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A randomized trial comparing the intraoperative durability of double-gloving with Biogel® surgical gloves to 3 comparators

Published online by Cambridge University Press:  10 October 2024

Michelle DollOpen the ORCID record for Michelle Doll[Opens in a new window],
Asmaa Namoos,
Le Kang,
Jibanananda Satpathy,
Michael J. Feldman,
Anthony Cassano,
Jaime Bohl,
Michel B. AboutanosOpen the ORCID record for Michel B. Aboutanos[Opens in a new window],
Brian Cameron and
Jason Kim
...Show all authors
Michelle Doll*
Affiliation:
Virginia Commonwealth University School of Medicine, Richmond, VA, USA
Asmaa Namoos
Affiliation:
Virginia Commonwealth University School of Medicine, Richmond, VA, USA
Le Kang
Affiliation:
Virginia Commonwealth University School of Medicine, Richmond, VA, USA
Jibanananda Satpathy
Affiliation:
Virginia Commonwealth University School of Medicine, Richmond, VA, USA
Michael J. Feldman
Affiliation:
Virginia Commonwealth University School of Medicine, Richmond, VA, USA
Anthony Cassano
Affiliation:
Virginia Commonwealth University School of Medicine, Richmond, VA, USA
Jaime Bohl
Affiliation:
Virginia Commonwealth University School of Medicine, Richmond, VA, USA
Michel B. Aboutanos
Affiliation:
Virginia Commonwealth University School of Medicine, Richmond, VA, USA
Brian Cameron
Affiliation:
Virginia Commonwealth University School of Medicine, Richmond, VA, USA
Jason Kim
Affiliation:
Virginia Commonwealth University School of Medicine, Richmond, VA, USA
Celine Asbury
Affiliation:
Virginia Commonwealth University School of Medicine, Richmond, VA, USA
Mahdee Haque
Affiliation:
Virginia Commonwealth University School of Medicine, Richmond, VA, USA
Olivia Hess
Affiliation:
Virginia Commonwealth University School of Medicine, Richmond, VA, USA
Henrik Ahlbom
Affiliation:
Molnlycke Healthcare, Gothenburg, Sweden
Gonzalo Bearman
Affiliation:
Virginia Commonwealth University School of Medicine, Richmond, VA, USA
*
Corresponding author: Michelle Doll; Email: michelle.doll@vcuhealth.org

Abstract

Objective:

To determine and compare the intraoperative durability of 4 major surgical glove brands.

Design, Setting, and Participants:

This study is a randomized open-label clinical trial in which surgical gloves from 4 manufacturers are randomized to 5 surgical subspecialty study groups: (1) orthopedic surgery, (2) neurosurgery, (3) colorectal surgery, (4) trauma or acute general surgery, and (5) cardiac and plastic surgeries. The study was divided into 10 periods, with a cross-over design, and was conducted at a tertiary care academic medical center. Participants were licensed and certified physicians, physicians-in-training, scrub nurses, or technicians working within the sterile field.

Interventions:

Participants from each study group were randomly assigned to 1 of 4 surgical glove manufacturer types and subsequently rotated through the other 3 glove brands such that each participant acted as their own control in the sequential cross-over design.

Main Outcomes and Measures:

The primary outcome was to determine and compare the intraoperative failure rate of Biogel® Sterile Surgical undergloves against sterile surgical undergloves from 3 other manufacturers, both as a combined competitor group and individually.

Results:

There were no differences between brands with respect to the primary outcome of underglove intraoperative failures. Brand 1 wearers were slightly more likely to detect glove failures when they occurred.

Conclusion:

The durability of surgical gloves intraoperatively is similar across 4 major glove manufacturers. Detection of intraoperative failures is infrequent, though specific glove characteristics may promote enhanced detection. Recognition of glove perforations intraoperatively is important in the maintenance of a maximally sterile field.

Trial Registration:

ClinicalTrials.gov Identifier: NCT03344354.

