Sap Flow Responses to Warming and Fruit Load in Young Olive Trees

Global warming will likely lead to temperature increases in many regions of South America where temperatures are already considered to be high for olive production. Thus, experimental studies are needed to assess how water use in olive trees may be affected by global warming. The objectives of this study were to (i) evaluate the response of olive tree sap flow, stomatal conductance, and xylem anatomy to elevated temperature and (ii) determine whether fruit load may affect the temperature responses. A warming experiment using well-irrigated olive trees (cv. Arbequina) in open-top chambers (OTCs) with two temperature levels was performed from fruit set to the end of fruit growth in two seasons. Temperature levels were a near ambient control (T0) and a treatment 4°C above the control (T+). Trees were in the chambers for either one (2015–2016) or two seasons (2014–2015, 2015–2016) and were evaluated only in the second season when all trees were 3 years old. Whole-tree sap flow on leaf area basis, stomatal conductance, and aspects of xylem anatomy were measured. Sap flow was slightly higher in T+ than T0 trees heated for one season early in fruit development (summer) likely due to the elevated temperature and increase in vapor pressure deficit. Later in fruit development (fall), sap flow was substantially higher in the T+ trees heated for one season. Total vessel number per shoot was greater in the T+ than the T0 trees at this time due to more small-diameter vessels in the T+ trees, but this did not appear to explain the greater sap flow. The T+ trees that were heated for two seasons had less fruit load than the T0 trees due to little flowering. In contrast to trees heated for one season, sap flow was less in T+ than controls late in fruit development the second season, which was likely related to lower fruit load. An independent experiment using untreated trees confirmed that sap flow decreases when fruit load is below a threshold value. The results emphasize that multiple, interacting factors should be considered when predicting warming effects on water use in olive orchards.Fil: Miserere, Andrea. Universidad Nacional de La Rioja; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja. - Universidad Nacional de La Rioja. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja. - Universidad Nacional de Catamarca. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja. - Secretaría de Industria y Minería. Servicio Geológico Minero Argentino. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja. - Provincia de La Rioja. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja; ArgentinaFil: Searles, Peter Stoughton. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja. - Universidad Nacional de La Rioja. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja. - Universidad Nacional de Catamarca. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja. - Secretaría de Industria y Minería. Servicio Geológico Minero Argentino. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja. - Provincia de La Rioja. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja; ArgentinaFil: Manchó, Guadalupe. Universidad de Buenos Aires. Facultad de Agronomía; ArgentinaFil: Maseda, Pablo H.. Universidad de Buenos Aires. Facultad de Agronomía; ArgentinaFil: Rousseaux, Maria Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja. - Universidad Nacional de La Rioja. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja. - Universidad Nacional de Catamarca. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja. - Secretaría de Industria y Minería. Servicio Geológico Minero Argentino. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja. - Provincia de La Rioja. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja; Argentin

Prevalence, associated factors and outcomes of pressure injuries in adult intensive care unit patients: the DecubICUs study

Funder: European Society of Intensive Care Medicine; doi: http://dx.doi.org/10.13039/501100013347Funder: Flemish Society for Critical Care NursesAbstract: Purpose: Intensive care unit (ICU) patients are particularly susceptible to developing pressure injuries. Epidemiologic data is however unavailable. We aimed to provide an international picture of the extent of pressure injuries and factors associated with ICU-acquired pressure injuries in adult ICU patients. Methods: International 1-day point-prevalence study; follow-up for outcome assessment until hospital discharge (maximum 12 weeks). Factors associated with ICU-acquired pressure injury and hospital mortality were assessed by generalised linear mixed-effects regression analysis. Results: Data from 13,254 patients in 1117 ICUs (90 countries) revealed 6747 pressure injuries; 3997 (59.2%) were ICU-acquired. Overall prevalence was 26.6% (95% confidence interval [CI] 25.9–27.3). ICU-acquired prevalence was 16.2% (95% CI 15.6–16.8). Sacrum (37%) and heels (19.5%) were most affected. Factors independently associated with ICU-acquired pressure injuries were older age, male sex, being underweight, emergency surgery, higher Simplified Acute Physiology Score II, Braden score 3 days, comorbidities (chronic obstructive pulmonary disease, immunodeficiency), organ support (renal replacement, mechanical ventilation on ICU admission), and being in a low or lower-middle income-economy. Gradually increasing associations with mortality were identified for increasing severity of pressure injury: stage I (odds ratio [OR] 1.5; 95% CI 1.2–1.8), stage II (OR 1.6; 95% CI 1.4–1.9), and stage III or worse (OR 2.8; 95% CI 2.3–3.3). Conclusion: Pressure injuries are common in adult ICU patients. ICU-acquired pressure injuries are associated with mainly intrinsic factors and mortality. Optimal care standards, increased awareness, appropriate resource allocation, and further research into optimal prevention are pivotal to tackle this important patient safety threat

Correction to: Prevalence, associated factors and outcomes of pressure injuries in adult intensive care unit patients: the DecubICUs study

The original version of this article unfortunately contained a mistake

Prevalence, associated factors and outcomes of pressure injuries in adult intensive care unit patients: the DecubICUs study

Funder: European Society of Intensive Care Medicine; doi: http://dx.doi.org/10.13039/501100013347Funder: Flemish Society for Critical Care NursesAbstract: Purpose: Intensive care unit (ICU) patients are particularly susceptible to developing pressure injuries. Epidemiologic data is however unavailable. We aimed to provide an international picture of the extent of pressure injuries and factors associated with ICU-acquired pressure injuries in adult ICU patients. Methods: International 1-day point-prevalence study; follow-up for outcome assessment until hospital discharge (maximum 12 weeks). Factors associated with ICU-acquired pressure injury and hospital mortality were assessed by generalised linear mixed-effects regression analysis. Results: Data from 13,254 patients in 1117 ICUs (90 countries) revealed 6747 pressure injuries; 3997 (59.2%) were ICU-acquired. Overall prevalence was 26.6% (95% confidence interval [CI] 25.9–27.3). ICU-acquired prevalence was 16.2% (95% CI 15.6–16.8). Sacrum (37%) and heels (19.5%) were most affected. Factors independently associated with ICU-acquired pressure injuries were older age, male sex, being underweight, emergency surgery, higher Simplified Acute Physiology Score II, Braden score 3 days, comorbidities (chronic obstructive pulmonary disease, immunodeficiency), organ support (renal replacement, mechanical ventilation on ICU admission), and being in a low or lower-middle income-economy. Gradually increasing associations with mortality were identified for increasing severity of pressure injury: stage I (odds ratio [OR] 1.5; 95% CI 1.2–1.8), stage II (OR 1.6; 95% CI 1.4–1.9), and stage III or worse (OR 2.8; 95% CI 2.3–3.3). Conclusion: Pressure injuries are common in adult ICU patients. ICU-acquired pressure injuries are associated with mainly intrinsic factors and mortality. Optimal care standards, increased awareness, appropriate resource allocation, and further research into optimal prevention are pivotal to tackle this important patient safety threat

