All 4 faces pain scales were found to be adequately supported by psychometric data .
When given a choice between faces scales , children preferred the WBFPRS .
Confounding of pain intensity with affect caused by use of smiling and crying anchor faces is a disadvantage of the WBFPRS .
: For clinical use , we found no grounds to switch from 1 faces scale to another when 1 of the scales is in use .
CONTEXT : Numerous faces scales have been developed for the measurement of  pain intensity in children .
It remains unclear whether any one of the faces scales is better for a particular purpose with regard to validity , reliability , feasibility , and preference .
OBJECTIVES : To summarize and systematic ally review faces pain scales most commonly used to obtain self-report of pain intensity in children for evaluation of reliability and validity and to compare the scales for preference and utility .
Ropivacaine Peritonsillar Infiltration for Analgesia after Adenotonsillectomy in Children: A Randomized, Double-Blind, Placebo-Controlled Study
Objectives : Our r and omized , double-blind , placebo-controlled study evaluates the possible benefit of peritonsillar infiltration with 0.75 % ropivacaine hydrochloride on the pain level after adenotonsillectomy in 3- to 7-year-old children . Methods : We r and omly administered intraoperative peritonsillar infiltration with 0.2 mL/kg ropivacaine 0.75 % ( group R ) or 0.2 mL/kg saline 0.9 % ( group F ) to sixty 3- to 7-year-old children ( ASA 1 or 2 ) who were undergoing adenotonsillectomy .  Postoperative pain was assessed 6 and 24 hours after surgery by a 6-face Faces Pain Scale that allowed quantification of pain on a 100-mm horizontal line ( 0 = no pain ) . The number of rectal doses of acetaminophen-codeine required during the first postoperative day was recorded . Results : The pain scores did not differ between the groups , either 6 or 24 hours after surgery ( group F , 43 ± 26 , versus group R , 29 ± 23 , and group F , 24 ± 23 , versus group R , 30 ± 28 , respectively ) . Acetaminophen-codeine doses were similarly required in the two groups . Conclusions : Peritonsillar infiltration with 0.75 % ropivacaine does not provide any major postoperative analgesic effect in 3- to 7-year-old children after adenotonsillectomy . A possible clinical ly minor analgesia 6 hours after surgery is suggested
All 4 faces pain scales were found to be adequately supported by psychometric data .
When given a choice between faces scales , children preferred the WBFPRS .
Confounding of pain intensity with affect caused by use of smiling and crying anchor faces is a disadvantage of the WBFPRS .
: For clinical use , we found no grounds to switch from 1 faces scale to another when 1 of the scales is in use .
CONTEXT : Numerous faces scales have been developed for the measurement of  pain intensity in children .
It remains unclear whether any one of the faces scales is better for a particular purpose with regard to validity , reliability , feasibility , and preference .
OBJECTIVES : To summarize and systematic ally review faces pain scales most commonly used to obtain self-report of pain intensity in children for evaluation of reliability and validity and to compare the scales for preference and utility .