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Guo J, Geng Q, Xu K, Jing W, Li Z, He J, Pan Y, Li Y, Wang T, Long Y, Hou Z, Xu X, Xu P. Development and validation of models for predicting mortality in intertrochanteric fracture surgery patients with perioperative blood transfusion: a prospective multicenter cohort study. Int J Surg 2024; 110:4754-4766. [PMID: 38652158 PMCID: PMC11325989 DOI: 10.1097/js9.0000000000001472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Accepted: 03/31/2024] [Indexed: 04/25/2024]
Abstract
BACKGROUND The association between allogenic blood transfusions and all-cause mortality in surgically treated hip fracture patients with perioperative transfusion (STHFPT) remained unknown. The authors aim to introduce transfusion-related factors, new variables to develop, and validate models to predict mortality in these patients. METHODS A prospective multicenter cohort study was conducted with STHFPT hospitalized during January 2018 and June 2021. The database was divided into training cohort and validation cohort in a ratio of 70-30% using the randomization method. All participants received a minimum of 2-year follow-up and all participants' overall and eight time-specific survival status were recorded. Prediction models were developed using multivariate logistic regression and Cox regression for variable selection. Model performance was measured by determining discrimination, calibration, overall model performance or precision, and utility. Sensitivity analyses were performed to test robustness of the results. RESULTS A total of 7074 consecutive patients were prospectively screened and assessed for eligibility to participate. Finally, 2490 patients met our inclusion and exclusion criteria and 1743 (70%) patients were randomized to the training cohort and 747 (30%) to the validation cohort. The median duration of follow-up was 38.4 months (IQR 28.0-62.0). Our novel models highlight that preoperative transfusion is of significance for short-term mortality while mid-term outcomes are predominantly determined by severe complications, pulmonary complications, and advanced age. Our models showed high discriminative power, good calibration, and precision for mortality prediction in both training and validation cohorts, especially in short-term mortality prediction. CONCLUSIONS The authors introduce transfusion-related factors, new variables to develop, and validate models to predict mortality with STHFPT. The models can be further tested and updated with the ultimate goal of assisting in optimizing individual transfusion strategy.
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Affiliation(s)
- Junfei Guo
- Department of Joint Surgery, Honghui Hospital, Xi'an Jiaotong University, Xi'an, Shaanxi
| | - Qian Geng
- Department of Nursing, Third Hospital of Hebei Medical University
| | - Ke Xu
- Department of Joint Surgery, Honghui Hospital, Xi'an Jiaotong University, Xi'an, Shaanxi
| | - Wensen Jing
- Department of Joint Surgery, Honghui Hospital, Xi'an Jiaotong University, Xi'an, Shaanxi
| | - Zheng Li
- Department of Joint Surgery, Honghui Hospital, Xi'an Jiaotong University, Xi'an, Shaanxi
| | - Jinwen He
- Department of Joint Surgery, Honghui Hospital, Xi'an Jiaotong University, Xi'an, Shaanxi
| | - Ying Pan
- Department of Joint Surgery, Honghui Hospital, Xi'an Jiaotong University, Xi'an, Shaanxi
| | - Yanan Li
- Department of Anesthesiology, Third Hospital of Hebei Medical University
| | - Tao Wang
- Department of Orthopedic Surgery, Third Hospital of Hebei Medical University, Shijiazhuang
| | - Yubin Long
- Department of Orthopedics Surgery, Baoding First Central Hospital, Baoding
| | - Zhiyong Hou
- Department of Orthopedic Surgery, Third Hospital of Hebei Medical University, Shijiazhuang
- Orthopaedic Research Institute of Hebei Province
- NHC Key Laboratory of Intelligent Orthopedic Equipment (Third Hospital of Hebei Medical University), Shijiazhuang, Hebei, People's Republic of China
| | - Xin Xu
- Department of Joint Surgery, Honghui Hospital, Xi'an Jiaotong University, Xi'an, Shaanxi
| | - Peng Xu
- Department of Joint Surgery, Honghui Hospital, Xi'an Jiaotong University, Xi'an, Shaanxi
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Warner LL, Thalji L, Hunter Guevara LR, Warner MA, Kor DJ, Warner DO, Hanson AC, Nemergut ME. Transfusion targets and adverse events in pediatric perioperative acute Anemia. J Clin Anesth 2024; 94:111405. [PMID: 38309132 PMCID: PMC10939750 DOI: 10.1016/j.jclinane.2024.111405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 01/12/2024] [Accepted: 01/29/2024] [Indexed: 02/05/2024]
Abstract
STUDY OBJECTIVE To evaluate the association between pretransfusion and posttransfusion hemoglobin concentrations and the outcomes of children undergoing noncardiac surgery. DESIGN Retrospective review of patient records. We focused on initial postoperative hemoglobin concentrations, which may provide a more useful representation of transfusion adequacy than pretransfusion hemoglobin triggers (the latter often cannot be obtained during acute surgical hemorrhage). SETTING Single-center, observational cohort study. PATIENTS We evaluated all pediatric patients undergoing noncardiac surgery who received intraoperative red blood cell transfusions from January 1, 2008, through December 31, 2018. INTERVENTIONS None. MEASUREMENTS Associations between pre- and posttransfusion hemoglobin concentrations (g/dL), hospital-free days, intensive care unit admission, postoperative mechanical ventilation, and infectious complications were evaluated with multivariable regression modeling. MAIN RESULTS In total, 113,713 unique noncardiac surgical procedures in pediatric patients were evaluated, and 741 procedures met inclusion criteria (median [range] age, 7 [1-14] years). Four hundred ninety-eight patients (68%) with a known preoperative hemoglobin level had anemia; of these, 14% had a preexisting diagnosis of anemia in their health record. Median (IQR) pretransfusion hemoglobin concentration was 8.1 (7.4-9.2) g/dL and median (IQR) initial postoperative hemoglobin concentration was 10.4 (9.3-11.6) g/dL. Each decrease of 1 g/dL in the initial postoperative hemoglobin concentration was associated with increased odds of transfusion within the first 24 postoperative hours (odds ratio [95% CI], 1.62 [1.37-1.93]; P < .001). No significant relationships were observed between postoperative hemoglobin concentrations and hospital-free days (P = .56), intensive care unit admission (P = .71), postoperative mechanical ventilation (P = .63), or infectious complications (P = .74). CONCLUSIONS In transfused patients, there was no association between postoperative hemoglobin values and clinical outcomes, except the need for subsequent transfusion. Most transfused patients presented to the operating room with anemia, which suggests a potential opportunity for perioperative optimization of health before surgery.
