Dolor en niños/Pain in children

Septiembre 22, 2015. No. 2093
Anestesia y Medicina del Dolor

Efectos de la música perioperatoria en intervenciones pediátricas
The Effects of Perioperative Music Interventions in Pediatric Surgery: A Systematic Review and Meta-Analysis of Randomized Controlled Trials.
PLoS One. 2015 Aug 6;10(8):e0133608. doi: 10.1371/journal.pone.0133608. eCollection 2015.
OBJECTIVE: Music interventions are widely used, but have not yet gained a place in guidelines for pediatric surgery or pediatric anesthesia. In this systematic review and meta-analysis we examined the effects of music interventions on pain, anxiety and distress in children undergoing invasive surgery. DATA SOURCES: We searched 25 electronic databases from their first available date until October 2014. STUDY SELECTION: Included were all randomized controlled trials with a parallel group, crossover or cluster design that included pediatric patients from 1 month to 18 years old undergoing minimally invasive or invasive surgical procedures, and receiving either live music therapy or recorded music. DATA EXTRACTION AND SYNTHESIS: 4846 records were retrieved from the searches, 26 full text reports were evaluated and data was extracted by two independent investigators. MAIN OUTCOME MEASURES: Pain was measured with the Visual Analogue Scale, the Coloured Analogue Scale and the Facial Pain Scale. Anxiety and distress were measured with an emotional index scale (not validated), the Spielberger short State Trait Anxiety Inventory and a Facial Affective Scale. RESULTS:
Three RCTs were eligible for inclusion encompassing 196 orthopedic, cardiac and day surgery patients (age of 1 day to 18 years) receiving either live music therapy or recorded music. Overall a statistically significant positive effect was demonstrated on postoperative pain (SMD -1.07; 95%CI-2.08; -0.07) and on anxiety and distress (SMD -0.34 95% CI -0.66; -0.01 and SMD -0.50; 95% CI -0.84; – 0.16. CONCLUSIONS AND RELEVANCE: This systematic review and meta-analysis indicates that music interventions may have a statistically significant effect in reducing post-operative pain, anxiety and distress in children undergoing a surgical procedure. Evidence from this review and other reviews suggests music therapy may be considered for clinical use.
Paracetamol (acetaminofen) en la prevención o tratamiento del dolor en recién nacidos
Paracetamol (acetaminophen) for prevention or treatment of pain in newborns.
Cochrane Database Syst Rev. 2015 Jun 25;6:CD011219. doi:
BACKGROUND: Newborn infants have the ability to experience pain. Newborns treated in neonatal intensive care units are exposed to numerous painful procedures. Healthy newborns are exposed to pain if the birth process consists of assisted vaginal birth by vacuum extraction or by forceps and during blood sampling for newborn screening tests. OBJECTIVES: Primary objectiveTo determine the efficacy and safety of paracetamol for the prevention or treatment of procedural/postoperative pain or pain associated with clinical conditions in neonates. Secondary objectiveTo review the effects of various doses and routes of administration (enteral, intravenous or rectal) of paracetamol for the prevention or treatment of pain in neonates. We designed the main comparisons according to intention of use, that is, paracetamol for prevention or treatment of pain. We included separate comparisons based on the painful intervention/procedure/condition (heel lance, insertion of nasogastric tube, insertion of intravenous catheter, lumbar puncture, assisted vaginal birth, postoperative pain, birth trauma, congenital anomalies such as myelomeningocoele and open cutaneous lesions) and the mode of administration of paracetamol. Within these comparisons, we planned to assess in subgroups (when possible) effects based on postmenstrual age (PMA) at the birth of randomly assigned infants (< 28 weeks, 28 weeks to 31 + 6 weeks, 32 weeks to 36 + 6 weeks and ≥ 37 weeks) or based on birth weight (or current weight) categories (≤ 1000 grams, 1001 to 1500 grams, 1501 to 2500 grams and ≥ 2501 grams) SEARCH METHODS: We used the standard search strategy of the Cochrane Neonatal Review Group including electronic searches of the Cochrane Central Register of Controlled Trials (CENTRAL) (October 2014), MEDLINE (1966 to October 2014), EMBASE (1980 to October 2014) and the Cumulative Index to Nursing and Allied Health Literature (CINAHL) (1982 to October 2014). We applied no language restrictions.We conducted electronic searches of abstracts from meetings of the Pediatric Academic Societies (2000 to 2014) and the Perinatal Society of Australia and New Zealand (2010 to 2014).We searched clinical trial registries for ongoing trials and the Web of Science for articles quoting identified randomised controlled trials. We searched the first 200 hits on Google Scholar(TM) to identify grey literature. SELECTION CRITERIA: We included randomised and quasi-randomised controlled trials of paracetamol for the