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SURGICAL S I T E INF ECTION


and see precisely how different light heads affected air flow,” commented Nieminen. “Our research showed that a sleek, streamlined construction designed to optimise laminar air flow could dramatically reduce the danger of contamination at the operation site. The standard turbulence intensity should be below 37.5%, but for the Q-Flow this was shown to be 15.9% (according to the DIN 1946- 4:2008 standard), thus helping to reduce the microbial load around the patient. This improves laminar air flow so sterile conditions are maintained and the risk of infection is reduced.” Ultimately, the investigation of air flow


as part of operating theatre light research and development has added to the current understanding of how ventilation in theatres can be influenced and has highlighted a possible solution to this challenging issue. CSJ


References 1 WHO HCAIs Factsheet. Accessed at: https://www. who.int/gpsc/country_work/gpsc_ccisc_fact_ sheet_en.pdf?ua=1


2 NICE, Surgical site infection Quality standard [QS49] Published date: 31 October 2013. Accessed at: https://www.nice.org.uk/guidance/qs49/ chapter/introduction


3 Anderson DJ, et al, Strategies to Prevent Surgical Site Infections in Acute Care Hospitals: 2014 Update, Infect Control Hosp Epidemiol. 2014 Jun; 35(6): 605–627. doi: 10.1086/676022. Accesed at: https://www.ncbi.nlm.nih.gov/pmc/articles/ PMC4267723/


4 Spagnolo AM, et al, Operating theatre quality and prevention of surgical site infections, J Prev Med Hyg. 2013 Sep; 54(3): 131–137. Accessed at: https://www.ncbi.nlm.nih.gov/pmc/articles/ PMC4718372/


5 Kai T, Ayagaki N and Setoguchi H, Influence of the Arrangement of Surgical Light Axes on the Air Environment in Operating Rooms, Journal of


Healthcare Engineering, Volume 2019 |Article ID 4861273. Accessed at: https://www.hindawi. com/journals/jhe/2019/4861273/


6 Pasquarella, C., Agodi, A., Auxilia, F. et al. Air quality in the operating theatre: a perspective. Aerobiologia 36, 113–117 (2020). https://doi.org/10.1007/s10453-019-09584- 0. Accessed at: https://link.springer.com/ article/10.1007/s10453-019-09584-0


7 Ibid. 8 Cristina ML, et al, Operating room environment and surgical site infections in arthroplasty procedures, J Prev Med Hyg. 2016 Sep; 57(3): E142–E148. Accessed at: https://www.ncbi.nlm.nih.gov/pmc/ articles/PMC5139609/#R02


9 James M et al, Current Evidence for the Use of Laminar Flow in Reducing Infection Rates in Total Joint Arthroplasty, Open Orthop J. 2015;


9: 495–498. Published online 2015 Sep 30. doi: 10.2174/1874325001509010495. Accessed at: https://www.ncbi.nlm.nih.gov/pmc/articles/ PMC4645891/#:~:text=Laminar%20 flow%20theatres%20aim%20to,flow%20 of%20bacteria%20free%20air.&text=In%20 horizontal%20Laminar%20flow%20 systems,of%20the%20operating%20theatre%20 walls.


10 Aganovica A et al, Impact of surgical lights on the velocity distribution and airborne contamination level in an operating room with laminar airflow system, Building and Environment, Volume 126, December 2017, Pages 42-53. Accessed at: https://www.sciencedirect.com/science/article/ abs/pii/S0360132317304389#:~:text=The%20 presence%20of%20surgical%20lights,wake%20 downstream%20of%20the%20lights.


11 Reface R et al, The effect of operating lights on laminar flow an experimental study using neutrally buoyant helium bubbles, The Bone & Joint Journal, Vol. 99-B, No. 8 Arthroplasty, https://online. boneandjoint.org.uk/doi/abs/10.1302/0301- 620X.99B8.BJJ-2016-0581.R2


About Bender


Bender UK is the sole authorised distributor and maintainer of Merivaara surgical lights, operating tables, clinical trolleys, digital imaging and pendants in the UK and Republic of Ireland as part of their full turnkey healthcare offering. Merviaara’s Q-Flow surgical light has won two awards for its design: the Red Dot Award for Product Design in 2017 and the Fennia Prize Grand Prix 2017.


Conventional design Optimised air flow design – Q-Flow 68 l WWW.CLINICALSERVICESJOURNAL.COM JANUARY 2021


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