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Hara K, Uemura T, Tachibana R, Kumashiro R, Yamaguchi M, Kawahara I, Fujioka M. Prevention of Postoperative Skin Disorders and Pressure Injuries in the Neurosurgical Park Bench Position Surgery: A Prospective Cohort Study. Cureus 2024; 16:e58552. [PMID: 38765353 PMCID: PMC11102086 DOI: 10.7759/cureus.58552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/18/2024] [Indexed: 05/22/2024] Open
Abstract
Background In neurosurgical procedures where the park bench position is employed, the risk of perioperative pressure injuries is elevated due to the limited contact surface area, with the head and part of the upper torso extending beyond the surgical table. This study aimed to examine the effects of preventative measures against such injuries, proposing a potential standard for postural fixation in these surgeries. Methods Conducted at a medical center, from January 2017 to March 2023, this prospective cohort study involved participants aged 20 and above who underwent neurosurgical procedures in the park bench position under general anesthesia. The focus was on comparing the incidence of pressure injuries between intervention and control groups. The study adhered to the Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) guidelines. Results Out of 65 patients enrolled, 28 were assigned to each of the intervention and control groups. The control group experienced 17 instances of postoperative pressure injuries and skin disorders in areas prone to pressure, such as the axillary and greater trochanter regions. Conversely, the intervention group reported no such incidents, underscoring the efficacy of meticulous surgical positioning and management of bodily pressure, temperature, humidity, and microclimate. Conclusion Implementing preventive measures in neurosurgical park bench procedures significantly reduces the incidence of postoperative pressure injuries and skin disorders. These findings advocate for the adoption of standardized postural fixation protocols in such surgeries, potentially influencing global clinical practices in neurosurgery.
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Affiliation(s)
- Kentaro Hara
- Operation Center Division, National Hospital Organization Nagasaki Medical Center, Nagasaki, JPN
- Healthcare Management Research Center, Chiba University Hospital, Chiba, JPN
| | - Takahiro Uemura
- Operation Center Division, National Hospital Organization Nagasaki Medical Center, Nagasaki, JPN
| | - Reika Tachibana
- Operation Center Division, National Hospital Organization Nagasaki Medical Center, Nagasaki, JPN
| | - Ryosuke Kumashiro
- Operation Center Division, National Hospital Organization Nagasaki Medical Center, Nagasaki, JPN
| | - Michiko Yamaguchi
- Department of Anesthesiology, National Hospital Organization Nagasaki Medical Center, Nagasaki, JPN
| | - Ichiro Kawahara
- Department of Neurosurgery, Japan Community Health Care Organization Isahaya General Hospital, Nagasaki, JPN
| | - Masaki Fujioka
- Department of Plastic and Reconstructive Surgery, National Hospital Organization Nagasaki Medical Center, Nagasaki, JPN
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2
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Zeng M, Li Y, Hu J, Peng M, Hu Y, Zhou C. Effect of various repositioning regimens on pressure wound ulcer occurrence in at-risk adult persons without existing pressure wound ulcers: A meta-analysis. Int Wound J 2023; 20:3776-3785. [PMID: 37381159 PMCID: PMC10588354 DOI: 10.1111/iwj.14277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 05/31/2023] [Accepted: 06/01/2023] [Indexed: 06/30/2023] Open
Abstract
Meta-analysis research was implemented to appraise the effect of various repositioning regimens (RRs) on pressure wound ulcer (PWU) occurrence in at-risk adult persons without existing PWUs. Inclusive literature research till April 2023 was done and 1197 interconnected researches were revised. The 15 picked researches, enclosed 8510 at-risk adult persons without existing PWUs persons were in the utilised researchers' starting point, 1002 of them were utilising repositioning, 1069 were control, 3443 were utilising 2-<4 h repositioning and 2994 were utilising 4-6 h repositioning. Odds ratio (OR) and 95% confidence intervals (CIs) were utilised to appraise the consequence of various RRs on PWU occurrence in at-risk adult persons without existing PWUs by the dichotomous approach and a fixed or random model. Repositioning had significantly lower PWU (OR, 0.49; 95% CI, 0.32-0.73, p < 0.001) compared to control in at-risk adult persons without existing PWUs persons. 2-<4 h repositioning had significantly lower PWU (OR, 0.62; 95% CI, 0.42-0.90, p = 0.01) compared to 4-6 h repositioning in at-risk adult persons without existing PWUs persons. Repositioning had significantly lower PWU compared to control in at-risk adult persons without existing PWU persons. 2-<4 h repositioning had significantly lower PWU compared to 4-6 h repositioning in at-risk adult persons without existing PWUs persons. However, caution needs to be taken when interacting with its values since there was a low sample size of some of the chosen research found for the comparisons in the meta-analysis.
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Affiliation(s)
- Mei Zeng
- Department of Emergency MedicineThe Affiliated Hospital of Southwest Medical UniversityLuzhouChina
| | - Yuan Li
- Department of Emergency MedicineThe Affiliated Hospital of Southwest Medical UniversityLuzhouChina
| | - Juan Hu
- Department of Emergency MedicineThe Affiliated Hospital of Southwest Medical UniversityLuzhouChina
| | - Miao Peng
- Department of Emergency MedicineThe Affiliated Hospital of Southwest Medical UniversityLuzhouChina
| | - Yingchun Hu
- Department of Emergency MedicineThe Affiliated Hospital of Southwest Medical UniversityLuzhouChina
| | - Chengli Zhou
- Department of Emergency MedicineThe Affiliated Hospital of Southwest Medical UniversityLuzhouChina
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3
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Garg B, Bansal T, Mehta N, Sharan AD. Patient Positioning in Spine Surgery: What Spine Surgeons Should Know? Asian Spine J 2023; 17:770-781. [PMID: 37226380 PMCID: PMC10460667 DOI: 10.31616/asj.2022.0320] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Accepted: 09/15/2022] [Indexed: 05/26/2023] Open
Abstract
Spine surgery has advanced tremendously over the last decade. The number of spine surgeries performed each year has also been increasing constantly. Unfortunately, the reporting of position-related complications in spine surgery has also been steadily increasing. These complications not only result in significant morbidity for the patient but also raises the risk of litigation for the surgical and anesthetic teams. Fortunately, most position-related complications are avoidable with basic positioning knowledge. Hence, it is critical to be cautious and take all necessary precautions to avoid position-related complications. We discuss the various position-related complications associated with the prone position, which is the most commonly used position in spine surgery, in this narrative review. We also discuss the various methods for avoiding complications. Furthermore, we briefly discuss less commonly used positions in spine surgery, like the lateral and sitting positions.
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Affiliation(s)
- Bhavuk Garg
- Department of Orthopaedics, All India Institute of Medical Sciences, New Delhi,
India
| | - Tungish Bansal
- Department of Neurosurgery, All India Institute of Medical Sciences, New Delhi,
India
| | - Nishank Mehta
- Department of Orthopaedics, All India Institute of Medical Sciences, New Delhi,
India
| | - Alok D. Sharan
- Spine and Orthopedics, NJ Spine and Wellness, Matawan, NJ,
USA
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4
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Martins de Oliveira AL, O'Connor T, Patton D, Strapp H, Moore Z. Sub-epidermal moisture versus traditional and visual skin assessments to assess pressure ulcer risk in surgery patients. J Wound Care 2022; 31:254-264. [PMID: 35199594 DOI: 10.12968/jowc.2022.31.3.254] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
OBJECTIVE To compare the predictive ability of subepidermal moisture (SEM) measurement versus traditional risk assessment and visual skin assessment (VSA) as means of detecting early pressure ulcer (PU) damage development among adults undergoing surgery. METHOD A non-experimental, comparative, descriptive cohort study design was used. Following ethical approval, participants who had given their informed written consent had their skin assessed over the areas that were weight-bearing during surgery, using VSA and the SEM measurement. Visual PUs were graded according to the European Pressure Ulcer Advisory Panel and National Pressure Ulcer Advisory Panel ulcer grading system. Assessments took place preoperatively, then daily on the ward, beginning on day one postoperatively and continuing for three days or until discharge. RESULTS Of the 231 participants, who had a mean age of 57.50 years, 55.8% (n=129) were male. The most common comorbidity was cardiology/vascular (n=42; 18.2%). Just over half (52.4%; n=121) underwent orthopaedic surgery and 47.6% (n=110) underwent non-orthopaedic surgery; 70% (n=163) received a general anaesthetic and 43% (n=100) were in the supine decubitus position during surgery. PU incidence was 51% (n=116), according to SEM measurement, and 3% (n=7) according to VSA. Among the seven participants who developed a visual PU, 10 PUs at stage 1 developed (31%); some patients developed more than one PU. Of the participants who had assessments for three days postoperatively, 94% (n=61) had a persistently high SEM delta on day three. The variables that emerged as statistically significantly related to abnormal SEM measurement deltas among these participants were: surgery duration (p=0.038); having orthopaedic surgery (p=0.020); supine surgical position (p=0.003); spinal anaesthetic type (p=0.0001); and Waterlow and Braden mobility subscale day one postoperatively (p=0.0001). None of the variables had a statistically significant influence on abnormal VSA. CONCLUSION Surgical patients, because of immobility, are vulnerable to the action of compression and shear forces. These forces cause changes at a cellular level that trigger inflammation, which is a precursor to early tissue damage. SEM measurement can detect this tissue damage from the increase in the underlying tissue water content that results from inflammation. From the findings of this study, SEM measurement is very promising in the detection of early tissue damage in those at risk of PU development among the surgical population.