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Affiliation(s)
- Lindsay L Warner
- Department of Anesthesiology and Perioperative Medicine (Drs L. Warner, Thalji, Hunter Guevara, M. Warner, Kor, D. Warner, and Nemergut) and Division of Biomedical Statistics and Informatics (Mr Hanson), Mayo Clinic, Rochester, MN, United States of America.
| | - Leanne Thalji
- Department of Anesthesiology and Perioperative Medicine (Drs L. Warner, Thalji, Hunter Guevara, M. Warner, Kor, D. Warner, and Nemergut) and Division of Biomedical Statistics and Informatics (Mr Hanson), Mayo Clinic, Rochester, MN, United States of America
| | - Lindsay R Hunter Guevara
- Department of Anesthesiology and Perioperative Medicine (Drs L. Warner, Thalji, Hunter Guevara, M. Warner, Kor, D. Warner, and Nemergut) and Division of Biomedical Statistics and Informatics (Mr Hanson), Mayo Clinic, Rochester, MN, United States of America
| | - Matthew A Warner
- Department of Anesthesiology and Perioperative Medicine (Drs L. Warner, Thalji, Hunter Guevara, M. Warner, Kor, D. Warner, and Nemergut) and Division of Biomedical Statistics and Informatics (Mr Hanson), Mayo Clinic, Rochester, MN, United States of America
| | - Daryl J Kor
- Department of Anesthesiology and Perioperative Medicine (Drs L. Warner, Thalji, Hunter Guevara, M. Warner, Kor, D. Warner, and Nemergut) and Division of Biomedical Statistics and Informatics (Mr Hanson), Mayo Clinic, Rochester, MN, United States of America
| | - David O Warner
- Department of Anesthesiology and Perioperative Medicine (Drs L. Warner, Thalji, Hunter Guevara, M. Warner, Kor, D. Warner, and Nemergut) and Division of Biomedical Statistics and Informatics (Mr Hanson), Mayo Clinic, Rochester, MN, United States of America
| | - Andrew C Hanson
- Department of Anesthesiology and Perioperative Medicine (Drs L. Warner, Thalji, Hunter Guevara, M. Warner, Kor, D. Warner, and Nemergut) and Division of Biomedical Statistics and Informatics (Mr Hanson), Mayo Clinic, Rochester, MN, United States of America
| | - Michael E Nemergut
- Department of Anesthesiology and Perioperative Medicine (Drs L. Warner, Thalji, Hunter Guevara, M. Warner, Kor, D. Warner, and Nemergut) and Division of Biomedical Statistics and Informatics (Mr Hanson), Mayo Clinic, Rochester, MN, United States of America
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Zhu Y, Xin J, Bi Y, Zhu T, Liu B. The impact of preoperative serum lactate dehydrogenase on mortality and morbidity after noncardiac surgery. Sci Rep 2024; 14:7367. [PMID: 38548761 PMCID: PMC10978990 DOI: 10.1038/s41598-024-53372-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2023] [Accepted: 01/31/2024] [Indexed: 04/01/2024] Open
Abstract
Preoperative serum lactate dehydrogenase (LDH) has been reported to be associated with adverse outcomes following thoracic surgery. However, its association with outcomes in noncardiac surgery as a whole has not been investigated. We conducted a retrospective cohort study at West China Hospital, Sichuan University, from 2018 to 2020, including patients undergoing noncardiac surgery. Multivariable logistic regression and propensity score weighting were employed to assess the link between LDH levels and postoperative outcomes. Preoperative LDH was incorporated into four commonly used clinical models, and its discriminative ability, reclassification, and calibration were evaluated in comparison to models without LDH. Among 130,879 patients, higher preoperative LDH levels (cut-off: 220 U/L) were linked to increased in-hospital mortality (4.382% vs. 0.702%; OR 1.856, 95% CI 1.620-2.127, P < 0.001), myocardial injury after noncardiac surgery (MINS) (3.012% vs. 0.537%; OR 1.911, 95% CI 1.643-2.223, P < 0.001), and ICU admission (15.010% vs. 6.414%; OR 1.765, 95% CI 1.642-1.896, P < 0.001). The inverse probability of treatment-weighted estimation supported these results. Additionally, LDH contributed significantly to four surgical prognostic models, enhancing their predictive capability. Our study revealed a significant association between preoperative LDH and in-hospital mortality, MINS, and ICU admission following noncardiac surgery. Moreover, LDH provided supplementary predictive information, extending the utility of commonly used surgical prognostic scores.
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Affiliation(s)
- Yingchao Zhu
- Department of Anesthesiology, West China Hospital, Sichuan University, No.37, Guoxue Valley, Chengdu, 610000, Sichuan, China
| | - Juan Xin
- Department of Anesthesiology, West China Hospital, Sichuan University, No.37, Guoxue Valley, Chengdu, 610000, Sichuan, China
| | - Yaodan Bi
- Department of Anesthesiology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Tao Zhu
- Department of Anesthesiology, West China Hospital, Sichuan University, No.37, Guoxue Valley, Chengdu, 610000, Sichuan, China.
