Eficacia y seguridad del uso de colchoneta, cojinete y rodete de gel polímero viscoelástico para mesa de sala de operaciones en pacientes de cualquier edad con indicación de cirugía cardiaca de alta complejidad / Efficacy and safety of the use of viscoelastic polymer gel mattress, bearing and impeller for operating room table in patients of any age with indication for highly complex cardiac surgery

ANTECEDENTES: En el marco de la metodología ad hoc para evaluar solicitudes de tecnologías sanitarias, aprobada mediante Resolución del Instituto de Evaluación de Tecnologías en Salud e Investigación N° 111-IETSI-ESSALUD-2021, se ha elaborado el presente dictamen, el cual expone la evaluación de la eficacia y seguridad del uso de colchoneta, cojinete y rodete de gel polímero viscoelástico para mesa de sala de operaciones, en pacientes de cualquier edad, que presentan indicación de cirugía cardiaca de alta complejidad. A través de la Nota N°548-DIR-INCOR-ESSALUD-2020, los médicos especialistas del Servicio de Anestesiología, del Instituto Nacional Cardiovascular (INCOR), a través de la gerencia de su dirección, solicitan al Instituto de Evaluación de Tecnologías en Salud e Investigación (IETSI) la evaluación para la posible incorporación de los dispositivos: 1) colchoneta de polímero para mesa de sala de operaciones, 2) cojinete para mesa de operaciones, y 3) rodete circular; los cuáles, según los especialistas, son tecnologías fabricadas con gel polímero viscoelástico. Asimismo, debido a que son tecnologías de uso concomitante, para efectos del presente dictamen preliminar se les denominará como: "Colchoneta, cojinete y rodete de gel polímero viscoelástico para mesa de sala de operaciones". ASPECTOS GENERALES: Las úlceras de presión son lesiones de la piel que ocurren debido a isquemia y necrosis en zonas de la piel que se encuentran sometidas a fricción o presión constante sobre una superficie. Por ello, son comunes en personas postradas debido a condiciones incapacitantes y que generan dificultades motrices (Zaidi S and Sharma S 2021). En el año 2019 se estimó que casi 850,000 personas a nivel mundial tenían al menos una úlcera de presión, lo que representa poco más del doble del número reportado en el año 1990 (420,000) (Zhang et al. 2021). Asimismo, la mayoría de los casos se identificaron en Norteamérica (221,138), Europa Occidental (168,939) y Centroamérica (61,804) (Zhang et al. 2021). Las personas con úlceras de presión suelen presentar desde molestias hasta dolor en la zona afectada, lo que puede afectar su calidad de vida. Del mismo modo, una úlcera de presión puede convertirse en la vía de ingreso para una infección, que eventualmente podría convertirse en una sepsis (Zaidi S and Sharma S 2021). Un grupo particularmente vulnerable a presentar esta complicación son los pacientes sometidos a cirugía cardiaca; pues se estima que casi un tercio de ellos presentará una úlcera de presión luego de la intervención (Feuchtinger, Halfens, and Dassen 2005). Esto se atribuye a la larga duración de este tipo de cirugías y, consecuentemente, al contacto prolongado de la piel del paciente sobre la mesa de operaciones, así como a las fuerzas de cizallamiento ocurridas durante el acto quirúrgico (Chen et al. 2017). METODOLOGÍA: Se realizó una búsqueda bibliográfica exhaustiva con el objetivo de identificar la mejor evidencia disponible sobre la eficacia y seguridad del uso de colchonetas, cojinetes y rodetes de gel polímero viscoelástico, en comparación con la colchoneta estándar de mesa de operaciones y campos de tela enrollados, en pacientes de todas las edades sometidos a cirugía cardiaca de alta complejidad. La búsqueda bibliográficasse realizó en las bases de datos de PubMed, Cochrane Library y LILACS. Asimismo, se realizó una búsqueda manual en Google y dentro de las páginas web pertenecientes a grupos que realizan GPC y ETS, incluyendo el Instituto de Evaluación de Tecnologías en Salud e Investigación (IETSI), Centro Nacional de Excelencia Tecnológica en Salud (CENETEC), National Institute for Health and Care Excellence (NICE), Agency for Healthcare Research and Quality (AHRQ), Scottish Intercollegiate Guidelines Network (SIGN), The Guidelines International Network (GIN), National Health and Medical Research Council (NHMRC), Base Regional de Informes de Evaluación de Tecnologías en Salud de las Américas (BRISA), Comissáo Nacional de lncorporagáo de Tecnologías no Sistema Único de Saúde (CONITEC), Instituto de Evaluación Tecnológica en Salud (IETS), Instituto de Efectividad Clínica y Sanitaria (IECS), Scottish Medicines Consortium (SMC), Canadian Agency for Drugs and Technologies in Health (CADTH), Instituto de Calidad y Eficiencia en la Atención de la Salud (IQWiG, por sus siglas en alemán), y Haute Autorité de Santé (HAS). Además, se realizó una búsqueda de GPC en las páginas web de las principales sociedades o instituciones especializadas en cirugía cardiaca o en la prevención y/o tratamiento de las úlceras de presión, como: National Pressure lnjury Advisory Panel (NPIAP), European Pressure Ulcer Advisory Panel (EPUAP), Pan Pacific Pressure Injury Alliance (PPPIA), Japanese Society of Pressure Ulcers (JSPU), la American College of Cardiology (ACC), y la European Society of Cardiology (ESC). Por último, se realizó una búsqueda de estudios clínicos en ejecución o aún no terminados en ClinicalTrials.gov e International Clinical Trial Registry Platform (ICTRP). RESULTADOS: Luego de la búsqueda bibliográfica con fecha 16 de diciembre de 2021, se incluyeron para evaluación 2 GPC: NICE, y JSPU (Japanese Society of Pressure Ulcers 2016, National Institute for Health and Care Excellence 2018), y una ETS elaborada por la Medical Advisory Secretariat (MAS) de Ontario, en Canadá (Medical Advisory Secretariat 2009). CONCLUSIÓN: Por lo expuesto, el Instituto de Evaluación de Tecnologías en Salud e Investigación no aprueba la incorporación de las tecnologías colchoneta, cojinete y rodete de gel polímero viscoelástico al petitorio de dispositivos de EsSalud, para su uso en pacientes de cualquier edad con indicación de cirugía cardiaca de alta complejidad. Asimismo, se sugiere a los especialistas, que, de existir otro tipo de superficies de redistribución de presión cuyo uso consideren podría ser de beneficio para la prevención de la incidencia de úlceras de presión o quemaduras por cizallamiento, en los pacientes con indicación de cirugía cardiaca de alta complejidad, envíen sus solicitudes debidamente justificadas para ser valorados en una nueva ETS.