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Affiliation(s)
| | - Tom O'Connor
- RCSI University of Medicine and Health Sciences, School of Nursing and Midwifery, Ireland.,Skin Wounds and Trauma (SWaT) Research Centre, RCSI University of Medicine and Health Sciences, Ireland.,Lida Institute, Shanghai.,School of Nursing, Fakeeh College, Jeddah, Saudia Arabia
| | - Declan Patton
- RCSI University of Medicine and Health Sciences, School of Nursing and Midwifery, Ireland.,Skin Wounds and Trauma (SWaT) Research Centre, RCSI University of Medicine and Health Sciences, Ireland.,School of Nursing, Fakeeh College, Jeddah, Saudia Arabia.,Faculty of Science, Medicine and Health, University of Wollongong, Australia
| | - Helen Strapp
- Tallaght University Hospital, Ireland.,SWaT Research Network, RCSI University of Medicine and Health Sciences, Ireland
| | - Zena Moore
- RCSI University of Medicine and Health Sciences, School of Nursing and Midwifery, Ireland.,Skin Wounds and Trauma (SWaT) Research Centre, RCSI University of Medicine and Health Sciences, Ireland.,Faculty of Medicine, Nursing and Health Sciences, Monash University, Melbourne, Australia.,Faculty of Medicine and Health Sciences, Ghent University, Belgium.,Lida Institute, Shanghai.,University of Wales, Wales.,School of Nursing, Fakeeh College, Jeddah, Saudia Arabia
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Little JP, Green D, Izatt MT, Moloney G, Askin GN. Patient-Customised Theatre Mattress Supports for Spinal Surgery: A Pilot Study Presenting a Novel Engineering Virtual Design and Manufacturing Technique. J Med Device 2022. [DOI: 10.1115/1.4053604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
Abstract
Optimal patient positioning for spine surgery is vital for surgical success and the minimisation of complications intra-/post-operatively. In patients with complex co-morbidities, commercially available surgical positioning equipment is inadequate. To overcome this, a novel method was developed to create custom-fit patient-specific theatre mattresses for patients undergoing spine surgery. An innovative digital workflow involving 3D surface scanning, 3D simulation and computer aided design was developed to manufacture customised theatre supports with patient-specific requirements. These supports offered the surgeon an enhanced ability to relieve load bearing on prominent anatomical features or where desired, to tailor the support surface to the patient's anatomy for lengthy surgery. The bespoke theatre mattress was evaluated by whether the support resulted in a complication-free surgery. Using this new workflow, case examples for two patients with complex co-morbidities were described. The spine surgeon and anaesthetist reported the patient-specific custom mattresses were fit as per the required design, provided sufficient clearance around anatomical prominences and areas that required to be unloaded, had sufficient clearance for the anaesthetic method and cannulation, provided excellent surgical access and stability during surgery, and postoperatively no soft tissue overload over bony prominence and implanted devices. Positive patient outcomes after successful lengthy surgical interventions were associated with these patient-specific, contoured mattress supports. Future projects will seek to utilise this technology for other types of surgeries and intra-operative positioning requirements, and for a broader demographic of patients in both the paediatric and adult setting.
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Affiliation(s)
- J. Paige Little
- Biomechanics and Spine Research Group, Centre for Children's Health Research, Queensland University of Technology, Brisbane, Queensland, Australia
| | - Daniel Green
- Sealy of Australia, Wacol, Queensland, Australia
| | - Maree T. Izatt
- Biomechanics and Spine Research Group, Centre for Children's Health Research, Queensland University of Technology, Brisbane, Queensland, Australia
| | - Gregory Moloney
- Queensland Children's Hospital, Brisbane, Queensland, Australia
| | - Geoffrey N. Askin
- Biomechanics and Spine Research Group, Centre for Children's Health Research, Queensland University of Technology, Brisbane, Queensland, Australia; Queensland Children's Hospital, Brisbane, Queensland, Australia
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Aslan Basli A, Yavuz Van Giersbergen M. Comparison of interface pressures on three operating table support surfaces during surgery. J Tissue Viability 2021; 30:410-417. [PMID: 33994285 DOI: 10.1016/j.jtv.2021.04.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 04/20/2021] [Accepted: 04/23/2021] [Indexed: 10/21/2022]
Abstract
AIM OF THE STUDY To investigate the effect of support surface usage and positions on interface pressure during surgery. MATERIALS AND METHODS This randomized controlled experimental study was conducted between October 2018 and June 2019. The study included patients who had planned surgery in supine and prone positions. The sample size was 72 patients. Patients were assigned to three groups (gel support surface, viscoelastic support surface and standard operating table) according to the determined randomization table. During the surgery, the pressure in the patients' body was recorded. The statistics program IBM SPSS Statistics 25.0 packaged software was used in the analyses of data. RESULTS There was no statistically significant difference between the total body average interface pressure (mmHg) values between the supporting surfaces in the prone position. There was a statistically significant difference between the total body average interface pressure (mmHg) values between the support surfaces in the supine position, and the average interface pressure measured on the viscoelastic foam support surface was significantly lower than the gel support surface and the standard operating table. CONCLUSION In the study, the use of viscoelastic foam support surface was found to be more effective than the use of a standard operating table and gel support surface. Viscoelastic foam support surface is recommended for patients at risk for pressure injury in the operating room.
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Affiliation(s)
- Arzu Aslan Basli
- Department of Surgical Nursing, Manisa Celal Bayar University Faculty of Health Science, Manisa, Turkey.
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Neo TG, Koo SH, Chew STH, Png GK, Lacuesta MJ, Wu MYL, Tay RYC, Singh PA, Chandran R. A randomized controlled trial to compare the interface pressures of alternating pressure overlay with gel pad versus gel pad alone during prolonged surgery. J Tissue Viability 2021; 30:222-230. [PMID: 33612359 DOI: 10.1016/j.jtv.2021.02.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 02/01/2021] [Accepted: 02/03/2021] [Indexed: 12/22/2022]
Abstract
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.
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Affiliation(s)
- Tze Guan Neo
- Department of Nursing, Changi General Hospital, Singapore
| | - Seok Hwee Koo
- Clinical Trials and Research Unit, Changi General Hospital, Singapore
| | | | - Gek Kheng Png
- Department of Nursing, Changi General Hospital, Singapore
| | | | | | | | - Prit Anand Singh
- Department of Anaesthesia and Surgical Intensive Care Changi General Hospital, Singapore
| | - Rajkumar Chandran
- Department of Anaesthesia and Surgical Intensive Care Changi General Hospital, Singapore.