Information

Type
Original Article
Information
Antimicrobial Stewardship & Healthcare Epidemiology , Volume 4 , Issue 1 , 2024, e169
Creative Commons
Creative Common License - CCCreative Common License - BY
This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution and reproduction, provided the original article is properly cited.
Copyright
© The Author(s), 2024. Published by Cambridge University Press on behalf of The Society for Healthcare Epidemiology of America

Introduction

Sterile surgical gloves serve a critical barrier role at the interface between healthcare providers and patients during invasive procedures. Surgical glove integrity at this interface has been the subject of intense study for decades. Reference Albin, Bunegin, Duke, Ritter and Page1 Perforation rates are well documented, albeit highly variable, Reference Albin, Bunegin, Duke, Ritter and Page1,Reference Tanner and Parkinson2 depending on factors such as type of surgery, Reference Bekele, Makonnen, Tesfaye and Taye3–Reference Tlili, Belgacem and Sridi5 duration of surgery, Reference Tlili, Belgacem and Sridi5–Reference Partecke, Goerdt and Langner8 role of the glove wearer, Reference Goldman, Haug, Owen, Wayne and Golladay4,Reference Sayin, Yilmaz and Baydur7 latex content, Reference Albin, Bunegin, Duke, Ritter and Page1,Reference Muto, Sistrom, Strain and Farr6 and thickness of gloves, Reference Tanner and Parkinson2,Reference Tlili, Belgacem and Sridi5 manufacturer, Reference Muto, Sistrom, Strain and Farr6 and method of perforation detection. Reference Albin, Bunegin, Duke, Ritter and Page1,Reference Tanner and Parkinson2 The implications of these perforations remain a subject of debate, Reference Geelhoed9 as it is difficult to attribute surgical site infections (SSIs) to a specific source. Nevertheless, there are multiple examples of SSI outbreaks with epidemiologic linkage to specific organisms in the hands of a surgical team member. Reference Kampf and Kramer10 In an era of increased scrutiny of SSI rates, the efficacy of this critical barrier is a primary concern for surgical stakeholders.

Surgical gloves have evolved since many of the existing studies of glove integrity were performed. Non-latex gloves make up the majority of gloves in use at surgical centers in the United States and an increasing proportion internationally as well. Reference Critchley and Pemberton11,Reference Crepy12 In addition, double-gloving is now a standard in operating rooms in the United States as this practice is associated with significantly decreased rates of inner glove perforation without compromising glove functionality. Reference Tanner and Parkinson2,Reference Tlili, Belgacem and Sridi5 It is important to note that the majority of perforations of surgical gloves during procedures are not detected by the glove wearer. Reference Tlili, Belgacem and Sridi5,Reference Sayin, Yilmaz and Baydur7,Reference Harnoss, Partecke, Heidecke, Hübner, Kramer and Assadian13 Indicator glove systems, where the inner glove is a striking color contrast to the outer glove, increase wearer detection of glove perforations, allowing providers the opportunity to change gloves when breaches in the outer barrier occur. Reference Tanner and Parkinson2,Reference Meakin, Gilman, Parsons, Burton and Langley-Hobbs14

Standardized surgical glove integrity studies are limited in the current medical literature. Typically, gloves under study are the default products in use in a clinical setting or a small supply of intentionally chosen gloves for investigation in a laboratory setting. Variability in gloves by style and manufacturer limits the generalizability of these strategies. Reference Muto, Sistrom, Strain and Farr6 Clearly, new studies to understand glove perforation risks in the modern surgical era would be valuable.

We conducted an open-label randomized clinical trial using products from 4 major glove manufacturers to better define and compare surgical glove integrity during major operative procedures. The full protocol can be accessed as Supplement 1.

The primary objective of the investigation is to determine and compare the intraoperative failure rate of Biogel® (Brand 1) surgical undergloves against undergloves from 3 other manufacturers, both as a combined competitor group and individually.

The secondary objectives include:

  • Comparison of failure rates of overgloves of Brand 1 with those of 3 other manufacturers, both as a combined competitor group and individually.

  • Determination and comparison of perforation rates of undergloves and overgloves of Brand 1 with those of 3 other manufacturers.

  • Determination of the frequency of glove wearer detection of overglove perforation when wearing Brand 1 Indicator® System and comparison to that of 3 other manufacturers.

  • Evaluation of glove wearer perceptions of fit, comfort, tactile sensitivity, and hand fatigue for Brand 1 surgical gloves and compared with those of 3 other manufacturers.