Growth potential limits drought morphological plasticity in seedlings from six Eucalyptus provenances

Water stress modifies plant above- vs belowground biomass allocation, i.e., morphological plasticity. It is known that all species and genotypes reduce their growth rate in response to stress, but in the case of water stress it is unclear whether the magnitude of such reduction is linked to the genotype's growth potential, and whether the reduction can be largely attributed to morphological adjustments such as plant allocation and leaf and root anatomy. We subjected seedlings of six seed sources, three from each of Eucalyptus camaldulensis (potentially fast growing) and E. globulus (inherently slow growing), to three experimental water regimes. Biomass, leaf area and root length were measured in a 6-month glasshouse experiment. We then performed functional growth analysis of relative growth rate (RGR), and aboveground (leaf area ratio (LAR), specific leaf area (SLA) and leaf mass ratio (LMR)) and belowground (root length ratio (RLR), specific root length (SRL) and root mass ratio (RMR)) morphological components. Total biomass, root biomass and leaf area were reduced for all Eucalyptus provenances according to drought intensity. All populations exhibited drought plasticity, while those of greater growth potential (RGRmax) had a larger reduction in growth (discounting the effect of size). A positive correlation was observed between drought sensitivity and RGRmax. Aboveground, drought reduced LAR and LMR; under severe drought a negative correlation was found between LMR and RGRmax. Belowground, drought reduced SRL but increased RMR, resulting in no change in RLR. Under severe drought, a negative correlation was found between RLR, SRL and RGRmax. Our evidence strongly supports the classic ecophysiological trade-off between growth potential and drought tolerance for woody seedlings. It also suggests that slow growers would have a low capacity to adjust their morphology. For shoots, this constraint on plasticity was best observed in partition (i.e., LMR) whereas for roots it was clearest in morphology/anatomy (i.e., SRL). Thus, a low RGRmax would limit plastic response to drought not only at the whole plant level but also at the organ and even the tissue level.Fil: Maseda, Pablo H.. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía. ; ArgentinaFil: Fernandez Alduncin, Roberto Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía. ; Argentin

Correction to: Prevalence, associated factors and outcomes of pressure injuries in adult intensive care unit patients: the DecubICUs study (Intensive Care Medicine, (2021), 47, 2, (160-169), 10.1007/s00134-020-06234-9)