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8
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Avsar P, Moore Z, Patton D, O'Connor T, Budri AMV, Nugent L. Repositioning for preventing pressure ulcers: a systematic review and meta-analysis. J Wound Care 2020; 29:496-508. [DOI: 10.12968/jowc.2020.29.9.496] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Objective:The aim of this systematic review was to assess the effects of different repositioning regimens on pressure ulcer (PU) incidence in at-risk adult individuals without existing PUs.Method:Using systematic review methodology, randomised controlled trials (RCTs), including cluster-RCTs, prospective non-RCTs, pre–post-studies and interrupted-time-series studies were considered. Specifically explored was the impact of the frequency of repositioning, use of repositioning systems and use of turning teams. The search was conducted in January 2019, using PubMed, CINAHL, SCOPUS, Cochrane and EMBASE databases. Data were extracted using a pre-designed extraction tool and analysis was undertaken using RevMan.Results:A total of 530 records were returned, of which 16 met the inclusion criteria. Half of studies were conducted in intensive care units (50%). The mean sample size was 629±604 participants. Frequency of repositioning was explored in nine studies. PU incidence was 8% (n=221/2834) for repositioning every 2–3 hours, versus 13% (n=398/3050) for repositioning every 4–6 hours. The odds ratio (OR) was 0.75 (95% confidence interval (CI): 0.61–0.90, p=0.03), suggesting that there is a 25% reduction in the odds of PU development in favour of more frequent repositioning. Use of a repositioning system was explored in three studies. PU incidence was 2% (17/865) for the repositioning system, versus 5.5% (51/926) for care without using the repositioning system. The OR was 0.26 (95% CI: 0.05–1.29, p=0.10); this finding was not statistically significant. Use of a turning team was explored in two studies. PU incidence was 11% (n=22/200) with use of a turning team versus 20% (n=40/200) for usual care. The OR was 0.49 (95% CI: 0.27–0.86, p=0.01) suggesting that there is a 51% reduction in the odds of PU development in favour of use of a turning team. Using GRADE appraisal, the certainty of the evidence was assessed as low.Conclusion:The results of this systematic review indicate that more frequent repositioning and use of a turning team reduce PU incidence. However, given the low certainty of evidence, results should be interpreted with caution.
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Affiliation(s)
- Pinar Avsar
- School of Nursing and Midwifery and Skin Wounds and Trauma Research Centre, Royal College of Surgeons in Ireland University of Medicine and Science, Ireland
| | - Zena Moore
- School of Nursing and Midwifery and Skin Wounds and Trauma Research Centre, Royal College of Surgeons in Ireland University of Medicine and Science, Ireland
- Fakeeh College of Health Sciences, Jeddah, Saudi Arabia
- Lida Institute, Shanghai
- Monash University, Melbourne, Australia
- Faculty of Medicine and Health Sciences, Ghent University, Belgium
| | - Declan Patton
- School of Nursing and Midwifery and Skin Wounds and Trauma Research Centre, Royal College of Surgeons in Ireland University of Medicine and Science, Ireland
- Lida Institute, Shanghai
- Monash University, Melbourne, Australia
- Faculty of Science, Medicine and Health, University of Wollongong, Australia
| | - Tom O'Connor
- School of Nursing and Midwifery and Skin Wounds and Trauma Research Centre, Royal College of Surgeons in Ireland University of Medicine and Science, Ireland
- Monash University, Melbourne, Australia
- Faculty of Science, Medicine and Health, University of Wollongong, Australia
| | - Aglecia MV Budri
- School of Nursing and Midwifery and Skin Wounds and Trauma Research Centre, Royal College of Surgeons in Ireland University of Medicine and Science, Ireland
| | - Linda Nugent
- School of Nursing and Midwifery and Skin Wounds and Trauma Research Centre, Royal College of Surgeons in Ireland University of Medicine and Science, Ireland
- Fakeeh College of Health Sciences, Jeddah, Saudi Arabia
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Erdemir DS, Şenturan L. The Effect of Position Support During Orthopedic Surgery on Postoperative Pain: A Randomized Controlled Trial. Pain Manag Nurs 2020; 21:549-555. [PMID: 32712009 DOI: 10.1016/j.pmn.2020.06.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Revised: 01/17/2020] [Accepted: 06/09/2020] [Indexed: 10/23/2022]
Abstract
BACKGROUND Positional pain affect the patient's healing process after the operation. Anti-pressure positioning pads are medical products used to support the patient positioning during surgical procedures. AIMS The aim of the study was to examine pain related to positioning when anti-pressure gel pads and current visoelastic sponge support options are used during orthopedic surgical cases. DESIGN The randomized controlled experimental study. SETTINGS The operating room of an educational research hospital. PARTICIPANTS/SUBJECTS The study consisted of 100 patients (50 control group and 50 study group) undergoing surgery in a supine position. METHODS Information form, McGill Melzack Pain Questionnaire, and Visual Analogue Scale were used for data collection. Routine institutional policy was applied to the control group. Study group patients were additionally supported with antipressure position gel pads on the operating table. RESULTS The rate of pain presence in areas other than the operative area was significantly lower in the patients in the study group (p = .001). The patients in the control group reported that preoperative pain in the waist area increased to unbearable levels during operation. In addition, it was noted that the "addition of the anti-pressure gel pads" resulted in study group patients being mobilized significantly early (p = .001). CONCLUSIONS The conclusion of this study demonstrated that postoperative pain related to positioning, not the surgical procedure itself, was decreased when antipressure gel pads and viscoelastic sponge support were used together. An unanticipated benefit discovered during the study was earlier mobilization of the study group compared to the control group.
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Affiliation(s)
- Döndü Soyer Erdemir
- Baltalimanı Metin Sabancı Bone and Joint Diseases Education and Research Hospital, İstanbul, Turkey
| | - Leman Şenturan
- Baltalimanı Metin Sabancı Bone and Joint Diseases Education and Research Hospital, İstanbul, Turkey; Nursing Department, Biruni University, Istanbul, Turkey.
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10
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Haleem S, Mihai R, Rothenfluh DA, Reynolds J. Preventing iatrogenic facial pressure ulcers during spinal surgery: Prospective trial using a novel method and review of literature. Int Wound J 2020; 17:1391-1395. [PMID: 32476293 DOI: 10.1111/iwj.13402] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 04/28/2020] [Accepted: 05/01/2020] [Indexed: 12/01/2022] Open
Abstract
To assess the outcome of a novel method of preventing facial pressure ulcers in spinal surgery and a review of literature. A prospective trial using a novel method of facial protection using paraffin tulle gras dressing to cover bony prominences during spinal surgical procedures was performed. Patients were reviewed at 24 hours and 6 weeks. A telephone survey was also conducted post discharge. Over an 8-month period, 12 patients (7F:5M, age 9-72 years) underwent spine surgery for tumour stabilisation (n = 7), deformity correction (n = 4), and degenerative presentation (n = 1) with mean operative time of 472 minutes (range 150-785 minutes) in prone position. All patients were managed by the same team using an agreed protocol. No pressure ulcers were noted in our study. One patient sustained minimal erythema, which resolved after 24 hours. All patients were satisfied with the care received. Facial pressure ulcers though much reduced are still common in spinal surgery. The common factors are the long duration of surgery, shear, friction, moisture, and intrinsic factors. Our strategy of an appropriate facial support and constant vigilance helped eliminate the incidence of iatrogenic facial ulcers in spinal surgery.