Methodology

Study design

This study, divided into 10 periods, is a cross-over randomized open-label clinical trial (Table 1) in which surgical gloves from 4 manufacturers were randomized in a 2:1 ratio (Brand 1 to each other brand) in each study period to 5 surgical subspecialty study groups: (1) orthopedic surgery, (2) neurosurgery, (3) colorectal surgery, (4) trauma/acute general surgery (AGS), and (5) cardiac and plastic surgeries. The one-time randomization of each subspecialty to a study group occurred prior to the onset of period 1, via a lottery method, where the first subspecialty drawn became group 1 (completed by MD). The glove assignments and rotation for each group were defined a priori as shown in Table 1 (by GB and HA). The study site is an academic, tertiary care center. Each period of the study was defined by a minimum number of gloves collected across all 5 groups, reflecting 320 targeted individual underglove gloving events. Gloves under investigation in this study include both latex and synthetic products. Each participant underwent a glove fitting, choosing preferred gloves from a variety of glove types for each brand. All gloves under study were commercially available and FDA approved for use in the United States. The study was approved by the Western Institutional Review Board. We followed the Consolidated Standards of Reporting Trials (CONSORT) reporting guidelines.

Table 1.

Study randomization and cross-over

*Each period ends when 1 brand has reached 160 individual underglove collections.

Outcome variables

The overall failure of the gloves was assessed at 4 time points: (1) pre-donning failure (defect noted upon removal from packaging), (2) donning failure (failure of the glove while putting it on), (3) observed intraoperative failure (the provider notes a defect in glove integrity during a procedure), and (4) post-procedure, or overall failure, determined by water leak testing (WLT).

Perforation rates were defined as the number of holes/tears/defects per glove as a continuous count variable.

Inclusion and exclusion criteria for participants

The inclusion criteria for study participants were (1) licensed physicians, physicians-in-training, scrub nurses, or technicians working in targeted surgery specialties, (2) active participants within the sterile field, (3) willing to wear a half-size larger underglove compared with overglove when recommended by manufacturer, and (4) willing to use latex gloves. Participants were enrolled by the study team, and they signed informed consent.

The exclusion criteria for study participants were (1) dermatological or other medical conditions that may prevent proper scrub technique, (2) wearing of hand jewelry during surgical procedures, (3) existing conflicts of interest with a glove manufacturer, and (4) latex allergy or objection to using latex gloves.

Case selection

Procedure inclusion criteria were (1) at least 1 participating study clinician is scrubbing into the case and (2) the case expected duration is at least 1 hour as per surgical scheduling data. Cases involving latex-sensitive patients are excluded from the latex arms of the study. No patient information was collected.

Study procedures

Participant gloves were distributed by the study team at the start of each case and collected by the study team in biohazard bags after use in the procedure.

Glove testing

All study gloves used in a surgical procedure by participants were tested using a WLT standard procedure: D5151-19: Standard Test Method for Detection of Holes in Medical Gloves (ASTM International, Conshohocken, PA). 15 The WLT machine was manufactured by DipTech Systems, Inc., Kent OH. Briefly, gloves suspended and filled with 1 liter water were inspected immediately and at 2 minutes for droplets. Any glove demonstrating defects was recorded as a failure, and the total number and site of holes/tears/punctures were recorded.

Laboratory technicians were trained on the machine and demonstrated proficiency.

Provider participant questionnaires

Providers were asked to complete a questionnaire at the end of each period. Gloves were rated by a visual analog scale (VAS) on the following characteristics: tactile sensitivity, grip, comfort, fit, strength of glove, and effect on the skin (irritation). Characteristics were scored by measuring the distance from 0 to the participant’s mark to the nearest millimeter on a 0–100 mm scale with 0 mm being “very bad” and 100 mm being “very good.”

Statistical analysis plan

The failure rate and all dichotomous outcome variables were analyzed with a two-sided Fisher’s exact test between the Brand 1 gloves and other brands. The difference in proportion and estimated odds ratio (OR) with their 95% confidence intervals (CIs) were calculated using the exact Fisher’s method. Mean perforation rates and their standard deviations were estimated between Brand 1 gloves and each of the other gloves and combined.

Generalized linear models were used in the analyses of failure rates, adjusting for other covariates, with binomial distribution and logit link function for the dichotomous outcomes specifically, and Poisson distribution and log link function for the continuous count outcomes, if applicable. Adjusted ORs with 95% CIs were provided from these analyses.

All VAS measurements were regarded as continuous variables. For comparison between Brand 1 gloves and all other gloves combined, nonparametric Wilcoxon rank sum testing was used, and the Kruskal–Wallis rank sum test was used for comparison between each individual brand.

All tests were two-tailed and conducted at a 0.05 significance level unless otherwise specified. All analyses were performed using SAS® v9.4 (SAS Institute, Cary, NC, USA) and R Statistical Software, v4.3.0 (R Foundation for Statistical Computing, Vienna, Austria).

