Acknowledgement
The members of the Korean Intensive Care Study Group are as follows: Jin-Won Huh, Sang-Min Lee, Chi Ryang Chung, Jongmin Lee, Jung Soo Kim, Sung Yoon Lim, Ae-Rin Baek, Moon Seong Baek, Ho Cheol Kim, Eun Young Choi, Chul Park, TaeOk Kim, Do Sik Moon, Song-I Lee, Jae Young Moon, Sun Jung Kwon, Gil Myeong Seong, and Won Jai Jung. The final manuscript was written with the assistance of a professional editing service.
References
- Morley JE, Vellas B, van Kan GA, Anker SD, Bauer JM, Bernabei R, et al. Frailty consensus: a call to action. J Am Med Dir Assoc 2013;14:392-7. https://doi.org/10.1016/j.jamda.2013.03.022
- Muscedere J, Waters B, Varambally A, Bagshaw SM, Boyd JG, Maslove D, et al. The impact of frailty on intensive care unit outcomes: a systematic review and metaanalysis. Intensive Care Med 2017;43:1105-22. https://doi.org/10.1007/s00134-017-4867-0
- Herridge MS, Azoulay E. Outcomes after critical illness. N Engl J Med 2023;388:913-24. https://doi.org/10.1056/NEJMra2104669
- Paul JA, Whittington RA, Baldwin MR. Critical illness and the frailty syndrome: mechanisms and potential therapeutic targets. Anesth Analg 2020;130:1545-55. https://doi.org/10.1213/ANE.0000000000004792
- Brummel NE, Bell SP, Girard TD, Pandharipande PP, Jackson JC, Morandi A, et al. Frailty and subsequent disability and mortality among patients with critical illness. Am J Respir Crit Care Med 2017;196:64-72. https://doi.org/10.1164/rccm.201605-0939OC
- Darvall JN, Bellomo R, Bailey M, Young PJ, Rockwood K, Pilcher D. Impact of frailty on persistent critical illness: a population-based cohort study. Intensive Care Med 2022;48:343-51. https://doi.org/10.1007/s00134-022-06617-0
- Cesari M, Prince M, Thiyagarajan JA, De Carvalho IA, Bernabei R, Chan P, et al. Frailty: an emerging public health priority. J Am Med Dir Assoc 2016;17:188-92. https://doi.org/10.1016/j.jamda.2015.12.016
- Howlett SE, Rutenberg AD, Rockwood K. The degree of frailty as a translational measure of health in aging. Nat Aging 2021;1:651-65. https://doi.org/10.1038/s43587-021-00099-3
- Rockwood K, Theou O. Using the clinical frailty scale in allocating scarce health care resources. Can Geriatr J 2020;23:210-5. https://doi.org/10.5770/cgj.23.413
- Surkan M, Rajabali N, Bagshaw SM, Wang X, Rolfson D. Interrater reliability of the clinical frailty scale by geriatrician and intensivist in patients admitted to the intensive care unit. Can Geriatr J 2020;23:235-41. https://doi.org/10.5770/cgj.23.398
- Shears M, Takaoka A, Rochwerg B, Bagshaw SM, Johnstone J, Holding A, et al. Assessing frailty in the intensive care unit: a reliability and validity study. J Crit Care 2018;45:197-203. https://doi.org/10.1016/j.jcrc.2018.02.004
- Darvall JN, Greentree K, Braat MS, Story DA, Lim WK. Contributors to frailty in critical illness: multi-dimensional analysis of the clinical frailty scale. J Crit Care 2019;52: 193-9. https://doi.org/10.1016/j.jcrc.2019.04.032
- Darvall JN, Bellomo R, Paul E, Bailey M, Young PJ, Reid A, et al. Routine frailty screening in critical illness: a population-based cohort study in Australia and New Zealand. Chest 2021;160:1292-303. https://doi.org/10.1016/j.chest.2021.05.049
- Bagshaw M, Majumdar SR, Rolfson DB, Ibrahim Q, McDermid RC, Stelfox HT. A prospective multicenter cohort study of frailty in younger critically ill patients. Crit Care 2016;20:175. https://doi.org/10.1186/s13054-016-1338-x
- Bagshaw SM, Stelfox HT, McDermid RC, Rolfson DB, Tsuyuki RT, Baig N, et al. Association between frailty and short- and long-term outcomes among critically ill patients: a multicentre prospective cohort study. CMAJ 2014;186:E95-102. https://doi.org/10.1503/cmaj.130639
- Wu C, Chen X, Cai Y, Xia J, Zhou X, Xu S, et al. Risk factors associated with acute respiratory distress syndrome and death in patients with coronavirus disease 2019 pneumonia in Wuhan, China. JAMA Intern Med 2020;180:934-43. https://doi.org/10.1001/jamainternmed.2020.0994
- Richards-Belle A, Orzechowska I, Gould DW, Thomas K, Doidge JC, Mouncey PR, et al. COVID-19 in critical care: epidemiology of the first epidemic wave across England, Wales and Northern Ireland. Intensive Care Med 2020;46:2035-47. https://doi.org/10.1007/s00134-020-06267-0
- Petrilli CM, Jones SA, Yang J, Rajagopalan H, O'Donnell L, Chernyak Y, et al. Factors associated with hospital admission and critical illness among 5279 people with coronavirus disease 2019 in New York City: prospective cohort study. BMJ 2020;369:m1966. https://doi.org/10.1136/bmj.m1966
- Cummings MJ, Baldwin MR, Abrams D, Jacobson SD, Meyer BJ, Balough EM, et al. Epidemiology, clinical course, and outcomes of critically ill adults with COVID-19 in New York City: a prospective cohort study. Lancet 2020;395:1763-70. https://doi.org/10.1016/S0140-6736(20)31189-2
