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      Identification of pain-related psychological risk factors for the development and maintenance of pediatric chronic postsurgical pain

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          Abstract

          Background

          The goals of this study were to examine the trajectory of pediatric chronic postsurgical pain (CPSP) over the first year after surgery and to identify acute postsurgical predictors of CPSP.

          Methods

          Eighty-three children aged 8–18 years (mean 13.8, standard deviation 2.4) who underwent major orthopedic or general surgery completed pain and pain-related psychological measures at 48–72 hours, 2 weeks (pain anxiety and pain measures only), and 6 and 12 months after surgery.

          Results

          Results showed that 1 year after surgery, 22% of children developed moderate to severe CPSP with minimal functional disability. Children who reported a Numeric Rating Scale pain-intensity score ≥ 3 out of 10 two weeks after discharge were more than three times as likely to develop moderate/severe CPSP at 6 months and more than twice as likely to develop moderate/severe CPSP at 12 months than those who reported a Numeric Rating Scale pain score < 3 (6-month relative risk 3.3, 95% confidence interval 1.2–9.0 and 12-month relative risk 2.5, 95% confidence interval 0.9–7.5). Pain unpleasantness predicted the transition from acute to moderate/severe CPSP, whereas anxiety sensitivity predicted the maintenance of moderate/severe CPSP from 6 to 12 months after surgery.

          Conclusions

          This study highlights the prevalence of pediatric CPSP and the role played by psychological variables in its development/maintenance. Risk factors that are associated with the development of CPSP are different from those that maintain it.

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          Most cited references 52

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          Fear of movement/(re)injury in chronic low back pain and its relation to behavioral performance.

          Two studies are presented that investigated 'fear of movement/(re)injury' in chronic musculoskeletal pain and its relation to behavioral performance. The 1st study examines the relation among fear of movement/(re)injury (as measured with the Dutch version of the Tampa Scale for Kinesiophobia (TSK-DV)) (Kori et al. 1990), biographical variables (age, pain duration, gender, use of supportive equipment, compensation status), pain-related variables (pain intensity, pain cognitions, pain coping) and affective distress (fear and depression) in a group of 103 chronic low back pain (CLBP) patients. In the 2nd study, motoric, psychophysiologic and self-report measures of fear are taken from 33 CLBP patients who are exposed to a single and relatively simple movement. Generally, findings demonstrated that the fear of movement/(re)injury is related to gender and compensation status, and more closely to measures of catastrophizing and depression, but in a much lesser degree to pain coping and pain intensity. Furthermore, subjects who report a high degree of fear of movement/(re)injury show more fear and escape/avoidance when exposed to a simple movement. The discussion focuses on the clinical relevance of the construct of fear of movement/(re)injury and research questions that remain to be answered.
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            The Pain Anxiety Symptoms Scale: development and validation of a scale to measure fear of pain.

            Fear of pain has been implicated in the development and maintenance of chronic pain behavior. Consistent with conceptualizations of anxiety as occurring within three response modes, this paper introduces an instrument to measure fear of pain across cognitive, overt behavioral, and physiological domains. The Pain Anxiety Symptoms Scale (PASS) was administered to 104 consecutive referrals to a multidisciplinary pain clinic. The alpha coefficients were 0.94 for the total scale and ranged from 0.81 to 0.89 for the subscales. Validity was supported by significant correlations with measures of anxiety and disability. Regression analyses controlling for measures of emotional distress and pain showed that the PASS made a significant and unique contribution to the prediction of disability and interference due to pain. Evidence presented here supports the potential utility of the PASS in the continued study of fear of pain and its contribution to the development and maintenance of pain behaviors. Factor analysis and behavioral validation studies are in progress.
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              The child version of the pain catastrophizing scale (PCS-C): a preliminary validation.

              Catastrophizing about pain has emerged as a critical variable in how we understand adjustment to pain in both adults and children. In children, however, current methods of measuring catastrophizing about pain rely on brief subscales of larger coping inventories. Therefore, we adapted the Pain Catastrophizing Scale (Sullivan et al., 1995) for use in children, and investigated its construct and predictive validity in two studies. Study 1 revealed that in a community sample (400 boys, 414 girls; age range between 8 years 9 months and 16 years 5 months) the Pain Catastrophizing Scale for Children (PCS-C) assesses the independent but strongly related dimensions of rumination, magnification and helplessness that are subsumed under the higher-order construct of pain catastrophizing. This three factor structure is invariant across age groups and gender. Study 2 revealed in a clinical sample of children with chronic or recurrent pain (23 girls, 20 boys; age range between 8 years 3 months and 16 years 6 months) that catastrophizing about pain had a unique contribution in predicting pain intensity beyond gender and age, and in predicting disability, beyond gender, age and pain intensity. The function of pain catastrophizing is discussed in terms of the facilitation of escape from pain, and of the communication of distress to significant others.
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                Author and article information

                Journal
                J Pain Res
                J Pain Res
                Journal of Pain Research
                Dove Medical Press
                1178-7090
                2013
                05 March 2013
                : 6
                : 167-180
                Affiliations
                [1 ]Department of Psychology, York University, Toronto, ON, Canada
                [2 ]Department of Anesthesia and Pain Medicine, Hospital for Sick Children, Toronto, ON, Canada
                [3 ]Lawrence S Bloomberg Faculty of Nursing, Toronto, ON, Canada
                [4 ]Department of Anesthesia, University of Toronto, Toronto, ON, Canada
                [5 ]Department of Psychology, Hospital for Sick Children, Toronto, ON, Canada
                Author notes
                Correspondence: Joel Katz Department of Psychology, BSB 232, York University, 4700 Keele Street, Toronto, ON M3J 1P3, Canada Tel +1 416 736 2100 ext 40557 Email jkatz@ 123456yorku.ca
                Article
                jpr-6-167
                10.2147/JPR.S40846
                3594915
                23503375
                © 2013 Pagé et al, publisher and licensee Dove Medical Press Ltd

                This is an Open Access article which permits unrestricted noncommercial use, provided the original work is properly cited.

                Categories
                Original Research

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