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ABSTRACT Objective: To evaluate the focus of pediatricians' gaze during the heel prick of neonates. Methods: Prospective study in which pediatricians wearing eye tracker glasses evaluated neonatal pain before/after a heel prtick. Pediatricians scored the pain they perceived in the neonate in a verbal analogue numerical scale (0=no pain; 10=maximum pain). The outcomes measured were number and time of visual fixations in upper face, lower face, and hands, in two 10-second periods, before (pre) and after the puncture (post). These outcomes were compared between the periods, and according to pediatricians' pain perception: absent/mild (score: 0-5) and moderate/intense (score: 6-10). Results: 24 pediatricians (31 years old, 92% female) evaluated 24 neonates. The median score attributed to neonatal pain during the heel prick was 7.0 (Interquartile range: 5-8). Compared to pre-, in the post-periods, more pediatricians fixed their gaze on the lower face (63 vs. 92%; p=0.036) and the number of visual fixations was greater on the lower face (2.0 vs. 5.0; p=0.018). There was no difference in the number and time of visual fixations according to the intensity of pain. Conclusions: At bedside, pediatricians change their focus of attention on the neonatal face after a painful procedure, focusing mainly on the lower part of the face.
RESUMO Objetivo: Avaliar o foco do olhar do pediatra durante a punção do calcanhar de neonatos. Métodos: Estudo prospectivo no qual pediatras, utilizando óculos de rastreamento visual, avaliaram a dor neonatal antes/depois de uma punção de calcanhar. Os pediatras pontuaram a dor de acordo com a sua percepção por meio de uma escala analógica verbal (0=sem dor; 10=dor máxima). Os desfechos analisados foram o número e o tempo das fixações visuais na face superior, face inferior e mãos, em dois períodos de 10 segundos, antes (PRÉ) e depois da punção (PÓS). Os resultados foram comparados entre os períodos e segundo a percepção da dor do pediatra: ausente/leve (escore: 0-5) e moderada/grave (escore: 6-10). Resultados: Vinte e quatro pediatras (31 anos, 92% sexo feminino) avaliaram 24 neonatos. A mediana do escore atribuído à dor do recém-nascido durante a punção do calcanhar foi 7,0 (intervalo interquartil: 5-8). Comparado ao período PRÉ, no período PÓS, o maior número de pediatras fixou o olhar na face inferior (63 vs. 92%; p=0,036) e o número de fixações visuais foi maior na face inferior (2,0 vs. 5,0; p=0,018). Não houve diferença no número e no tempo das fixações visuais de acordo com a intensidade da dor. Conclusões: À beira do leito, os pediatras mudam seu foco de atenção visual na face do recém-nascido após um procedimento doloroso, focando o olhar principalmente na parte inferior da face.
ABSTRACT
Abstract Objective: To analyze the regions that trigger the attention of adults' gaze when assessing pain in newborn infants' pictures and to verify if there are differences between health and non-health professionals. Method: Experimental study with 84 health professionals and 59 non-health professionals, who evaluated two images of 10 neonates, one at rest and the other during a painful procedure. Each image was shown for 7 seconds on a computer screen, while eye movements were tracked by the Tobii TX300 EyeTracker. After evaluating each image, participants gave a score from 0 (absent pain) to 10 (maximum pain), according to their perception of neonatal pain. For each image, the number and total time of gaze fixations in the forehead, eyes, nasolabial furrow, and mouth were studied. Comparisons between both groups of adults were made by an intraclass correlation coefficient, Student's t-test, and Bland Altman graphic. Results: Health professionals (93% female; 34 ± 9 years old), compared to non-health professionals (64% female; 35 ± 11 years old), gave lower scores for images at rest (0.81 ± 0.50 vs. 1.59 ± 0.76; p = 0.010), with no difference for those obtained during the painful procedure (6.98 ± 1.08 vs. 6.73 ± 0.82). There was a strong or almost perfect correlation for the number of fixations in the mouth, eyes, forehead, and for the total fixation time in the eyes and forehead. Conclusions: Adults, irrespective of their profession, showed a homogeneous gaze pattern when evaluating pictures of neonates at rest or during a painful procedures.
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ABSTRACT BACKGROUND AND OBJECTIVES: Difficulty in neonatal assessment is a challenge for the development of pain prevention and treatment strategies. The objective of this study was to analyze the agreement among health professionals in the identification of facial pain movements in images of neonates submitted or not to a painful procedure and to evaluate the discriminatory capacity of these facial movements regarding the presence of pain. METHODS: Cross-sectional study. Six health professionals trained in neonatal pain assessment evaluated 30 images of newborns undergoing a painful procedure and 30 images of the same newborns at rest, without pain. Each professional evaluated five facial movements that are part of the Neonatal Facial Coding System. Sensitivity, specificity, and positive and negative predictive values were determined. Agreement among professionals was assessed using the kappa coefficient. RESULTS: The six observers correctly assessed 94±9% of the images obtained at rest as absence of pain and 88±28% of the images obtained during the painful procedure as presence of pain. Protruding forehead, narrowed eyelid cleft, deepened nasolabial furrow, and open mouth showed high sensitivity, specificity, and positive and negative predictive values in the diagnosis of pain, with values between 78-90%. The inter-observer agreement for all 60 images showed a kappa coefficient of 0.60 (95%CI 0.55-0.66). CONCLUSION: The evaluation of the forehead, eyelid, nasolabial furrow and mouth of newborns showed high sensitivity and specificity to discriminate the presence and absence of pain in static images. The agreement between the evaluators in identifying facial movements related to the expression of pain in newborns was moderate.
RESUMO JUSTIFICATIVA E OBJETIVOS: A dificuldade na avaliação da dor do recém-nascido é um desafio para o desenvolvimento de estratégias de prevenção e tratamento da dor. O objetivo deste estudo foi analisar a concordância entre profissionais de saúde na identificação de movimentos faciais de dor em imagens de recém-nascidos submetidos ou não a um procedimento doloroso e a capacidade discriminatória quanto à presença de dor desses movimentos faciais. MÉTODOS: Estudo transversal. Seis profissionais de saúde treinados na avaliação da dor neonatal avaliaram 30 imagens de recém-nascidos submetidos a um procedimento doloroso e 30 imagens em repouso dos mesmos recém-nascidos, sem dor. Cada profissional avaliou cinco movimentos faciais que fazem parte do Sistema de Codificação Facial Neonatal. Sensibilidade, especificidade e valores preditivos positivos e negativos foram determinados. A concordância interavaliadores foi avaliada pelo coeficiente kappa. RESULTADOS: Os seis observadores avaliaram corretamente 94±9% das imagens obtidas em repouso como ausência de dor e 88±28% das imagens obtidas durante o procedimento doloroso como presença de dor. Fronte saliente, fenda palpebral estreitada, sulco nasolabial aprofundado e boca aberta mostraram alta sensibilidade, especificidade e valores preditivos positivo e negativo no diagnóstico de dor, com valores entre 78 e 90%. A concordância interavaliadores para todas as 60 imagens mostrou um kappa 0,60 (IC95%0,55-0,66). CONCLUSÃO: A avaliação da fronte, pálpebra, sulco nasolabial e boca de recém-nascidos mostrou alta sensibilidade e especificidade para discriminar a presença e ausência de dor em imagens estáticas. A concordância interavaliadores na identificação de movimentos faciais relacionados à expressão da dor em recém- -nascidos foi moderada.