| | - Bin Liu
- Department of Anesthesiology, West China Hospital, Sichuan University, No.37, Guoxue Valley, Chengdu, 610000, Sichuan, China
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Wang X, Tao J, Zhong Y, Yao Y, Wang T, Gao Q, Xu G, Lv T, Li X, Sun D, Cheng Z, Liu M, Xu J, Wu C, Wang Y, Wang R, Zheng B, Yan M. Nadir Hemoglobin Concentration After Spinal Tumor Surgery: Association With Risk of Composite Adverse Events. Global Spine J 2023:21925682231212860. [PMID: 37918436 DOI: 10.1177/21925682231212860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2023] Open
Abstract
STUDY DESIGN Retrospective case-control study. OBJECTIVE To explore the association of early postoperative nadir hemoglobin with risk of a composite outcome of anemia-related and other adverse events. METHODS We retrospectively analyzed data from spinal tumor patients who received intraoperative blood transfusion between September 1, 2013 and December 31, 2020. Uni- and multivariate logistic regression was used to explore relationships of clinicodemographic and surgical factors with risk of composite in-hospital adverse events, including death. Subgroup analysis explored the relationship between early postoperative nadir hemoglobin and composite adverse events. RESULTS Among the 345 patients, 331 (95.9%) experienced early postoperative anemia and 69 (20%) experienced postoperative composite adverse events. Multivariate logistic regression analysis showed that postoperative nadir Hb (OR = .818, 95% CI: .672-.995, P = .044), ASA ≥3 (OR = 2.007, 95% CI: 1.086-3.707, P = .026), intraoperative RBC infusion volume (OR = 1.133, 95% CI: 1.009-1.272, P = .035), abnormal hypertension (OR = 2.199, 95% CI: 1.085-4.457, P = .029) were correlated with composite adverse events. The lumbar spinal tumor was associated with composite adverse events with a decreased odds compared to thoracic spinal tumors (OR = .444, 95% CI: .226-.876, P = .019). Compared to patients with postoperative nadir hemoglobin ≥11.0 g/dL, those with nadir <9.0 g/dL were at significantly higher risk of postoperative composite adverse events (OR = 2.709, 95% CI: 1.087-6.754, P = .032). CONCLUSION Nadir hemoglobin <9.0 g/dL after spinal tumor surgery is associated with greater risk of postoperative composite adverse events in patients who receive intraoperative blood transfusion.
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Affiliation(s)
- Xuena Wang
- Department of Anesthesiology, Second Affiliated Hospital, Zhejiang University School of Medicine , Hangzhou, China
- Department of Anesthesiology, The First People's Hospital of Huzhou, First Affiliated Hospital of Huzhou Normal College, Huzhou, China
| | - Jiachun Tao
- Department of Anesthesiology, Second Affiliated Hospital, Zhejiang University School of Medicine , Hangzhou, China
| | - Yinbo Zhong
- Department of Anesthesiology, Second Affiliated Hospital, Zhejiang University School of Medicine , Hangzhou, China
| | - Yuanyuan Yao
- Department of Anesthesiology, Second Affiliated Hospital, Zhejiang University School of Medicine , Hangzhou, China
| | - Tingting Wang
- Department of Anesthesiology, Second Affiliated Hospital, Zhejiang University School of Medicine , Hangzhou, China
| | - Qi Gao
- Department of Anesthesiology, Second Affiliated Hospital, Zhejiang University School of Medicine , Hangzhou, China
| | - Guangxin Xu
- Department of Anesthesiology, Second Affiliated Hospital, Zhejiang University School of Medicine , Hangzhou, China
| | - Tao Lv
- Department of Anesthesiology, Second Affiliated Hospital, Zhejiang University School of Medicine , Hangzhou, China
| | - Xuejie Li
- Department of Anesthesiology, Second Affiliated Hospital, Zhejiang University School of Medicine , Hangzhou, China
- School of Anesthesiology, Weifang Medical University, Weifang, China
| | - Dawei Sun
- Department of Anesthesiology, Second Affiliated Hospital, Zhejiang University School of Medicine , Hangzhou, China
| | - Zhenzhen Cheng
- Department of Anesthesiology, Second Affiliated Hospital, Zhejiang University School of Medicine , Hangzhou, China
| | - Mingxia Liu
- Department of Anesthesiology, Second Affiliated Hospital, Zhejiang University School of Medicine , Hangzhou, China
| | - Jingpin Xu
- Department of Anesthesiology, Second Affiliated Hospital, Zhejiang University School of Medicine , Hangzhou, China
| | - Chaomin Wu
- Department of Anesthesiology, Second Affiliated Hospital, Zhejiang University School of Medicine , Hangzhou, China
| | - Ying Wang
- Department of Anesthesiology, Second Affiliated Hospital, Zhejiang University School of Medicine , Hangzhou, China
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, China
| | - Ruiyu Wang
- Department of Anesthesiology, Second Affiliated Hospital, Zhejiang University School of Medicine , Hangzhou, China
- School of Anesthesiology, Weifang Medical University, Weifang, China
| | - Bin Zheng
- Department of Surgery, University of Alberta, Edmonton, AB, Canada
| | - Min Yan
- Department of Anesthesiology, Second Affiliated Hospital, Zhejiang University School of Medicine , Hangzhou, China
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Kiyatkin ME, Mladinov D, Jarzebowski ML, Warner MA. Patient Blood Management, Anemia, and Transfusion Optimization Across Surgical Specialties. Anesthesiol Clin 2023; 41:161-174. [PMID: 36871997 PMCID: PMC10066799 DOI: 10.1016/j.anclin.2022.10.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
Abstract
Patient blood management (PBM) is a systematic, evidence-based approach to improve patient outcomes by managing and preserving a patient's own blood and minimizing allogenic transfusion need and risk. According to the PBM approach, the goals of perioperative anemia management include early diagnosis, targeted treatment, blood conservation, restrictive transfusion except in cases of acute and massive hemorrhage, and ongoing quality assurance and research efforts to advance overall blood health.
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Affiliation(s)
- Michael E Kiyatkin
- Department of Anesthesiology, Albert Einstein College of Medicine, Montefiore Medical Center, 111 East 210th Street, Bronx, NY 10467, USA.