Improving Hospital Infant Safe Sleep Compliance by Using Safety Prevention Bundle Methodology.

BACKGROUND AND OBJECTIVES: Sudden unexpected infant death often results from unsafe sleep environments and is the leading cause of postneonatal mortality in the United States. Standardization of infant sleep environment education has been revealed to impact such deaths. This standardized approach is similar to safety prevention bundles typically used to monitor and improve health outcomes, such as those related to hospital-acquired conditions (HACs). We sought to use the HAC model to measure and improve adherence to safe sleep guidelines in an entire children's hospital. METHODS: A hospital-wide safe sleep bundle was implemented on September 15, 2017. A safe sleep performance improvement team met monthly to review data and discuss ideas for improvement through the use of iterative plan-do-study-act cycles. Audits were performed monthly from March 2017 to October 2019 and monitored safe sleep parameters. Adherence was measured and reviewed through the use of statistical process control charts (p-charts). RESULTS: Overall compliance improved from 9% to 72%. Head of bed flat increased from 62% to 93%, sleep space free of extra items increased from 52% to 81%, and caregiver education completed increased from 10% to 84%. The centerline for infant in supine position remained stable at 81%. CONCLUSIONS: Using an HAC bundle safety prevention model to improve adherence to infant safe sleep guidelines is a feasible and effective method to improve the sleep environment for infants in all areas of a children's hospital.

Comparing Pressure Injury Incidence Based on Repositioning Intervals and Support Surfaces in Acute Care Settings: A Quasi-Experimental Pragmatic Study.

OBJECTIVE: To compare pressure injury (PI) incidence based on repositioning intervals and support surfaces in acute care settings. METHODS: This pragmatic, quasi-experimental trial recruited a total of 251 critically ill patients who were at low or moderate risk for PI development. Participants were assigned to three interventions: a 2-hour repositioning interval using an air mattress, a 2-hour repositioning interval using a foam mattress, or a 3-hour repositioning interval using a foam mattress. Data were collected by nurses every shift over the course of 14 days. Pressure injury incidence was analyzed using a χ2 test. RESULTS: There were no statistically significant differences in PI incidence between the groups with a 2-hour repositioning interval. However, the PI incidence in the group using a foam mattress with a 3-hour repositioning interval was significantly lower than in the group using an air mattress with a 2-hour repositioning interval (odds ratio, 0.481; 95% confidence interval, 0.410-0.565). CONCLUSIONS: The findings showed that PIs decreased when the repositioning interval was extended from every 2 hours to every 3 hours while using foam mattresses. This study suggests that a 3-hour repositioning interval using a foam mattress could be applied to reduce the risk of PI development for patients at low or moderate risk.

A randomized controlled trial to compare the interface pressures of alternating pressure overlay with gel pad versus gel pad alone during prolonged surgery.