Sample size determination

In order to detect a difference in the failure rate of undergloves between Brand 1 gloves and any one of the other manufacturer gloves with two-sided Fisher’s exact test at significance level 0.05 with a power of 80%, a total of 1,650 gloves were needed assuming a failure rate of 1% in Brand 1 gloves and 3% in the comparators combined. Reference Tanner and Parkinson2 Assuming a dropout rate of 10%, a total of 1,833 undergloves were calculated to be needed. The same power for overgloves implies 1,833 total overgloves required.

Results

Seventy-nine unique surgical team members participated in the study. Surgeons made up 44% (n = 35), surgical technicians 54% (n = 43), and 1 physician assistant participated (1%). The primary service of the participants was orthopedic surgery for 22 (28%), neurosurgery for 14 (18%), colorectal surgery for 19 (24%), AGS for 13 (16%), and cardiothoracic/plastic surgery for 11 (14%). The study ran from May 2018 through November 2021. The study was paused from March to June 2020 due to the coronavirus disease 2019 pandemic.

The total number of gloves collected within each brand and the primary and secondary outcomes are shown in Table 2 (intention to treat, ITT) and 3 (per protocol, PP). Overall, 7,625 gloves were analyzed (Figure 1), providing sufficient statistical power for comparisons between Brand 1 and each of the comparators and combined.

Table 2.

Primary and secondary endpoints, intention to treat

Figure 1.

CONSORT flow diagram.

Undergloves

The primary outcome of the failure rate for undergloves between Brand 1 and all other brands combined was similar in both ITT and PP analyses: ITT: 11.1% versus 10.1%, P = .339 and PP: 11.0% versus 10.1%, P = .398. Comparisons between Brand 1 and each individual brand revealed no significant difference in failure rates, except between Brand 1 and Brand 4: ITT: 11.1% versus 7.7%, P = .014 and PP: 11.0% versus 7.7%, P = .016.

The secondary outcome of perforation counts per underglove is shown as a mean per glove in Tables 2 and 3. The rates of perforation (counts per glove) were no different except for the comparison Brand 1 with Brand 4 in both analyses in which there was a lower perforation count for Brand 4: ITT: Brand 1 rate 0.143 (SD 0.459) versus Brand 4 rate 0.122 (SD 0.535), P = .025 PP: Brand 1 rate 0.142 (SD 0.458) versus Brand 4 rate 0.123 (SD 0.537), P = .032 (Tables 2 and 3).

Table 3.

Primary and secondary endpoints, per protocol

Overgloves

Secondary endpoints in the ITT analysis revealed overglove (OG) failure rates that were lower for Brand 1 compared with all other brands and to each individual brand except for Brand 4. The OG failure rate was lower for Brand 1 compared with all other brands combined: 17.5% versus 20.7%, P = .012. Brand 1 compared with each individual brand as follows: Brand 2 failure rate was 20.2%, P = .115; Brand 3 was 23.7%, P < .001; and Brand 4 was 18.0%, P = .819 (Table 2). Similar results for the per protocol analysis were observed: Brand 1 OG failure rate was 17.8% versus all other brands 20.5%, P = .032. This overall difference was driven by the higher failure rate of Brand 3 at 23.6% (P = .001); Brands 2 and 4 were similar to Brand 1 in per protocol analysis (Table 3).

The secondary outcome of perforation counts per overglove is shown as a mean per glove in Tables 2 and 3. The only difference in brand-wise comparisons was that Brand 3 had a slightly increased perforation rate (count per glove) compared with Brand 1: ITT: 0.374 (SD 0.839) versus 0.267 (SD 0.709), P = .017, PP: 0.374 (SD 0.840) versus 0.269 (SD 0.710), P = .021, Tables 2 and 3.

Intraoperative failures

Only a subset of perforations were detected by the glove wearer intraoperatively (Tables 2 and 3). Brand 1 intraoperative failures were more often detected than non-Brand 1 failures for undergloves (ITT: P = .044; PP: P = .036) and overgloves (ITT: P = .003; PP: P = .001). Each brand experienced a higher rate of intraoperative failures, or detection of breaches by the wearer, for overgloves compared with undergloves (Tables 2 and 3).

Donning and doffing failures

Few donning or doffing failures occurred during the study (Tables 2 and 3). There was no difference in comparing these failure rates between individual brands except in the cases where 1 of the brands in pair-wise comparison had no failures observed during the course of the study. Brand 1 versus non-Brand 1 comparisons were significantly different statistically but driven by differences of Brand 1 versus Brand 2 gloves.

