Mechanical Behavior of Osteoporotic Bone at Sub-Lamellar Length Scales

Osteoporosis is a disease known to promote bone fragility but the effect on the mechanical properties of bone material, which is independent of geometric effects, is particularly unclear. To address this problem, micro-beams of osteoporotic bone were prepared using focused ion beam microscopy and mechanically tested in compression using an atomic force microscope while observing them using in situ electron microscopy. This experimental approach was shown to be effective for measuring the subtle changes in the mechanical properties of bone material required to evaluate the effects of osteoporosis. Osteoporotic bone material was found to have lower elastic modulus and increased strain to failure when compared to healthy bone material, while the strength of osteoporotic and healthy bone was similar. Surprisingly, the increased strain to failure for osteoporotic bone material provided enhanced toughness relative to the control samples, suggesting that lowering of bone fragility due to osteoporosis is not defined by material performance. A mechanism is suggested based on these results and previous literature that indicates degradation of the organic material in osteoporosis bone is responsible for resultant mechanical properties

Structural orientation dependent sub-lamellar bone mechanics

The lamellar unit is a critical component in defining the overall mechanical properties of bone. In this paper, micro-beams of bone with dimensions comparable to the lamellar unit were fabricated using focused ion beam (FIB) microscopy and mechanically tested in bending to failure using atomic force microscopy (AFM). A variation in the mechanical properties, including elastic modulus, strength and work to fracture of the micro-beams was observed and related to the collagen fibril orientation inferred from back-scattered scanning electron microscopy (SEM) imaging. Established mechanical models were further applied to describe the relationship between collagen fibril orientation and mechanical behaviour of the lamellar unit. Our results highlight the ability to measure mechanical properties of discrete bone volumes directly and correlate with structural orientation of collagen fibrils

The clinical relevance of oliguria in the critically ill patient : Analysis of a large observational database

Funding Information: Marc Leone reports receiving consulting fees from Amomed and Aguettant; lecture fees from MSD, Pfizer, Octapharma, 3 M, Aspen, Orion; travel support from LFB; and grant support from PHRC IR and his institution. JLV is the Editor-in-Chief of Critical Care. The other authors declare that they have no relevant financial interests. Publisher Copyright: © 2020 The Author(s). Copyright: Copyright 2020 Elsevier B.V., All rights reserved.Background: Urine output is widely used as one of the criteria for the diagnosis and staging of acute renal failure, but few studies have specifically assessed the role of oliguria as a marker of acute renal failure or outcomes in general intensive care unit (ICU) patients. Using a large multinational database, we therefore evaluated the occurrence of oliguria (defined as a urine output 16 years) patients in the ICON audit who had a urine output measurement on the day of admission were included. To investigate the association between oliguria and mortality, we used a multilevel analysis. Results: Of the 8292 patients included, 2050 (24.7%) were oliguric during the first 24 h of admission. Patients with oliguria on admission who had at least one additional 24-h urine output recorded during their ICU stay (n = 1349) were divided into three groups: transient - oliguria resolved within 48 h after the admission day (n = 390 [28.9%]), prolonged - oliguria resolved > 48 h after the admission day (n = 141 [10.5%]), and permanent - oliguria persisting for the whole ICU stay or again present at the end of the ICU stay (n = 818 [60.6%]). ICU and hospital mortality rates were higher in patients with oliguria than in those without, except for patients with transient oliguria who had significantly lower mortality rates than non-oliguric patients. In multilevel analysis, the need for RRT was associated with a significantly higher risk of death (OR = 1.51 [95% CI 1.19-1.91], p = 0.001), but the presence of oliguria on admission was not (OR = 1.14 [95% CI 0.97-1.34], p = 0.103). Conclusions: Oliguria is common in ICU patients and may have a relatively benign nature if only transient. The duration of oliguria and need for RRT are associated with worse outcome.publishersversionPeer reviewe

A922 Sequential measurement of 1 hour creatinine clearance (1-CRCL) in critically ill patients at risk of acute kidney injury (AKI)

Meeting abstrac

Nurses' perceptions of aids and obstacles to the provision of optimal end of life care in ICU

Contains fulltext : 172380.pdf (publisher's version ) (Open Access

Post-yield and failure properties of cortical bone

Ageing and associated skeletal diseases pose a significant challenge for health care systems worldwide. Age-related fractures have a serious impact on personal, social and economic wellbeing. A significant proportion of physiological loading is carried by the cortical shell. Its role in the fracture resistance and strength of whole bones in the ageing skeleton is of utmost importance. Even though a large body of knowledge has been accumulated on this topic on the macroscale, the underlying micromechanical material behaviour and the scale transition of bone's mechanical properties are yet to be uncovered. Therefore, this review aims at providing an overview of the state-of-the-art of the post-yield and failure properties of cortical bone at the extracellular matrix and the tissue level

Assessment of the worldwide burden of critical illness: The Intensive Care Over Nations (ICON) audit