INTRODUCTION: Prolonged surgery is a known risk of pressure ulcer formation. Pressure ulcers affect the quality of life, are a significant cause of morbidity and mortality, and pose a burden on the healthcare system. This study aimed to compare the effectiveness of an alternating pressure (AP) overlay with Gel pad against the Gel pad in reducing interface pressure (IP) during prolonged surgery. METHODS: A total of 180 participants from a tertiary hospital were randomized to AP overlay with Gel pad group (n = 90) and Gel pad group (n = 90). Patients were placed supine on the pressure redistributing surfaces, and IP data under the sacrum and ischial tuberosities were collected at an interval of 30 min from 0 min up to a maximum of 570 min. RESULTS: Based on data from 133 participants, the average IPs during all the deflation cycles of the AP overlay (with Gel pad) were significantly lower than the average continuous IP recorded for Gel pad throughout the measuring period (p < 0.001). Only three patients (2.26% of study participants) - Gel pad group (n = 2; 2.99%) and AP overlay with Gel pad group (n = 1; 1.52%) developed post-operative pressure ulcer (p = 0.5687). CONCLUSIONS: The lower IP during deflation cycles of the AP overlay (with Gel pad) suggests its potential effectiveness in preventing pressure ulcer formation in patients undergoing prolonged surgery. The prevention and reduction of pressure ulcers will have a considerable impact on the improved quality of life and cost savings for the patient. The study findings may facilitate the formulation of policies for preventing pressure ulcer development in the perioperative setting.

A comparison of air-cell and gel surgical table pads and an evaluation of the influence of pressure distribution and other factors on pressure injury prevention.

Guidelines for pressure injury prevention consider the use of pressure-redistributing pads to prevent tissue deformation. However, limited research exists to assess the pressure distribution provided by the operating tables and the effectiveness of pressure-redistributing pads in preventing pressure injuries. In this study, we compared the pressure distribution properties of two surgical table pads and identified parameters influencing pressure injury outcomes after a lengthy surgical procedure. Twenty-seven patients undergoing left ventricular assist device implantation surgery participated in the study. Participants were randomly assigned to use either an air cell-based pad or a gel pad. Interface pressure was recorded during the surgery. We analyzed the effect of surgical table pad type, interface pressure distribution and pressure injury outcomes and analyzed what characteristics of the patients and the interface pressure are most influential for the development of pressure injuries. Comparing the interface pressure parameters between the air-cell group and the gel group, only the peak pressure index x time was significantly different (p < 0.05). We used univariate logistic regression analysis to identify significant predictors for the pressure injury outcome. The support surface was not significant. And, among patient characteristics, only age and BMI were significant (p ≤ 0.05). Among the interface pressure parameters, pressure density maxima, peak pressure index x time, and coefficient of variation were significant for pressure injury outcome (p ≤ 0.05). Peak pressure index, average pressure, and the surgery length were not statistically significant for pressure injury outcomes.

Tradução e adaptação transcultural do instrumento evaluation of siderail usage / Traducción y adaptación transcultural del instrumento evaluation of siderail usage / Translation and cross-cultural adaptation of the evaluation of siderail usage instrument

Objetivo: traduzir e adaptar transculturalmente o instrumento Evaluation of Siderail Usage para a língua portuguesa do Brasil. Método: pesquisa metodológica de tradução e adaptação transcultural de um instrumento em quatro etapas. Resultados: na primeira etapa foram realizadas duas traduções; na segunda, foi realizada uma reunião consensual com duas tradutoras e as autoras do estudo para discutir discrepâncias e gerar uma versão síntese; na terceira etapa, a versão síntese foi retrotraduzida para o inglês por duas tradutoras para se verificar a equivalência com a versão original; e na quarta etapa, um comitê de 25 juízes profissionais da área de saúde analisaram a versão síntese. Os resultados demostraram um Índice de Validade de Conteúdo do instrumento de 0,97 e um Coeficiente de Validade de Conteúdo de 0,93. Conclusão: a tradução e adaptação do instrumento Evaluation of Siderail Usage para a língua portuguesa do Brasil apresentou bons índices de validade do conteúdo.

Objetivo: traducir y adaptar el instrumento Evaluation of Side Rail Usage al idioma portugués brasileño. Método: investigación metodológica de la traducción y adaptación transcultural de un instrumento en cuatro pasos. Resultados: en la primera etapa, se realizaron dos traducciones; en la segunda, se realizó una reunión consensuada con dos traductores y los autores del estudio para discutir discrepancias y generar una versión de síntesis; en la tercera etapa, la versión de síntesis fue retrotraducida al inglés por dos traductores para verificar la equivalencia con la versión original; y en la cuarta etapa, un comité de 25 jueces profesionales del área de salud analizó la versión de síntesis. Los resultados mostraron un índice de validez de contenido del instrumento de 0,97 y un Coeficiente de Validez de Contenido de 0,93. Conclusión: la traducción y adaptación del instrumento de Evaluation of Side Rail Usage al portugués brasileño presentó buenos índices de validez de contenido.

