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      Scales for the assessment of pain in the intensive care unit. Systematic review Translated title: Escalas para a avaliação da dor na unidade de terapia intensiva. Revisão sistemática

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          Abstract

          ABSTRACT BACKGROUND AND OBJECTIVES: Pain is an unpleasant sensory and emotional experience associated with actual or potential tissue damage or described in terms of such damage. Thus, pain is difficult to evaluate, especially in patients undergoing mechanical ventilation in an intensive care unit. However, there are several instruments to assess these patients’ pain. Thus, the aims of the present study were described and characterize the psychometric characteristics of the intensive care unit pain assessment scales. CONTENTS: A systematic review in the electronic databases of Pubmed, LILACS, Cochrane Library and Scielo was performed, without time restrictions. The focus of this evidence synthesis is to examine the validity, reproducibility, and responsiveness of intensive care unit pain scales. 58 studies were included. Cronbach alpha ranged from 0.31 to 0.96 and the intraclass correlation coefficient from 0.25 to 1.00. A cross-cultural adaptation was performed in 28 studies for use in language Portuguese (Brazil), Chinese, Italian, Swedish, Portuguese (Portugal), English, Dutch, Turkish, Persian, Danish, Polish, Spanish and Greek. CONCLUSION: Among the available scales to measure pain in non-responsive patients, the data is not enough to indicate the superiority between them. In Brazil, most studies demonstrated that the pain scales had satisfactory validity, reliability, and reproducibility rates. Thus, when deciding which scale to use, the convenience of application and familiarity of the team should be considered.

          Translated abstract

          RESUMO JUSTIFICATIVA E OBJETIVOS: A dor é considerada como uma experiência sensorial e emocional desagradável, associada a uma lesão efetiva ou potencial dos tecidos. Avaliar a dor é muito complexo, principalmente quando se trata de pacientes ventilados mecanicamente na unidade de terapia intensiva. No entanto, existem diversas escalas para avaliam a dor desses pacientes. Dessa forma, este estudo teve como objetivo sumarizar dados acerca das características psicométricas das escalas de avaliação de dor na unidade de terapia intensiva. CONTEÚDO: Foi realizada uma revisão sistemática através da pesquisa nas bases de dados Pubmed, LILACS, Cochrane Library e SciELO, foram incluídos os estudos que verificaram a confiabilidade, a validade, reprodutibilidade e a capacidade de resposta das escalas de avaliação de dor na unidade de terapia intensiva. Dos 58 estudos incluídos, o alfa de Cronbach variou de 0,31 a 0,96 e o coeficiente de correlação intraclasse variou de 0,25 a 1,00. Houve adaptação transcultural de 28 estudos nas versões brasileira, chinesa, italiana, sueca, portuguesa, inglesa, holandesa, turca, persa, dinamarquesa, polonesa, espanhola e grega. CONCLUSÃO: Os estudos publicados até o momento demonstraram uma lacuna para indicar a superioridade entre as escalas que avaliam dor em pacientes em ventilação mecânica. No Brasil, a maior parte dos estudos ressaltou que as escalas de avaliação da dor apresentam índices de validade, confiabilidade e reprodutibilidade satisfatórios. Assim, a decisão entre a escala a ser utilizada deve considerar facilidade de aplicação e a familiaridade da equipe.

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          Assessing pain in critically ill sedated patients by using a behavioral pain scale.

          To establish the validity and reliability of a new behavioral pain scale (BPS) for critically ill sedated adult patients. Prospective evaluation. Ten-bed trauma and surgical intensive care unit in a university teaching hospital. Thirty mechanically ventilated patients who were receiving analgesia and sedation. Assessments with the BPS were completed consecutively at standardized times (morning, afternoon, night) by pairs of evaluators (nurse and nurse's aide). They collected physiologic parameters and BPS results before and during care procedures: non-nociceptive (group 1, compression stockings application and central venous catheter dressing change), nociceptive (group 2, endotracheal suctioning and mobilization), and retested nociceptive (group 3). The BPS score was the sum of three items that had a range score of 1-4: facial expression, movements of upper limbs, and compliance with mechanical ventilation. Two hundred and sixty nine assessments were completed, including 104, 134, and 31 measurements in groups 1, 2 and 3, respectively. There was no difference in Ramsay scale scores between the three groups (Ramsay 4-6). Nociceptive stimulations (group 2) resulted in significantly higher BPS values than non-nociceptive ones (group 1, 4.9 vs. 3.5, p <.01), whereas the two groups had comparable BPS values before stimulation (3.1 vs. 3.0). A trend was found in group 2 between the dosage of sedation/analgesia and BPS: the higher the dosage, the lower BPS values and BPS changes to nociceptive stimulation. Group 3 had BPS values similar to group 2 at rest (3.2 vs. 3.2) and during the procedure (4.4 vs. 4.5), with good interrater correlations (r(2) =.71 and.50, respectively). These results indicate that the expression of pain can be scored validly and reliably by using the BPS in sedated, mechanically ventilated patients. Further studies are warranted regarding the utility of the BPS in making clinical decisions about the use of analgesic drugs in the intensive care unit.
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            Validation of the critical-care pain observation tool in adult patients.

