{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,19]],"date-time":"2026-02-19T01:04:14Z","timestamp":1771463054534,"version":"3.50.1"},"reference-count":49,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2021,3,31]],"date-time":"2021-03-31T00:00:00Z","timestamp":1617148800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["TropicalMed"],"abstract":"<jats:p>Purpose: The aim of the present study was to determine whether the risk of complications increases with the number of people in the operating room (OR). Several studies have stated that an increased number of people in the OR increases not only the risk of infection but also the risk of intraoperative complications due to distractions during the surgery. Materials and Methods: This retrospective study included all patients who had surgery between January 2017 and January 2018 in an OR with the usual surgical team and three or more observers. Patient demographic data, surgical details (duration of the surgery, the surgery being open or arthroscopic, and whether a graft was used), and intraoperative and postoperative complications were recorded. Results: A total of 165 surgeries were recorded, with a mean operating time of 70 min (40% open surgeries, 37% arthroscopic surgeries, and 23% combined open and arthroscopic procedures). The main intraoperative complications were vessel damage, nerve damage, premature cement setting, and leg-length discrepancy, with 1 case each. The main postoperative complications were rigidity (8 cases), unexplained pain (11 cases), failed meniscal suturing (3 cases), a postoperative stress fracture (1 case), correction loss in osteotomy (1 case), and wound problems not related to infection (1 case). There were no cases of infection. Discussion: The present study shows that the complication rate when having observers in the OR is comparable to the reported data. The key to avoiding complications is for everyone to comply with basic OR behavior.<\/jats:p>","DOI":"10.3390\/tropicalmed6020043","type":"journal-article","created":{"date-parts":[[2021,3,31]],"date-time":"2021-03-31T10:24:33Z","timestamp":1617186273000},"page":"43","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["Fellows and Observers Are Not a Problem for Infection in the Operating Rooms of Teaching Centers"],"prefix":"10.3390","volume":"6","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2140-427X","authenticated-orcid":false,"given":"Ver\u00f3nica","family":"Montiel","sequence":"first","affiliation":[{"name":"Orthopedic Surgery and Traumatology Department, Cl\u00ednica Universidad de Navarra, Av. Pio XII, 36, 31008 Pamplona, Navarra, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Daniel","family":"P\u00e9rez-Prieto","sequence":"additional","affiliation":[{"name":"Orthopedic Surgery and Traumatology Department, Hospital del Mar, Passeig Mar\u00edtim de la Barceloneta, 25, 29, 08003 Barcelona, Catalu\u00f1a, Spain"},{"name":"Hospital Universitari Dexeus- Grupo Quir\u00f3nsalud, Carrer de Sabino Arana, 5, 19, 08028 Barcelona, Catalu\u00f1a, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Simone","family":"Perelli","sequence":"additional","affiliation":[{"name":"Orthopedic Surgery and Traumatology Department, Hospital del Mar, Passeig Mar\u00edtim de la Barceloneta, 25, 29, 08003 Barcelona, Catalu\u00f1a, Spain"},{"name":"Hospital Universitari Dexeus- Grupo Quir\u00f3nsalud, Carrer de Sabino Arana, 5, 19, 08028 Barcelona, Catalu\u00f1a, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Joan Carles","family":"Monllau","sequence":"additional","affiliation":[{"name":"Orthopedic Surgery and Traumatology Department, Hospital del Mar, Passeig Mar\u00edtim de la Barceloneta, 25, 29, 08003 Barcelona, Catalu\u00f1a, Spain"},{"name":"Hospital Universitari Dexeus- Grupo Quir\u00f3nsalud, Carrer de Sabino Arana, 5, 19, 08028 Barcelona, Catalu\u00f1a, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2021,3,31]]},"reference":[{"key":"ref_1","unstructured":"World alliance for patient safety (2020, February 04). WHO Guidelines for Safe Surgery. Safe Surgery Saves Lives. Available online: http:\/\/www.who.int\/patientsafety\/safesurgery\/tools_resources\/9789241598552\/en\/."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"332","DOI":"10.1016\/0002-9610(71)90253-4","article-title":"What\u2019s wrong with our operating rooms?","volume":"122","author":"Laufman","year":"1971","journal-title":"Am. J. Surg."