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Affiliation(s)
- Shahnawaz Haleem
- Spinal Unit, Royal Orthopaedic Hospital NHS Foundation Trust, Birmingham, UK
| | - Ruxandra Mihai
- Oxford University Hospitals NHS Foundation Trust, Oxford, UK
| | | | - Jeremy Reynolds
- Oxford University Hospitals NHS Foundation Trust, Oxford, UK
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11
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Kayaba M, Ogata H, Park I, Ishihara A, Kawana F, Kokubo T, Fukusumi S, Hayashi M, Tokuyama K, Yanagisawa M, Satoh M. Improvement of Slow Wave Sleep Continuity by Mattress with Better Body Pressure Dispersal. SLEEP MEDICINE RESEARCH 2019. [DOI: 10.17241/smr.2019.00423] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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12
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Investigation of effects of urethane foam mattress hardness on skin and soft tissue deformation in the prone position using magnetic resonance imaging. J Tissue Viability 2019; 28:14-20. [DOI: 10.1016/j.jtv.2018.10.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 10/26/2018] [Accepted: 10/27/2018] [Indexed: 12/13/2022]
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13
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de Oliveira KF, Pires PDS, De-Mattia AL, Barichello E, Galvão CM, de Araújo CA, Barbosa MH. Influence of support surfaces on the distribution of body interface pressure in surgical positioning. Rev Lat Am Enfermagem 2018; 26:e3083. [PMID: 30517574 PMCID: PMC6280176 DOI: 10.1590/1518-8345.2692.3083] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Accepted: 09/11/2018] [Indexed: 11/30/2022] Open
Abstract
OBJECTIVE to evaluate the interface pressure (IP) of support surfaces (SSs) on bony prominences. METHOD a quasi-experimental study with repeated measures on each SS. Twenty healthy adult volunteers participated in the study. The participants were placed in the supine position on a standard operating table for evaluation of IP on the bony prominences of the occipital, subscapular, sacral, and calcaneal regions using sensors. Seven evaluations were performed for each bony prominence: one on a standard operating table, and the others on tables containing SSs made of viscoelastic polymer, soft foam, or sealed foam. Descriptive statistics and analysis of variance were used to analyze the data. RESULTS the mean IP was higher on the viscoelastic polymer-based SS compared to the other SSs (p<0.001). The mean IP was relatively lower on the density-33 sealed foam and density-18 soft foam. In addition, this variable was comparatively higher in the sacral region (42.90 mmHg) and the calcaneal region (15.35 mmHg). CONCLUSION IP was relatively lower on foam-based SSs, especially on density-18 soft foam and density-33 sealed foam. Nonetheless, IP was not reduced on the viscoelastic polymer SS compared to the control SS.
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Affiliation(s)
- Karoline Faria de Oliveira
- Universidade Federal do Triângulo Mineiro, Departamento de
Enfermagem na Assistência Hospitalar, Uberaba, Minas Gerais, Brazil
| | | | - Ana Lúcia De-Mattia
- Universidade Federal de Minas Gerais, Escola de Enfermagem, Belo
Horizonte, Minas Gerais, Brazil
| | - Elizabeth Barichello
- Universidade Federal do Triângulo Mineiro, Departamento de
Enfermagem na Assistência Hospitalar, Uberaba, Minas Gerais, Brazil
| | - Cristina Maria Galvão
- Universidade de São Paulo, Escola de Enfermagem de Ribeirão Preto,
PAHO/WHO Collaborating Centre for Nursing Research Development, Ribeirão Preto, SP,
Brazil
| | - Cleudmar Amaral de Araújo
- Universidade Federal de Uberlândia, Faculdade de Engenharia
Mecânica, Uberlândia, Minas Gerais, Brazil
| | - Maria Helena Barbosa
- Universidade Federal do Triângulo Mineiro, Departamento de
Enfermagem na Assistência Hospitalar, Uberaba, Minas Gerais, Brazil
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14
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de Oliveira KF, Nascimento KG, Nicolussi AC, Chavaglia SRR, de Araújo CA, Barbosa MH. Support surfaces in the prevention of pressure ulcers in surgical patients: An integrative review. Int J Nurs Pract 2017. [PMID: 28643855 DOI: 10.1111/ijn.12553] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
AIM To assess the scientific evidence about the types of support surfaces used in intraoperative surgical practice in the prevention of pressure ulcers due to surgical positioning. METHOD This is an integrative literature review. The electronic databases Cochrane, PubMed, Web of Science, Scopus, Lilacs, and CINAHL were used. The descriptors surgical patients, support surfaces, perioperative care, patient positioning, and pressure ulcer were used in the search strategy. Articles that addressed the use of support surfaces intraoperatively, published between 1990 and 2016, were selected. The PRISMA guidelines were used to structure the review. RESULTS Of 18 evaluated studies, most were in English, followed by Portuguese and Spanish; most were performed by nurses. The most commonly cited support surfaces were viscoelastic polymer, micropulse mattresses, gel based mattresses, and foam devices. CONCLUSION There are gaps in knowledge regarding the most efficient support surfaces and the specifications of the products used to prevent pressure ulcers due to surgical positioning.
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15
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Shah SB, Hariharan U, Bhargava AK, Rawal SK, Chawdhary AA. Robotic surgery and patient positioning: Ergonomics, clinical pearls and review of literature. TRENDS IN ANAESTHESIA AND CRITICAL CARE 2017. [DOI: 10.1016/j.tacc.2017.05.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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16
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Yeung CYC, Holmes DF, Thomason HA, Stephenson C, Derby B, Hardman MJ. An ex vivo porcine skin model to evaluate pressure-reducing devices of different mechanical properties used for pressure ulcer prevention. Wound Repair Regen 2016; 24:1089-1096. [PMID: 27717144 DOI: 10.1111/wrr.12481] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Accepted: 09/13/2016] [Indexed: 12/01/2022]
Abstract
Pressure ulcers are complex wounds caused by pressure- and shear-induced trauma to skin and underlying tissues. Pressure-reducing devices, such as dressings, have been shown to successfully reduce pressure ulcer incidence, when used in adjunct to pressure ulcer preventative care. While pressure-reducing devices are available in a range of materials, with differing mechanical properties, understanding of how a material's mechanical properties will influence clinical efficacy remains limited. The aim of this study was to establish a standardized ex vivo model to allow comparison of the cell protection potential of two gel-like pressure-reducing devices with differing mechanical properties (elastic moduli of 77 vs. 35 kPa). The devices also displayed differing energy dissipation under compressive loading, and resisted strain differently under constant load in compressive creep tests. To evaluate biological efficacy we employed a new ex vivo porcine skin model, with a confirmed elastic moduli closely matching that of human skin (113 vs. 119 kPa, respectively). Static loads up to 20 kPa were applied to porcine skin ex vivo with subsequent evaluation of pressure-induced cell death and cytokine release. Pressure application alone increased the percentage of epidermal apoptotic cells from less than 2% to over 40%, and increased cellular secretion of the pro-inflammatory cytokine TNF-alpha. Co-application of a pressure-reducing device significantly reduced both cellular apoptosis and cytokine production, protecting against cellular damage. These data reveal new insight into the relationship between mechanical properties of pressure-reducing devices and their biological effects. After appropriate validation of these results in clinical pressure ulcer prevention with all tissue layers present between the bony prominence and external surface, this ex vivo porcine skin model could be widely employed to optimize design and evaluation of devices aimed at reducing pressure-induced skin damage.
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Affiliation(s)
| | - David F Holmes
- Wellcome Trust Centre for Cell-Matrix Research, Faculty of Life Sciences, University of Manchester, Oxford Road, Manchester, United Kingdom
| | | | | | - Brian Derby
- School of Materials, University of Manchester, Manchester, United Kingdom
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17
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Lee WD, Lee JU, Kim MY, Lee LK, Park BS, Yang SM, Noh JW, Shin YS, Kim JH, Kwak TY, Lee TH, Park J, Kim J. Differences in the body pressure-related sensory changes between the floor and mattress in a static supine position for physiotherapy research: a randomized controlled pilot trial. J Phys Ther Sci 2016; 28:1086-91. [PMID: 27190432 PMCID: PMC4868192 DOI: 10.1589/jpts.28.1086] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Accepted: 12/18/2015] [Indexed: 11/24/2022] Open
Abstract
[Purpose] This study was performed to investigate the difference in body pressure-related sensory changes between the floor and mattress in a static supine position for physiotherapy research. [Subjects and Methods] To analyze body pressure, the Body Pressure Measurement System was used. Body pressure sensors were attached to mattresses and the floor beneath the subjects. The level of pain was evaluated using pain score tools before the static supine position was adopted, at 1, 5, 10, and 15 min, and in total for specific body points. [Results] In analysis of digitized images, there was no significant difference observed between floor and mattress body pressure values at the start position. However, the head pressure intensity was significantly higher than that of the other body parts. In analysis of pain scores, all body part pain scores except those for both legs were significantly higher for the floor than for the mattress. Furthermore, the pain scores of the floor group were significantly increased at minute 1 compared with those of the mattress group. [Conclusion] These results suggest that properties that change in a time-dependent manner and postural changes need to be carefully considered when applying physical therapy.