Background Global epidemiological data regarding outcomes for patients in intensive care units (ICUs) are scarce, but are important in understanding the worldwide burden of critical illness. We, therefore, did an international audit of ICU patients worldwide and assessed variations between hospitals and countries in terms of ICU mortality.Methods 730 participating centres in 84 countries prospectively collected data on all adult (>16 years) patients admitted to their ICU between May 8 and May 18, 2012, except those admitted for fewer than 24 h for routine postoperative monitoring. Participation was voluntary. Data were collected daily for a maximum of 28 days in the ICU and patients were followed up for outcome data until death or hospital discharge. In-hospital death was analysed using multilevel logistic regression with three levels: patient, hospital, and country.Findings 10 069 patients were included from ICUs in Europe (5445 patients; 54.1%), Asia (1928; 19.2%), the Americas (1723; 17.1%), Oceania (439; 4.4%), the Middle East (393; 3.9%), and Africa (141; 1.4%). Overall, 2973 patients (29.5%) had sepsis on admission or during the ICU stay. ICU mortality rates were 16.2% (95% CI 15.5-16.9) across the whole population and 25.8% (24.2-27.4) in patients with sepsis. Hospital mortality rates were 22.4% (21.6-23.2) in the whole population and 35.3% (33.5-37.1) in patients with sepsis. Using a multilevel analysis, the unconditional model suggested significant between-country variations (var=0.19, p=0.002) and between-hospital variations (var=0.43, p<0.0001) in the individual risk of in-hospital death. There was a stepwise increase in the adjusted risk of in-hospital death according to decrease in global national income.Interpretation This large database highlights that sepsis remains a major health problem worldwide, associated with high mortality rates in all countries. Our findings also show a significant association between the risk of death and the global national income and suggest that ICU organisation has an important effect on risk of death