Objective: to translate and adapt cross-culturally the Evaluation of Side Rail Usage instrument to the Brazilian Portuguese. Method: methodological research with four-step translation and cross-cultural adaptation of an instrument. Results: in the first stage, two translations were performed; in the second, a consensual meeting was held with two translators and the authors of the study to discuss discrepancies and generate a synthesis version; in the third stage, the synthesis version was backtranslated into English by two translators to verify equivalence with the original version; and in the fourth stage, a committee of 25 professional judges from the health area analyzed the synthesis version. The results showed an instrument Content Validity Index of 0.97 and a Content Validity Coefficient of 0.93. Conclusion: the translation and adaptation of the Evaluation of Side Rail Usage instrument into Brazilian Portuguese presented good content validity indexes.

Interface Pressures of New and Worn Standard and Viscoelastic Hospital Mattresses: A Comparative Study.

Hospital mattresses have been found to be used for up to 10 years in Norway. Few studies have investigated how wear and tear affects foam qualities. PURPOSE: This descriptive comparative study investigated interface pressures in a sample of 5 new and worn standard and viscoelastic hospital mattresses and compared their comfort and mobility ratings. METHODS: Using convenience sampling methods, 20 healthy individuals (75% female, average age 41.3 years [SD ± 12.25]) volunteered to lay supine for 10 minutes on 5 different mattresses. Mattresses had been in use for up to 7 years (since 2011). Using a bed-size pressure mapping system, interface pressures (mm Hg) were obtained after 10 minutes. Comfort and ease of turning oneself (very poor to very good) were evaluated after the pressure mapping was completed. RESULTS: Differences were found between viscoelastic mattresses and standard mattresses, with mean interface pressures ranging from 30.28 to 38.37 mm Hg (P = .011), and for the mean number of cells 60 mm Hg or above (P = .025) and 80 mm Hg or above (P = .046) between the different mattresses after 10 minutes. One standard mattress from 2014 had the highest mean interface pressure (38.37 ± 7.43 mm Hg). Viscoelastic foam mattresses had the highest comfort, and standard mattresses had the highest ease of mobility scores; however, the differences were not significant. The mean interface pressures differed between participants weighing > 100 kg and those weighing < 100 kg on the standard mattress from 2011 (46.50 ± 4.83 vs. 33.86 ± 5.83; P = .012). Similarly, the values were 41.25 ± 7.70 versus 29.78 ± 5.99 on the new viscoelastic mattress (P = .040) and 42.87 ± 4.09 versus 28.05 ± 6.16 (P = .012) on the old viscoelastic mattress. CONCLUSION: Older standard mattresses were found to be less comfortable and had higher interface pressures compared to the new standard and viscoelastic foam mattresses.

Effect of an Innovative Mattress and Cryotherapy on Sleep after an Elite Rugby Match.

INTRODUCTION: This study aimed to explore the relationship between elite rugby union match and postmatch sleep architecture and to investigate the effects of a high-heat capacity mattress (MAT) and a whole-body cryotherapy (WBC) session on postmatch sleep architecture. METHODS: Nineteen elite male U23 rugby union players performed in three official matches, followed by three experimental conditions, in a randomized order: MAT, WBC, and no intervention (CONT). Match load was evaluated using GPS trackers and video analyses. Sleep architecture was assessed by polysomnography (PSG). Core body temperature (CBT) and mattress surface temperature were monitored during sleep. Linear mixed-effects models were conducted to assess the effects of each experimental condition on sleep, with match load variables as covariates. RESULTS: A lower wake after sleep onset (ß = -10.5 min, P < 0.01) and higher rapid eye movement sleep proportion (ß = +2.8%, P < 0.05) were reported for MAT compared with CONT. Moreover, lower mean CBT (ß = -0.135°C, P < 0.001) and mean mattress surface temperature (ß = -2.736°C, P < 0.001) during sleep were observed for MAT compared CONT. WBC did not affect nocturnal CBT nor interfere with sleep architecture. For every 100-m increase in high-speed running distance, a higher slow wave sleep (ß = +1.1%, P = 0.05) and lower light sleep proportion (ß = -1.2%, P < 0.05) proportion were observed. Conversely, for every 10 supplementary collisions, lower slow wave sleep (ß = -1.9, P = 0.09) and higher light sleep (ß = +2.9%, P < 0.001) proportion were observed. CONCLUSION: MAT use had a positive effect on sleep architecture after an elite rugby union match, potentially through a more efficient nocturnal heat transfer.

