Time of Onset to Changes in Skin Condition During Exposure to Synthetic Urine: A Prospective Study.

PURPOSE: The purpose of this study was to evaluate the impact of incontinence on epithelial-moisture barrier function and the subsequent risk for incontinence-associated dermatitis by exposing healthy volunteers to a premium incontinence pad wet with synthetic urine. DESIGN: Prospective, single-group study. PARTICIPANTS AND SETTING: Thirty women 65 years or older participated in the study. Participants had healthy skin of the buttocks, perineal, and perigenital areas and were not incontinent of urine or stool. The study was conducted at a contracted clinical research facility in Southeastern United States. METHODS: Four hundred milliliters of synthetic urine was distributed across the width of a premium incontinence pad with wicking technology containing a superabsorbent polymer core. Participants laid supine for a total of 4 hours, with the wet pad under the buttocks. Skin assessments were conducted at baseline prior to contact with the wet pad, at 15 minutes, 30 minutes, and 1, 2, and 4 hours after exposure to the synthetic urine. Outcome measures were skin moisture content, cutaneous pH, transepidermal water loss (TEWL), mean coefficient of friction values (static and dynamic), and tolerability evaluations (expert clinical grader-assessed erythema and participant-assessed discomfort). RESULTS: Mean moisture content of the skin increased from 46.19 ± 22.1 to 1845.28 ± 542.7 micro-Siemens (µS) after just 15 minutes of exposure and was significantly increased at all time points compared to baseline (P < .001). Cutaneous pH increased from 5.67 ± 0.5 to 6.25 ± 0.1 after 15 minutes; pH was higher at all time points compared to baseline (P < .001). Passive transfer of water through the stratum corneum (TEWL) showed an increase from 9.02 ± 2.2 g/m/h at baseline to 16.83 ± 5.2 g/m/h at 4 hours (P < .001). There was a significant increase from baseline to 4 hours in mean coefficient of static friction (0.32 ± 0.01 vs 0.47 ± 0.03; P < .00001) as well as mean coefficient of dynamic friction (0.29 ± 0.01 vs 0.42 ± 0.02; P < .00001). There was a significant increase in erythema and an increase in participant-assessed discomfort at all time points (P < .005). CONCLUSIONS: Our findings suggest that impairment of the skin's epithelial-moisture barrier function associated with inflammation and development of incontinence-associated dermatitis begins rapidly after an incontinence event, even with the use of a premium pad with wicking technology. Study findings also suggest that prompt attention to incontinence events is needed to prevent moisture-associated skin damage (incontinence-associated dermatitis) even when absorbent pads are used.

Examining Prevalence and Risk Factors of Incontinence-Associated Dermatitis Using the International Pressure Ulcer Prevalence Survey.

PURPOSE: To evaluate prevalence and risk factors of incontinence-associated dermatitis (IAD). DESIGN: Retrospective analysis of 2016 International Pressure Ulcer Prevalence survey data. SUBJECTS AND SETTING: Adult patients who were in acute care, long-term acute care, long-term care, and rehabilitation facilities in the United States and Canada. METHODS: IAD prevalence was calculated among all patients surveyed, among the incontinent patients only, across multiple care settings, and by incontinence type. A logistic regression examined risk factors for IAD in the incontinent population. RESULTS: Nearly 1 in 5 incontinent patients had IAD documented. Incontinence-associated dermatitis prevalence in the entire patient population was 4.3% while incontinence prevalence was 18%. Of incontinent patients, prevalence of IAD ranged from 8.4% in long-term care facilities to 19% in acute care facilities. Facilities with higher rates of incontinence did not necessarily have higher prevalence of IAD. Incontinence-associated dermatitis prevalence by incontinence type ranged from 12% for patients with urinary incontinence to 26% for patients with fecal management systems. Regression results support the association of the following factors with an increased likelihood of IAD documented: all types of incontinence, fecal management systems, higher body weight, diminished mobility, additional linen layers, longer length of stay, and lower Braden Scale scores. CONCLUSIONS: Incontinence-associated dermatitis remains a concern in acute care settings. Risk factors associated with IAD were similar to risk factors previously reported for hospital-acquired pressure injuries, such as limited mobility, longer lengths of stay, and additional linen layers. By consistently documenting IAD as well as pressure injury prevalence, facilities may benchmark overall skin prevention models.