1832The original version of this article unfortunately contained a mistake. The members of the ESICM Trials Group Collaborators were not shown in the article but only in the ESM. The full list of collaborators is shown below. The original article has been corrected.openopenLabeau S.O.; Afonso E.; Benbenishty J.; Blackwood B.; Boulanger C.; Brett S.J.; Calvino-Gunther S.; Chaboyer W.; Coyer F.; Deschepper M.; Francois G.; Honore P.M.; Jankovic R.; Khanna A.K.; Llaurado-Serra M.; Lin F.; Rose L.; Rubulotta F.; Saager L.; Williams G.; Blot S.I.; Muzha D.; Ribas A.M.; Lipovesty F.; Loudet C.; Eller P.; Mostafa N.; Honore P.M.; Telleria V.M.; Smajic J.; Nogueira P.C.; Nafees K.M.K.; Hentchoya R.; Soledad J.; Cardenas Y.; Reyes A.G.; Sustic A.; Mpouzika M.; Vymazal T.; Jensen H.I.; Aguirre-Bermeo H.; Maddison L.; Valta M.; Bloos F.; Adipa F.E.; Koulouras V.; Enamorado J.; Agoston Z.; Birgisdottir H.; Gupta A.; Gurjar M.; Kilapong B.; Hashemian S.M.; Martin-Loeches I.; Cortegiani A.; Fletcher K.; Hayashi Y.; Waweru-Siika W.; Abidi K.; Lee S.-M.; Hadri B.; Dolgusevs M.; Abillama F.F.; Jovaisa T.; Thix C.; Elhadi M.; Nor B.M.; Ratnam S.; Mazlan M.Z.; Maiyalagan S.; Sanchez-Hurtado L.; Belii A.; Naranpurev M.; Gautam P.; De lange D.; Parke R.; Ilesanmi R.E.; Shosholcheva M.; Petosic A.; Lind R.; Ffarcsi M.H.; Bogarin J.; Hernandez A.M.; Mikaszewska-Sokolewicz M.; Sousa B.; Tomescu D.; Sandesc D.; Twagirumugabe T.; Gusarov V.; Ebaid M.; Slobodianiuk G.; Martonova A.; Knafelj R.; Mer M.; Maseda E.; Panka B.; Schefold J.C.; Joelsson-Alm E.; Trongtrakul K.; Merritt-Charles L.; Besbes L.O.; Dikmen Y.; Zgrzheblovska L.; Fielding M.; von der Osten I.; Muzha D.; Greca A.; Cani A.; Xhindi N.; Hyska G.; Ribas A.M.; Pinto S.; Alves P.; Esposito R.; Valgolio E.; Minope J.T.S.; Abdala A.; Ayala M.; Bravo S.; Bantar A.; Delgado P.; Badariotti G.; Lipovestky F.; Diaz A.; Saul P.; Setten M.; Aucapina A.; Acosta Y.; Gonzalez V.; Camputaro L.; Baccaro F.; Villa R.; Diaz A.; Mastantuono M.; Dean E.; Rostello O.F.; Brizuela P.; Bartoli J.R.; Guereschi M.; Quiroga C.; Putruele S.; Villegas P.; Curilen V.; Fernandez R.; Nocheretti M.G.; Escalante R.G.; Loudet C.I.; Fernandez S.; Gonzalez A.L.; Alvarez G.A.; Iglesias F.; Chaparro S.; Zakalik G.; Pagella G.; Baini M.; Campos P.A.; Sabbag I.; Schmukler A.; Fonseca I.P.; Alvarez G.M.; Ramirez M.; Tapia F.; Bascary C.A.; del Valle Gimenez G.; Bertoletti F.P.; Milioto E.; Bonsignore P.J.M.; Fernandez M.A.; Smith J.; Chimunda T.; Thompson L.; Maguire T.; Watts S.; Mitchell M.; Powell M.; Lye I.; Parsons L.; Baker N.; Reynolds C.; Thompson A.; Masters K.; Sosnowski K.; Morrison L.; Leslie G.D.; Lakshmanan R.; Tabah A.; Brown W.; McDowell-Skaines S.; McLucas A.; Smith C.; Tallot M.; Jones S.; Barakat-Johnson M.; Leong T.; Butcher R.; Martin K.; Douschan P.; von Lewinski D.; Eller P.; Schmutz R.; Kolussi U.; Salman F.; Ateya Z.; Mostafa N.; De Decker K.; Van Regenmortel N.; Jans A.; Wijnands P.; Coremans S.; De Bels D.; Depuydt T.; Paillet C.; Jacquet L.-M.; Swinnen W.; Hannes F.; Mergeay M.; Van de Velde S.; Allaert S.; Hoste P.; Borin C.; Balon S.; Fraipont V.; Biston P.; De Schryver N.; Dugernier T.; Van Cotthem I.; Telleria V.M.; Smajic J.; de Almeida A.O.; Jorge S.A.; Becker D.; Schmidt R.C.; Oliveira E.; Ramalho A.; Mazocoli E.; Fioretti A.; Barros E.; Serpa L.; Bianchini S.; Campanili T.; Pantaleao T.; Garcia P.C.; Ronchini A.L.V.; Santos R.; Nafees K.M.K.; Manap N.B.A.; Hentchoya R.; Bagshaw S.; Carney D.; Bagshaw S.; Davidow J.; Bagshaw S.; Rokosh E.; Bagshaw S.; Laizner A.M.; Smith S.; McQuirter M.; Kampayana B.S.; Favre R.; Sills M.; Laizner A.M.; Dallaire J.; Laizner A.M.; Becker C.; Microys S.; Bowes B.; Lajeunesse J.; Ghosh R.; Baptiste-Savoie J.; Raizman R.; Bagshaw S.; Suen G.; Taghavi N.; Smith O.; Fielding C.; Canales J.; Molina P.; Chaparro J.; Sepulveda M.I.; Zamorano M.J.F.; Rocha P.; Villanueva X.; Araya P.; Dayan M.; Avalos F.; Li X.; Liu Y.; Li X.; Chen X.; Jiang Z.; Yang J.; Chen J.; Yang L.; Wang K.; Gao J.; Fang X.; Zhao R.; Xia X.; Liu H.; Li J.; Wang H.; Meng G.; Di Y.; Wang D.; Zhao R.H.; Hu L.P.; Fang X.; Peipei X.; Jiao Q.F.; Wang H.Y.; Xia C.J.; Liu Y.; Ye M.; Wan Y.; Wang W.; Ding Y.; Ren A.; Gao Y.; Li Q.; Du G.; Yang J.; Shen Y.; Ding Y.; Li N.; Yuan C.; Li J.; Tan L.; Lin Q.; Guo H.; Yan H.; Xu X.; Zhang W.; Liang J.; Zhang L.; Tian E.; Zhao Q.; InSu L.; Dong J.; Gu Y.; Liu Y.; Zhao L.; Wang W.; Qiao H.; Tuo L.; Lv M.; Zhu J.Y.; Zhu J.F.; Wei Y.; Liu M.; He Y.; Cheng J.; Liu J.; Jia N.; Wei D.; Li Q.; Wu X.; Duan H.; Lin D.; Liang Q.; Luo X.; Xiong Y.; Huang R.F.; Fu J.; Zan T.; Ye M.; Shi Z.; Long Y.; Lei Y.; Liu X.; Yumei C.; Wang L.L.; Zhang Y.; Xu Y.; Cheng; Zhijuan W.; Sun C.; Song J.H.; Wang Y.; Liu X.M.; Liu Y.; Yuan Y.; Huang Q.; Yang F.; Wu Y.; Luo X.; Bai X.; Zheng H.; Song M.; Sun Y.; Li Z.S.; Luo F.; Liu M.; Li L.C.; Li X.; Zhang G.; Xiao L.; Yu T.; Gao G.; Wei W.; Wang F.; Han T.; Li T.; Zeng Q.; Zeng J.M.; Long Y.; Pan F.; Wang J.; He G.; Chen H.; Zhang F.; Chao Y.; Chunhua G.; Yao X.; Bai D.; Liu L.; Xu X.; Wang Y.; Liang X.; Zhang N.; Li X.; Zhang A.; Chen X.; Hu X.C.; Zhang H.; Wang R.X.; Tak P.S.; Ho S.W.; Jiang Q.X.; Ding X.; Hong L.; Miao L.; Feng Z.; Huang L.P.; Wu J.; Wang Y.; Guo J.; Zhang B.; Ma C.; Han Y.; Liu C.; Ding M.; Luan L.; Zheng J.; Lv S.; Jiang S.; Cao W.; Xue X.; Li J.; Liu G.; Wang J.; Wei X.; Zhang W.; Jiang Y.; Yao Z.; Gao L.; Li J.; Zhao W.; Jiang M.; Hao J.; Zhang J.; Song