Wound Healing in the Long-Term Acute Care Setting Using an Air Fluidized Therapy/Continuous Low-Pressure Therapeutic Bed: A Multiple Case Series.

BACKGROUND: We evaluated a new bed that updates the functionality of the current air fluidized therapy (AFT)/continuous low-pressure (CLP) pressure redistributing beds. This bed was evaluated in conjunction with standard wound care interventions in a long-term acute care hospital (LTACH). The AFT feature is designed to provide pressure distribution via a fluid-like medium that forces air though millions of tiny silicone beads that float the patient's body to achieve maximum immersion and envelopment. The CLP feature of the bed provides pressure distribution for the upper body. Standard wound care was provided that included debridement, topical treatments, and biophysical therapies such as negative pressure wound therapy, as indicated. CASES: Our multiple case series comprised 10 medically compromised patients with 25 wounds. Their mean age was 63 years, 50% were male, and the mean cumulative Braden Scale score was 12.4 out of 23, indicating a high risk for pressure injury (PI). Seven of 10 patients were incontinent of urine, 6 had fecal incontinence, and 2 had ostomies. Types of wounds treated included 2 large tissue defects from surgical excisions for the treatment of gangrene and 23 PIs. On admission, wounds had an average surface area of 139.1 cm. The mean percentage of reduction in wound surface area was 59.3% over an average of 31.3 days of therapy. No new wounds formed during their course of care despite being at elevated risk. CONCLUSIONS: Findings from this multiple case series suggest that the AFT/CLP bed facilitates healing of advanced wounds in medically complex patients when included as part of a wound care program. Despite mild to high risk, no new PIs developed, and severe PIs and large tissue defects significantly improved or completely resolved. One hundred percent of surveyed staff members recommend use of the AFT/CLP bed.

Comparison of Macintosh Laryngoscopy in Bed-up-Head-Elevated Position With GlideScope Laryngoscopy: A Randomized, Controlled, Noninferiority Trial.

BACKGROUND: Approximately half of all difficult tracheal intubations (DTIs) are unanticipated; hence, proper positioning during intubation is critical to increase the likelihood of success. The bed-up-head-elevated (BUHE) intubation position has been shown to improve laryngeal view, reduce airway complications, and prolong safe apneic time during intubation. In this study, we sought to determine whether the BUHE intubation position is noninferior to Glidescope (GLSC)-assisted intubation with regard to laryngeal exposure. METHODS: A total of 138 American Society of Anesthesiologists (ASA) I to III patients were randomly assigned into 2 groups and underwent baseline laryngoscopy in the sniffing position. Group BUHE patients (n = 69) were then intubated in the BUHE position, while group GLSC patients (n = 69) were intubated using GLSC laryngoscopy. Laryngeal exposure was measured using Percentage of Glottic Opening (POGO) score and Cormack-Lehane (CL) grading, and noninferiority will be declared if the difference in mean POGO scores between both groups do not exceed -15% at the lower limit of a 98% confidence interval (CI). Secondary outcomes measured included time required for intubation (TRI), number of intubation attempts, use of airway adjuncts, effort during laryngoscopy, and complications during intubation. RESULTS: Mean POGO score in group BUHE was 80.14% ± 22.03%, while in group GLSC it was 86.45% ± 18.83%, with a mean difference of -6.3% (98% CI, -13.2% to 0.6%). In both groups, there was a significant improvement in mean POGO scores when compared to baseline laryngoscopy in the sniffing position (group BUHE, 25.8% ± 4.7%; group GLSC, 30.7% ± 6.8%) (P < .0001). The mean TRI was 36.23 ± 14.41 seconds in group BUHE, while group GLSC had a mean TRI of 44.33 ± 11.53 seconds (P < .0001). In patients with baseline CL 3 grading, there was no significant difference between mean POGO scores in both groups (group BUHE, 49.2% ± 19.6% versus group GLSC, 70.5% ± 29.7%; P = .054). CONCLUSIONS: In the general population, BUHE intubation position provides a noninferior laryngeal view to GLSC intubation. The laryngeal views obtained in both approaches were superior to the laryngeal view obtained in the sniffing position. In view of the many advantages of the BUHE position for intubation, the lack of proven adverse effects, the simplicity, and the cost-effectiveness, we propose that clinicians should consider the BUHE position as the standard intubation position for the general population.

Living With Intelligent Sensors: Older Adult and Family Member Perceptions.