| | - Domagoj Mladinov
- Department of Anesthesiology, Perioperative and Pain Medicine, Brigham and Women's Hospital, 75 Francis Street, Boston, MA 02115, USA
| | - Mary L Jarzebowski
- Department of Anesthesiology, University of Michigan, 1540 East Hospital Drive, Ann Arbor, MI 48109, USA
| | - Matthew A Warner
- Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Rochester, 200 1st Street, Rochester, MN 55905, USA
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Zhou Y, Liu S. Threshold heterogeneity of perioperative hemoglobin drop for acute kidney injury after noncardiac surgery: a propensity score weighting analysis. BMC Nephrol 2022; 23:206. [PMID: 35690725 PMCID: PMC9188693 DOI: 10.1186/s12882-022-02834-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Accepted: 06/03/2022] [Indexed: 11/10/2022] Open
Abstract
Background Perioperative hemoglobin drop after noncardiac surgery is associated with acute kidney injury (AKI). However, opinion on the tolerable difference in postoperative hemoglobin drop in patients with different preoperative hemoglobin levels does not reach a consensus. This study aimed to identify hemoglobin drop thresholds for AKI after noncardiac surgery stratified by preoperative hemoglobin levels. Method This was a single-center retrospective cohort study for elective noncardiac surgery from January 1, 2012, to December 31, 2018. The endpoint was the occurrence of AKI 7 days postoperatively in the hospital. The generalized additive model described the non-linear relationship between hemoglobin drop and AKI occurrence. The minimum P-value approach identified cut-off points of hemoglobin drop within postoperative 7 days for patients with or without preoperative anemia. Stratified by preoperative anemia, hemoglobin drop’s odds ratio as continuous, quintile and dichotomous variables by various cut-off points for postoperative AKI were calculated in multivariate logistic regression models before and after propensity score weighting (PSW). Results Of the 35,631 surgery, 5.9% (2105 cases) suffered postoperative AKI. Non-linearity was found between hemoglobin drop and postoperative AKI occurrence. The thresholds and corresponding odds ratio of perioperative hemoglobin drop for patients with and without preoperative anemia were 18 g/L (1.38 (95%CI 1.14 -1.62), P < .001; after PSW: 1.42 (95%CI 1.17 -1.74), P < .001) and 43 g/L (1.81 (95%CI 1.35—2.27), P < .001; after PSW: 2.88 (95%CI 1.85—4.50), P < .001) respectively. Overall thresholds and corresponding odds ratio were 43 g/L (1.82 (95%CI 1.42—2.21)), P < .001; after PSW: 3.29 (95%CI 2.00—5.40), P < .001). Sensitivity analysis showed similar results. Heterogeneity subgroup analysis showed that intraoperatively female patients undergoing intraperitoneal surgery without colloid infusion seemed to be more vulnerable to higher hemoglobin drop. Further analysis showed a possible linear relationship between preoperative hemoglobin and perioperative hemoglobin drop thresholds. Additionally, this study found that the creatinine level changed simultaneously with hemoglobin level within five postoperative days. Conclusions Heterogeneity of hemoglobin drop endurability exists after noncardiac non-kidney surgery. More care and earlier intervention should be put on patients with preoperative anemia. Supplementary Information The online version contains supplementary material available at 10.1186/s12882-022-02834-3.
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Affiliation(s)
- Yan Zhou
- Department of Anesthesiology and Critical Care Medicine, Peking University First Hospital, Beijing, 100034, China.
| | - Si Liu
- Department of Database Center, Peking University First Hospital, Beijing, 100034, China
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Wajda-Pokrontka M, Nadziakiewicz P, Krauchuk A, Ochman M, Zawadzki F, Przybyłowski P. Incidence and Perioperative Risk Factors of Acute Kidney Injury Among Lung Transplant Recipients. Transplant Proc 2022; 54:1120-1123. [PMID: 35422319 DOI: 10.1016/j.transproceed.2022.02.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2022] [Accepted: 02/18/2022] [Indexed: 12/30/2022]
Abstract
BACKGROUND Acute kidney injury (AKI) is a significant burden in an early postoperative period after lung transplantation (LT). The development of severe AKI, including a need for continuous renal replacement therapy (CRRT), is associated with increased mortality among lung transplant recipients. Evaluation of AKI incidence and predictive factors related to the development of severe AKI and with the use of CRRT in the early postoperative period after LT. METHODS Retrospective study of 73 consecutive patients after LT operated between 2015 and 2018 in our center. We noted the stage of AKI according to KDIGO guidelines in the 7 postoperative days. RESULTS We noted AKI among 62 lung transplant recipients (84.9%). We recognized the first and second stages of AKI in 21 patients (28.8%) and 19 patients 26%, respectively (group A). We identified severe AKI (group C) in 22 recipients (30.1%), 9 of whom needed CRRT postoperatively. There was a nonsignificant difference between groups in baseline serum creatinine (0.69 ± 0.22 mg/dL vs 0.84 ± 0.34; P = .073). Group C subjects statistically more often suffered from pulmonary hypertension (P < .001) and diabetes (P < .001). In both groups, the duration of the procedure was comparable, but, among patients with severe AKI, procedures were performed more often with the use of extracorporeal circulation (50% vs 68%; P = .194) CONCLUSIONS: Pulmonary hypertension and diabetes could be significant risk factors of high-grade AKI development after LT. Identification of factors modifying renal insufficiency development in lung transplant recipients needs further investigations.
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Affiliation(s)
- Marta Wajda-Pokrontka
- Department of Cardiac Anesthesia and Intensive Therapy, Silesian Centre for Heart Diseases, Medical University of Silesia, Zabrze, Poland; Faculty of Medical Sciences in Zabrze, Medical University of Silesia, Katowice, Poland.
| | - Paweł Nadziakiewicz
- Department of Cardiac Anesthesia and Intensive Therapy, Silesian Centre for Heart Diseases, Medical University of Silesia, Zabrze, Poland; Faculty of Medical Sciences in Zabrze, Medical University of Silesia, Katowice, Poland
| | - Alena Krauchuk
- Medical University of Silesia, Doctoral School, Katowice, Poland
| | - Marek Ochman
- Department of Cardiac, Vascular and Endovascular Surgery and Transplantology, Silesian Center for Heart Diseases in Zabrze, Medical University of Silesia, Katowice, Poland
| | - Fryderyk Zawadzki
- Department of Cardiac, Vascular and Endovascular Surgery and Transplantology, Silesian Center for Heart Diseases in Zabrze, Medical University of Silesia, Katowice, Poland
| | - Piotr Przybyłowski
- Department of Cardiac, Vascular and Endovascular Surgery and Transplantology, Silesian Center for Heart Diseases in Zabrze, Medical University of Silesia, Katowice, Poland
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Maheshwari K. Principles for minimizing oxygen debt: can they translate to clinical application and improve outcomes? Best Pract Res Clin Anaesthesiol 2021; 35:543-549. [PMID: 34801216 DOI: 10.1016/j.bpa.2020.09.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 09/08/2020] [Accepted: 09/19/2020] [Indexed: 01/28/2023]
Abstract
Oxygen delivery is dependent on pulmonary gas exchange, cardiac output, blood oxygen-carrying capacity, and tissue oxygen extraction. Reduction in oxygen delivery or higher oxygen consumption can initiate complex protective cellular processes precipitating oxygen debt. In critically ill and potentially surgical patients, stress and consequent hormonal or metabolic changes can trigger oxygen debt which is associated with worse morbidity and mortality. Increase in oxygen delivery by augmenting cardiac output or by increasing fraction of inspired oxygen (FiO2) can help reduce oxygen debt. However, the extent of oxygen debt in an individual patient is poorly defined and difficult to measure. Furthermore, large heterogeneity in clinical trials assessing outcomes benefit of increasing oxygen delivery limits our ability to recommend goal directed fluid therapy aimed at increasing cardiac ouput or higher FiO2. To understand and prevent oxygen debt in critically ill and surgical patients, we need to develop continuous monitoring techniques to assess the balance of oxygen delivery and consumption. Furthermore, methods of increasing oxygen delivery like goal-directed fluid therapy, higher FiO2 and anemia prevention should be rigorously evaluated with focus on establishing outcomes benefit.
