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. Author manuscript; available in PMC: 2015 Mar 1.
Published in final edited form as: Reg Anesth Pain Med. 2014 Mar-Apr;39(2):89–96. doi: 10.1097/AAP.0000000000000035

Table 2.

Secondary end points. Values represent the previous 24 h from time queried, unless otherwise indicated.

Perineural Infusion: Ropivacaine (n=30) Placebo (n=30) P-value
Pain (NRS POD 1 00:00–12:00)§ 3.6 (2.0–4.0) 3.7 (2.5–4.6) 0.183
Morphine equivalents (mg)§
 Intraoperative§ 3.0 (2.5–4.5) 2.5 (2.5–5.0) 0.752
 Recovery room§ 1.0 (0.0–2.8) 2.4 (1.0–5.5) 0.013
 POD 1 (00:00–12:00)§ 1.5 (0.0–8.5) 3.3 (1.4–10.3) 0.402
Oral opioid (oxycodone, mg)
 POD 4 10 (0–23) 10 (0–20) 0.376
 POD 8 1 (0–14) 0 (0–8) 0.840
Nausea (0–10, 10=vomiting)
 POD 1§ 0 (0-0) 0 (0–6) 0.053
 POD 4 0 (0-0) 0 (0-0) 0.277
 POD 8 0 (0-0) 0 (0-0) 0.294
Difficulty sleeping (# subjects)
 POD 1§ 9 16 0.116
 POD 4 8 8 1.000
 POD 8 10 8 0.848
 POD 28 6 6 >0.999
Awakenings due to pain (#/subject)
 POD 1§ 0 (0–1) 1 (0–3) 0.306
 POD 4 0 (0–1) 0 (0–1) 0.828
 POD 8 0 (0–2) 0 (0-0) 0.127
 POD 28 0 (0-0) 0 (0-0) 0.445

Values are reported as median (interquartile) or number of subjects, as indicated

§

During perineural infusion

NRS: Numeric Rating Scale

POD: postoperative day

Oral opioid and nausea queried exclusively on POD 4/8 and 1/4/8, respectively