This qualitative study is part of a larger randomized prospective intervention study that examined the clinical and cost effectiveness of using sensor data from an environmentally embedded sensor system for early illness recognition. It explored the perceptions of older adults and family members on the sensor system's usefulness, impact on daily routine, privacy, and sharing of health information. This study was conducted in 13 assisted-living facilities in Missouri, and 55 older adults were interviewed. Data were collected over five points in time with a total of 188 interviews. From these five participant interview iterations, the following themes emerged: (1) understanding and purpose, (2) daily life and benefits, (3) impact on privacy, and (4) sharing of information. Three themes emerged from one round of family interviews: (1) benefits of bed sensors, (2) family involvement/staff interaction, and (3) privacy protection versus sensor benefits. The sensor suite was regarded as helpful in maintaining independence, health, and physical functioning. Responses suggest that the willingness to adopt the sensor suite was motivated by both a decline in functional status and a desire to remain independent. Participants were willing to share their health data with providers and select family members. Recommendations for future practice are provided.

Use of 2 Types of Air-cell Mattresses for Pressure Ulcer Prevention and Comfort Among Patients With Advanced-stage Cancer Receiving Palliative Care: An Interventional Study.

Patients with advanced- or terminal-stage cancer and persons receiving palliative care are at high risk for pressure ulcers (PUs). PURPOSE: The purpose of this study was to examine the rate of PU development and levels of comfort of a dual-fit, air-cell mattress compared with an alternating, 2-layer overlay air-cell mattress in patients with advanced- or terminal-stage cancer receiving palliative care. METHODS: From January 2011 to December 2013, hospitalized patients with advanced- or terminal-stage cancer who were referred to a palliative care team, at least 20 years of age, able to communicate, experiencing pain, and did not have a PU were recruited to participate. Patients who consented were alternately placed on the intervention (dual-fit, air-cell) or control (2-layer air) mattress until hospital discharge or death. Demographic and clinical data, pain scores, performance status, Palliative Performance Scale scores, Braden Scale scores, tissue interface pressure, and comfort were assessed via interview using closed-end questions. If a PU developed, clinical characteristics were assessed using DESIGN-R. Descriptive statistics and the Mann-Whitney U, chi-squared, and Fisher's exact tests were used to analyze the data. RESULTS: Of the 123 eligible patients, 73 were randomized and 52 completed the study (23 intervention patients, median age 63 [range 27-80] years; and 29 control group patients, median age 61.0 [range 27-82] years). Mattresses were used a median of 17 (range 4-113) days in the intervention group and a median of 32 (range 3-270) days in the control group. The incidence of PUs did not significantly differ between the 2 groups (13% in the intervention and 17.2% in the control group). Interface pressures were significantly higher in the intervention group (27.0 mm Hg vs. 24.3 mm Hg). Comfort scores at rest were significantly better in the intervention than in the control group (sinking into bed [3 vs. 14, respectively]; slipping on bed [o vs. 16, respectively]; and feel pressure of air cell [2 vs. 14, respectively]), as were scores with movement (instability during movement [4 vs. 18, respectively] and feeling of floating of the buttocks [6 vs. 21, respectively]) (P <.05). CONCLUSION: Dual-fit, air-cell mattresses may help prevent PUs and improve comfort at rest and during activity among patients with end-stage cancer receiving palliative care. Further research regarding mattress selection protocols for this patient population is warranted.

A quantitative study of transepidermal water loss (TEWL) on conventional and microclimate management capable mattresses and hospital beds.

BACKGROUND: Transepidermal water loss (TEWL) is regarded as one of the most important parameters characterizing skin barrier integrity and has found to be higher in impaired skin barrier function. Reduced or low TEWL instead indicates skin barrier integrity or improvement. We evaluated if different mattresses/hospital beds can influence this skin barrier function by measuring TEWL before and after subjects lying in conventional and microclimate management capable mattresses/hospital beds. METHODS: We included 25 healthy subjects in our study. Measurements were made using Courage & Khazaka Multi Probe Adapter MPA with Tewameter TM300 to determine TEWL before and after the subjects were lying in conventional (Viskolastic® Plus, Wulff Med Tec GmbH, Fedderingen, Germany and Duo™ 2 mattress, Hill-Rom GmbH Essen, Germany) or microclimate management capable mattresses/hospital beds (ClinActiv + MCM™ and PEARLS AFT, Hill-Rom GmbH Essen, Germany). RESULTS: While there was no statistically significant difference in standard mattresses/hospital beds (22.19 ±â€¯12.99 and 19.80 ±â€¯11.48 g/hm2), the decrease of TEWL was statistically significant in both microclimate management capable mattresses/hospital beds we investigated (16.89 ±â€¯8.586 g/hm2 and 17.41 ±â€¯7.203 g/hm2) compared to baseline values (35.85 ±â€¯24.51 g/hm2). CONCLUSION: As higher TEWL announces impaired skin barrier function these findings indicate that the choice of the mattress/hospital bed is important for skin barrier function and microclimate management systems improve skin barrier function of the skin.

Sacral skin blood flow response to alternating pressure operating room overlay.