C.; Chen F.; Wang S.; Hu L.; Cao D.; Liu Y.; Wan J.; Wang X.; Shao H.; Zhang Z.; Cui X.; Liu J.; Zhao L.; Li X.; Fan L.; Zhang L.; Yu M.; Li B.; Li C.; Liu L.; Liu X.L.; Chen W.; Li Y.; Zhigang Z.; Yuchen W.; Mu C.; Zhu G.; Yang F.; Bo Q.; Li L.; Chen M.; Jiang J.H.; Yin H.; Pang X.; Gong Y.Y.; Yang S.; Yan X.; Zheng X.; Lei D.H.; Lei L.; Guo Y.; Liu L.; Yu J.; Sun W.; Bi A.P.; Li W.; Wu Y.; Li J.; Ni D.; Li X.; Liu Y.; Wu Z.; Song B.; Chen J.; Fei Q.; Xiaoyan Y.; Ran Q.; Xixi L.; Jiao X.; Ji H.; Zhiping S.; Hong M.; Jianhong M.; Hao Y.; Yin L.; Wang Y.; Hui C.; Ju W.; Xia X.; Huo Y.; Wang Y.; Chen L.; Yan Y.; Zhao Q.; Chen H.; Bao G.; Cao Y.; Hong L.; Zhang H.; Zhang Y.; Xu L.; Guixiang J.; Li Y.; Zhao H.M.; Huang X.; Dai Z.; Jian Y.; Zhang H.; Tian Z.; Cao Z.Q.; Li M.; Liu Y.; Ouyang F.; Ma F.; Jin W.; Ge L.; Wu S.F.; Li J.; Yuan W.; Chen T.; Shi G.; Chen Z.; Liu K.; Lin X.; Yuemen L.; Lijuan S.; Tian X.F.; Wang S.; Feng Z.X.; Liu X.Z.; Dong Y.; Zhang J.; Bocui N.; Jiang Z.X.; Yang J.; Wang G.X.; Zhao Y.; Wu X.; Yang Q.; Hu R.L.; Li X.Q.; Yu Z.J.; Yao Y.; Deng X.; Xiao Y.; Xie Y.; Yang Y.; Yang H.; Zhou Y.; Li Z.; Xiao M.; Yang Y.X.; Tian Y.; Gama L.M.S.; Hernandez J.S.; Cardenas Y.; Caicedo N.; Marin J.; Ochoa M.-E.; Gomez M.; Rojas-Suarez J.; Gonzalez J.; Reyes A.J.G.; Chapeta E.; Orozco E.; Filipovic-Grcic I.; Vukovic A.; Pecenkovic S.; Suput A.; Sustic A.; Zivanovic-Posilovic G.; Bozena A.; Udiljak N.; Milic M.; Radivojevic R.C.; Mihaljevic S.; Matas M.; Tonkovic D.; Culjak H.; Herceg I.; Pavlisa G.; Dobric M.; Beker T.; Adam V.N.; Goranovic T.; Markoulias C.; Mathaios M.; Mylordou M.; Achilleos E.; Kleanthous P.; Kotanidi V.; Foka M.; Charalabous I.; Alexandrou A.; Georgiou M.; Patsalos A.; Zepoy S.; Constantinou C.; Piza P.; Vymazal T.; Wiborg E.; Bruhn L.; Kaasby K.; Pedersen K.R.; Mikkelsen S.; Collet M.; Langvad A.; Andresen H.; Fischer S.; Kjaergard I.E.; Jepsen B.; Husted B.; Bestle M.; Kodal A.M.; Hansen T.C.B.; Pedersen A.S.B.; Thomsen T.D.; Hoegenhaven A.; From M.; Frandsen T.M.; Henning G.; Hansen A.; Jensen H.I.; Bliksted I.A.; Tamayo L.M.; Mogrovejo P.; Aguirre-Bermeo H.; Palaez C.; Tutillo D.R.M.; Hurtado C.V.; Garcia M.F.; Alvarez D.; Guerrero F.; Vasquez A.; Kutimets M.; Tamme K.; Maddison L.; Anvelt E.; Dlamini-Sserumaga L.; Lofqvist C.; Lusenius V.; Kauppi O.; Sakki J.-K.; Tervo-Heikkinen T.; Kesti U.; Merilainen M.; Karjula E.; Peltomaa M.; Palmu A.; Ahtiala M.; Valta M.A.; Mentec H.; Plantefeve G.; Besch G.; Pili-Floury S.; Ledochowski S.; Deserts M.D.; Giacardi C.; Daubin C.; Massard A.; Le Guen Y.; Blanc A.; Mandaroux S.; Gunther S.C.; Avogadro P.; Radavidson A.; Turc J.; Jochmans S.; Quintard H.; Boyer L.; Bruel C.; Philippart F.; Montravers P.; Atchade E.; Flessel N.; Chinardet B.; Soulisse L.; Pillard C.; Ngo D.; Bongiorno B.; Heitzler N.; Souppart V.; Gautheret N.; Timsit J.-F.; Essardy F.; Fartoukh M.; Mehay D.; Etourneau F.; Farkas J.-C.; Beuret P.; Preda G.; De Montmollin E.; Castelain V.; Jaschinski U.; Rothenfusser M.; Kindgen-Milles D.; Dimski T.; Fiedler C.; Heinicke T.; Meybohm P.; Schulze T.; Bota M.; Pelz S.; Odenthal T.; Christ M.; Bloos F.; Bosl K.; Chovas A.; Stehr S.; Simon P.; Grotheer S.; Schuppel S.; Schaller S.; Albrecht L.; Stubner A.; Graeser S.; Kolbe N.; Lausch M.; Diers A.; Guenther U.; Riessen R.; Roller M.; Osei I.P.; Kusi-Appiah A.-C.; Yakubu Y.H.; Guadi-Gosh B.; Dragoumanis C.; Christofis C.; Kazakos N.; Bastani S.; Martinos C.; Bekos V.; Papanikolaou M.; Papavasilopoulou T.; Efthymiou A.; Chantziara V.; Kyriakoudi A.; Kakaras N.; Diakaki C.; Flevari A.; Nikolaou C.; Katerina K.; Avramopoulou L.; Tsikritsaki K.; Gkiokas G.; Pantiora E.; Katsenos C.; Patsiou E.-C.; Alexandropoulou P.; Koutsodimitropoulos I.; Farmakis E.; Nestora K.; Chatzis M.; Kondili E.; Soundoulounaki S.; Mousafiri O.; Lepida D.; Liarmakopoulou A.; Koulouras V.; Papathanakos G.; Oikonomou M.; Ioannides P.; Papadopoulos D.; Staikos I.; Stafylaraki M.; Raitsiou B.; Mandis K.; Ravani I.; Kourelea S.; Efthimiou A.; Thoma G.; Bakas A.; Psarulis K.; Anisoglou S.; Papageorgiou E.; Michailidou E.; Tholioti T.; Lavrentieva A.; Sourla E.; Spyropoulou A.; Pantelas N.; Stalika K.M.M.; Georgakas I.; Karathanou A.; Tsikriki S.; Dimoula A.; Kanakaki S.; Vakalos A.; Pagioulas K.; Enamorado J.E.; Nardai G.; Hawchar F.; Blondal A.; Rygvadottir B.; Jonasdottir R.J.; Birgisdottir H.; Shah B.; Kaushik S.; Tripathy S.; Singh M.; Agarwal S.; Gupta M.; Ahmad M.; Mangal K.; Bhargava V.; Kushare V.; Jha S.; Bhakhtiani L.; Gupta A.; Kamal M.; Gurjar M.; Baronia A.; Kilapong B.; Susanti A.; Lestari M.I.; Zulkifli Z.; Baskoro W.; Zand F.; Zarei F.; Mahmoodpoor A.; Heidari F.; Jafaraghaee F.; O'Shea A.; O'Shea F.; O'Donnell C.; Craig G.; Fitzpatrick G.; Dunne L.; Hastings J.; Marsh B.; Cody C.; Campbell E.; Doyle D.; Pacturanan M.; Sheehan C.; Carey A.; Carter C.; Mulvey R.; Finn D.O.C.R.; Motherway C.; Walsh A.; Kehoe J.; Delossantos S.; Lalor J.; O'Nuallain S.; Behan H.; McPherson S.; Corcoran A.; Gordon P.; Rooney G.; Levy D.; Azencot M.; Gurevich V.; Lavy A.; Bendelari V.; Marconi R.; Barone A.; Gatti C.; Giampaoletti A.; Borgognoni C.; Ghioldi D.M.; Raimondo A.; Castiglione G.; Bruno A.V.; Rubulotta G.; Mo A.; Corso A.; Girianni S.; Bruni A.; Garofalo E.; Maggiore S.M.; Di Risio A.; Calamai I.; Spina R.; Spadaro S.; Volta C.A.; Cotoia A.; Mirabella L.; Maulicino L.; Abregal G.; Donvito M.; D'Ambrosio P.; Binda F.; Adamina I.; Galazzi A.; Negro A.; Vaschetto