age: Observational data from the ICON audit

Purpose: To investigate age-related differences in outcomes of critically ill patients with sepsis around the world.Methods: We performed a secondary analysis of data from the prospective ICON audit, in which all adult ( >16 years ) patients admitted to participating ICUs between May 8 and 18, 2012, were included, except admissions for routine postoperative observation. For this sub-analysis, the 10,012 patients with completed age data were included. They were divided into five age groups - 80 years. Sepsis was defined as infection plus at least one organ failure.Results: A total of 2963 patients had sepsis, with similar proportions across the age groups (80 = 30.9%). Hospital mortality increased with age and in patients >80 years was almost twice that of patients 70 years was independently associated with increased risk of dying.Conclusions: The odds for death in ICU patients with sepsis increased with age with the maximal rate of increase occurring between the ages of 71 and 77 years. (C) 2019 Elsevier Inc. All rights reserved.C1 [Kotfis, Katarzyna] Pomeranian Med Univ, Dept Anaesthesiol Intens Therapy & Acute Intoxica, Szczecin, Poland.[Wittebole, Xavier] UCL, Clin Univ St Luc, Dept Crit Care, Brussels, Belgium.[Jaschinski, Ulrich] Klinikum Augsburg, Klin Anasthesiol & Operat Intens Med, Augsburg, Germany.[Sole-Violan, Jordi] Hosp Univ Gran Canaria Dr Negrin, Dept Intens Care, Las Palmas Gran Canaria, Spain.[Kashyap, Rahul] Mayo Clin, Dept Anesthesia Ei Perioperat Med, Rochester, MN USA.[Leone, Marc] Aix Marseille Univ, Hop Nord, AP HM, Serv Anesthesie & Reanimat, Marseille, France.[Nanchal, Rahul] Med Coll Wisconsin, Dept Med, Milwaukee, WI 53226 USA.[Fontes, Luis E.] Hosp Alcides Carneiro, Petropolis Med Sch, Dept Intens Care & Evidence Based Med, Petropolis, Brazil.[Sakr, Yasser] Uniklinikum Jena, Dept Anesthesiol & Intens Care, Jena, Germany.[Vincent, Jean-Louis] Univ Libre Bruxelles, Erasme Univ Hosp, Dept Intens Care, Route Lenn 808, B-1070 Brussels, Belgium.[Tomas, E.] Clin Sagrada Esperanca, Luanda, Angola.[Bibonge, E. Amisi] Clin Univ Kinshasa, Kinshasa, DEM REP CONGO.[Charra, B.] Chu Ibn Rochd Casablanca, Casablanca, Morocco.[Faroudy, M.] Ibn Sina Hosp, Rabat, Morocco.[Doedens, L.] Chris Hani Baragwanath Acad Hosp, Soweto, South Africa.[Farina, Z.] Grays Hosp, Pietermaritzburg, South Africa.[Adler, D.] Sandton Medi Clin, Sandton, South Africa.[Balkema, C.] Tygerberg Hosp, Cape Town, South Africa.[Kok, A.] Union Hosp Alberton, Alberton, South Africa.[Alaya, S.] Bizerte Hosp, Bizerte, Tunisia.[Gharsallah, H.] Mil Hosp Tunis, Tunis, Tunisia.[Muzha, D.] Natl Trauma Ctr & Mil Hosp, Tirana, Albania.[Temelkov, A.] Alexandrovska Univ Hosp, Sofia, Bulgaria.[Georgiev, G.] Emergency Univ Hosp Pirogov, Sofia, Bulgaria.[Simeonov, G.] Tokuda Hosp Sofia, Sofia, Bulgaria.[Tsaryanski, G.] Uh St Ekaterina Sofia, Sofia, Bulgaria.[Georgiev, S.] Univ Hosp Obstet & Gynaecol, Sofia, Bulgaria.[Seliman, A.] Univ Hosp Sveta Marina Varna, Varna, Bulgaria.[Vrankovic, S.] Gen Hosp Siben, Shibenik, Croatia.[Vucicevic, Z.] Univ Hosp Ctr Sestre Milosrdnice, Zagreb, Croatia.[Gornik, I] Univ Hosp Ctr Zagreb, Zagreb, Croatia.[Barsic, B.] Univ Hosp Infect Dis, Zagreb, Croatia.[Husedzinovic, I] Univ Hosp Dubrava, Zagreb, Croatia.[Pavlik, P.] Ctr Cardiovasc & Transplant Surg, Prague, Czech Republic.[Manak, J.] Charles Univ Hosp, Prague, Czech Republic.[Kieslichova, E.] IKEM, Prague, Czech Republic.[Turek, R.] KNTB Zlin AS, Prague, Czech Republic.[Fischer, M.] Krajska Nemocnice Liberec, Prague, Czech Republic.[Valkova, R.] Masarykova Nemocnice V Usti Labem, Labem, Czech Republic.