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Affiliation(s)
- Kamal Maheshwari
- Department of General Anesthesiology, Cleveland Clinic, Cleveland, OH, USA; Department of Outcomes Research, Cleveland Clinic, Cleveland, OH, USA. http://www.OR.org
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9
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Chaudhry R, Wanderer JP, Mubashir T, Kork F, Morse J, Waseem R, Zaki JF, Shaw AD, Eltzschig HK, Liang Y. Incidence and Predictive Factors of Acute Kidney Injury After Off-pump Lung Transplantation. J Cardiothorac Vasc Anesth 2021; 36:93-99. [PMID: 34625351 DOI: 10.1053/j.jvca.2021.09.021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 09/01/2021] [Accepted: 09/13/2021] [Indexed: 12/30/2022]
Abstract
OBJECTIVES To determine the incidence and predictive factors of acute kidney injury (AKI) after off-pump lung transplantation. DESIGN A retrospective cohort study. SETTING The operating room and intensive care unit. PARTICIPANTS Adult patients who underwent lung transplant without cardiopulmonary bypass or extracorporeal membrane oxygenator between 2006 and 2016 at the Vanderbilt University Medical Center. INTERVENTIONS None. MEASUREMENTS AND MAIN RESULTS The presence of postoperative AKI was assessed by the Kidney Disease: Improving Global Outcomes criteria in the first seven postoperative days. Multivariate logistic regression analysis was used to determine the independent predictive factors of AKI. One hundred forty-eight patients were included in the final analysis, of whom 63 (42.6%) subsequently developed AKI: 43 (29.0%) stage 1, ten (6.8%) stage 2, and ten (6.8%) stage 3. Patients who had AKI had a longer hospital length of stay (12 days [interquartile range (IQR): 10-17] vs ten days [IQR: 8-12], p < 0.001). For every one-year increase in age, the odds of AKI decreased by 8% (odds ratio [OR] 0.92, 95% confidence interval [CI]: 0.87-0.98, p = 0.008). The odds of having AKI in patients with bilateral lung transplant was lower than patients with unilateral transplant (OR 0.09, 95% CI: 0.01-0.63, p = 0.015). Additionally, a diagnosis of chronic obstructive pulmonary disease increased the odds of AKI by four-fold compared with a diagnosis of idiopathic pulmonary fibrosis (OR 4.73, 95% CI: 1.44-15.56, p = 0.011). CONCLUSIONS AKI is a common complication after off-pump lung transplantation and is associated with increased hospital length of stay. Younger age, unilateral lung transplant, and diagnosis of chronic obstructive pulmonary disease are independently associated with AKI.
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Affiliation(s)
- Rabail Chaudhry
- Department of Anesthesiology, The University of Texas Health Science Center at Houston, McGovern Medical School, Houston, TX
| | - Jonathan P Wanderer
- Department of Anesthesia, Vanderbilt University School of Medicine, Nashville, TN
| | - Talha Mubashir
- Department of Anesthesiology, The University of Texas Health Science Center at Houston, McGovern Medical School, Houston, TX
| | - Felix Kork
- Department of Anesthesiology, Medical Faculty, RWTH Aachen University, Aachen, Germany
| | - Jennifer Morse
- Department of Biostatistics, Vanderbilt University School of Medicine, Nashville, TN
| | - Rida Waseem
- Department of Anesthesia and Pain Management, Toronto Western Hospital, University Health Network, University of Toronto, Toronto, ON, Canada
| | - John F Zaki
- Department of Anesthesiology, The University of Texas Health Science Center at Houston, McGovern Medical School, Houston, TX
| | - Andrew D Shaw
- Department of Intensive Care and Resuscitation, Cleveland Clinic, Cleveland, OH
| | - Holger K Eltzschig
- Department of Anesthesiology, The University of Texas Health Science Center at Houston, McGovern Medical School, Houston, TX
| | - Yafen Liang
- Department of Anesthesiology, The University of Texas Health Science Center at Houston, McGovern Medical School, Houston, TX.
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Gupta P, Kang KK, Pasternack JB, Klein E, Feierman DE. Perioperative Transfusion Associated With Increased Morbidity and Mortality in Geriatric Patients Undergoing Hip Fracture Surgery. Geriatr Orthop Surg Rehabil 2021; 12:21514593211015118. [PMID: 34035979 PMCID: PMC8132085 DOI: 10.1177/21514593211015118] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 04/08/2021] [Accepted: 04/12/2021] [Indexed: 12/15/2022] Open
Abstract
Introduction: Both conservative and liberal transfusion thresholds, in regard to hematocrit and hemoglobin levels, have been widely studied with varying outcomes. The aim of this study was to evaluate if transfusion administered peri- (anytime during the admission), pre-, intra-, or postoperatively an its association with morbidity and mortality in the geriatric population undergoing hip surgery. Methods: This study was an institutional review board approved retrospective analysis of data collected from 841 patients at a single urban institution who underwent surgical repairs for hip fractures from 2008 to 2010. Results: Our analysis included data from 841 surgical patients. Mean patient age was 83, 74% were female, 48% received spinal anesthesia while 52% underwent general anesthesia. Out of 841 patients, 425 were transfused during the perioperative period. Most transfusions occurred postoperatively. Perioperative, intraoperative and postoperative transfusion was associated with an increase in post-operative AKI. Intraoperative blood transfusion was associated with an increase in morbidity (11.6% increased to 22.2%) by 1.9 fold, AKI (3.9% increased to 11.1%) by 2.8 fold, as well as an increase in mortality (5.2 increased to 15.6%) within 60 days by 3 fold. Conclusions: This may suggest that patients transfused prior to surgery, despite having met a specific trigger hemoglobin level earlier, may have been treated before deteriorating to a point that would cause future systemic implications.