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Affiliation(s)
- Won-Deok Lee
- Laboratory of Health Science and Nanophysiotherapy,
Department of Physical Therapy, Graduate School, Yongin University, Republic of
Korea
| | - Jeong-Uk Lee
- Department of Physical Therapy, College of Health Science,
Honam University, Republic of Korea
| | - Mee-Young Kim
- Laboratory of Health Science and Nanophysiotherapy,
Department of Physical Therapy, Graduate School, Yongin University, Republic of
Korea
| | - Lim-Kyu Lee
- Laboratory of Health Science and Nanophysiotherapy,
Department of Physical Therapy, Graduate School, Yongin University, Republic of
Korea
- Commercializations Promotion Agency for R&D Outcomes,
Republic of Korea
| | - Byoung-Sun Park
- Laboratory of Health Science and Nanophysiotherapy,
Department of Physical Therapy, Graduate School, Yongin University, Republic of
Korea
| | - Seung-Min Yang
- Laboratory of Health Science and Nanophysiotherapy,
Department of Physical Therapy, Graduate School, Yongin University, Republic of
Korea
| | - Ji-Woong Noh
- Laboratory of Health Science and Nanophysiotherapy,
Department of Physical Therapy, Graduate School, Yongin University, Republic of
Korea
| | - Yong-Sub Shin
- Laboratory of Health Science and Nanophysiotherapy,
Department of Physical Therapy, Graduate School, Yongin University, Republic of
Korea
| | - Ju-Hyun Kim
- Department of Physical Therapy, College of Health Welfare,
Wonkwang Health Science University, Republic of Korea
| | - Taek-Yong Kwak
- Department of Taekwondo Instructor Education, College of
Martial Arts, Yongin University, Republic of Korea
| | - Tae-Hyun Lee
- Department of Combative Martial Arts Training, College of
Martial Arts, Yongin University, Republic of Korea
| | - Jaehong Park
- Department of Social Welfare, College of Public Health
& Welfare, Yongin University, Republic of Korea
| | - Junghwan Kim
- Department of Physical Therapy, College of Public Health
& Welfare, Yongin University, Republic of Korea
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18
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Kirkland-Walsh H, Teleten O, Wilson M, Raingruber B. Pressure Mapping Comparison of Four OR Surfaces. AORN J 2016; 102:61.e1-9. [PMID: 26119617 DOI: 10.1016/j.aorn.2015.05.012] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2014] [Revised: 09/23/2014] [Accepted: 05/14/2015] [Indexed: 11/19/2022]
Abstract
Mortality and health care costs associated with hospital-acquired pressure ulcers (HAPUs) increase yearly. After four hours of surgery, the risk of developing a pressure ulcer increases by 33% for every 30 minutes of surgery. Prolonged immobility, lower blood pressures, and increased surface interface pressure may hinder the blood supply delivered to the skin, eventually leading to pressure ulcers. We measured and compared four different OR surfaces to identify the most effective pressure redistribution surface for prolonged OR procedures. The best surface attributes that provide efficient pressure redistribution should have the following properties: the lowest average interface pressure, the lowest peak interface pressure, and the highest skin contact area. Although all surfaces had similar average interface pressures, the air-inflated static seat cushion had the best pressure redistribution properties in the sacral region compared with the other surfaces tested.
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19
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Yoshimura M, Iizaka S, Kohno M, Nagata O, Yamasaki T, Mae T, Haruyama N, Sanada H. Risk factors associated with intraoperatively acquired pressure ulcers in the park-bench position: a retrospective study. Int Wound J 2015; 13:1206-1213. [PMID: 26043765 DOI: 10.1111/iwj.12445] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Accepted: 02/22/2015] [Indexed: 11/28/2022] Open
Abstract
Patients undergoing surgery in the park-bench position are at high risk of developing intraoperatively acquired pressure ulcers (IAPUs). The purpose was to examine retrospectively risk factors associated with IAPUs in the park-bench position. This study was conducted at a general hospital during the period of September 2010 to September 2012. Twenty-one potential risk factors were evaluated using data obtained from the hospital database. IAPUs developed in 30 of 277 patients (11%). Perspiration was statistically found to be independently associated with IAPUs [OR 3·09, 95% confidence interval (Cl) 1.07-8·58, P = 0·037]. A length of surgery of more than 6 hours was identified to be likely associated with IAPUs (OR 2·64, 95% Cl 0·84-9·08, P = 0·095) compared with less than 6 hours. Furthermore, there was an interaction between the length of surgery and the core temperature; that is, when the length of surgery was more than 6 hours, a core temperature of more than 38·1°C at the end of surgery had a higher odds ratio (8·45, 95% Cl 3·04-27·46, P < 0·001) than that at a lower core temperature (3·20, 95% Cl 1·23-8·78, P = 0·017). These results suggest that perspiration and core temperature are preventable causative factors of pressure ulcers, even under conditions of prolonged surgery in the park-bench position.
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Affiliation(s)
- Mine Yoshimura
- Department of Gerontological Nursing/Wound Care Management, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.,Department of Nursing, Tokyo Metropolitan Police Hospital, Tokyo, Japan
| | - Shinji Iizaka
- Department of Gerontological Nursing/Wound Care Management, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Michihiro Kohno
- Department of Neurosurgery, Tokyo Medical University, Tokyo, Japan
| | - Osamu Nagata
- Department of Anesthesiology, Cancer Institute Hospital, Tokyo, Japan
| | - Takashi Yamasaki
- Department of Anesthesiology, Tokyo Metropolitan Police Hospital, Tokyo, Japan
| | - Tomoko Mae
- Department of Anesthesiology, Tokyo Metropolitan Police Hospital, Tokyo, Japan
| | - Naoko Haruyama
- Department of Anesthesiology, Tokyo Metropolitan Police Hospital, Tokyo, Japan
| | - Hiromi Sanada
- Department of Gerontological Nursing/Wound Care Management, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
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20
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Lumbley JL, Ali SA, Tchokouani LS. Retrospective review of predisposing factors for intraoperative pressure ulcer development. J Clin Anesth 2014; 26:368-74. [PMID: 25113424 DOI: 10.1016/j.jclinane.2014.01.012] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2013] [Revised: 12/30/2013] [Accepted: 01/10/2014] [Indexed: 11/19/2022]
Abstract
STUDY OBJECTIVE To evaluate the comorbidities and surgical factors involved in the genesis of intraoperative pressure ulcers. DESIGN Retrospective chart review. SETTING Anesthesiology department of a university medical center. MEASUREMENTS The charts of 222 patients with varying illness, who underwent an operation of at least two hours' duration, were analyzed retrospectively. Data on surgery type, case length, comorbidities, intraoperative surgical position, and area of ulceration were recorded. MAIN RESULTS Risk factors for intraoperative pressure ulcer development include surgical times of 4 hours or longer; comorbidities affecting tissue perfusion (namely, diabetes, hypertension, and nonspecific cardiac issues); supine placement during surgery; and abdominal, noncardiac thoracic, and orthopedic operations. Regions of the body most at risk for ulceration include the coccygeal/sacral region, the buttocks, genitalia, and heels. CONCLUSIONS Pressure ulcers are a costly, debilitating, and avoidable complication of surgery.