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"137","DOI":"10.1177\/1937586717705107","article-title":"Safety; Performance, and Satisfaction Outcomes in the Operating Room: A Literature Review","volume":"11","author":"Joseph","year":"2018","journal-title":"HERD"},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"1139","DOI":"10.1161\/CIR.0b013e3182a38efa","article-title":"Patient safety in the cardiac operating room: Human factors and teamwork: A scientific statement from the American Heart Association","volume":"128","author":"Wahr","year":"2013","journal-title":"Circulation"},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"45","DOI":"10.1177\/1062860608326419","article-title":"Measurement of foot traffic in the operating room: Implications for infection control","volume":"24","author":"Lynch","year":"2009","journal-title":"Am. J. Med. Qual."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"21","DOI":"10.1016\/j.jss.2013.12.002","article-title":"Identification and interference of intraoperative distractions and interruptions in operating rooms","volume":"188","author":"Antoniadis","year":"2014","journal-title":"J. Surg. Res."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"567","DOI":"10.1080\/00140130600568865","article-title":"Identification of systems failures in successful paediatric cardiac surgery","volume":"49","author":"Catchpole","year":"2006","journal-title":"Ergonomics"},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"276","DOI":"10.1136\/bmjqs-2018-007957","article-title":"OR study group Minor flow disruptions, traffic-related factors and their effect on major flow disruptions in the operating room","volume":"28","author":"Joseph","year":"2019","journal-title":"BMJ Qual. Saf."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"380","DOI":"10.1016\/j.jopan.2010.10.001","article-title":"Noise in the Operating Room\u2014What Do We Know? A Review of the Literature","volume":"25","author":"Hasfeldt","year":"2010","journal-title":"J. PeriAnesth. Nurs."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"1541","DOI":"10.1080\/00140139.2016.1159736","article-title":"An observational study","volume":"59","author":"Keller","year":"2016","journal-title":"Ergonomics"},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"512","DOI":"10.1213\/ANE.0000000000001067","article-title":"Intraoperative Noise Increases Perceived Task Load and Fatigue in Anesthesiology Residents: A Simulation-Based Study","volume":"122","author":"McNeer","year":"2016","journal-title":"Anesth. Analg."},{"key":"ref_12","first-page":"43","article-title":"Music in the operating room: Is it a safety hazard?","volume":"83","author":"Shambo","year":"2015","journal-title":"AANA J."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"107","DOI":"10.1016\/j.surg.2009.08.010","article-title":"The impact of environmental noise on robot-assisted laparoscopic surgical performance","volume":"147","author":"Siu","year":"2010","journal-title":"Surgery"},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"376","DOI":"10.1097\/ALN.0b013e31827d417b","article-title":"Effects of divided attention and operating room noise on perception of pulse oximeter pitch changes: A laboratory study","volume":"118","author":"Stevenson","year":"2013","journal-title":"Anesthesiology"},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"933","DOI":"10.1016\/j.jamcollsurg.2012.12.048","article-title":"Effect of Noise on Auditory Processing in the Operating Room","volume":"216","author":"Way","year":"2013","journal-title":"J. Am. Coll Surg."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"1079","DOI":"10.1097\/SLA.0000000000001051","article-title":"The Impact of Operating Room Distractions on Stress, Workload, and Teamwork","volume":"261","author":"Wheelock","year":"2015","journal-title":"Ann. Surg."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"1025","DOI":"10.1097\/SLA.0000000000000253","article-title":"A Noise-Reduction Program in a Pediatric Operation Theatre Is Associated With Surgeon\u2019s Benefits and a Reduced Rate of Complications","volume":"259","author":"Engelmann","year":"2014","journal-title":"Ann. Surg."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"1021","DOI":"10.1002\/bjs.7496","article-title":"Adverse effect of noise in the operating theatre on surgical-site infection","volume":"98","author":"Kurmann","year":"2011","journal-title":"Br. J. Surg."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"97","DOI":"10.1016\/S0196-6553(99)70088-X","article-title":"Guideline for Prevention of Surgical Site Infection, 1999","volume":"27","author":"Mangram","year":"1999","journal-title":"Am. J. Infect. Control."