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Affiliation(s)
- Piyush Gupta
- Department of Anesthesiology, Maimonides Medical Center, Brooklyn, NY, USA
| | - Kevin K Kang
- Department of Orthopedics, Maimonides Medical Center, Brooklyn, NY, USA
| | | | - Elliot Klein
- Department of Anesthesiology, Donald and Barbara Zucker School of Medicine at Hofstra, Queens NY, USA
| | - Dennis E Feierman
- Department of Anesthesiology, Maimonides Medical Center, Brooklyn, NY, USA
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Ripoll JG, Smith MM, Hanson AC, Schulte PJ, Portner ER, Kor DJ, Warner MA. Sex-Specific Associations Between Preoperative Anemia and Postoperative Clinical Outcomes in Patients Undergoing Cardiac Surgery. Anesth Analg 2021; 132:1101-1111. [PMID: 33543869 DOI: 10.1213/ane.0000000000005392] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND Preoperative anemia is common in cardiac surgery, yet there were limited data describing the role of sex in the associations between anemia and clinical outcomes. Understanding these relationships may guide preoperative optimization efforts. METHODS This is an observational cohort study of adults undergoing isolated coronary artery bypass grafting or single- or double-valve surgery from 2008 to 2018 at a large tertiary medical center. Multivariable regression assessed the associations between preoperative hemoglobin concentrations and a primary outcome of postoperative acute kidney injury (AKI) and secondary outcomes of perioperative red blood cell (RBC) transfusion, reoperation, vascular complications (ie, stroke, pulmonary embolism, and myocardial infarction), and hospital length of stay (LOS). Each outcome was a single regression model, using interaction terms to assess sex-specific associations between hemoglobin and outcome. RESULTS A total of 4117 patients were included (57% men). Linear splines with sex-specific knots (13 g/dL in women and 14 g/dL in men) provided the best overall fit for preoperative hemoglobin and outcome relationships. In women, each 1 g/dL decrease in hemoglobin <13 g/dL was associated with increased odds of AKI (odds ratio = 1.49; 95% confidence interval [CI], [1.23-1.81]; P < .001), and there was no significant association between hemoglobin per 1 g/dL >13 g/dL and AKI (0.90 [0.56-1.45]; P = .67). The association between hemoglobin and AKI in men did not meet statistical significance (1.10 [0.99-1.22]; P = .076, per 1 g/dL decrease <14 g/dL; 1.00 [0.79-1.26]; P = .98 for hemoglobin per 1 g/dL >14 g/dL). In women, lower preoperative hemoglobin (per 1 g/dL decrease <13 g/dL) was associated with increased odds of RBC transfusion (2.90 [2.33-3.60]; P < .001), reoperation (1.27 [1.11-1.45]; P < .001) and a longer hospital LOS (multiplicative increase in geometric mean 1.05 [1.03-1.07]; P < .001). In men, preoperative hemoglobin (per 1 g/dL decrease <14 g/dL) was associated with increased odds of perioperative RBCs (2.56 [2.27-2.88]; P < .001) and longer hospital LOS (multiplicative increase in geometric mean 1.02 [1.01-1.04] days; P < .001) but not reoperation (0.94 [0.85-1.04]; P = .256). Preoperative hemoglobin per 1 g/dL >13 g/dL in women and 14 g/dL in men were associated with lower odds of RBCs transfusion (0.57 [0.47-0.69]; P < .001 and 0.74 [0.60-0.91]; P = .005, respectively). CONCLUSIONS Preoperative anemia was associated with inferior clinical outcomes after cardiac surgery. The associations between hemoglobin and outcomes were distinct for women and men, with different spline knot points identified (13 and 14 g/dL, respectively). Clinicians should consider data-driven approaches to determine preoperative hemoglobin values associated with increasing risk for adverse perioperative outcomes across sexes.
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Affiliation(s)
- Juan G Ripoll
- From the Department of Anesthesiology and Perioperative Medicine
| | - Mark M Smith
- Division of Cardiothoracic Anesthesia, Department of Anesthesiology and Perioperative Medicine
| | | | | | - Erica R Portner
- Anesthesia Clinical Research Unit, Department of Anesthesiology and Perioperative Medicine
| | - Daryl J Kor
- Division of Critical Care Medicine, Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Rochester, Minnesota
| | - Matthew A Warner
- Division of Critical Care Medicine, Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Rochester, Minnesota
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12
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Matzek LJ, Hanson AC, Schulte PJ, Evans KD, Kor DJ, Warner MA. The Prevalence and Clinical Significance of Preoperative Thrombocytopenia in Adults Undergoing Elective Surgery: An Observational Cohort Study. Anesth Analg 2021; 132:836-845. [PMID: 33433115 DOI: 10.1213/ane.0000000000005347] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND Preoperative thrombocytopenia is associated with inferior outcomes in surgical patients, though concurrent anemia may obfuscate these relationships. This investigation assesses the prevalence and clinical significance of preoperative thrombocytopenia with thorough consideration of preoperative anemia status. METHODS This is an observational cohort study of adults undergoing elective surgery with planned postoperative hospitalization from January 1, 2009 to May 3, 2018. Patients were designated into 4 groups: normal platelet and hemoglobin concentrations, isolated thrombocytopenia (ie, platelet count <100 × 109/L), isolated anemia (ie, hemoglobin <12 g/dL women, <13.5 g/dL men), and thrombocytopenia with anemia. Thrombocytopenia was further defined as incidental (ie, previously undiagnosed) or nonincidental. Multivariable regression analyses were utilized to assess the relationships between thrombocytopenia status and clinical outcomes, with a primary outcome of hospital length of stay. RESULTS A total of 120,348 patients were included for analysis: 72.3% (95% confidence interval [CI], 72.1-72.6) normal preoperative laboratory values, 26.3% (26.1-26.6) isolated anemia, 0.80% (0.75-0.86) thrombocytopenia with anemia, and 0.52% (0.48-0.56) isolated thrombocytopenia (0.38% [0.34-0.41] nonincidental, 0.14% [0.12-0.17] incidental). Thrombocytopenia was associated with longer hospital length of stay in those with concurrent anemia (multiplicative increase of the geometric mean 1.05 [1.00, 1.09] days; P = .034) but not in those with normal preoperative hemoglobin concentrations (multiplicative increase of the geometric mean 1.02 [0.96, 1.07] days; P = .559). Thrombocytopenia was associated with increased odds for intraoperative transfusion regardless of anemia status (nonanemic: 3.39 [2.79, 4.12]; P < .001 vs anemic: 2.60 [2.24, 3.01]; P < .001). Thrombocytopenia was associated with increased rates of intensive care unit (ICU) admission in nonanemic patients (1.56 [1.18, 2.05]; P = .002) but not in those with preoperative anemia (0.93 [0.73, 1.19]; P = .578). CONCLUSIONS Preoperative thrombocytopenia is associated with clinical outcomes in elective surgery, both in the presence and absence of concurrent anemia. However, isolated thrombocytopenia is rare (0.5%) and is usually identified before preoperative testing. It is unlikely that routine thrombocytopenia screening is indicated for most patients.