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Affiliation(s)
- Joshua L Lumbley
- Department of Anesthesiology, Ohio State Univeristy (OSU) Wexner Medical Center, Columbus, OH 43210-1267, USA.
| | - Syed A Ali
- Department of Anesthesiology, Ohio State Univeristy (OSU) Wexner Medical Center, Columbus, OH 43210-1267, USA; Ohio State University College of Medicine, Columbus, OH 43210, USA
| | - Loic S Tchokouani
- Department of Anesthesiology, Ohio State Univeristy (OSU) Wexner Medical Center, Columbus, OH 43210-1267, USA; Ohio State University College of Medicine, Columbus, OH 43210, USA
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21
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Investigating the role of capacitive coupling between the operating table and the return electrode of an electrosurgery unit in the modification of the current density distribution within the patients' body. Biomed Eng Online 2013; 12:80. [PMID: 23937865 PMCID: PMC3751592 DOI: 10.1186/1475-925x-12-80] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2013] [Accepted: 08/02/2013] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Electrosurgery units are widely employed in modern surgery. Advances in technology have enhanced the safety of these devices, nevertheless, accidental burns are still regularly reported. This study focuses on possible causes of sacral burns as complication of the use of electrosurgery. Burns are caused by local densifications of the current, but the actual pathway of current within patient's body is unknown. Numerical electromagnetic analysis can help in understanding the issue. METHODS To this aim, an accurate heterogeneous model of human body (including seventy-seven different tissues), electrosurgery electrodes, operating table and mattress was build to resemble a typical surgery condition. The patient lays supine on the mattress with the active electrode placed onto the thorax and the return electrode on his back. Common operating frequencies of electrosurgery units were considered. Finite Difference Time Domain electromagnetic analysis was carried out to compute the spatial distribution of current density within the patient's body. A differential analysis by changing the electrical properties of the operating table from a conductor to an insulator was also performed. RESULTS Results revealed that distributed capacitive coupling between patient body and the conductive operating table offers an alternative path to the electrosurgery current. The patient's anatomy, the positioning and the different electromagnetic properties of tissues promote a densification of the current at the head and sacral region. In particular, high values of current density were located behind the sacral bone and beneath the skin. This did not occur in the case of non-conductive operating table. CONCLUSION Results of the simulation highlight the role played from capacitive couplings between the return electrode and the conductive operating table. The concentration of current density may result in an undesired rise in temperature, originating burns in body region far from the electrodes. This outcome is concordant with the type of surgery-related sacral burns reported in literature. Such burns cannot be immediately detected after surgery, but appear later and can be confused with bedsores. In addition, the dosimetric analysis suggests that reducing the capacity coupling between the return electrode and the operating table can decrease or avoid this problem.
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Bulfone G, Marzoli I, Quattrin R, Fabbro C, Palese A. A longitudinal study of the incidence of pressure sores and the associated risks and strategies adopted in Italian operating theatres. J Perioper Pract 2012; 22:50-6. [PMID: 22724304 DOI: 10.1177/175045891202200202] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
To explore the incidence of intraoperative pressure sores, the associated risk factors and the preventive strategies adopted by nurses, we adopted a longitudinal study in a 900-bed teaching hospital with multiple operating theatres, located in the North of Italy. Patients who underwent major surgery were evaluated four times: at the moment of operating theatre admission, at operating theatre discharge, and on their third and sixth postoperative day. Of the patients included (n = 102) who had an average age of 62.3 years (range 20-87), 12.7% (13/102) developed a pressure ulcer in the operating theatre; 46.1% (6/13) of these ulcers were still present on the third postoperative day. Some health conditions (diabetes mellitus, cardiac diseases) and intra-operative factors (lying on the operating table for more than 6.15 hours, intraoperative hypothermia) are associated with the occurrence of pressure sores.
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24
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Primiano M, Friend M, McClure C, Nardi S, Fix L, Schafer M, Savochka K, McNett M. Pressure ulcer prevalence and risk factors during prolonged surgical procedures. AORN J 2012; 94:555-66. [PMID: 22118201 DOI: 10.1016/j.aorn.2011.03.014] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2010] [Revised: 03/19/2011] [Accepted: 03/27/2011] [Indexed: 11/27/2022]
Abstract
Pressure ulcer formation related to positioning while in the OR increases the length of hospital stay and hospital costs, but there is little evidence documenting how positioning devices used in the OR influence pressure ulcer development when examined with traditional risk factors. The aim of this prospective cohort study was to identify the prevalence of and risk factors associated with pressure ulcer development among patients undergoing surgical procedures lasting longer than three hours. Participants included all adult same-day admission patients scheduled for a three-hour surgical procedure during an eight-month period (N = 258). Data were gathered preoperatively, intraoperatively, and postoperatively on pressure ulcer risk factors. Bivariate analyses indicated that the type of positioning (ie, heels elevated) (χ(2) = 7.897, P = .048), OR bed surface (ie, foam table pad) (χ(2) = 15.848, P = .000), skin assessment in the postanesthesia care unit (χ(2) = 41.652, P = .000), and male gender (χ(2) = 6.984, P = .030) were associated with pressure ulcer development. Logistic regression analyses indicated that the use of a foam pad (β = 2.691, P = .024) and a lower day-one Braden score (β = .244, P = .003) were predictive of pressure ulcers.
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Affiliation(s)
- Mike Primiano
- Department of Nursing, MetroHealth Medical Center, Cleveland, OH, USA
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Pham B, Teague L, Mahoney J, Goodman L, Paulden M, Poss J, Li J, Sikich NJ, Lourenco R, Ieraci L, Carcone S, Krahn M. Support surfaces for intraoperative prevention of pressure ulcers in patients undergoing surgery: A cost-effectiveness analysis. Surgery 2011; 150:122-32. [DOI: 10.1016/j.surg.2011.03.002] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2010] [Accepted: 03/21/2011] [Indexed: 10/18/2022]
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Wu T, Wang ST, Lin PC, Liu CL, Chao YFC. Effects of Using a High-Density Foam Pad Versus a Viscoelastic Polymer Pad on the Incidence of Pressure Ulcer Development During Spinal Surgery. Biol Res Nurs 2010; 13:419-24. [DOI: 10.1177/1099800410392772] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The purpose of this study was to evaluate the effect of high-density foam (HDF) pads versus viscoelastic polymer (VP) pads in the prevention of pressure ulcer formation during spinal surgery and their cost-effectiveness. Subjects were 30 patients who underwent spinal surgery for more than 3 hr in a prone position. One side of the chest and iliac crest was padded with HDF pads and the other side was padded with VP pads. An Xsensor® pressure measuring sheet was placed between the pad and the patient. Bilateral chest and iliac crest points were observed for the presence of pressure ulcers at 30 min after the operation. Results showed that a pressure ulcer had occurred at 9 of 120 compression points (7.5% of the total), 30 min after the operation. Risk evaluation showed that female gender, weight <50 kg, and body mass index (BMI) <18 kg/m2 as well as location (the iliac crest) were all risk factors for development of pressure ulcers. The most significant factor was BMI <18 kg/m2. The average and peak pressures measured at the points padded with the VP pads were significantly lower than those padded with the HDF pads. However, there was no significant difference between the VP and the HDF pads regarding ulcer prevention. Because the cost of a VP pad is 250 times greater than that of an HDF pad of similar size, the VP pad should only be considered for use in high-risk patients.
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Affiliation(s)
- Tsokuang Wu
- Nursing Department, Veteran General Hospital, Taipei, Taiwan
| | - Shin-Tien Wang
- Orthopedic Department, Veteran General Hospital Taipei, Taipei, Taiwan
| | - Pi-Chu Lin
- Nursing Department, Taipei Medical University Hospital, Taipei, Taiwan
- School of Nursing, College of Nursing, Taipei Medical University, Taipei, Taiwan
| | - Chien-Lin Liu
- Orthopedic Department, Veteran General Hospital Taipei, Taipei, Taiwan
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Does Pressure Cause Pressure Ulcers? An Inquiry Into the Etiology of Pressure Ulcers. J Am Med Dir Assoc 2010; 11:397-405. [DOI: 10.1016/j.jamda.2010.03.007] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2010] [Accepted: 03/09/2010] [Indexed: 11/22/2022]
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Wai A, Foo S, Huang W, Biswas J, Hsia CC, Liou K, Yap P. Lying Posture Classification for Pressure Ulcer Prevention. JOURNAL OF HEALTHCARE ENGINEERING 2010. [DOI: 10.1260/2040-2295.1.2.217] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Gerhardt LC, Mattle N, Schrade GU, Spencer ND, Derler S. Study of skin-fabric interactions of relevance to decubitus: friction and contact-pressure measurements. Skin Res Technol 2008; 14:77-88. [PMID: 18211605 DOI: 10.1111/j.1600-0846.2007.00264.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND/PURPOSE Prolonged pressure as well as friction and shear forces at the skin-textile interface are decisive physical parameters in the development of decubitus. The present article describes the contact phenomena at the skin-textile interface and the development of a purpose-built textile friction analyser (TFA) for the tribological assessment of skin-fabric interactions, in connection with decubitus prevention. METHODS Interface pressure distributions were recorded in the pelvic and femoral regions between supine persons and a foam mattress. Fabrics made of various natural and synthetic yarns were investigated using the TFA. A vertical load of 7.7 kPa was applied to the swatches, simulating high interface pressures at the skin-fabric interface and clinical conditions of bedridden persons. Fabrics were rubbed in reciprocating motions against a validated skin-simulating material to determine static as well as dynamic friction coefficients (COFs). RESULTS Maximum contact pressures ranged from 5.2 to 7.7 kPa (39-58 mmHg) and exceeded the capillary closure pressure (32 mmHg) in all investigated bedding positions. For both COFs, a factor of 2.5 was found between the samples with the lowest and highest values. Our results were in a similar range to COFs found in measurements on human skin in vivo. The results showed that our test method can detect differences of 0.01 in friction coefficients. CONCLUSION TFA measurements allow the objective and reliable study of the tribology of the skin-textile biointerface and will be used to develop medical textiles with improved performance and greater efficacy for decubitus prevention.