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"742","DOI":"10.2106\/JBJS.17.01005","article-title":"Trampuz A Alpha Defensin Lateral Flow Test for Diagnosis of Periprosthetic Joint Infection: Not a Screening but a Confirmatory Test","volume":"100","author":"Renz","year":"2018","journal-title":"J. Bone Joint Surg. Am."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"214","DOI":"10.1177\/230949901402200220","article-title":"Informed consent documentation for total hip and knee replacement using generic forms with blank spaces","volume":"22","author":"Mussa","year":"2014","journal-title":"J. Orthop. Surg."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"1118","DOI":"10.1177\/0363546514525929","article-title":"Adverse event rates and classifications in medial opening wedge high tibial osteotomy","volume":"42","author":"Martin","year":"2014","journal-title":"Am. J. Sports Med."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"639","DOI":"10.1016\/j.arthro.2008.12.020","article-title":"Complications after medial opening wedge high tibial osteotomy","volume":"25","author":"Miller","year":"2009","journal-title":"Arthroscopy"},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"649","DOI":"10.1007\/s00402-003-0588-7","article-title":"Complications in high tibial (medial opening wedge) osteotomy","volume":"124","author":"Spahn","year":"2004","journal-title":"Arch. Orthop. Trauma. Surg."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"2222","DOI":"10.1177\/0363546515591260","article-title":"Meniscus suture repair: Minimum 10-year outcomes in patients younger than 40 years compared with patients 40 and older","volume":"43","author":"Steadman","year":"2015","journal-title":"Am. J. Sports Med."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"300","DOI":"10.1016\/S0003-4975(00)02592-3","article-title":"The human factor in cardiac surgery: Errors and near misses in a high technology medical domain","volume":"72","author":"Carthey","year":"2001","journal-title":"Ann. Thorac. Surg."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"678","DOI":"10.1016\/j.amjsurg.2008.03.002","article-title":"Surgical team behaviors and patient outcomes","volume":"197","author":"Mazzocco","year":"2009","journal-title":"Am. J. Surg."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"1141","DOI":"10.1001\/jamasurg.2013.596","article-title":"Integrating human factors research and surgery: A review","volume":"147","author":"Shouhed","year":"2012","journal-title":"Arch. Surg."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"658","DOI":"10.1016\/j.surg.2007.07.034","article-title":"Disruptions in surgical flow and their relationship to surgical errors: An exploratory investigation","volume":"142","author":"Wiegmann","year":"2007","journal-title":"Surgery"},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"102","DOI":"10.1016\/j.surg.2007.01.033","article-title":"Improving patient safety by identifying latent failures in successful operations","volume":"142","author":"Catchpole","year":"2007","journal-title":"Surgery"},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"661","DOI":"10.1016\/S0022-5223(00)70006-7","article-title":"Human factors and cardiac surgery: A multicenter study","volume":"119","author":"Carthey","year":"2000","journal-title":"J. Thorac. Cardiovasc. Surg."},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"5189","DOI":"10.1002\/sim.2886","article-title":"Dynamic modelling in a study of surgical error management","volume":"26","author":"Carthey","year":"2007","journal-title":"Stat. Med."},{"key":"ref_33","doi-asserted-by":"crossref","unstructured":"Ritter, M.A., Eitzen, H., French, M.L., and Hart, J.B. (1975). The operating room environment as affected by people and the surgical face mask. Clin. Orthop. Relat. Res., 147\u2013150.","DOI":"10.1097\/00003086-197509000-00020"},{"key":"ref_34","unstructured":"(2012). Association of perioperative Registered Nurses Recommended practices for traffic patterns in the peroperative practice setting. AORN J., 71, 95\u201398."},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"750","DOI":"10.1016\/j.ajic.2011.09.015","article-title":"Traffic flow in the operating room: An explorative and descriptive study on air quality during orthopedic trauma implant surgery","volume":"40","author":"Andersson","year":"2012","journal-title":"Am. J. Infect. Control."},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"e004274","DOI":"10.1136\/bmjopen-2013-004274","article-title":"Attitudes, risk of infection and behaviours in the operating room (the ARIBO Project): A prospective, cross-sectional study","volume":"4","author":"Birgand","year":"2014","journal-title":"BMJ Open."