[Dadak, L.] St Annes Univ Hosp Brno, Brno, Czech Republic.[Dostal, P.] Univ Hosp Haradec Kralove, Haradec Kralove, Czech Republic.[Malaska, J.] Univ Hosp Brno, Brno, Czech Republic.[Hajek, R.] Univ Hosp Olomouc, Olomouc, Czech Republic.[Zidkova, A.] Univ Hosp Plzen, Plzen, Czech Republic.[Lavicka, P.] Charles Univ Hosp Plzen, Plzen, Czech Republic.[Starkopf, J.] Tartu Univ Hosp, Tartu, Estonia.[Kheladze, Z.] Crit Care Med Inst, Gainesville, Georgia.[Chkhaidze, M.] Jo Ann Med Ctr, Tbilisi, Georgia.[Kaloiani, V] Kipshidze Cent Univ Hosp, Tbilisi, Georgia.[Medve, L.] Dr Kenessey Albert Hosp, Balassagyarmat, Hungary.[Sarkany, A.] Fejer Cty St George Teaching Hosp, Szekesfehervar, Hungary.[Kremer, I] Flor Ferenc Cty Hosp, Budapest, Hungary.[Marjanek, Z.] Javorszky Odon Hosp, Vac, Hungary.[Tamasi, P.] Peterfy Hosp Budapest, Budapest, Hungary.[Krupnova, I] Infectol Ctr Latvia, Riga, Latvia.[Vanags, I] Paul Stradins Clin Univ Hosp, Riga, Latvia.[Liguts, V] Riga East Clin Univ Hosp, Riga, Latvia.[Pilvinis, V] Hosp Lithuanian Univ Hlth Sci Kauno Klinikos, Kaunas, Lithuania.[Vosylius, S.] Vilnius Univ Hosp, Vilnius, Lithuania.[Kekstas, G.] HSICU, Vilnius Univ Hosp Santariskiu Clin, Vilnius, Lithuania.[Balciunas, M.] CICU, Vilnius Univ Hosp Santariskiu Clin, Vilnius, Lithuania.[Kolbusz, A.] Csk Mswia, Warsaw, Poland.[Kubler, A.] Med Univ, Wroclaw, Poland.[Mielczarek, B.] Med Univ Wroclaw, Wroclaw, Poland.[Mikaszewska-Sokolewicz, M.] Med Univ Warsaw, Warsaw, Poland.[Kotfis, K.] Pomeranian Med Univ, Szczecin, Poland.[Tamowicz, B.] Reg Hosp Poznan, Poznan, Poland.[Sulkowski, W.] Szpital Powiatowy W Ostrowi Mazowieckiej, Ostrow Mazowiecka, Poland.[Smuszkiewicz, P.] Univ Hosp, Poznan, Poland.[Pihowicz, A.] Wojewodzki Szpital Zakazny, Torun, Poland.[Trejnowska, E.] Wojewodzkie Ctr Med, Warsaw, Poland.[Hagau, N.] Emergency Cty Hosp Cluj, Cluj Napoca, Romania.[Filipescu, D.] Emergency Inst Cardiovasc Dis, Bucharest, Romania.[Droc, G.] Fundeni Clin Inst, Bucharest, Romania.[Lupu, M.] Galati Hosp, Bucharest, Romania.[Nica, A.] Lnbi Prof Dr Matei Bals, Bucharest, Romania.[Stoica, R.] Inst Pulmonol Marius Nasta, Bucharest, Romania.[Tomescu, D.] Inst Clin Fundeni, Bucharest, Romania.[Constantinescu, D.] Sfantul Pantelimon Hosp, Bucharest, Romania.[Zbaganu, G. Valcoreanu] Spitalul Cf 2 Bucuresti, Bucharest, Romania.[Slavcovici, A.] Iuliu Hatieganu Univ Med & Pharm, Teaching Hosp Infect Dis, Cluj Napoca, Romania.[Bagin, V] City Clin Hosp 40, St Petersburg, Russia.[Belsky, D.] City Hosp 40, St Petersburg, Russia.[Palyutin, S.] Clin Hosp NVNV Solovyev, Yaroslavl, Russia.[Shlyapnikov, S.] Emergency Res Inst NA Djanelidze, St Petersburg, Russia.[Bikkulova, D.] Fed Res Ctr Paediat Haematol Oncol & Immunol, Moscow, Russia.[Gritsan, A.] Krasnoyarsk State Med Univ, Krasnoyarsk Reg Hosp, Krasnoyarsk, Russia.[Natalia, G.] Med Assoc Novaya Bolnitsa, Ekaterinburg, Russia.[Makarenko, E.] Mil Med Acad, Ekaterinburg, Russia.[Kokhno, V] Novosibirsk Med Univ, Novosibirsk, Russia.[Tolkach, A.] Omsk Reg Clin Hosp, Omsk, Russia.[Kokarev, E.] Railway Hosp Khabarovsk, Khabarovsk, Russia.[Belotserkovskiy, B.] St Alexy Hosp, St Louis, France.[Zolotukhin, K.] State Dist Hosp, Moscow, Russia.[Kulabukhov, V] Vishnevsky Inst Surg, Moscow, Russia.[Soskic, L.] Clin Ctr Serbia, Clin Cardiac Surg, Belgrade, Serbia.[Palibrk, I] Clin Ctr Serbia, Clin Digest Surg, Belgrade, Serbia.[Jankovic, R.; Jovanovic, B.] Clin Ctr Nis, Clin Vasc Surg, Nish, Serbia.[Pandurovic, M.] Clin Ctr Serbia, Emergency Ctr, Belgrade, Serbia.[Bumbasirevic, V] Clin Ctr Belgrade, Emergency Ctr, Belgrade, Serbia.[Uljarevic, B.] Gen Univ Hosp, Belgrade, Serbia.[Surbatovic, M.] Mil Med Acad, Belgrade, Serbia.