Andersen, L. W., Holmberg, M. J., Berg, K. M., Donnino, M. W. & Granfeldt, A. In-hospital cardiac arrest: A review. Jama 321(12), 1200–1210 (2019).
Benjamin, E. J. et al. Heart disease and stroke statistics-2019 update: A report from the american heart association. Circulation 139(10), e56–e528 (2019).
Holmberg, M. J. et al. Annual incidence of adult and pediatric in-hospital cardiac arrest in the United States. Circ. Cardiovasc. Qual Outcomes 12(7), e005580 (2019).
Dyson, K. et al. International variation in survival after out-of-hospital cardiac arrest: A validation study of the Utstein template. Resuscitation 138, 168–181 (2019).
Nolan, J. P. et al. European resuscitation council and european society of intensive care medicine guidelines 2021: Post-resuscitation care. Intensive Care Med. 47(4), 369–421 (2021).
Li, C., Sun, T. & Jiang, C. Recent advances in nanomedicines for the treatment of ischemic stroke. Acta Pharm. Sin. B 11(7), 1767–1788 (2021).
Bouglé, A. et al. Determinants and significance of cerebral oximetry after cardiac arrest: A prospective cohort study. Resuscitation 99, 1–6 (2016).
Muka, T. et al. A 24-step guide on how to design, conduct, and successfully publish a systematic review and meta-analysis in medical research. Eur. J. Epidemiol. 35(1), 49–60 (2020).
Liberati, A. et al. The PRISMA statement for reporting systematic reviews and meta-analyses of studies that evaluate healthcare interventions: Explanation and elaboration. Bmj 339, b2700 (2009).
Lepard, J. R. et al. Differences in outcomes of mandatory motorcycle helmet legislation by country income level: A systematic review and meta-analysis. PLoS Med. 18(9), e1003795 (2021).
Guyatt, G. H., Oxman, A. D., Schünemann, H. J., Tugwell, P. & Knottnerus, A. GRADE guidelines: A new series of articles in the journal of clinical epidemiology. J. Clin. Epidemiol. 64(4), 380–382 (2011).
Atkins, D. et al. Grading quality of evidence and strength of recommendations. Bmj 328(7454), 1490 (2004).
Hayden, J. A., van der Windt, D. A., Cartwright, J. L., Côté, P. & Bombardier, C. Assessing bias in studies of prognostic factors. Ann. Intern. Med. 158(4), 280–286 (2013).
Albaeni, A. et al. The association between post resuscitation hemoglobin level and survival with good neurological outcome following out of hospital cardiac arrest. Resuscitation 99, 7–12 (2016).
Zama Cavicchi, F. et al. Low hemoglobin and venous saturation levels are associated with poor neurological outcomes after cardiac arrest. Resuscitation 153, 202–208 (2020).
Cho, Y. M. et al. Blood ammonia is a predictive biomarker of neurologic outcome in cardiac arrest patients treated with therapeutic hypothermia. Am. J. Emerg. Med. 30(8), 1395–1401 (2012).
Wan, X., Wang, W., Liu, J. & Tong, T. Estimating the sample mean and standard deviation from the sample size, median, range and/or interquartile range. BMC Med. Res. Methodol. 14, 135 (2014).
Higgins, B. T., Barlow, D. R., Heagerty, N. E. & Lin, T. J. Anterior vs. posterior approach for total hip arthroplasty, a systematic review and meta-analysis. J. Arthroplasty 30(3), 419–434 (2015).
Huedo-Medina, T. B., Sanchez-Meca, J., Marin-Martinez, F. & Botella, J. Assessing heterogeneity in meta-analysis: Q statistic or I-2 index?. Psychol. Methods 11(2), 193–206 (2006).
SOS-Kanto Study Group. Relationship between the hemoglobin level at hospital arrival and post-cardiac arrest neurologic outcome. Am. J. Emerg. Med. 30(5), 770–774 (2012).
Ameloot, K. et al. Low hemoglobin levels are associated with lower cerebral saturations and poor outcome after cardiac arrest. Resuscitation 96, 280–286 (2015).
Wormsbecker, A., Sekhon, M. S., Griesdale, D. E., Wiskar, K. & Rush, B. The association between anemia and neurological outcome in hypoxic ischemic brain injury after cardiac arrest. Resuscitation 112, 11–16 (2017).
Wang, C. H. et al. Association between hemoglobin levels and clinical outcomes in adult patients after in-hospital cardiac arrest: A retrospective cohort study. Intern. Emerg. Med. 11(5), 727–736 (2016).
