[Total shoulder arthroplasty with interscalene block. Feasibility study].
BACKGROUND
General anesthesia is considered as the technique of choice for shoulder surgery, either alone or combined. We propose to show the feasibility of using guided interscalene block as the single anesthetic technique for total shoulder arthroplasty.


METHODS
Neurostimulation-guided interscalene block plus sedation with dexmedetomidine were used. The following were measured intraoperatively: latency time, intraoperative analgesia, motor block according to Monzo's scale, success rate, adverse events and complications. The following were measured postoperatively: duration of postoperative analgesia and pain intensity with a visual analogue scale at 6, 12 and 24 hours. Patient satisfaction was also measured.


RESULTS
Intraoperative analgesia was appropriate in 100% of patients. Motor block was grade 0 in 76.4% and grade 1 in 23.6%, which is appropriate for surgery. The success rate was 100%. Mean postoperative pain at 6 hours was 0.13 +/- 0.54 points in the visual analogue scale; 1.67 +/- 1.15 at 12 hours, and 3.15 +/- 1.66 points at 24 hours. 54.5% of patients were very satisfied and 45.5% were satisfied. Complications occurred in 8.18%.


CONCLUSIONS
This type of surgery is feasible with interscalene block plus sedation; it is a safe and efficacious technique.
G E
GE
Mejía-Terrazas
M
M
Ruiz-Suárez
I M
IM
Encalada-Díaz
S P
SP
Gaspar-Carrillo
F
F
Valero-González
A A
AA
Peña-Riveron
D001178:Arthroplasty; D005240:Feasibility Studies; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009407:Nerve Block / Q000379:methods*; D011446:Prospective Studies; D012785:Shoulder Joint / Q000601:surgery*