},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"275","DOI":"10.1186\/s13063-019-3370-z","article-title":"Improvement in staff behavior during surgical procedures to prevent post-operative complications (ARIBO): Study protocol for a cluster randomised trial","volume":"20","author":"Birgand","year":"2019","journal-title":"Trials"},{"key":"ref_38","doi-asserted-by":"crossref","first-page":"93","DOI":"10.1017\/ice.2014.9","article-title":"Influence of staff behavior on infectious risk in operating rooms: What is the evidence?","volume":"36","author":"Birgand","year":"2015","journal-title":"Infect. Control. Hosp. Epidemiol."},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"589","DOI":"10.1080\/00140130600568899","article-title":"Measuring intra-operative interference from distraction and interruption observed in the operating theatre","volume":"49","author":"Healey","year":"2006","journal-title":"Ergonomics"},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"135","DOI":"10.1136\/qshc.2006.019711","article-title":"Quantifying distraction and interruption in urological surgery","volume":"16","author":"Healey","year":"2007","journal-title":"Qual. Saf. Health Care"},{"key":"ref_41","doi-asserted-by":"crossref","first-page":"526","DOI":"10.1510\/icvts.2009.227116","article-title":"Cardiac surgical theatre traffic: Time for traffic calming measures?","volume":"10","author":"Young","year":"2010","journal-title":"Interact. Cardiovasc. Thorac. Surg."},{"key":"ref_42","doi-asserted-by":"crossref","first-page":"146","DOI":"10.1089\/sur.2018.248","article-title":"Operating Room Foot Traffic: A Risk Factor for Surgical Site Infections","volume":"20","author":"Alizo","year":"2019","journal-title":"Surg. Infect."},{"key":"ref_43","doi-asserted-by":"crossref","first-page":"835","DOI":"10.1086\/506396","article-title":"Piemonte Nosocomial Infection Study Group Surgical site infection surveillance: Analysis of adherence to recommendations for routine infection control practices","volume":"27","author":"Castella","year":"2006","journal-title":"Infect. Control. Hosp. Epidemiol."},{"key":"ref_44","doi-asserted-by":"crossref","first-page":"68","DOI":"10.1016\/0195-6701(88)90169-7","article-title":"Aerobiology in the operating room\u2014a review","volume":"11","author":"Hambraeus","year":"1988","journal-title":"J. Hosp. Infect."},{"key":"ref_45","doi-asserted-by":"crossref","first-page":"10","DOI":"10.1136\/bmj.285.6334.10","article-title":"Effect of ultraclean air in operating rooms on deep sepsis in the joint after total hip or knee replacement: A randomised study","volume":"285","author":"Lidwell","year":"1982","journal-title":"Br. Med. J."},{"key":"ref_46","doi-asserted-by":"crossref","first-page":"2690","DOI":"10.1007\/s11999-012-2252-4","article-title":"Operating room traffic is a major concern during total joint arthroplasty","volume":"470","author":"Panahi","year":"2012","journal-title":"Clin. Orthop. Relat. Res."},{"key":"ref_47","doi-asserted-by":"crossref","first-page":"3","DOI":"10.1136\/bmjqs-2011-000169","article-title":"Factors that influence the expected length of operation: Results of a prospective study","volume":"21","author":"Gillespie","year":"2012","journal-title":"BMJ Qual. Saf."},{"key":"ref_48","doi-asserted-by":"crossref","first-page":"2171","DOI":"10.1007\/s00464-008-0017-7","article-title":"A quantitative study of disruption in the operating room during laparoscopic antireflux surgery","volume":"22","author":"Zheng","year":"2008","journal-title":"Surg. Endosc."},{"key":"ref_49","doi-asserted-by":"crossref","first-page":"916","DOI":"10.1007\/BF00188483","article-title":"A comparison of operating room crowding between open and laparoscopic operations","volume":"10","author":"Alarcon","year":"1996","journal-title":"Surg. Endosc."}],"container-title":["Tropical Medicine and Infectious Disease"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2414-6366\/6\/2\/43\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,13]],"date-time":"2025-10-13T13:55:49Z","timestamp":1760363749000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2414-6366\/6\/2\/43"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,3,31]]},"references-count":49,"journal-issue":{"issue":"2","published-online":{"date-parts":[[2021,6]]}},"alternative-id":["tropicalmed6020043"],"URL":"https:\/\/doi.org\/10.3390\/tropicalmed6020043","relation":{},"ISSN":["2414-6366"],"issn-type":[{"value":"2414-6366","type":"electronic"}],"subject":[],"published":{"date-parts":[[2021,3,31]]}}}