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Table 1 Patient characteristics. Data are expressed as the mean (SD) or number of patients (%) in each group

From: Infrared thermography for assessment of thoracic paravertebral block: a prospective observational study

  Successful TPVB Failed TPVB
Simple size, n 54 7
Sociodemographic Charactertics
 Sex, n (%)
  Male 21 (40.4) 5 (57.1)
  Female 33 (61.1) 2 (42.9)
Mean Age (SD) in years 55 (10) 49 (16)
Mean BMI (SD) in kg/m2 23 (3) 24 (1)
Surgical Charactertics
 Block side, n (%)
  Left 21 (38.9) 3 (42.9)
  Right 33 (61.1) 4 (57.1)
 ASA status (I ~ II), n (%)
  ASA I 23 (42.6) 3 (42.9)
  ASA II 31 (57.4) 4 (57.1)
 Surgery, n (%)
  Mastectomy 7 (13.0) 1 (14.3)
  Mastectomy + ALND 4 (7.4) 1 (14.3)
  Lung lobectomy 36 (66.7) 3 (42.6)
  Lung wedge resection 9 (16.7) 2 (28.6)
  1. Abbreviations: SD standard deviation, BMI Body mass index, ASA American Society of Anesthesiologists