R.; Capuzzi F.; Boschetto M.; Stivanello L.; Bonaccorso L.; Megna C.; Cortegiani A.; Iozzo P.; Rizzo A.; Scire G.; Taibi M.R.; Tranello F.P.; Manzo A.; Traina L.; Pastore B.; Quaini A.; Giusti G.D.; Montaldi G.; Piergentili F.; Mancini F.; Casaioli S.; Uccelli F.; Guarracino F.; Onelli A.; Di Gravio V.; Cossu M.; Matrona O.; Rocco M.; Alampi D.; Dellafiore F.; Ranalli F.; Bossolasco M.; Brizio E.; Migliorino P.; Cortellazi P.; Rosati M.; D'Ambrosio F.; Quagliotto C.; Roman-Pognuz E.; Peratoner A.; De Rosa S.; Martin M.A.; De Sanctis F.; Ciorba P.; Fletcher K.; Toppin P.; Harding-Goldson H.; Taito S.; Shime N.; Yamamoto R.; Kanda F.; Hirao A.; Egi M.; Noguchi A.; Hashimoto S.; Aya U.; Sakuramoto H.; Ohuchi A.; Kataoka J.; Maruyama K.; Nakayama I.; Nishime Y.; Fujimoto K.; Takahashi K.; Tsujimoto M.; Shimizu M.; Waweru-Siika W.; Tole E.; Correia M.C.; Kim J.H.; Park S.; Kim K.C.; Baek J.; Bae J.-M.; Park S.Y.; Park T.S.; Lee H.B.; Park S.Y.; Park J.; Yeon-Joo L.; Young-Jae C.; Lee S.-M.; Jeon K.; Kim S.C.; Lee J.; Chee H.K.; Huh J.W.; Sim Y.S.; Kim J.; Chang Y.; Ahn J.-J.; Kang B.J.; Lee W.-Y.; Lee S.J.; Hadri B.; Baftiu N.; Krastins I.; Dolgusevs M.; Abillama F.F.; Stiban S.; Feghaly M.E.; Gharios E.; Merheb M.; Benlamin M.; Khaled A.; Belkhair W.A.; Tabib M.; Ashour F.; Elhadi A.; Tababa O.W.E.; Khaled T.; Alkhumsi S.I.R.; Alshrif A.I.; Aboufray A.A.; Alabuzidi A.; Triki A.R.; Elgammudi M.; Zahra H.B.; Soula E.; Al-Alawi M.M.S.; Ahmed H.; Ghula M.A.A.; Vosylius S.; Mouton L.; Rastegar T.; Sertznig C.; Martin G.; Thix C.; Theisen C.; Ferretti C.; Gils F.; Gallion M.; Zainudin A.; Bahrin L.K.K.; Deva S.R.; Rahim A.H.A.; Wahab S.; Mazlan M.Z.; Hassan W.N.W.; Ismail W.N.W.; Ali M.N.; Khoo T.M.; Samat N.M.; Tong J.M.G.; Adib N.A.N.; Nor M.B.M.; Ratnam S.; Ismail N.; Ratnam S.; Sulaiman S.R.; Foong K.W.; Alias A.; Hua N.P.; Maiyalagan S.; Maiyalagan S.; Zermeno J.M.; Blanco D.; Duran K.; Nava C.L.L.; Nandyelly S.J.R.; Sanchez-Hurtado L.A.; Tejeda-Huezo B.; Del Moral Armengol M.; Nava L.P.A.; Herrera J.G.; de Anda G.F.V.; Gallegos-Perez H.; Hernandez-Sanchez N.; Hernandez-Ponce L.; Gorordo-Delsol L.; Hernandez-Romero M.; Gomez S.; Molinar F.; Namendys-Silva S.A.; Romero-Gonzalez J.P.; Gonzalez D.; Landaverde A.; Sosa M.A.; Navarro B.; de Molina Serrano J.I.R.; Iburrigarro S.R.; Ibarra A.; Aguirre J.; Martinez-Gonzalez M.; Padilla N.R.C.; Pineda A.A.V.; Villafuerte M.V.E.; Herrera M.O.G.; Belii A.; Naranpurev M.; Baasanjav B.; Hachimi A.; Elkhayari M.; Abidi K.; Dendane T.; Subedi N.B.; Pathak S.D.; Gautam P.; Manandhar M.; Van Gulik L.; Van Den Brink M.; Van Vliet P.; Gerretsen B.; Van Den Berg L.; De Haan M.; Tuinstra B.; Kuijpers P.; Reijntjens J.; Vermeijden J.W.; Rinket M.; Vanroest M.; Reidinga A.; Loef B.; Dieperink W.; Onrust M.; Dormans T.; Bormans L.; Koopmans M.; Gerritsen R.T.; Van Den Elst A.; Evers M.; Oiting O.; Wilting R.; Ramaker B.; van der Kuil M.; Fijen J.-W.; Haas L.; De Lange D.; Haringman J.; Newby L.; Parke R.; Gilder E.; Hacking D.; Dagooc R.; Song R.; Waibel H.; Dawn F.; Rapley J.; Chadwick L.; Chapman C.; Crone P.; Albrett J.; Marko P.; Goodson J.; Browne T.; Whitticase R.; Davidson C.; Judd H.; Owens D.; Onyeka T.; Ugwu I.; Ilesanmi R.; Adejumo P.O.; Owojuyigbe A.; Adenekan A.; Uba S.; Chime C.; Jibrin D.; Sankey B.J.; Adekola O.; Olanipekun S.; Olanipekun S.; Adekola O.; Shosolcheva M.; Gievski V.; Kartalov A.; Naumovski F.; Kuzmanovska B.; Trposak A.; Bogoevska-Miteva Z.; Rosalia R.; Olsen B.F.; Sjobo B.; Jensen K.D.; Sykehus D.; Johansen B.F.; Straede E.; Johansen E.; Finnstrom I.J.; Toellefsen A.; Ostenjo H.; Bjorgen H.; Bratsberg B.; Kristoffersen E.; Skorstad E.M.; Hansen S.; Vullum S.; Lunde G.A.; Arntsen W.; Lund M.; Akselsen G.R.; Monstad K.R.; Stenset A.; Haugom H.; Monsen B.; Hogvall L.; Trudvang S.; Galaaen B.; Malmin S.K.; Andersen M.H.; Hargott R.F.; Andersen Y.; Steffenak E.; Nyhus M.; Meland B.; Hashmi M.; Rivas N.; Maidana E.; de Jesus Ortiz A.; Cabral D.M.B.; Simi M.; Aponte C.; Rivas J.C.; Gill S.; Garcia A.; Alvarenga G.; Cespedes L.; Perez H.; Moreira M.L.; Canete F.; Gonzalez R.; Monges N.; Garcia A.; Coman M.; Pederzani M.; Franco N.; Aganon F.; Martinez R.; Noblezada-Uy D.; Ellazar C.G.; Cerezo F.D.; Hernandez A.M.; Palo J.E.; Aperocho C.A.J.; Isanan M.; Tubacka M.; Jasiewicz P.; Czuczwar M.; Borys M.; Gutysz-Wojnicka A.; Glinka L.; Gawda R.; Mikaszewska-Sokolewicz M.; Bilawicz J.; Cabrita P.; Vieira J.; Figueiredo M.F.; Pinheiro C.M.; Antunes N.; Pedro L.; Ferreira F.; Parente I.; Varela M.; Fernandes F.; Martins C.; Viveiros A.; Cavaco R.; Rita C.S.; Dias S.; Feranandes A.M.; Silva P.; Nunes C.; Cabral J.; Sousa B.; Pires F.; Ferreira H.; Santos J.; Pinto V.M.V.; Bispo B.M.; Ferreira A.; Molinos E.; Lafuente E.; Gregorio R.; Costa H.; Lima A.; Ferreira S.; Seromenho V.; Luis E.; Valerio I.; Cesar H.; Tavares A.; Alsheikhly A.S.; Mahmood S.; Guran C.T.; Moise A.; Filipescu D.C.; Luchian M.; Tomescu D.; Popescu M.; Scutariu M.A.; Petrisor C.; Hagau N.; Grigoras I.; Patrichi T.; Gusarev V.; Pivkina A.; Kulakov V.; Ignatenko O.; Kovaleva J.; Zhivotneva T.; Zhedaeva M.; Matiushkov N.; Ershova O.; Egorova N.; Khoronenko V.; Baskakov D.; Sergeev D.; Piradov M.; Grishina L.; Magomedov M.; Zuev E.; Gorokhovatsky U.; Leonova A.; Fadeeva L.; Belskiy V.; Galishevskiy D.; Zubareva N.; Tribulev M.; Zueva O.; Kiselev A.; Kamenshchikov N.; Tokareva E.; Petrushin M.; Starchenko I.; Twagirumugabe T.; Nshimyumuremyi I.; Muhizi