            Little research has been conducted to validate pain assessment tools in critical care, especially for patients who cannot communicate verbally. To validate the Critical-Care Pain Observation Tool. A total of 105 cardiac surgery patients in the intensive care unit, recruited in a cardiology health center in Quebec, Canada, participated in the study. Following surgery, 33 of the 105 were evaluated while unconscious and intubated and 99 while conscious and intubated; all 105 were evaluated after extubation. For each of the 3 testing periods, patients were evaluated by using the Critical-Care Pain Observation Tool at rest, during a nociceptive procedure (positioning), and 20 minutes after the procedure, for a total of 9 assessments. Each patient's self-report of pain was obtained while the patient was conscious and intubated and after extubation. The reliability and validity of the Critical-Care Pain Observation Tool were acceptable. Interrater reliability was supported by moderate to high weighted kappa coefficients. For criterion validity, significant associations were found between the patients' self-reports of pain and the scores on the Critical-Care Pain Observation Tool. Discriminant validity was supported by higher scores during positioning (a nociceptive procedure) versus at rest. The Critical-Care Pain Observation Tool showed that no matter their level of consciousness, critically ill adult patients react to a noxious stimulus by expressing different behaviors that may be associated with pain. Therefore, the tool could be used to assess the effect of various measures for the management of pain.
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              Protocolized intensive care unit management of analgesia, sedation, and delirium improves analgesia and subsyndromal delirium rates.

              Sedatives and analgesics, in doses that alter consciousness in the intensive care unit (ICU), contribute to delirium and mortality. Pain, agitation, and delirium can be monitored in ICU patients. These symptoms were noted before (PRE) and after (POST) a protocol to alleviate undesirable symptoms. Analgesia and sedation levels, the incidence of coma, delirium, length of stay (LOS), discharge location, and mortality were then compared. We hypothesized that the likely reduction in iatrogenic coma would result in less delirium, because these 2 morbid conditions seem to be linked. All patients were consecutively admitted to an ICU PRE-protocol (August 2003 to February 2004, 610 patients) and POST-protocol (April 2005 to November 2005, 604 patients). Between February 2004 and April 2005, we piloted and taught individualized nonpharmacologic strategies and titration of analgesics, sedatives, and antipsychotics based on sedation, analgesia, and delirium scores. We measured the following outcomes: coma, delirium, LOS, mortality, and discharge location. The POST group benefited from better analgesia, received less opiates (90.72 + or - 207.45 vs 22.93 + or - 40.36 morphine equivalents/d, P = <0.0001), and, despite comparable sedation, had shorter duration of mechanical ventilation. Medication-induced coma rates (18.1%vs 7.2%, P < 0.0001), ICU and hospital LOS, and dependency at discharge were lower in the POST-protocol group. Subsyndromal delirium was significantly reduced; delirium was similar. The 30-day mortality risk in the PRE cohort was 29.4% vs 22.9% in the POST cohort (log-rank test, P = 0.009). Educational initiatives incorporating systematic management protocols with nonpharmacologic measures and individualized titration of sedation, analgesia, and delirium therapies are associated with better outcomes.
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                Author and article information

                Journal
                brjp
                BrJP
                BrJP
                Sociedade Brasileira para o Estudo da Dor (São Paulo, SP, Brazil )
                2595-0118
                2595-3192
                September 2020
                : 3
                : 3
                : 263-274
                Affiliations
                [1] Salvador BA orgnameCentro Universitário Social da Bahia orgdiv1Pós-Graduação em Fisioterapia Hospitalar em Unidade de Terapia Intensiva Brasil
                Article
                S2595-31922020000300263 S2595-3192(20)00300300263
                10.5935/2595-0118.20200043
                8afb8e1f-11f1-4ca6-8578-c594173d1453

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                : 24 May 2020
                : 03 April 2020
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 78, Pages: 12
                Categories
                Review Articles

                Cuidados críticos,Pain measurement,Intensive care units,Critical care,Unidade de terapia intensiva,Reprodutibilidade dos testes,Medição da dor,Reproducibility of results

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