[Ladjevic, N.] Urol Hosp, Belgrade, Serbia.[Slobodianiuk, G.] Dist Hosp, Bratislava, Slovakia.[Sobona, V] Fac Hosp, Bratislava, Slovakia.[Cikova, A.] Univ Hosp Bratislava, Hosp Ruzinov ICU, Bratislava, Slovakia.[Gebhardtova, A.] Univ Hosp Ruzinov Bratislava, Bratislava, Slovakia.[Jun, C.] Qingdao Univ, Tertiary Hosp, Qingdao, Shandong, Peoples R China.[Yunbo, S.] Qingdao Univ, Affiliated Hosp, Med Coll, Qingdao, Shandong, Peoples R China.[Dong, U.] Beijing Canc Hosp, Beijing Inst Canc Res, Beijing, Peoples R China.[Feng, S.] Beijing Chaoyang Hosp, Beijing, Peoples R China.[Duan, M.] Beijing Friendship Hosp, Beijing, Peoples R China.[Xu, Y.] Capital Med Univ, Beijing Tongren Hosp, Beijing, Peoples R China.[Xue, X.] Beijing Univ Peoples Hosp, Beijing, Peoples R China.[Gao, T.] Beijing Luhe Hosp, Beijing, Peoples R China.[Xing, X.] Chinese Acad Med Sci, Canc Hosp, Beijing, Peoples R China.[Zhao, X.] China Acad Chinese Med Sci, Guang An Men Hosp, Beijing, Peoples R China.[Li, C.] Peoples Hosp, Chuxiong, Yunnan, Peoples R China.[Gengxihua, G.] Donge Cty Peoples Hosp Shandong Prov, Liaocheng, Shandong, Peoples R China.[Tan, H.] Chinese Acad Med Sci, Fu Wai Hosp, Beijing, Peoples R China.[Xu, J.] Fujian Prov Hosp, Fuzhou, Fujian, Peoples R China.[Jiang, L.] Capital Med Univ, Fuxing Hosp, Beijing, Peoples R China.[Tiehe, Q.] Guangdong Gen Hosp, Guangzhou, Guangdong, Peoples R China.[Bingyu, Q.] Henan Prov Peoples Hosp, Zhengzhou, Henan, Peoples R China.[Shi, Q.] Xi An Jiao Tong Univ, Coll Med, Xian, Shaanxi, Peoples R China.[Lv, Z.] Kunming Third Peoples Hosp, Kunming, Yunnan, Peoples R China.[Zhang, L.] Lanzhou Univ, Hosp 2, Lanzhou, Gansu, Peoples R China.[Jingtao, L.] 309th Hosp, Beijing, Peoples R China.[Zhen, Z.] China Med Univ, Hosp 1, Beijing, Peoples R China.[Wang, Z.] Peking Univ, Shougang Hosp, Beijing, Peoples R China.[Wang, T.] Peking Univ, Hosp 3, Beijing, Peoples R China.[Yuhong, L.] Pla Navy Gen Hosp, Beijing, Peoples R China.[Zhai, Q.] Shandong Univ, Qilu Hosp, Jinan, Shandong, Peoples R China.[Chen, Y.] Jiaotong Univ, Affiliated Med Sch, Ruijin Hosp, Shanghai, Peoples R China.[Wang, C.] Shandong Prov Hosp, Jinan, Shandong, Peoples R China.[Jiang, W.] Shanghai 10th Peoples Hosp, Shanghai, Peoples R China.[Ruilan, W.] Shanghai First Peoples Hosp, Shanghai, Peoples R China.[Chen, Y.; Xiaobo, H.] Sichuan Prov Peoples Hosp, Chengdu, Sichuan, Peoples R China.[Ge, H.] Sir Run Run Shaw Hosp, Hangzhou, Zhejiang, Peoples R China.[Yan, T.] Affiliated Guiyang Med Coll, Guiyang, Guizhou, Peoples R China.[Yuhui, C.] Fudan Univ, Peoples Hosp Shanghai 5, Shanghai, Peoples R China.[Zhang, J.] Dalian Med Univ, Affiliated Hosp 1, Dalian, Peoples R China.[Jian-Hong, F.] Suzhou Univ, Affiliated Hosp 1, Suzhou, Peoples R China.[Zhu, H.] Xinjiang Med Univ, Affiliated Hosp 1, Urumqi, Peoples R China.[Huo, F.; Wang, Y.] Jilin Univ, Hosp 1, Changchun, Jilin, Peoples R China.[Li, C.] First Peoples Hosp Kunming, Kunming, Yunnan, Peoples R China.[Zhuang, M.] Gen Hosp Shenyang Mil Reg, Shenyang, Liaoning, Peoples R China.[Ma, Z.] Peoples Hosp Cangzhou, Cangzhou, Peoples R China.[Sun, J.] Jilin Univ, Hosp 2, Changchun, Jilin, Peoples R China.[Liuqingyue, L.] Second Peoples Hosp Liaocheng City Shandong Prov, Liaocheng, Shandong, Peoples R China.[Yang, M.] Third Xiangya Hosp, Changsha, Hunan, Peoples R China.[Meng, J.] Tongde Hosp Zhejiang Prov, Hangzhou, Zhejiang, Peoples R China.[Ma, S.] Tongji Univ, Shanghai East Hosp, Shanghai, Peoples R China.[Kang, Y.] West China Hosp, Scu, Peoples R China.[Yu, L.] Wuhan Ctr Hosp, Wuhan, Hubei, Peoples R China.[Peng, Q.] Xiangya Hosp, Changsha, Hunan, Peoples R China.