Adjusted analysis

The overall rate of perforation was not different between Brand 1 and Brands 2,3,4 combined when controlling for surgical subspecialty group, case duration, side (R or L), and type of glove (underglove or overglove); the OR for combined brands was 1.061 (95% CI, 0.931–1.211) in reference to Brand 1 (Table 4).

Table 4.

Adjusted analysis

Several variables affected the perforation rate. Gloves worn on the right hand were less likely to perforate (aOR = 0.78; 95% CI, 0.690–0.891) compared with the ones on the left hand, and undergloves were less likely to perforate than overgloves (aOR = 0.490; 95% CI, 0.428–0.560). In comparison to cardiothoracic/plastic surgery types as a reference, orthopedic and trauma/acute general surgeries experience a significantly higher perforation rate (aOR = 2.163; 95% CI, 1.811–2.592 and aOR = 1.344; 95% CI, 1.079–1.674, respectively), while colorectal and neurosurgery groups had similar perforation rates to the reference group. Increasing the duration of the procedure in minutes was associated with a small increase in both overall perforation rates (aOR = 1.002; 95% CI, 1.001–1.002) and intraoperative failures (aOR = 1.003; 95% CI, 1.002–1.003).

Observed intraoperative failures were less likely to be detected between combined Brands 2,3,4 versus Brand 1 (aOR = 0.733; 95% CI, 0.585–0.921) (Table 5). Similar to the overall perforation rate, undergloves were less likely to have observed failures compared with overgloves (aOR = 0.764; 95% CI, 0.606–0.960). There was no difference in observed intraoperative failures related to the hand side or between surgical groups with the exception of colorectal surgery for which providers were less likely to detect intraoperative failures (aOR = 0.350; 95% CI, 0.216–0.548) versus cardiothoracic/plastic surgery.

Table 5.

Adjusted analysis

Participant questionnaires

Providers completed a total of 159 questionnaires over the 10 periods of the study: 45 (28%) from cardiothoracic/plastic surgery, 44 (28%) from orthopedic surgery, 24 (15%) from colorectal surgery, 27 (17%) from neurosurgery, and 19 (12%) from acute general/trauma surgery. The majority of questionnaires were completed by surgeons (n = 99, 63%), followed by OR scrub technicians (n = 51, 32%), and nurse procedure assistants (n = 8, 5%).

Mean satisfaction scores for each glove feature by brand are shown in Table 6. The differences in mean score between individual brands were not significant for most features: fit P = .137, comfort P = .195, grip P = .232, tactile sensitivity P = .330, and skin irritation P = .355. For the feature strength, participants reported higher satisfaction rankings for Brand 1 (P = .004). In comparisons of Brand 1 versus all other brands combined, multiple features were more highly ranked for Brand 1 including fit, comfort, grip, and strength (Table 6, far right column).

Table 6.

Provider satisfaction scores * for key glove features by brand

* Where 0 = very bad, 100 = very good.

Discussion

Surgical gloves are the critical barrier between the surgical team and the patient within the sterile field. Our study is the first of its kind in that we systematically compared the durability and acceptability of surgical glove types in a randomized clinical trial conducted in a real-world environment. Clinical trials conducted in real-world settings are logistically challenging because of competing clinical priorities. Reference McCulloch, Taylor, Sasako, Lovett and Griffin16,Reference Kao, Aaron and Dellinger17 Study team members fit and re-fit participants with gloves to ensure acceptability to providers for the specific clinical tasks required in each case. The randomization and 10-period rotation allowed for scheduled, repeated exposures of each study group to each of the study gloves. In this design, each of the study participants and/or surgical groups served as their own controls.

Glove perforation rates reported in the literature are highly variable Reference Tanner and Parkinson2–Reference Partecke, Goerdt and Langner8,Reference Misteli, Weber, Reck, Rosenthal, Zwahlen, Fueglistaler, Bolli, Oertli, Widmer and Marti18,Reference Zhang, Gao, Ruan and Zheng19 consistent with the diversity of surgical cases, glove types, specialty instruments or devices, Reference Zhang, Gao, Ruan and Zheng19 provider types, Reference Thomson, Krysa, McGuire and Mann21 and resource settings Reference Bekele, Makonnen, Tesfaye and Taye3 reflected in the published literature. Our overall failure rates ranged from 7.7% to 11.1% for undergloves and 17.5%–23.7% for overgloves, which is squarely in the middle of reported ranges of 7%–60%. Reference Tanner and Parkinson2–Reference Partecke, Goerdt and Langner8,Reference Misteli, Weber, Reck, Rosenthal, Zwahlen, Fueglistaler, Bolli, Oertli, Widmer and Marti18–Reference Thomson, Krysa, McGuire and Mann21

