The hazards of endoscopy: Ergonomics guide the way
BY ANNA LIPOWSKA, MD, AND AMANDEEP SHERGILL, MD, MS
Preventing disability and promoting a long and successful endoscopic career involves proactive measures to support well-being, and ergonomics plays a key role. Ergonomics is the science of fitting a job to the worker, with a primary goal of working smarter and safer. When hazards are identified, mitigation measures, guided by a hierarchy of controls, must be implemented that improve the fit of the tool, task and job to the worker in order to reduce the risk of endoscopy-related injury (ERI). As more women enter the field and as the overall GI physician population ages, ensuring that endoscopy is designed to be safely performed within the capacity of a diverse group of workers will be critical to creating an inclusive and equitable work environment.
Chicago Medicine
Dr. Anna Lipowska
Ergonomic education is foundational: Awareness of ERI risk factors allows endoscopists to identify hazards and advocate for effective control solutions. Ergonomic education materials are available through all of the major GI societies. A road map for implementing an endoscopy ergonomics program has been previously published and provides guidance on risk assessment and mitigation measures.
Respect pain
Overuse injuries occur when the physical demands of a job are greater than tissue tolerances, leading to cumulative microtrauma. The first sign of microtraumatic injury is discomfort and pain. Studies have demonstrated that an estimated three-quarters of gastroenterologists experience ERI, with 20% requiring time off work and 12% requiring surgery. Gastroenterology trainees are also at risk, with 20% of surveyed fellows endorsing overuse injury, some even requiring work-related leaves of absence. In the early stages of ERI, aching and tiredness occur during the work shift only. In the intermediate stage, aching and tiredness occur early in the work shift and persist at night, and may be associated with a reduced capacity for repetitive work. In the late stages, aching, fatigue and weakness persist at rest and may be associated with inability to sleep and to perform light duties. Pain is an important signal indicating mitigation measures are required to control exposures.
Utilize the hierarchy of controls
The responsibility for adoption of ergonomically friendly practices does not lie solely with the physician; both institutional and industry-level support are key to its success. The hierarchy of controls defines which actions will best mitigate exposures to hazards in the workplace, highlighting that modifications to personal practice have the smallest impact. Current endoscope design does not accommodate the full range of hand strengths and sizes and contributes to ERI.
University of Illinois at Chicago
Dr. Amandeep Shergill
Advancements at the industry level by eliminating or substituting hazards, or designing engineering controls to reduce exposure, will be most effective at preventing distal upper extremity ERI. The next most effective controls are at the institutional level, with endoscopy units ensuring access to engineering controls and implementing effective administrative controls. For example, institutional support and investment in adjustable workstations is imperative to accommodate a range of anthropometric dimensions of the population. Support for ergonomic education, scheduling changes and a culture where safety is a priority can help reduce exposure to hazards and injury risk.
Adjust the endoscopy suite to achieve a comfortable position before every procedure
Neutral body posture is our position of greatest comfort and maximum strength, and any deviation from neutral posture decreases the amount of force the muscles can produce and causes the muscles to fatigue sooner. The most important factor affecting the endoscopists’ overall posture is the monitor position and height. Monitors must be adjustable. Place the monitor directly in front of you, with the center of the screen 15-25 degrees below eye height for a neutral neck position and resting eye position. Procedure bed height should be adjusted 0-10 cm below elbow height to allow for neutral elbow postures and relaxed shoulders. Antifatigue mats and shoes with supportive insoles can reduce fatigue. Two-piece lead aprons distribute a portion of the static load to the hips and decrease back strain. Incorporate a preprocedure ergonomic time-out, to assess proper room set up, body mechanics, equipment and team preparedness.
Give yourself a break
Breaks should be built into the endoscopy schedule, especially for a full day of endoscopy. At a minimum, incorporate microbreaks during procedures, which have been found to alleviate pain and improve performance. Exercises and stretching can be incorporated between cases, including routines designed specifically for endoscopists.
Getting older isn’t for the weak
Currently, 50% of our gastroenterologists are over 55 years old. The aging process leads to a distinct muscle mass and strength loss. Women are already at a disadvantage because, on average, they have less muscle mass than men in all age groups. Muscle starts to deteriorate when we reach our 30s, and after age 40, we lose on average 8% of our muscle mass every decade which accelerates at an even faster rate after age 60. Both resistance and aerobic exercise can be very useful to counteract sarcopenia and maintain strength. Given the physical demands of endoscopy, exercise can help safeguard career longevity and maintain overall wellness. Multiple resources are available to tailor a program that fits your time, budget and needs.
Optimize all of your workstations
Prolonged computer use and desk work is also a significant part of a gastroenterologist’s profession. If using a sitting desk, chair height should allow for 90-degree flexion at the hips and knees and for feet to rest flatly on the floor. The chair should also provide adequate back support for a relaxed upright position. Similar to endoscopy, place the monitor directly in front with the center of the screen slightly below eye level. For mouse and keyboard placement, aim to have the elbows at or slightly below 90 degrees and one’s wrists and fingers in neutral position.
Endoscopy can be hazardous to the endoscopists’ health. Incorporating ergonomic principles creates a safer and more efficient work environment. At the individual level, ergonomically optimized postures during endoscopy as well as during computer-related tasks, room set up, inclusion of microbreaks, and protective exercises can help decrease the risk of repetitive strain injury and prevent disability. Importantly, change at the industry and institutional level has the greatest potential for positive impact. Adoption of ergonomic practices promotes career longevity and ensures that gastroenterologists can continue successful and long careers and provide quality care to their patients without compromising their own health.
Dr. Lipowska is an assistant professor in the division of gastroenterology and hepatology, University of Illinois at Chicago. She disclosed no conflicts. Dr. Shergill is chief of gastroenterology for the San Francisco VA Health Care System. She disclosed consulting work for Boston Scientific and Neptune Medical, honoraria for visiting professorship with Intuitive Surgical, and a research gift from Pentax.
References
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Pawa S et al. Are all endoscopy-related musculoskeletal injuries created equal? Results of a national gender-based survey. Am J Gastroenterol. 2021;116(3):530-8.
Austin K et al. Musculoskeletal injuries are commonly reported among gastroenterology trainees: Results of a national survey. Dig Dis Sci. 2019;64(6):1439-47.
Lipowska A et al. Ergonomics in the unit: Modeling the environment around the endoscopist. Tech Innov Gastrointest Endosc. 2021;23(3):256-62.
Park A et al. Intraoperative “Micro Breaks” with a targeted stretching enhance surgeon physical function and mental focus: A multicenter cohort study. Ann Surg. 2017;265(2):340-6.
Shergill A et al. Ergonomic endoscopy: An oxymoron or realistic goal? Gastrointest Endosc. 2019;90(6):966-70.