[Wei, Y.] Yantai Yuhuangding Hosp, Yantai, Peoples R China.[Zhang, W.] Yantaishan Hosp, Yantai, Shandong, Peoples R China.[Sun, R.] Zhejiang Prov Peoples Hosp, Hangzhou, Zhejiang, Peoples R China.[Yeung, A.] Pamela Youde Nethersole Eastern Hosp, Hong Kong, Peoples R China.[Wan, W.] Princess Margaret Hosp, Hong Kong, Peoples R China.[Sin, K.] Queen Elizabeth Hosp, Hong Kong, Peoples R China.[Lee, K.] United Christian Hosp Hong Kong SAR, Hong Kong, Peoples R China.[Wijanti, M.] Anestesi, Yogyakarta, Indonesia.[Widodo, U.] Pku Muhammadiyah Bantu, Yogyakarta, Indonesia.[Samsirun, H.] Rd Mattaher Hosp Jambi, Jambi City, Indonesia.[Sugiman, T.] Rumah Sakit Pantai Lndah Kapuk, North Jakarta, Indonesia.[Wisudarti, C.] Sardjito Hosp, Yogyakarta, Indonesia.[Maskoen, T.] Sch Med Unpad, Hasan Sadikin Hosp, Bandung, Indonesia.[Hata, N.] Nippon Med Sch, Chiba Hokusoh Hosp, Inzai, Japan.[Kobe, Y.] Chiba Univ Hosp, Chiba, Japan.[Nishida, O.] Fujita Hlth Univ, Sch Med, Toyoake, Aichi, Japan.[Miyazaki, D.] Japanese Red Cross Maebashi Hosp, Maebashi, Gumma, Japan.[Nunomiya, S.] Jichi Med Univ Hosp, Shimotsuke, Japan.[Uchino, S.] Jikei Univ, Sch Med, Tokyo, Japan.[Kitamura, N.] Kimitsu Chuo Hosp, Kisarazu, Japan.[Yamashita, K.] Kochi Med Sch, Nankoku, Kochi, Japan.[Hashimoto, S.] Kyoto Prefectural Univ Med, Kyoto, Japan.[Fukushima, H.] Nara Med Univ Hosp, Kashihara, Nara, Japan.[Adib, N. Nik] Hosp Sultanah Nur Zahirah, Kuala Terengganu, Terengganu, Malaysia.[Tai, L.] Kuala Lumpur Hosp, Kuala Lumpur, Malaysia.[Tony, B.] Queen Elizabeth Hosp 2, Kota Kinabalu, Malaysia.[Bigornia, R.] Cebu Velez Gen Hosp, Cebu, Philippines.[Bigornia, R.] Perpetual Succour Hosp, Cebu, Philippines.[Palo, J.] Med City, Pasig, Philippines.[Chatterjee, S.] Alexandra Hosp, Singapore, Singapore.[Tan, B.] Natl Univ Hlth Syst, Singapore, Singapore.[Kong, A.] Singapore Gen Hosp, Singapore, Singapore.[Goh, S.] Tan Tock Seng Hosp, Singapore, Singapore.[Lee, C.] Natl Taiwan Univ Hosp, Taipei, Taiwan.[Pothirat, C.] Chiaingmai Univ, Maharaj Nakorn Chiangmai Hosp, Chiang Mai, Thailand.[Khwannimit, B.] Prince Songkla Univ, Hat Yai, Thailand.[Theerawit, P.] Ramathibodi Hosp, Bangkok, Thailand.[Pornsuriyasak, P.] Ramathibodi Hosp, Somdech Phra Debaratana Med Ctr, Bangkok, Thailand.[Piriyapatsom, A.] Mahidol Univ, Siriraj Hosp, Bangkok, Thailand.[Mukhtar, A.] Cairo Univ, Giza, Egypt.[Dsicu] Demerdash Surg Intens Care Unit, Cairo, Egypt.[Hamdy, A. Nabil] Ain Shams Fac Med, Cairo, Egypt.[Hosny, H.] Zaitoun Specialized Hosp, Cairo, Egypt.[Ashraf, A.] Gums, Tehran, Iran.[Mokhtari, M.] Sbums, Imam Hossein Hosp, Tehran, Iran.[Nowruzinia, S.] Imamreza Hosp, Mashhad, Razavi Khorasan, Iran.[Lotfi, A.] Laleh Hosp, Tehran, Iran.[Zand, F.] Shiraz Anesthesiol & Crit Care Res Ctr, Shiraz, Iran.[Nikandish, R.] Shiraz Univ Med Sci, Shiraz, Iran.[Moghaddam, O. Moradi] Tehran Med Sci Univ, Tehran, Iran.[Cohen, J.] Rabin Med Ctr, Petah Tiqwa, Israel.[Sold, O.] Sourasky Tel Aviv Med Ctr, Tel Aviv, Israel.[Sfeir, T.] Ctr Hosp Nord, Ettelbruck, Luxembourg.[Hasan, A.] Sohar Hosp, Sohar, Oman.[Abugaber, D.] Specialized Arab Hosp, Nablus, Palestine.[Ahmad, H.] Almana Gen Hosp, Khobar, Saudi Arabia.[Tantawy, T.] KFSHRC, Riyadh, Saudi Arabia.[Baharoom, S.] King Abdulaziz Med City Riyadh, Riyadh, Saudi Arabia.[Algethamy, H.] King Abdulaziz Univ, Jeddah, Saudi Arabia.[Amr, A.] King Saud Med City, Riyadh, Saudi Arabia.[Almekhlafi, G.] Riyadh Mil Hosp, Riyadh, Saudi Arabia.[Coskun, R.] Erciyes Univ, Med Fac, Kayseri, Turkey.[Sungur, M.] Erciyes Univ, Med Sch, Kayseri, Turkey.[Cosar, A.] Gulhane Mil Med Acad, Ankara, Turkey.[Gucyetmez, B.] Int Hosp, Istanbul, Turkey.[Demirkiran, O.] Istanbul Univ, Cerrahpasa Med Sch Hosp, Istanbul, Turkey.