• Marie-Eva Pickering, Pal Bunna, Patrice Rat, Guylène Madeline, Céline Lebost, Alain Serrie, and Bruno Pereira.
• The Non-Governmental Organisation "Pain without frontiers", Phnom Penh, Cambodia; Hospices Civils, Lyon, France.
• Pain Med. 2013 Dec 1; 14 (12): 197119761971-6.

ObjectiveEvaluation of acute pain in patients with language barriers is often difficult during humanitarian missions. Algoplus, a behavioral scale validated for acute pain evaluation in Caucasians with verbal communication difficulties, was tested during a clinical mission in Cambodia in patients admitted to hospital for acute pain.MethodsPatients (N = 33, 19 men and 14 women [38 ± 3 years old]) suffering from acute pain were admitted to Calmette Hospital, Phnom Penh, Cambodia during June 2010. Patients spoke Khmer only; a medical trainee who did no speak Khmer performed the Algoplus scale, and a bilingual Khmer pain specialist doctor asked the patient to score pain intensity on a numerical scale (0-10). The relevance of the scale and of each item (facial expression, complaints, look, body position, and atypical behavior yes/no) was studied. Internal consistency was assessed by Cronbach alpha analysis and convergent validity by correlation coefficient. The relationship between Algoplus items and pain intensity was analysed.ResultsPain intensity (6.3 ± 2.2) and Algoplus scores (2.1 ± 1.2) are correlated (r = 0.61, P < 0.001): increases in Algoplus are correlated to increases in pain intensity. Internal consistency is 0.51, and scales comparison per item is significant for facial expression (P = 0.028) and complaints (P = 0.005), but not for the other items.ConclusionThis feasibility study shows that despite a correlation with pain intensity, Algoplus may underestimate acute pain in this population. It is, however, an interesting tool for future studies to explore facial expression and complaints as proxies of pain in non-communicative patients.Wiley Periodicals, Inc.

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