Surgical team members only detect a minority of perforations in gloves during operative procedures. Reference Harnoss, Partecke, Heidecke, Hübner, Kramer and Assadian13,Reference Meakin, Gilman, Parsons, Burton and Langley-Hobbs14,Reference Thomson, Krysa, McGuire and Mann21 While the risk to provider and patient due to these breaches in maximum sterile technique has yet to be quantified in terms of clinical outcomes, there is evidence that bacteria from the provider’s hands can enter the sterile field via perforated gloves. Reference Harnoss, Partecke, Heidecke, Hübner, Kramer and Assadian13 The ability of providers to identify gloves whose barrier function has been compromised is important in the maintenance of the sterile field, particularly during technically difficult, prolonged, or high-risk (for SSI) cases. In our study, participants wearing Brand 1 gloves were more likely to be able to detect perforations intraoperatively and proactively change gloves during the procedure. The ability of surgical team members to detect intraoperative failures should be considered when evaluating gloves for a facility.

Surgical case factors that may elevate risks include long durations, Reference Thomson, Krysa, McGuire and Mann21 specific procedures, or instruments that are associated with higher perforation rates. Reference Goldman, Haug, Owen, Wayne and Golladay20 In the adjusted analysis that accounted for the duration, surgical service type, and provider type, the differences in failure rates between brands were the same. Despite known associations between surgery type and length on perforation rates, there are no standard recommendations for the frequency of glove changes that should occur in most operative procedures. Given the frequency of undetected glove perforations, scheduled glove changes could limit the amount of time a provider is using a compromised glove.

Limitations of this study include that it was conducted at a single site, and providers were allowed to opt out of participation if the surgical case required a specific, non-study glove type. In addition, providers chose from a range of glove options within each brand to ensure an appropriate glove type for the procedure was available for each clinical case. There were similar glove types available for each brand in an attempt to maintain consistent glove type choices across the 4 brands, but certainly, the choices necessary to perform this real-world study in a clinical environment could have introduced bias. Study questionnaires were limited potentially by a failure of participants to recall specific features of study gloves as they were used in a subset of the providers’ cases for any given period.

In this study, we tested over 7,000 gloves using trained technicians and validated WLT methodologies, over a 2-year period, involving multiple surgical services and hundreds of surgical procedures. The data collected allows for a comprehensive and updated view of the risks of glove failures in modern surgery. In the era of double-gloving as a standard for surgical team members, our high perforation rates raise the question: Is double-gloving enough? Protocols already exist in which additional glove changes are performed, in efforts to prevent contamination of the wound and prevent SSIs. Reference Albert, Bataller, Masroor, Doll, Cooper, Spencer, Winborne, Zierden, Stevens, Scott and Bearman22 Preservation of glove integrity at the surgeon/patient interface is imperative to maintain maximum sterility and should be prioritized in both glove design and gloving procedures in the operating room.

Data availability statement

The data can be shared for research purposes upon request by contacting the Principal Investigator Michelle Doll, , but may require additional permissions from the institutional review board and the original data holders.

Acknowledgments

Manuscript preparation: Molnlycke Health Care provided assistance with the study design.

Author contribution

Conceptualization: G.B., H.A., J.S., M.J.F., A.C., J.B., M.B.A., B.C.; methodology: G.B., H.A., L.K., M.D.; data collection and curation: M.D., A.N., J.K., C.A., M.H., O.H.; formal analysis and interpretation of results, L.K., M.D., G.B.; writing—original draft preparation: M.D., L.K.; writing—review and editing: M.D., G.B., L.K.; project administration: M.D., A.N., J.S., M.J.F., A.C., J.B., M.B.A, B.C. All authors reviewed and approved the final version of the manuscript.

Financial support

Funding was provided by Molnlycke Health Care.

Competing interests

None.

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Figure 0

Table 1.Study randomization and cross-over

Figure 1

Table 2.Primary and secondary endpoints, intention to treat

Figure 2

Figure 1.CONSORT flow diagram.

Figure 3

Table 3.Primary and secondary endpoints, per protocol

Figure 4

Table 4.Adjusted analysis

Figure 5

Table 5.Adjusted analysis

Figure 6

Table 6.Provider satisfaction scores* for key glove features by brand