Conectar
The relationship between pain and poor healing is intricate, potentially mediated by psychological stress and aberrations in inflammatory response. The purpose of this study was to examine the biopsychosocial model of pain by assessing the relationships between pain, stress, inflammation and healing in people with chronic wounds.
This was a 4-week prospective observational study to explore the relationship of pain, stress, inflammation and wound healing in a convenience sample of patients with chronic wounds in a chronic care hospital in Canada.
Only subjects over 18 with chronic wounds were recruited into the study. Chronic wounds were defined by the duration of wounds for more than 4 weeks of various aetiologies including wounds caused by pressure injuries, venous disease, arterial insufficiency, surgery or trauma and diabetic neuropathy. Participants were evaluated for pain by responding to the Brief Pain Inventory-Short Form, the McGill Pain Questionnaire-Short Form and the Leeds Assessment of Neuropathic Symptoms and Signs scale. Stress was measured by the Perceived Stress Scale (PSS). All wounds were assessed with the Pressure Ulcer Scale for Healing tool. The levels of matrix metalloproteinases were analysis by obtaining wound fluid from all participants.
A total of 32 individuals with chronic wounds participated in the study. Correlation analysis indicated pain severity was positively and significantly related to pain interference, McGill Pain Questionnaire scores, neuropathic pain and matrix metalloproteinase levels. Logistic regression was used to determine the predictors for high or low perceived stress. The only significant variable that contributed to the stress levels was BPI-I. Results suggested that participants who experienced higher levels of pain interference also had an increased odds to report high level of stress by 1.6 times controlling for all other factor in the model.
Pain is a complex biopsychosocial phenomenon affecting quality of life in people with chronic wounds. Results of this study identified a significant relationship between pain, stress and wound healing.
Wound care is a complex procedure and the related research may include many variables. Deficiencies in the sample inclusion and exclusion criteria may limit the generalizability of randomized controlled trials (RCTs) for wound patients in the real world. This study aimed to evaluate deficiencies in reporting the inclusion and exclusion criteria and the characteristics of patients in RCTs of pressure injuries (PI) therapeutic interventions. We conducted a systematic methodological review in which 40 full text RCTs of PI treatment interventions published in English, from 2008 to 2020, were identified. Data on the general characteristics of the included RCTs and data about inclusion/exclusion criteria and characteristics of patients were collected. The inclusion/exclusion criteria were categorized into five domains (definition of disease, precision, safety, ethical/legal and administrative). Study duration (in weeks) was 8.0 (quartile 1: 2.0; quartile 3: 48.0); only 5.0% of the trials mentioned race, skin colour or ethnicity, and 37.5% reported the duration of the wound. Only 9 (22.5%) studies reported the drugs that the included patients were using and 10 (25.0%) RCTs reported adverse events. The presence of the five domains was observed only in 12.5% of RCTs and only 12 (30.0%) had the precision domain. Much more research is required in systematic assessments of the external validity of trials because there is substantial disparity between the information that is provided by RCTs and the information that is required by clinicians. We concluded that there are deficiencies in reporting of data related to inclusion/exclusion criteria and characteristics of patients of RCTs assessing PI therapeutic interventions.
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