.67%)2 (14.29%)0.302
Operation time (min)90.00 (70.00, 110.00)85.00 (65.00, 145.00)81.50 (79.50, 111.25)0.921
Type of surgery
 Wedge resection7 (46.67%)10 (66.67%)6 (42.86%)0.420
 Lobectomy3 (20.00%)4 (26.67%)4 (28.57%)0.912
 Segmentectomy4 (26.67%)0 (0%)4 (28.57%)0.087
 Others1 (6.66%)1 (6.66%)0 (0%)1
Number of ports0.566
 24 (26.67%)5 (33.33%)2 (14.29%)
 311 (73.33%)10 (66.67%)12 (85.71%)
Duration of chest drain (days)4 (3, 5)4 (3, 6)3.5 (3, 4.5)0.426

There were no significant differences in demographic and surgical data among the three groups. Numerical data were presented as numbers (percentages). Variables with a normal distribution were presented as mean ± standard deviation (SD). Variables with a skewed distribution were presented as median (quartiles). BMI: body mass index, ASA: anesthesiologists’ physical class.