[Senturk, E.] Istanbul Univ, Istanbul Med Fac, Istanbul, Turkey.[Ulusoy, H.] Karadeniz Tech Univ, Med Fac, Trabzon, Turkey.[Atalan, H.] Mem Atasehir Hosp, Istanbul, Turkey.[Serin, S.] Pamukkale Univ, Denizli, Turkey.[Kati, I] Yuzuncu Yil Univ, Med Fac, Van, Turkey.[Alnassrawi, Z.] Dubai Hosp, Dubai, U Arab Emirates.[Almemari, A.] Mafraq Hosp, Abu Dhabi, U Arab Emirates.[Krishnareddy, K.] Sheikh Khalifa Med City, Abu Dhabi, U Arab Emirates.[Kashef, S.] Tawam Hosp, Al Ain, U Arab Emirates.[Alsabbah, A.] City Hosp, Dubai, U Arab Emirates.[Poirier, G.] Hop Charles Lemoyne, Longueuil, PQ, Canada.[Marshall, J.] St Michaels Hosp, Toronto, ON, Canada.[Herridge, M.] Toronto Gen Hosp, Toronto, ON, Canada.[Herridge, M.] Toronto Western Hosp, Toronto, ON, Canada.[Fernandez-Medero, R.] San Juan Hosp, San Juan, PR USA.[Fulda, G.] Christiana Care Hlth Syst, Newark, DE USA.[Banschbach, S.] Cincinnati Childrens Hosp Med Ctr, Cincinnati, OH 45229 USA.[Quintero, J.] El Camino Hosp, Mountain View, CA USA.[Schroeder, E.] George Washington Hosp, Washington, DC USA.[Sicoutris, C.] Hosp Univ Penn, Philadelphia, PA 19104 USA.[Gueret, R.] John H Stroger Hosp Cook Cty, Chicago, IL USA.[Kashyap, R.] Mayo Clin, CCM, Rochester, MN USA.[Bauer, P.] Mayo Clin, PCC, Rochester, MN USA.[Nanchal, R.] Med Coll Wisconsin, Milwaukee, WI 53226 USA.[Wunderink, R.] Northwestern Mem Hosp, Chicago, IL 60611 USA.[Jimenez, E.] Orlando Reg Med Ctr Inc, Orlando, FL USA.[Ryan, A.] Washington Hosp Ctr, Washington, DC 20010 USA.[Ryan, A.] Washington Hosp Ctr, 2H, Washington, DC USA.[Ryan, A.] Washington Hosp Ctr, 2G, Washington, DC USA.[Ryan, A.] Washington Hosp Ctr, 3H, Washington, DC USA.[Ryan, A.] Washington Hosp Ctr, 3G, Washington, DC USA.[Ryan, A.] Washington Hosp Ctr, 4H, Washington, DC USA.[Ryan, A.] Washington Hosp Ctr, CVRR, Washington, DC USA.[Prince, D.] Armadale Hlth Serv, Mount Nasura, WA, Australia.[Edington, J.] Bendigo Hosp, Bendigo, Vic, Australia.[Van Haren, F.] Canberra Hosp, Canberra, ACT, Australia.[Bersten, A.] Flinders Med Ctr, Bedford Pk, SA, Australia.[Hawkins, D. J.] Joondalup Hlth Campus, Joondalup, WA, Australia.[Kilminster, M.] Lismore Base Hosp, Lismore, NSW, Australia.[Sturgess, D.] Mater Adult Hosp, South Brisbane, Qld, Australia.[Ziegenfuss, M.] Prince Charles Hosp, Brisbane, Qld, Australia.[O'Connor, S.] Royal Adelaide Hosp, Adelaide, SA, Australia.[Lipman, J.] Royal Brisbane & Womens Hosp, Brisbane, Qld, Australia.[Campbell, L.] Royal Darwin Hosp, Tiwi, NT, Australia.[Mcallister, R.] Royal Hobart Hosp, Hobart, Tas, Australia.[Roberts, B.] Sir Charles Gairdner Hosp, Nedlands, WA, Australia.[Williams, P.] Queen Elizabeth Hosp, Woodville, SA, Australia.[Parke, R.] Auckland Dist Hlth Board, Auckland, New Zealand.[Seigne, P.] Christchurch Hosp, Christchurch, New Zealand.[Freebairn, R.] Hawkes Bay Hosp, Hastings, New Zealand.[Nistor, D.] Palmerston North Hosp, Midcent Hlth, Palmerston North, New Zealand.[Oxley, C.] Middlemore Hosp, Auckland, New Zealand.[Young, P.] Wellington Hosp, Wellington, New Zealand.[Valentini, R.] Cemic, Buenos Aires, DF, Argentina.[Wainsztein, N.] Fleni, Buenos Aires, DF, Argentina.[Comignani, P.] Hosp Aleman, Buenos Aires, DF, Argentina.[Casaretto, M.] Hosp Cent San Isidro, Buenos Aires, DF, Argentina.[Sutton, G.] Hosp Fernandez, Buenos Aires, DF, Argentina.[Villegas, P.] Hosp Francisco Lopez Lima Area Programa Gen Roca, Gen Roca, Argentina.[Galletti, C.] Sanatorio Allende, Cordoba, Argentina.[Neira, J.] Sanatorio Trinidad Palermo, Buenos Aires, DF, Argentina.[Rovira, D.] Sanatorio Julio Corzo Rosario, Rosario, Santa Fe, Argentina.[Hidalgo, J.] Karl Heusner Mem Hosp, Belize City, Belize.