Oh, S. J. et al. Age is related to neurological outcome in patients with out-of-hospital cardiac arrest (OHCA) receiving therapeutic hypothermia (TH). Am. J. Emerg. Med. 36(2), 243–247 (2018).
Kim, D. et al. Hemoglobin concentration is associated with neurologic outcome after cardiac arrest in patients treated with targeted temperature management. Clin. Exp. Emerg. Med. 5(3), 150–155 (2018).
Hayashida, K. et al. Estimated cerebral oxyhemoglobin as a useful indicator of neuroprotection in patients with post-cardiac arrest syndrome: A prospective, multicenter observational study. Crit. Care 18(4), 500 (2014).
Lelubre, C., Bouzat, P., Crippa, I. A. & Taccone, F. S. Anemia management after acute brain injury. Crit. Care 20(1), 152 (2016).
Oddo, M. et al. Anemia and brain oxygen after severe traumatic brain injury. Intensive Care Med. 38(9), 1497–1504 (2012).
Ayling, O. G. S., Ibrahim, G. M., Alotaibi, N. M., Gooderham, P. A. & Macdonald, R. L. Anemia after aneurysmal subarachnoid hemorrhage is associated with poor outcome and death. Stroke 49(8), 1859–1865 (2018).
Tang, X. et al. Iron-deficiency and estrogen are associated with ischemic stroke by up-regulating transferrin to induce hypercoagulability. Circ. Res. 127(5), 651–663 (2020).
Zeng, Y. J. et al. Anemia on admission increases the risk of mortality at 6 months and 1 year in hemorrhagic stroke patients in China. J. Stroke Cerebrovasc. Dis. 23(6), 1500–1505 (2014).
Takagi, H., Hari, Y., Kawai, N. & Ando, T. Meta-analysis of impact of anemia and hemoglobin level on survival after transcatheter aortic valve implantation. Am. J. Cardiol. 123(2), 306–314 (2019).
Luo, H. C., Fu, Y. Q., You, C. Y., Liu, C. J. & Xu, F. Comparison of admission serum albumin and hemoglobin as predictors of outcome in children with moderate to severe traumatic brain injury: A retrospective study. Medicine 98(44), e17806 (2019).
Acosta, J. N. et al. Admission hemoglobin levels are associated with functional outcome in spontaneous intracerebral hemorrhage. Crit. Care Med. 49(5), 828–837 (2021).
Oh, T. R., Song, S. H., Choi, H. S., Kim, C. S., Han, S. H., Kang, K. P., Kwon, Y. J., Kim, S. W., Ma, S. K., Bae, E. H., The association between serum hemoglobin and renal prognosis of IgA nephropathy. J. Clin. Med., 10(2), (2021).
Leonardi, S. et al. Prognostic implications of declining hemoglobin content in patients hospitalized with acute coronary syndromes. J. Am. Coll. Cardiol. 77(4), 375–388 (2021).
Toft-Petersen, A. P., Torp-Pedersen, C., Weinreich, U. M. & Rasmussen, B. S. Association between hemoglobin and prognosis in patients admitted to hospital for COPD. Int. J. Chron. Obstruct. Pulmon Dis. 11, 2813–2820 (2016).
Litofsky, N. S. et al. Anaemia worsens early functional outcome after traumatic brain injury: A preliminary study. Brain Inj. 32(3), 342–349 (2018).
Mori, K. et al. Prognostic value of hemoglobin in metastatic hormone-sensitive prostate cancer: A systematic review and meta-analysis. Clin. Genitourin. Cancer 18(4), e402–e409 (2020).
Barlas, R. S. et al. Impact of hemoglobin levels and anemia on mortality in acute stroke: Analysis of UK regional registry data, systematic review, and meta-analysis. J. Am. Heart Assoc. 5(8), e003019 (2018).
Song, H. Y., Wei, C. M., Zhou, W. X., Hu, H. F. & Wan, Q. J. Association between admission hemoglobin level and prognosis in patients with type 2 diabetes mellitus. World J. Diabetes 12(11), 1917–1927 (2021).
Iiya, M. et al. Combination of hemoglobin and low-flow duration can predict neurological outcome in the initial phase of out-of-hospital cardiac arrest. J. Crit. Care 47, 269–273 (2018).
Tran, L. N. et al. The association between post-cardiac arrest cerebral oxygenation and survival with favorable neurological outcomes: A multicenter study. Resuscitation 154, 85–92 (2020).
Scheel, M. et al. The prognostic value of gray-white-matter ratio in cardiac arrest patients treated with hypothermia. Scand. J. Trauma Resusc. Emerg. Med. 21, 23 (2013).