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Affiliation(s)
- Luke J Matzek
- From the Department of Anesthesiology and Perioperative Medicine
| | | | | | | | - Daryl J Kor
- From the Department of Anesthesiology and Perioperative Medicine.,Department of Biomedical Statistics and Informatics
| | - Matthew A Warner
- From the Department of Anesthesiology and Perioperative Medicine.,Division of Critical Care Medicine, Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Rochester, Minnesota
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13
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Lo BD, Cho BC, Hensley NB, Cruz NC, Gehrie EA, Frank SM. Impact of body weight on hemoglobin increments in adult red blood cell transfusion. Transfusion 2021; 61:1412-1423. [PMID: 33629773 DOI: 10.1111/trf.16338] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Revised: 01/14/2021] [Accepted: 01/23/2021] [Indexed: 01/28/2023]
Abstract
BACKGROUND Though weight is a major consideration when transfusing blood in pediatric patients, it is generally not considered when dosing transfusions in adults. We hypothesized that the change in hemoglobin (Hb) concentration is inversely proportional to body weight when transfusing red blood cells (RBC) in adults. METHODS A total of 13,620 adult surgical patients at our institution were assessed in this retrospective cohort study (2009-2016). Patients were stratified based on total body weight (kg): 40-59.9 (16.6%), 60-79.9 (40.4%), 80-99.9 (28.8%), 100-119.9 (11.3%), and 120-139.9 (2.9%). The primary outcome was the change in Hb per RBC unit transfused. Subgroup analyses were performed after stratification by sex (male/female) and the total number of RBC units received (1/2/≥3 units). Multivariable models were used to assess the association between weight and change in Hb. RESULTS As patients' body weight increased, there was a decrease in the mean change in Hb per RBC unit transfused (40-59.9 kg: 0.85 g/dL, 60-79.9 kg: 0.73 g/dL, 80-99.9 kg: 0.66 g/dL, 100-119.9 kg: 0.60 g/dL, 120-139.9 kg: 0.55 g/dL; p < .0001). This corresponded with a 35% difference in the change in Hb between the lowest and highest weight categories on univariate analysis. Similar trends were seen after subgroup stratification. On multivariable analysis, for every 20 kg increase in patient weight, there was a ~6.5% decrease in the change in Hb per RBC unit transfused (p < .0001). CONCLUSIONS Patient body weight differentially impacts the change in Hb after RBC transfusion. These findings justify incorporating body weight into the clinical decision-making process when transfusing blood in adult surgical patients.
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Affiliation(s)
- Brian D Lo
- Department of Anesthesiology/Critical Care Medicine, The Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
| | - Brian C Cho
- Department of Anesthesiology/Critical Care Medicine, The Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
| | - Nadia B Hensley
- Department of Anesthesiology/Critical Care Medicine, The Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
| | - Nicolas C Cruz
- Department of Anesthesiology/Critical Care Medicine, The Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
| | - Eric A Gehrie
- Department of Pathology (Transfusion Medicine), The Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
| | - Steven M Frank
- Department of Anesthesiology/Critical Care Medicine, The Johns Hopkins Medical Institutions, Baltimore, Maryland, USA.,The Armstrong Institute for Patient Safety and Quality, The Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
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14
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Liu LP, Zhao QY, Wu J, Luo YW, Dong H, Chen ZW, Gui R, Wang YJ. Machine Learning for the Prediction of Red Blood Cell Transfusion in Patients During or After Liver Transplantation Surgery. Front Med (Lausanne) 2021; 8:632210. [PMID: 33693019 PMCID: PMC7937729 DOI: 10.3389/fmed.2021.632210] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2020] [Accepted: 01/18/2021] [Indexed: 12/12/2022] Open
Abstract
Aim: This study aimed to use machine learning algorithms to identify critical preoperative variables and predict the red blood cell (RBC) transfusion during or after liver transplantation surgery. Study Design and Methods: A total of 1,193 patients undergoing liver transplantation in three large tertiary hospitals in China were examined. Twenty-four preoperative variables were collected, including essential population characteristics, diagnosis, symptoms, and laboratory parameters. The cohort was randomly split into a train set (70%) and a validation set (30%). The Recursive Feature Elimination and eXtreme Gradient Boosting algorithms (XGBOOST) were used to select variables and build machine learning prediction models, respectively. Besides, seven other machine learning models and logistic regression were developed. The area under the receiver operating characteristic (AUROC) was used to compare the prediction performance of different models. The SHapley Additive exPlanations package was applied to interpret the XGBOOST model. Data from 31 patients at one of the hospitals were prospectively collected for model validation. Results: In this study, 72.1% of patients in the training set and 73.2% in the validation set underwent RBC transfusion during or after the surgery. Nine vital preoperative variables were finally selected, including the presence of portal hypertension, age, hemoglobin, diagnosis, direct bilirubin, activated partial thromboplastin time, globulin, aspartate aminotransferase, and alanine aminotransferase. The XGBOOST model presented significantly better predictive performance (AUROC: 0.813) than other models and also performed well in the prospective dataset (accuracy: 76.9%). Discussion: A model for predicting RBC transfusion during or after liver transplantation was successfully developed using a machine learning algorithm based on nine preoperative variables, which could guide high-risk patients to take appropriate preventive measures.