[Hidalgo, J.] Belize Healthcare Partner, Belize City, Belize.[Sandi, F.] Hosp Obrero 1, La Paz, Bolivia.[Caser, E.] Cias Unimed Vitoria, Vitoria, ES, Brazil.[Thompson, M.] Evangelical Hosp Cachoeiro De Itapemirim, Cachoeiro De Itapemirim, Brazil.[D'agostino Dias, M.] Hosp 9 Julho, Sao Paulo, Brazil.[Fontes, L.] Hosp Alcides Carneiro, Petropolis, Brazil.[Lunardi, M.] Hosp Clin Luzia De Pinho Melo, Mogi Das Cruzes, Brazil.[Youssef, N.] Hosp Nacoes Curitiba, Curitiba, Parana, Brazil.[Lobo, S.] Hosp Base Famerp, Sao Jose Do Rio Preto, Brazil.[Silva, R.] Hosp Clin Niteroi, Niteroi, RJ, Brazil.[Sales Jr, J.] Hosp Clin Padre Miguel, Rio De Janeiro, Brazil.[Madeira Campos Melo, L.] Hosp Terapia Intens, Sao Paulo, Brazil.[Oliveira, M.] Hosp Trabalhador, Curitiba, Parana, Brazil.[Fonte, M.] Hosp Esperanza, Olinda, PE, Brazil.[Grion, C.] Hosp Evangel Londrina, Londrina, Brazil.[Feijo, C.] Hosp Geral Fortaleza, Fortaleza, Ceara, Brazil.[Rezende, V] Hosp Geral Roraima, Boa Vista, Brazil.[Assuncao, M.] Hosp Israelita Albert Einstein, Sao Paulo, Brazil.[Neves, A.] Hosp Mater Dei, Belo Horizonte, MG, Brazil.[Gusman, P.; Dalcomune, D.] Hosp Meridional, Cariacica, ES, Brazil.[Teixeira, C.] Hosp Moinhos Vento, Porto Alegre, RS, Brazil.[Kaefer, K.] Hosp Municipal Ruth Cardoso, Balneario, Brazil.[Maia, I] Hosp Nereu Ramos, Florianopolis, SC, Brazil.[Souza Dantas, V] Hosp Pasteur, Rio De Janeiro, Brazil.[Costa Filho, R.] Hosp Pro Cardiaco, Rio De Janeiro, Brazil.[Amorim, F.] Hosp Reg Samambaia, Brasilia, DF, Brazil.[Assef, M.] Hosp Reg Hans Dieter Schmidt, Joinville, Brazil.[Schiavetto, P.] Hosp Santa Casa Campo Mourao, Campo Mourao, PR, Brazil.[Houly, J.] Hosp Santa Paula, Sao Paulo, SP, Brazil.[Houly, J.] Hosp Santapaula, Sao Paulo, Brazil.[Bianchi, F.] Hosp Sao Jose Avai, Itaperuna, RJ, Brazil.[Dias, F.] Hosp Sao Lucas Pucrs, Porto Alegre, RS, Brazil.[Avila, C.] Hosp Sao Vicente Paula, Rio De Janeiro, RJ, Brazil.[Gomez, J.] Hosp Sao Vicente Paulo, Rio De Janeiro, Brazil.[Rego, L.] Hosp Saude Mulher, Belem, Para, Brazil.[Castro, P.] Hosp Tacchini, Bento Goncalves, RS, Brazil.[Passos, J.] Hosp Unimed Costa Do Sol Macae Rj, Macae, RJ, Brazil.[Mendes, C.] Hosp Univ Ufpb Joao Pessoa, Joao Pessoa, Paraiba, Brazil.[Grion, C.] Hosp Univ Londrina, Londrina, Brazil.[Colozza Mecatti, G.] Hosp Univ Sao Francisco, Braganca Paulista, SP, Brazil.[Ferrreira, M.] Santa Casa Caridade Diamantina, Diamantina, MG, Brazil.[Irineu, V] Santa Casa Misericordia Tatui, Tatui, Brazil.[Guerreiro, M.] Sao Francisco de Paula Hosp, Sao Francisco De Paula, RS, Brazil.[Ugarte, S.] Clin Indisa, Providencia, Chile.[Tomicic, V] Clin Las Lilas, Providencia, Chile.[Godoy, C.] Hosp Carlos Van Buren, Valparaiso, Chile.[Samaniego, W.] Hosp Trabajador Santiago, Santiago, Chile.[Escamilla, I] Hosp El Pino, San Bernardo, Chile.[Escamilla, I] Hosp Mutual De Seguridad, Santiago, Chile.[Castro Castro, L.] Ctr Med Imbanaco, Valle Del Cauca, Colombia.[Libreros Duque, G.] Clin Colombia Cali, Cali, Colombia.[Diaz-Guio, D.] Clin Del Cafe, Armenia, Colombia.[Benitez, F.] Clin La Estancia SA, Popayan, Colombia.[Guerra Urrego, A.] Clin Medellin, Medellin, Colombia.[Buitrago, R.] Fdn Clin Shaio, Bogota, Colombia.[Ortiz, G.] Hosp Santa Clara, Bogota, Colomb

Correction to collaborators in acknowledgments in: Decision-making on withholding or withdrawing life support in the ICU: A worldwide perspective

The authors have reported to CHEST that the collaborators from the ICON Investigators were omitted from the Acknowledgments in “Decision-Making on Withholding or Withdrawing Life Support in the ICU: A Worldwide Perspective” (Chest. 2017;152(2):321-329). https://doi.org/10.1016/j.chest.2017.04.17