J.; Buregeya E.; Nzarora J.; Assiri A.; Ebaid M.S.; Almekhlafi G.; Mandourah Y.; Velickovic J.; Velickovic D.; Jovanovic B.; Hadzibegovic A.; Stefanovic B.; Misic V.; Bumbasirevic V.; Rajkovic M.; Stojanovic M.; Gavrilovic S.; Stanojevic M.; Martonova A.; Yaghi A.; Turcan A.; Firment P.; Slobodianiuk G.; Rabarova D.; Lancaricova D.; Vlaovic J.; Groznik M.; Lukic M.; Perme J.; Sostaric M.; Umek N.; Mirkovic T.; Dolenc S.; Knafelj R.; Fister M.; Zorko N.; Markota A.; Yeni N.P.; Jali P.; Schmollgruber S.; Syed M.R.; Parag N.; Wise R.; Galiana M.; Navarro J.A.; De Pablo A.M.; Albert P.; Martinez P.; Mendiara Y.; Garcia B.; Llinas A.A.; Riveiro M.; Gallart E.; Riera A.; Sanz M.; Salo S.; Lajara M.A.G.; Nieto M.V.; Garcia R.; Pena J.M.G.; Gorgolas M.C.; Isasi M.A.; Sierra R.; Gordo F.; Conejo I.; Salva-Costa V.; Garzon-Tovar C.; Lospitao S.; Gonzalez R.; Gutierrez P.; Girona M.; Adamuz J.; Olivares P.G.; de Ceballos J.P.G.; Tirado C.; De Wit I.; Polo A.B.C.; del Mar Diaz Salcedo M.; Ripolles-Melchor J.; Martinez-Hurtado E.; Alvarez J.D.; Arcas M.L.B.; Gonzalez J.I.T.; de la Ventana A.B.S.; Calleja P.L.-A.; Alvarez R.G.; Zamora P.S.; Guerrero A.O.; Cosano R.; Perez-Vacas J.; Campos-Perez M.; Barreiro E.M.; Sanchez L.C.; Diaz M.G.; Jimenez R.; Del Rio Cabajo L.; Muriel D.S.; Alonso H.F.; Fernandez A.W.; Pinan I.S.; Albaiceta G.M.; Fernandez M.C.I.; Abos F.J.S.; Monedero P.; Chueca R.M.; Aguirre L.G.; Manosa S.C.; Luque C.P.; Calpe N.; Losilla M.R.; Fores M.T.; Farre O.; Fernandez O.; del Rosario Villar Redondo M.; Arteta Arteta D.S.; Sanchez M.A.H.; Espinosa C.P.; Reyes L.M.; Domenech L.C.; Guillen C.V.; Alvarez J.T.; del Cotillo M.; Barrueco-Francioni J.E.; Conde B.B.; Blanco M.P.S.; Blasco M.L.; Clement A.I.; Hurtado C.; Sanz L.C.; Perez-Torres D.; Prol-Silva E.; Pereira J.; Gonzalez I.A.; Cano A.E.; Nunez C.R.; Fernadez I.L.; Fernandez A.A.M.; Del Bosque Diez R.; Hilario B.; Zalba-Etayo B.; Pascual-Bielsa A.; Panka B.; Banwarie P.; Nahar D.; van Axel A.; Boedjawan N.N.; Jansson E.B.; Malvemyr A.-S.; Johansson L.; Sandberg U.; Tingsvik C.; Mattsson G.; Lof G.; Spangfors M.; Ringdal M.; Geijer S.; Orvelius L.; Hylen M.; Lagerhall C.; Joelsson-Alm E.; Akerman E.; Hellkvist V.H.; Mickelsson U.; Akerman E.; Wahlbom E.; Larsson I.-M.; Wallin E.; Boroli F.; Ory S.; Jong M.L.; Dullenkopf A.; Lang M.; Fleury Y.; Maus M.; Ben-Hamouda N.; Fishman A.; Hsu M.Y.; Chang S.C.; Trongtratul K.; Sawawiboon C.; Morakul S.; Khwannimit B.; Merritt-Charles L.; Singh K.; Ventour D.; Figaro-Barclay D.; Sankar-Maharaj S.; Mebazaa M.S.; Kamoun S.; Elatrous S.; Besbes L.; Abroug F.; Naija W.; Elhechmi Y.Z.; Sellami W.; Hajjej Z.; Merhabene T.; Talik I.; Kuscu O.O.; Dilek O.; Zerman A.; Dal H.C.; Turan S.; Aydemir S.; Yilmaz H.; Calili D.K.; Izdes S.; Cengiz M.; Gumus A.; Tasdemir B.; Kagnici A.; Ay M.; Ay S.A.; Caliskan G.; Akbas T.; Balbay A.O.; Efe S.; Inal V.; Elay G.; Karabacak P.; Ozserezli B.; Senturk E.; Demirkiran O.; Bozbay S.; Dikmen Y.; Erdogan E.; Akker M.; Peker N.; Ozgultekin A.; Serin S.O.; Turan C.; Karaoren G.; Goksu S.; Karakurt S.; Arikan H.; Gul F.; Cinel I.; Kara I.; Undar H.N.; Bayraktar Y.S.; Celik J.B.; Tokur M.E.; Aydin D.T.; Yildiz I.; Ozcan B.; Erdivanli B.; Erdivanli B.; Ozcan B.; Eroglu A.; Akdag D.; Unlu N.; Fielding M.; Dungca A.; Ali A.; Thankamma B.; Reyes P.E.; John S.; Rajendran A.; Ahmad F.K.E.; Smiley K.A.; Hojden S.; Miller M.T.; Das Sasidharan Nair V.; Antonio M.G.S.; Qawasmeh K.A.; Shawish S.A.; Twiggs H.; Rosado I.; Babych V.; Morren F.; Young C.; Vaughan-Jones N.; Harris S.; Burns K.; Georgiev C.; Shayamano R.; Kerslake I.; Creber P.; Vochin A.; O'Brien C.; Caddell P.; Hagan S.; Hughes M.; Torlinski T.; Sherwin J.; Kannan S.; Markham A.; Lebon R.; Cupitt J.; Cranshaw J.; White N.; Marriott V.; Milner W.; Groba C.B.; Azoia J.; Polgarova P.; George S.; Kapoor R.; Lynch C.; Fox N.; Cranmer K.; Fox N.; Llewellym T.; Matthews K.; Maltby L.; Ibao J.; Boulton K.; Jarman R.; Baxter K.; Raj A.S.; Moghal A.; White J.; Barrowcliffe S.; Pulletz M.; Ganeshalingam V.; Baruah R.; Baker H.; Woods J.; Ei P.P.; Ogbeide V.; Hayden P.; Matthews K.; Hughes J.; Balasubramanian M.; Salberg A.; Saha R.; Holmquist D.; Young C.; Derbyshire C.; Smith N.; Stones E.; Ademokun J.; Popescu M.; Legorburo M.S.; North S.; Brett C.; Jaundoo H.; Craig J.; Whiteley S.; Howcroft C.; Wilby L.; Delve P.; Shaw D.; Williams K.; Welters I.D.; McMullen J.; Brett S.; Flores L.; Trueman-Dawkins T.; Templeton M.; Adams J.; Smith C.; Prowle J.; Byers H.; McDonnell A.; Rose B.O.; Reece-Anthony R.; Mendes L.; Vizcaychipi M.; Bull R.; Lacaden G.; Santiago E.; Delgado C.C.; Farnell-Ward S.; Thorpe E.; Somerville J.; Williams A.; Cummings D.; Derrick H.; Brumwell S.; Randell C.; McCann N.; Aves E.; Berry G.; Szakmany T.; Gunter U.; Pulak P.; Sarkar N.; Wright K.; Gomes V.; Jones J.; Palfrey R.; Camsooksai J.; Lewis A.; Eneas A.; Tridente A.; Barr L.; Jovaisa T.; Thomas B.; Parkin E.; Horner D.; Frey C.; Bench S.; Baumber R.; Broadhurst P.; Jackson M.; Williams L.; Clark M.; Paddle J.; Bean S.; Buckley S.; Palfreeman C.; Liu S.; Allison N.; Attwood B.; Parsons P.; Houghton V.; Turner S.J.; Higgins D.; Bielskute E.; Horrigan N.; Jacob R.; Habgood K.; Zaki A.; Collins A.; Lord J.; Ramiro C.; Kubisz-Pudelko A.; Kotze M.; Williams H.; Iovenko I.; Tsarev A.; Zgrzheblovska L.; Briva A.; Mendez G.; Napolitano L.; Teig M.; Lee J.; Rodriguez G.E.; Ben-Jacob T.; Potestio C.; Eng T.; Mahanes D.; Khanna A.; Duggal A.;

