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A comparison of pulmonary function tests for postthoracotomy pain using cryoanalgesia and transcutaneous nerve stimulation
Rooney SM, Jain S, McCormack P, Bains MS, Martini N, Goldiner PL
The Annals of Thoracic Surgery 1986 Feb;41(2):204-207
clinical trial
5/10 [Eligibility criteria: No; Random allocation: Yes; Concealed allocation: No; Baseline comparability: No; Blind subjects: Yes; Blind therapists: No; Blind assessors: No; Adequate follow-up: Yes; Intention-to-treat analysis: No; Between-group comparisons: Yes; Point estimates and variability: Yes. Note: Eligibility criteria item does not contribute to total score] *This score has been confirmed*

The beneficial effects of transcutaneous nerve stimulation (TNS) and cryoanalgesia for post-thoracotomy pain were compared against each other and against a control group through pulmonary function testing in the immediate and delayed postoperative period. Patients receiving cryoanalgesia did not perform well in the first 24 hours after operation. However, by the fifth postoperative day, they did as well as or even better than the TNS patients. Both cryoanalgesia and TNS were significantly effective in the management of postoperative pain as compared with controls.
With permission from Excerpta Medica Inc.

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