- Maslove DM, Sibley S, Boyd JG, Goligher EC, Munshi L, Bogoch II, et al. Complications of critical COVID-19: diagnostic and therapeutic considerations for the mechanically ventilated patient. Chest 2022;161:989-98. https://doi.org/10.1016/j.chest.2021.10.011
- Grasselli G, Zangrillo A, Zanella A, Antonelli M, Cabrini L, Castelli A, et al. Baseline characteristics and outcomes of 1591 patients infected with SARS-CoV-2 admitted to ICUs of the Lombardy region, Italy. JAMA 2020;323:1574-81. https://doi.org/10.1001/jama.2020.5394
- Na YS, Kim JH, Baek MS, Kim WY, Baek AR, Lee BY, et al. In-hospital mortality prediction using frailty scale and severity score in elderly patients with severe COVID-19. Acute Crit Care 2022;37:303-11. https://doi.org/10.4266/acc.2022.00017
- Zampieri FG, Iwashyna TJ, Viglianti EM, Taniguchi LU, Viana WN, Costa R, et al. Association of frailty with shortterm outcomes, organ support and resource use in critically ill patients. Intensive Care Med 2018;44:1512-20. https://doi.org/10.1007/s00134-018-5342-2
- Zhang XM, Jiao J, Cao J, Huo XP, Zhu C, Wu XJ, et al. Frailty as a predictor of mortality among patients with COVID-19: a systematic review and meta-analysis. BMC Geriatr 2021;21:186. https://doi.org/10.1186/s12877-021-02138-5
- Hewitt J, Carter B, Vilches-Moraga A, Quinn TJ, Braude P, Verduri A, et al. The effect of frailty on survival in patients with COVID-19 (COPE): a multicentre, European, observational cohort study. Lancet Public Health 2020;5:e444-51. https://doi.org/10.1016/S2468-2667(20)30146-8
- Sablerolles RS, Lafeber M, van Kempen JA, van de Loo BP, Boersma E, Rietdijk WJ, et al. Association between clinical frailty scale score and hospital mortality in adult patients with COVID-19 (COMET): an international, multicentre, retrospective, observational cohort study. Lancet Healthy Longev 2021;2:e163-70. https://doi.org/10.1016/S2666-7568(21)00006-4
- Bagshaw SM, Stelfox HT, Johnson JA, McDermid RC, Rolfson DB, Tsuyuki RT, et al. Long-term association between frailty and health-related quality of life among survivors of critical illness: a prospective multicenter cohort study. Crit Care Med 2015;43:973-82. https://doi.org/10.1097/CCM.0000000000000860
- Geense W, Zegers M, Dieperink P, Vermeulen H, van der Hoeven J, van den Boogaard M. Changes in frailty among ICU survivors and associated factors: results of a oneyear prospective cohort study using the Dutch clinical frailty scale. J Crit Care 2020;55:184-93. https://doi.org/10.1016/j.jcrc.2019.10.016
- Taniguchi LU, Avelino-Silva TJ, Dias MB, Jacob-Filho W, Aliberti MJ. Association of frailty, organ support, and long-term survival in critically ill patients with COVID-19. Crit Care Explor 2022;4:e0712. https://doi.org/10.1097/CCE.0000000000000712
- Hanlon P, Nicholl BI, Jani BD, Lee D, McQueenie R, Mair FS. Frailty and pre-frailty in middle-aged and older adults and its association with multimorbidity and mortality: a prospective analysis of 493 737 UK Biobank participants. Lancet Public Health 2018;3:e323-32. https://doi.org/10.1016/S2468-2667(18)30091-4
- Feng Z, Lugtenberg M, Franse C, Fang X, Hu S, Jin C, et al. Risk factors and protective factors associated with incident or increase of frailty among community-dwelling older adults: a systematic review of longitudinal studies. PLoS One 2017;12:e0178383. https://doi.org/10.1371/journal.pone.0178383
- Ferrucci L, Fabbri E. Inflammageing: chronic inflammation in ageing, cardiovascular disease, and frailty. Nat Rev Cardiol 2018;15:505-22. https://doi.org/10.1038/s41569-018-0064-2
- RECOVERY Collaborative Group; Horby P, Lim WS, Emberson JR, Mafham M, Bell JL, et al. Dexamethasone in hospitalized patients with COVID-19. N Engl J Med 2021; 384:693-704. https://doi.org/10.1056/NEJMoa2021436
- Liu D, Ahmet A, Ward L, Krishnamoorthy P, Mandelcorn ED, Leigh R, et al. A practical guide to the monitoring and management of the complications of systemic corticosteroid therapy. Allergy Asthma Clin Immunol 2013;9:30. https://doi.org/10.1186/1710-1492-9-30
- Williams DM. Clinical pharmacology of corticosteroids. Respir Care 2018;63:655-70. https://doi.org/10.4187/respcare.06314
- Yang T, Li Z, Jiang L, Xi X. Corticosteroid use and intensive care unit-acquired weakness: a systematic review and meta-analysis. Crit Care 2018;22:187. https://doi.org/10.1186/s13054-018-2111-0
- Dent E, Martin FC, Bergman H, Woo J, Romero-Ortuno R, Walston JD. Management of frailty: opportunities, challenges, and future directions. Lancet 2019;394:1376-86. https://doi.org/10.1016/S0140-6736(19)31785-4
- Remelli F, Scaramuzzo G, Capuzzo M, Maietti E, Berselli A, Denti M, et al. Frailty trajectories in ICU survivors: a comparison between the clinical frailty scale and the Tilburg frailty Indicator and association with 1 year mortality. J Crit Care 2023;78:154398. https://doi.org/10.1016/j.jcrc.2023.154398