Weaning from mechanical ventilation in intensive care units across 50 countries (WEAN SAFE): a multicentre, prospective, observational cohort study

International audienceBackground: Current management practices and outcomes in weaning from invasive mechanical ventilation are poorly understood. We aimed to describe the epidemiology, management, timings, risk for failure, and outcomes of weaning in patients requiring at least 2 days of invasive mechanical ventilation. Methods: WEAN SAFE was an international, multicentre, prospective, observational cohort study done in 481 intensive care units in 50 countries. Eligible participants were older than 16 years, admitted to a participating intensive care unit, and receiving mechanical ventilation for 2 calendar days or longer. We defined weaning initiation as the first attempt to separate a patient from the ventilator, successful weaning as no reintubation or death within 7 days of extubation, and weaning eligibility criteria based on positive end-expiratory pressure, fractional concentration of oxygen in inspired air, and vasopressors. The primary outcome was the proportion of patients successfully weaned at 90 days. Key secondary outcomes included weaning duration, timing of weaning events, factors associated with weaning delay and weaning failure, and hospital outcomes. This study is registered with ClinicalTrials.gov, NCT03255109. Findings: Between Oct 4, 2017, and June 25, 2018, 10 232 patients were screened for eligibility, of whom 5869 were enrolled. 4523 (77·1%) patients underwent at least one separation attempt and 3817 (65·0%) patients were successfully weaned from ventilation at day 90. 237 (4·0%) patients were transferred before any separation attempt, 153 (2·6%) were transferred after at least one separation attempt and not successfully weaned, and 1662 (28·3%) died while invasively ventilated. The median time from fulfilling weaning eligibility criteria to first separation attempt was 1 day (IQR 0–4), and 1013 (22·4%) patients had a delay in initiating first separation of 5 or more days. Of the 4523 (77·1%) patients with separation attempts, 2927 (64·7%) had a short wean (≤1 day), 457 (10·1%) had intermediate weaning (2–6 days), 433 (9·6%) required prolonged weaning (≥7 days), and 706 (15·6%) had weaning failure. Higher sedation scores were independently associated with delayed initiation of weaning. Delayed initiation of weaning and higher sedation scores were independently associated with weaning failure. 1742 (31·8%) of 5479 patients died in the intensive care unit and 2095 (38·3%) of 5465 patients died in hospital. Interpretation: In critically ill patients receiving at least 2 days of invasive mechanical ventilation, only 65% were weaned at 90 days. A better understanding of factors that delay the weaning process, such as delays in weaning initiation or excessive sedation levels, might improve weaning success rates. Funding: European Society of Intensive Care Medicine, European Respiratory Society