Pressure injuries resulting from long surgeries may be caused by prolonged ischemia. Operating table surfaces with alternating pressure (AP) features may reduce the risk of ischemia-induced pressure injuries by providing periodic relief of blood flow occlusions. Prior research investigated alternating loading applied with a single isolated rigid indenter and demonstrated increased perfusion. This study quantified effects of an overlay with AP on sacral skin perfusion for individuals lying supine for 60-min while blood flow was monitored. The mean normalized sacral skin blood flow was found to be greater with the AP overlay over an operating table pad compared to the operating pad alone (pad with AP mean SBF = 1.45 ±â€¯1.16, pad without AP mean SBF = 1.03 ±â€¯0.46, p = 0.10). Peak and average interface pressure at the sacrum was significantly lower during the deflation cycle of the AP surface compared to the operating pad alone (P < 0.001), suggesting this periodic reduction resulted in higher mean blood flow. Post-hoc regression analysis showed participant body mass index was a significant predictor of the effectiveness of the AP overlay (p = 0.012). The results suggest risk for pressure injuries due to prolonged ischemia might be mitigated by the addition of an alternating pressure feature on operating table pads for lower BMI patients.

Pressure Redistribution Crib Mattress: A Quality Improvement Project.

BACKGROUND: Selective use of pressure-redistributing support surfaces is considered an essential component of a pressure injury prevention bundle. Critically ill children who are too big for an isolette but too little for a bed are usually placed in critical care cribs that have unique features such as moveable side rails and a built-in scale for weighing the patient, but they do not have a mattress designed to redistribute pressure. The primary aim of this quality improvement project was to evaluate a pressure redistribution mattress designed for use in critical care cribs. CASES: We retrospectively reviewed 22 charts of critically ill pediatric patients who participated in a product trial completed over a 12-week period in a stand-alone children's hospital in the Western United States. We reviewed demographic data, skin assessments, Braden Q Scale score, and support surface use. Our review revealed no pressure injury occurrences over the 12-week data collection period. CONCLUSIONS: Findings from this quality improvement project suggest that the pressure-redistributing mattress, when used as part of an intervention bundle, prevents pressure injuries in critically ill pediatric patients.

Investigation of effects of urethane foam mattress hardness on skin and soft tissue deformation in the prone position using magnetic resonance imaging.

AIM: In operating rooms, the occurrence of pressure ulcers caused by being in the prone position is the highest among that of pressure ulcers caused by being in other surgical positions. Thus, we investigated effects of hardness and shape of urethane foam mattresses for preventing pressure ulcers during surgery performed with patients in the prone position. We aimed to elucidate how mattresses of variable hardness and shapes affect compression and displacement of the skin and soft tissues with external force in the prone position. MATERIAL AND METHODS: We assessed effects of two shapes [rectangular cube (RC) and trapezoid cube (TC)] and four degrees of hardness (50, 87.5, 175, and 262.5 N) in each shape. We performed magnetic resonance imaging (MRI) of the iliac crests with external force while participants reclined in the prone position on eight different mattresses. RESULTS: Compression of the skin and soft tissue was significantly higher with 87.5-, 175-, and 262.5-N mattresses than that with 50-N mattresses. Skin and soft tissue displacement was higher with TC mattress than that with RC mattress, and the extent of skin surface and internal soft tissue displacement was different. CONCLUSIONS: Compression of the skin and soft tissue depends on mattress hardness; however, a threshold value (175 N) for hardness exists, above which no further changes in the parameters were observed. Skin and soft tissue displacement does not depend on mattress hardness, but rather on its shape. Furthermore, mattress inclination increases skin surface displacement.

Sleep environments and sleep physiology: A review.

Sleep loss impairs task performance and post-physical activity recovery, cognitive performance and mood, heightens fatigue and decreases vigour; poor sleep quality impairs decision-making, the speed and accuracy of task performance, and post-exercise recovery. Sleep time and quality are affected by age, psychological and physiological conditions, culture and environmental factors. Skin temperature, rapid temperature change and sweating during sleep can significantly reduce sleep quality. Hence, the thermal properties of bedding and sleepwear, both in steady-state and transient ambient temperature conditions, are logically important factors. Research to date on sleeping thermal microclimates and their effect on sleep quality is scarce. This present review covers the fundamental elements of human sleep, highlighting physically active people, such as athletes, and the influence of sleepwear and bedding on sleep thermal microclimates, as well as the research methods that have been and could be used in this field. This review identifies opportunity for future research direction and approaches to understanding thermal environments that may support better human sleep.

Support surfaces for treating pressure ulcers.