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Affiliation(s)
- L-C Gerhardt
- EMPA, Laboratory for Protection and Physiology, Swiss Federal Laboratories for Materials Testing and Research, St Gallen, Switzerland.
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30
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Clinical Issues. AORN J 2007. [DOI: 10.1016/j.aorn.2007.10.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Vanderwee K, Grypdonck M, Defloor T. Non-blanchable erythema as an indicator for the need for pressure ulcer prevention: a randomized-controlled trial. J Clin Nurs 2007; 16:325-35. [PMID: 17239068 DOI: 10.1111/j.1365-2702.2005.01429.x] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
AIMS AND OBJECTIVES To evaluate whether postponing preventive measures until non-blanchable erythema appears will actually lead to an increase in incidence of pressure ulcers (grades 2-4) when compared with the standard risk assessment method. BACKGROUND To distinguish patients at risk for pressure ulcers from those not at risk, risk assessment scales are recommended. These scales have limited predictive validity. The prevention of further deterioration of non-blanchable erythema (grade 1 pressure ulcer) instead of the standard way of assigning prevention could be a possible new approach. DESIGN Randomized-controlled trial. METHODS Patients admitted to surgical, internal or geriatric wards (n = 1617) were included. They were randomly assigned to an experimental and a control group. In the experimental group (n = 826), prevention was started when non-blanchable erythema appeared, in the control group (n = 791) when the Braden score was <17 or when non-blanchable erythema appeared. In both groups, patients received identical prevention, either by using a polyethylene-urethane mattress in combination with turning every four hours or by using an alternating pressure air mattress. Pressure points were observed daily and classified according to the four grades of the European Pressure Ulcer Advisory Panel. The Braden scale was scored every three days. RESULTS In the experimental group, 16% of patients received preventive measures, in the control group 32%. The pressure ulcer incidence (grades 2-4) was not significantly different between the experimental (6.8%) and control group (6.7%). CONCLUSION Significantly fewer patients need preventive measures when prevention is postponed until non-blanchable erythema appears and those patients did not develop more pressure ulcers than patients who received prevention based on the standard risk assessment method. RELEVANCE TO CLINICAL PRACTICE Using the appearance of non-blanchable erythema to allocate preventive measures leads to a considerable reduction of patients in need of prevention without resulting in an increase in pressure ulcers.
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Affiliation(s)
- Katrien Vanderwee
- Nursing Science, Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium.
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Vanderwee K, Grypdonck MHF, De Bacquer D, Defloor T. Effectiveness of turning with unequal time intervals on the incidence of pressure ulcer lesions. J Adv Nurs 2007; 57:59-68. [PMID: 17184374 DOI: 10.1111/j.1365-2648.2006.04060.x] [Citation(s) in RCA: 85] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
AIM This paper reports a study investigating whether repositioning patients lying on a pressure-reducing mattress alternately for 2 hours in a lateral position and 4 hours in a supine position reduces the incidence of pressure ulcers in comparison with repositioning every 4 hours. BACKGROUND Repositioning is commonly recognized as an effective preventive measure. Almost no research has been carried out so far on the necessary turning frequencies to prevent pressure ulcer lesions. The pressure is higher in a lateral than in a supine position. METHOD A two-arm randomized controlled trial was conducted in 16 Belgian elder care nursing homes. Patients with non-blanchable erythema were randomly assigned to either an experimental or a control group. In the experimental group (n = 122), patients were repositioned alternately 2 hours in a lateral position and 4 hours in a supine position. In the control group (n = 113), patients were repositioned every 4 hours. The sitting protocol was identical in both groups. Pressure areas were observed daily and classified according to the four grades of the European Pressure Ulcer Advisory Panel. RESULTS In the experimental group, 16.4% patients developed a pressure ulcer lesion (grade 2-4), while 21.2% did so in the control group. The incidence was not statistically significantly different between the two groups (P = 0.40). The severity (P = 0.65) and location (P = 0.19) of pressure ulcer lesions, and the time to developing them (P = 0.29) were also similar in both groups. No patient developed a pressure ulcer at the hips. A considerable number of patients changed from a lateral to a supine position between the turning intervals. CONCLUSION More frequent repositioning on a pressure-reducing mattress does not necessarily lead to fewer pressure ulcer lesions and consequently cannot be considered as a more effective preventive measure.
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Affiliation(s)
- K Vanderwee
- Epidemiology and Statistics, Ghent University, Gent, Belgium.
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King CA, Bridges E. Comparison of Pressure Relief Properties of Operating Room Surfaces. ACTA ACUST UNITED AC 2006. [DOI: 10.1016/j.cpen.2006.05.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Sewchuk D, Padula C, Osborne E. Prevention and Early Detection of Pressure Ulcers in Patients Undergoing Cardiac Surgery. AORN J 2006; 84:75-96. [PMID: 16881492 DOI: 10.1016/s0001-2092(06)60100-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Absence of pressure ulcers is increasingly being used as an indicator of quality nursing care, based on the premise that pressure ulcers are preventable. This retrospective study examined the occurrence, presentation, and timing of pressure ulcer development in 150 patients undergoing cardiac surgery. Pressure ulcer incidents were recorded in groups of patients who underwent surgery with use of a standard foam OR bed mattress; use of a fluid, pressure-reducing OR bed mattress; or use of a fluid, pressuring-reducing mattress after a comprehensive educational program on pressure ulcer prevention was presented to RNs. Tcers decreased when the fluid, pressure-reducing OR bed mattresses were used in conjunction with the comprehensive RN education program.
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DeVocht JW, Wilder DG, Bandstra ER, Spratt KF. Biomechanical evaluation of four different mattresses. APPLIED ERGONOMICS 2006; 37:297-304. [PMID: 16169512 DOI: 10.1016/j.apergo.2005.07.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2003] [Revised: 06/27/2005] [Accepted: 07/15/2005] [Indexed: 05/04/2023]
Abstract
This study provided an objective, biomechanical comparison of four "top of the line" mattresses from four different manufacturers using two different measurements. One, which has been used in other studies, was pressure distribution patterns-evaluating maximum pressures generated by an individual lying supine on the mattresses. The other was a novel approach developed specifically for this study-quantifying the degree of spinal distortion induced when in the side posture position. Eighteen normal adult males of similar height but in three different weight groups were tested using both of these approaches on each of four mattresses. As expected, greater maximum pressure directly related to subject's weight group and was greater in the pelvic compared to the thoracic region. One mattress did induce significantly lower maximum pressures than the other three in both the pelvic and thoracic regions. Spinal distortion was not reliably different across the four mattresses in five of the seven spine regions evaluated. However, at the T1/T3 and the T6/T8 spinal segments, inconsistent but statistically significant separation between some mattresses was observed.