Weaning from mechanical ventilation in intensive care units across 50 countries (WEAN SAFE): a multicentre, prospective, observational cohort study

Background Current management practices and outcomes in weaning from invasive mechanical ventilation are poorly understood. We aimed to describe the epidemiology, management, timings, risk for failure, and outcomes of weaning in patients requiring at least 2 days of invasive mechanical ventilation. Methods WEAN SAFE was an international, multicentre, prospective, observational cohort study done in 481 intensive care units in 50 countries. Eligible participants were older than 16 years, admitted to a participating intensive care unit, and receiving mechanical ventilation for 2 calendar days or longer. We defined weaning initiation as the first attempt to separate a patient from the ventilator, successful weaning as no reintubation or death within 7 days of extubation, and weaning eligibility criteria based on positive end-expiratory pressure, fractional concentration of oxygen in inspired air, and vasopressors. The primary outcome was the proportion of patients successfully weaned at 90 days. Key secondary outcomes included weaning duration, timing of weaning events, factors associated with weaning delay and weaning failure, and hospital outcomes. This study is registered with ClinicalTrials.gov, NCT03255109. Findings Between Oct 4, 2017, and June 25, 2018, 10 232 patients were screened for eligibility, of whom 5869 were enrolled. 4523 (77·1%) patients underwent at least one separation attempt and 3817 (65·0%) patients were successfully weaned from ventilation at day 90. 237 (4·0%) patients were transferred before any separation attempt, 153 (2·6%) were transferred after at least one separation attempt and not successfully weaned, and 1662 (28·3%) died while invasively ventilated. The median time from fulfilling weaning eligibility criteria to first separation attempt was 1 day (IQR 0–4), and 1013 (22·4%) patients had a delay in initiating first separation of 5 or more days. Of the 4523 (77·1%) patients with separation attempts, 2927 (64·7%) had a short wean (≤1 day), 457 (10·1%) had intermediate weaning (2–6 days), 433 (9·6%) required prolonged weaning (≥7 days), and 706 (15·6%) had weaning failure. Higher sedation scores were independently associated with delayed initiation of weaning. Delayed initiation of weaning and higher sedation scores were independently associated with weaning failure. 1742 (31·8%) of 5479 patients died in the intensive care unit and 2095 (38·3%) of 5465 patients died in hospital. Interpretation In critically ill patients receiving at least 2 days of invasive mechanical ventilation, only 65% were weaned at 90 days. A better understanding of factors that delay the weaning process, such as delays in weaning initiation or excessive sedation levels, might improve weaning success rates