ABSTRACT
Objective To investigate the analgesia effects of ultrasound-guided suprascapular nerve blocks for shoulder arthroscopy without impacting respiratory function.Methods Forty seven patients scheduled for shoulder arthroscopy,17 males and 30 females,aged 26-78 years,weighing 50-75 kg,ASA physical status Ⅰ or Ⅱ,were randomized into suprascapular nerve blocks group (group S,n=24) and interscalene plexus blocks group (group Ⅰ,n =23).0.375％ ropivacaine 20 ml and 1 ％ lidocaine plus 1 ml of dexamethasone 5 mg.The vital capacity before and 6 h after surgery,extubation time,total PACU duration,VAS scores at awake time and 6 h,12 h,24 h after surgery,total opiods consumption,and other complications were recorded.Results The patients in group S exbuted significantly earlier than in group Ⅰ [(13.0±3.9) min vs (21.2±4.0) min,P＜0.05].The mean vital capacity 6 h after surgery significantly decreased in group Ⅰ [(2 909±502) ml vs (3 533±726) ml,P＜0.05].There were no significant differences of VAS scores or opiods consumption between the two groups.Conclusion Selective suprascapular nerve blocks can provide effective analgesia for shoulder arthroscopy without impacting the vital capacity.