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Affiliation(s)
- James W DeVocht
- Palmer Center for Chiropractic Research, 741 Brady Street, Davenport, IA 52803, USA; University of Iowa, Iowa City, IA, USA
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Feuchtinger J, de Bie R, Dassen T, Halfens R. A 4-cm thermoactive viscoelastic foam pad on the operating room table to prevent pressure ulcer during cardiac surgery. J Clin Nurs 2006; 15:162-7. [PMID: 16422733 DOI: 10.1111/j.1365-2702.2006.01293.x] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
AIMS AND OBJECTIVES In this experimental study, a 4-cm thermoactive viscoelastic foam overlay and a heating source on the operating room table was compared with the standard operating room table with a heating source for the effect on the postoperative pressure ulcer incidence in cardiac surgery patients. BACKGROUND Pressure ulcer incidence in the cardiac surgery population is reported to be up to 29.5%. The prolonged compressive forces from lying on the operating room table are one source of pressure ulcer development in this population. Pressure-reducing devices on the operating room (OR)-table should reduce the patients' interface pressure and thus the hazard of skin breakdown. METHODS A randomized controlled trial was performed to test the effect of a 4-cm thermoactive viscoelastic foam overlay with a water-filled warming mattress on the OR-table (test OR-table) compared with the standard OR-table (a water-filled warming mattress, no pressure-reducing device) on the postoperative pressure ulcer incidence in cardiac surgery patients. INSTRUMENTS The pressure ulcer classification system of the European Pressure Ulcer Advisory Panel (EPUAP) was used for pressure ulcer grading. RESULTS The results show that patients lying on the 4-cm thermoactive viscoelastic foam overlay suffer slightly more pressure ulcer (17.6%) than patients on the standard OR-table without the foam overlay (11.1%). Because of the clinical relevance of the results, the randomized controlled trial was terminated after 175 patients at the interim analysis although the power calculation stated 350 patients. CONCLUSIONS The combination of a 4-cm viscoelastic foam overlay and a warming source cannot be recommended for pressure ulcer prevention on the operating room table. RELEVANCE TO CLINICAL PRACTICE Foam overlays are used to prevent pressure ulcers in patients. It is necessary to use such devices according to patient safety and use of resources.
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Ursi ES, Gavão CM. Prevenção de lesões de pele no perioperatório: revisão integrativa da literatura. Rev Lat Am Enfermagem 2006; 14:124-31. [PMID: 16532249 DOI: 10.1590/s0104-11692006000100017] [Citation(s) in RCA: 146] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
A tomada de decisão do enfermeiro na sua prática diária necessita ser fundamentada em conhecimento científico. A prática baseada em evidências é uma abordagem que preconiza a utilização de resultados de pesquisas na prática clínica, sendo a revisão integrativa um de seus recursos. A presente investigação é uma revisão integrativa que teve como objetivo avaliar as evidências disponíveis sobre as intervenções eficazes de enfermagem para a prevenção de lesões de pele no paciente cirúrgico, no período transoperatório, ou em decorrência desse. Para a seleção dos artigos utilizou-se duas bases de dados, Cinalh e Medline, e a amostra desta revisão constituiu-se de 14 artigos. Após análise dos artigos incluídos na revisão os resultados dos estudos apontaram que os dispositivos considerados mais eficazes na prevenção de lesões de pele foram em ordem descrecente o colchão de ar micropulsante, cobertura de colchão de polímero de visco elástico seco e almofadas de gel, sucessivamente.
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Gunningberg L. Are patients with or at risk of pressure ulcers allocated appropriate prevention measures? Int J Nurs Pract 2005; 11:58-67. [PMID: 15752320 DOI: 10.1111/j.1440-172x.2005.00503.x] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The aims of the study were to investigate the risk for and prevalence of pressure ulcers in different medical care groups, to discover if patients at risk for or with pressure ulcers are allocated appropriate pressure ulcer preventions and to investigate which variables are associated with appropriate pressure ulcer preventions. A cross-sectional survey design was used and followed the methodology developed by the European Pressure Ulcer Advisory Panel. A total of 612 patients participated in the study. The prevalence of pressure ulcers was greatest in geriatric care, followed by intensive care, acute care and neurological care. The majority of patients at risk for or with pressure ulcers did not receive appropriate preventative measures, either while they were in bed or in a chair. Significant variables associated with appropriate preventions in bed were intensive care, geriatric care, a low Braden score, a low score in the subscale activity and a long hospital stay.
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Affiliation(s)
- Lena Gunningberg
- Department of Public Health and Caring Sciences, Section of Caring Sciences, Uppsala University, Uppsala, Sweden.
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Hartley L. Reducing pressure damage in the operating theatre. BRITISH JOURNAL OF PERIOPERATIVE NURSING : THE JOURNAL OF THE NATIONAL ASSOCIATION OF THEATRE NURSES 2003; 13:249-51, 253-4. [PMID: 12836232 DOI: 10.1177/175045890301300602] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Pressure sores occurring in surgical patients are often not attributed to time spent in the operating theatre. Initial underlying damage can occur whilst undergoing a surgical procedure but may not become apparent until hours or days later. In carrying out a literature review, the author concluded that such a fundamental aspect of nursing care in the operating theatre is a low priority and that nurses could do more in terms of pressure relief for their patients. The author concludes by identifying implications for practice.
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Lewis M, Pearson A, Ward C. Pressure ulcer prevention and treatment: transforming research findings into consensus based clinical guidelines. Int J Nurs Pract 2003; 9:92-102. [PMID: 12694478 DOI: 10.1046/j.1322-7114.2002.00405.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The translation of research findings into practice guidelines is an important aspect in maintaining the currency of practice and adding value to research. While there has been a large amount of published literature regarding the treatment and prevention of pressure ulcers, very few studies have attempted to provide clear clinical guidelines. The present study proposes a model to transform research into clinical guidelines whilst developing a series of guidelines that can be applied to a variety of clinical settings.
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Affiliation(s)
- Matthew Lewis
- School of Nursing and Midwifery, La Trobe University, Bundoora, Victoria, Australia
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Abstract
Patients undergoing surgery are prone to develop pressure ulcers during the surgical procedure. The aim of the study was to gain insight into the problem by describing the incidence, clinical features and progression of pressure ulcers and closed pressure ulcers in patients undergoing surgery lasting more than 4 hours. A prospective follow-up study was conducted in a university hospital in the Netherlands. Two-hundred and eight patients from nine surgical specialities were included in the study. The skin of patients was observed the evening before surgery and, if the patient's condition allowed it, directly postoperatively and subsequently daily for 14 days or until discharge, whichever occurred first. When patients developed a pressure ulcer they were observed daily until discharge or until the pressure ulcer had healed. The size and colour of the lesion, stage and skin condition were described every day. In addition, data were collected concerning the operation, postoperative period, and general characteristics. Forty-four patients (21.2%) developed 70 pressure ulcers in the first 2 days following surgery. Twenty-one pressure ulcers deteriorated in the days following surgery. More than half (52.9%) of the lesions developed on the heels, and 15.7% developed in the sacral area. Twenty-five patients (12%) were impaired by the lesions they developed. None of the patients in the study developed closed pressure ulcers. Pressure ulcer development during a surgical procedure is a serious problem. Therefore, preventive measures should be taken during surgery and the first few days afterwards, until the patient is able to mobilize independently.
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Affiliation(s)
- Lisette Schoonhoven
- Julius Centre for General Practice and Patient Oriented Research, University Medical Centre Utrecht, Utrecht, The Netherlands.
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Marino J. Tempur-Med: choosing the correct pressure area care system. BRITISH JOURNAL OF NURSING (MARK ALLEN PUBLISHING) 2001; 10:1364-7. [PMID: 11873231 DOI: 10.12968/bjon.2001.10.20.9356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The prevention and treatment of pressure ulcers is a major concern for hospital nursing staff. Selection of the appropriate equipment for pressure area care can prove difficult, as a great many different systems are available. Tempur-Med provides a simple and cost-effective solution to this problem with a range of products ensuring continuity of care in all areas of the hospital.
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Affiliation(s)
- J Marino
- Royal Liverpool and Broadgreen Hospital, Liverpool
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