prevention or treatment of pain in neonates (≤ 30 days of age). DATA COLLECTION AND ANALYSIS: Two review authors independently extracted data from the full-text articles using a specifically designed form. We used this form to decide trial inclusion/exclusion, to extract data from eligible trials and to request additional published information from authors of the original reports. We entered and cross-checked data using RevMan 5.3.3 software. When noted, we resolved differences by mutual discussion and consensus. MAIN RESULTS: We included eight trials with low risk of bias, which assessed paracetamol use for the treatment of pain in 614 infants. Painful interventions studied included heel lance, assisted vaginal birth, eye examination for ascertainment of retinopathy of prematurity (ROP) and postoperative care following major surgery. Results of individual studies could not be combined in meta-analyses as the painful conditions, the use of paracetamol and comparison interventions and the outcome measures differed. Paracetamol compared with water, cherry elixir or EMLA cream did not significantly reduce pain following heel lance. The Premature Infant Pain Profile score (PIPP) within three minutes following lancing was higher in the paracetamol group than in the oral glucose group (mean difference (MD) 2.21, 95% confidence interval (CI) 0.72 to 3.70; one study, 38 infants). Paracetamol did not reduce “modified facies scores” after assisted vaginal birth (one study, 119 infants). In another study (n = 123), the Échelle de Douleur et d’Inconfort du Nouveau-Né score at two hours of age was significantly higher in the group that received paracetamol suppositories than in the placebo suppositories group (MD 1.00, 95% CI 0.60 to 1.40). In that study, when infants were subjected to a heel lance at two to three days of age, Bernese Pain Scale for Neonates scores were higher in the paracetamol group than in the placebo group, and infants spent a longer time crying (MD 19 seconds, 95% CI 14 to 24). For eye examinations, no significant reduction in PIPP scores in the first or last 45 seconds of eye examination was reported, nor at five minutes after the eye examination. In one study (n = 81), the PIPP score was significantly higher in the paracetamol group than in the 24% sucrose group (MD 3.90, 95% CI 2.92 to 4.88). For postoperative care following major thoracic or abdominal surgery, the total amount of morphine (µg/kg) administered over 48 hours was significantly less among infants randomly assigned to the paracetamol group than in those randomly assigned to the morphine group (MD -157 µg/kg, 95% CI -27 to -288). No adverse events were noted in any study.
Paracetamol does not significantly reduce pain associated with heel lance or eye examinations. Paracetamol given after assisted vaginal birth may increase the response to later painful exposures. Paracetamol should not be used for painful procedures given its lack of efficacy and its potential for adverse effects. Paracetamol may reduce the total need for morphine following major surgery, and for this aspect of paracetamol use, further research is needed.
Reactividad al dolor en recién nacido de pretérmino: examinando las diferencias sexuales
Pain reactivity in preterm neonates: examining the sex differences.
Eur J Pain. 2014 Nov;18(10):1431-9. doi: 10.1002/ejp.508. Epub 2014 Apr 15.
BACKGROUND: Early and repeated experiences of pain may have long-term effects on vulnerable newborns hospitalized in the Neonatal Intensive Care Unit (NICU), and neonatal pain responses may be affected by a variety of factors that neonates encounter. We tested the hypothesis that male preterm neonates exhibited greater pain sensitivity than females by assessing biobehavioural pain reactivity and recovery patterns to painful procedure. METHODS: Fifty-three infants born preterm and low birthweight who were admitted to NICU were observed during five phases (baseline, antisepsis, puncture, recovery-dressing and recovery-resting). Behavioural pain reactivity was measured using the Neonatal Facial Coding System (NFCS) and the Sleep-Wake States Scale (SWS). The heart rate (HR) was continuously recorded. All measures were assessed based on scores and magnitude of responses. RESULTS: We found that male and female preterm neonates had similar patterns of behavioural pain reactivity and recovery; there were no statistical differences between groups in NFCS and SWS scores. However, male preterm infants presented higher HR immediately in the first minute of the puncture phase and also higher change in maximum HR between the baseline and puncture phases, than female preterm infants. CONCLUSION: Although we found that male infants showed higher physiological reactivity to painful stimulus in some HR parameters than female infants, the evidences were not sufficient to confirm the influence of sex on biobehavioural response to pain in vulnerable neonates.
Modulo CEEA Leon, Gto. 

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