BACKGROUND: Pressure ulcers are treated by reducing pressure on the areas of damaged skin. Special support surfaces (including beds, mattresses and cushions) designed to redistribute pressure, are widely used as treatments. The relative effects of different support surfaces are unclear. This is an update of an existing review. OBJECTIVES: To assess the effects of pressure-relieving support surfaces in the treatment of pressure ulcers. SEARCH METHODS: In September 2017 we searched the Cochrane Wounds Specialised Register; the Cochrane Central Register of Controlled Trials (CENTRAL); Ovid MEDLINE (including In-Process & Other Non-Indexed Citations); Ovid Embase and EBSCO CINAHL Plus. We also searched clinical trials registries for ongoing and unpublished studies, and scanned reference lists of relevant included studies as well as reviews, meta-analyses and health technology reports to identify additional studies. There were no restrictions with respect to language, date of publication or study setting. SELECTION CRITERIA: We included published or unpublished randomised controlled trials (RCTs), that assessed the effects of support surfaces for treating pressure ulcers, in any participant group or setting. DATA COLLECTION AND ANALYSIS: Data extraction, assessment of 'Risk of bias' and GRADE assessments were performed independently by two review authors. Trials with similar participants, comparisons and outcomes were considered for meta-analysis. Where meta-analysis was inappropriate, we reported the results of the trials narratively. Where possible, we planned to report data as either risk ratio or mean difference as appropriate. MAIN RESULTS: For this update we identified one new trial of support surfaces for pressure ulcer treatment, bringing the total to 19 trials involving 3241 participants. Most trials were small, with sample sizes ranging from 20 to 1971, and were generally at high or unclear risk of bias. PRIMARY OUTCOME: healing of existing pressure ulcersLow-tech constant pressure support surfacesIt is uncertain whether profiling beds increase the proportion of pressure ulcer which heal compared with standard hospital beds as the evidence is of very low certainty: (RR 3.96, 95% CI 1.28 to 12.24), downgraded for serious risk of bias, serious imprecision and indirectness (1 study; 70 participants).There is currently no clear difference in ulcer healing between water-filled support surfaces and foam replacement mattresses: (RR 0.93, 95% CI 0.63 to 1.37); low-certainty evidence downgraded for serious risk of bias and serious imprecision (1 study; 120 participants).Further analysis could not be performed for polyester overlays versus gel overlays (1 study; 72 participants), non-powered mattresses versus low-air-loss mattresses (1 study; 20 participants) or standard hospital mattresses with sheepskin overlays versus standard hospital mattresses (1 study; 36 participants).High-tech pressure support surfacesIt is currently unclear whether high-tech pressure support surfaces (such as low-air-loss beds, air suspension beds, and alternating pressure surfaces) improve the healing of pressure ulcers (14 studies; 2923 participants) or which intervention may be more effective. The certainty of the evidence is generally low, downgraded mostly for risk of bias, indirectness and imprecision.Secondary outcomesNo analyses were undertaken with respect to secondary outcomes including participant comfort and surface reliability and acceptability as reporting of these within the included trials was very limited.Overall, the evidence is of low to very low certainty and was primarily downgraded due to risk of bias and imprecision with some indirectness. AUTHORS' CONCLUSIONS: Based on the current evidence, it is unclear whether any particular type of low- or high-tech support surface is more effective at healing pressure ulcers than standard support surfaces.

¿Qué es más eficaz para la prevención de úlceras por presión: cambios posturales o superficies de apoyo? / What is more effective for preventing pressure ulcers: repositioning or support surface?

Objetivo: Analizar si los cambios posturales son más eficaces para la prevención de las úlceras por presión que una superficie de apoyo en un paciente anciano. Metodología: Búsqueda bibliográfica con perspectiva cuantitativa. Se emplearon las bases de datos de PubMed y Scopus, con los descriptores "pressure ulcer", "repositioning", "beds" y "support surface", mediante términos booleanos. Los artículos seleccionados son revisiones sistemáticas y ensayos clínicos. Resultados: No existen diferencias en realizar los cambios posturales cada 3-4 horas en vez de cada 2 horas. Conclusiones: Los cambios posturales realizados cada 3-4 horas en vez de cada 2 horas suponen una disminución del coste de trabajo enfermero y a su vez incrementan el sueño y mejoran la calidad de vida del paciente, ya que el efecto de prevención en ambos turnos de rotación no supone diferencia. No existen artículos o revisiones sistemáticas que respondan a la pregunta clínica planteada

Objective: Analyse if repositioning is more effective for preventing pressure ulcers than anti-decubitus mattress in an elder patient. Methodology: Bibliographic revision with quantitative perspective. PubMed and Scopus were used them, with descriptors "pressure ulcer", "repositioning", "beds" and "support surface", through Booleans terms. The articles, which were selected, are systematic reviews and clinical trials. Results: There is not difference between repositioning each 3-4 hours and each 2 hours. Conclusions: Repositioning each 3-4 hours instead of repositioning each 2 hours, decreases personnel cost and increases the dream and quality of life of the patient, because there is not difference about prevention in both cases. There are not articles or systematic revisions that they can answer the evidence question