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Affiliation(s)
- Le-Ping Liu
- Department of Blood Transfusion, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Qin-Yu Zhao
- Department of Blood Transfusion, The Third Xiangya Hospital of Central South University, Changsha, China
- College of Engineering and Computer Science, Australian National University, Canberra, ACT, Australia
| | - Jiang Wu
- Department of Blood Transfusion, Renji Hospital Affiliated to Shanghai Jiao Tong University, Shanghai, China
| | - Yan-Wei Luo
- Department of Blood Transfusion, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Hang Dong
- Department of Blood Transfusion, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Zi-Wei Chen
- Department of Laboratory Medicine, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Rong Gui
- Department of Blood Transfusion, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Yong-Jun Wang
- Department of Blood Transfusion, The Second Xiangya Hospital of Central South University, Changsha, China
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15
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Menger J, Koch S, Mouhieddine M, Schwarz S, Hoetzenecker K, Jaksch P, Steinlechner B, Dworschak M. Initial Postoperative Hemoglobin Values Are Independently Associated With One-Year Mortality in Patients Undergoing Double-Lung Transplantation Requiring Intraoperative Transfusion. J Cardiothorac Vasc Anesth 2020; 35:2961-2968. [PMID: 33478880 DOI: 10.1053/j.jvca.2020.12.040] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 12/08/2020] [Accepted: 12/23/2020] [Indexed: 11/11/2022]
Abstract
OBJECTIVE To evaluate the association of postoperative hemoglobin values and mortality in patients undergoing double- lung transplantation with intraoperative transfusion. DESIGN Retrospective cohort study. SETTING University hospital. PARTICIPANTS Adult patients who underwent double-lung transplantation at the authors' institution, with intraoperative transfusion of packed red blood cells between 2009 and 2015. INTERVENTIONS None. MEASUREMENTS AND MAIN RESULTS Intraoperative transfusion requirements and general characteristics of 554 patients were collected. A generalized additive model, controlling for postoperative hemoglobin levels, number of transfused units of packed red blood cells, perioperative change in hemoglobin levels, disease leading to lung transplantation, and postoperative extracorporeal membrane oxygenation, was created to predict one-year mortality. A postoperative hemoglobin level of 11.3 g/dL was calculated as an optimal cutoff point. The patients were stratified according to this level. The end -point was all-cause one-year mortality after double-lung transplantation, assessed using the Kaplan-Meier analysis with log-rank test. All-cause mortality of the 554 patients was 17%. Postoperatively, 171 patients (31%) were categorized as being below the cutoff point. Improved survival was observed in the group with higher postoperative hemoglobin values (p = 0.002). CONCLUSION Lower postoperative hemoglobin levels in double-lung transplantation recipients were associated with increased mortality during the first year after surgery. Confirmation of these findings in additional investigations could alter patient blood management for double-lung transplantation.
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Affiliation(s)
- Johannes Menger
- Division of Cardiothoracic and Vascular Anesthesia and Intensive Care Medicine, Department of Anesthesia, Intensive Care Medicine and Pain Medicine, General Hospital Vienna, Medical University of Vienna, Wien, Austria
| | - Stefan Koch
- Division of Cardiothoracic and Vascular Anesthesia and Intensive Care Medicine, Department of Anesthesia, Intensive Care Medicine and Pain Medicine, General Hospital Vienna, Medical University of Vienna, Wien, Austria
| | - Mohamed Mouhieddine
- Division of Cardiothoracic and Vascular Anesthesia and Intensive Care Medicine, Department of Anesthesia, Intensive Care Medicine and Pain Medicine, General Hospital Vienna, Medical University of Vienna, Wien, Austria
| | - Stefan Schwarz
- Division of Thoracic Surgery, Department of Surgery, General Hospital Vienna, Medical University of Vienna, Wien, Austria
| | - Konrad Hoetzenecker
- Division of Thoracic Surgery, Department of Surgery, General Hospital Vienna, Medical University of Vienna, Wien, Austria
| | - Peter Jaksch
- Division of Thoracic Surgery, Department of Surgery, General Hospital Vienna, Medical University of Vienna, Wien, Austria
| | - Barbara Steinlechner
- Division of Cardiothoracic and Vascular Anesthesia and Intensive Care Medicine, Department of Anesthesia, Intensive Care Medicine and Pain Medicine, General Hospital Vienna, Medical University of Vienna, Wien, Austria
| | - Martin Dworschak
- Division of Cardiothoracic and Vascular Anesthesia and Intensive Care Medicine, Department of Anesthesia, Intensive Care Medicine and Pain Medicine, General Hospital Vienna, Medical University of Vienna, Wien, Austria.
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16
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Kerfeld MJ, Kor DJ, Frank RD, Hanson AC, Passe MA, Warner MA. Hospital discharge hemoglobin values and posthospitalization clinical outcomes in transfused patients undergoing noncardiac surgery. Transfusion 2020; 60:2250-2259. [PMID: 32794229 DOI: 10.1111/trf.16002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 05/07/2020] [Accepted: 06/11/2020] [Indexed: 01/28/2023]
Abstract
BACKGROUND Red blood cell (RBC) transfusion is common in surgical patients, yet optimal transfusion targets are incompletely defined in the perioperative period. Hemoglobin levels at the time of hospital discharge may provide insight into transfusion practices, anemia management, and patient outcomes. STUDY DESIGN AND METHODS This is an observational cohort study of adults receiving RBC transfusion during noncardiac surgery from 2010 to 2014. Multivariable regression was used to assess the relationships between hospital discharge hemoglobin concentrations, anemia severity (severe: <8 g/dL; moderate: 8-10 g/dL; mild/none: ≥10 g/dL), and clinical outcomes, including a primary outcome of 30-day hospital readmission and secondary outcomes of posthospitalization RBC transfusion, composite stroke or myocardial infarction, and mortality. RESULTS A total of 3129 patients were included: 165 (5%) with severe discharge anemia, 1962 (63%) moderate, and 1002 (32%) with mild/none. Five hundred ninety-two (19%) were readmitted, with the highest rates observed with severe anemia (26% vs 19% for mild/none). Readmissions were not significantly different after multivariable adjustment (overall P = .216); however, in those receiving postoperative intensive care, severe anemia was associated with increased readmission rates (hazard ratio [HR], 1.72; 95% confidence interval [CI], 1.09-2.71; reference mild/none]. Posthospitalization RBC transfusion rates were highest with severe anemia (25% vs 10% for mild/none; adjusted HR, 2.2; 95% CI, 1.5-3.3; P < .001). There were no significant differences in composite stroke/myocardial infarction, or mortality. RBC transfusion volumes did not modify anemia-outcome relationships. CONCLUSION Hospital discharge hemoglobin values for transfused surgical patients were not associated with hospital readmission rates except for those receiving postoperative intensive care. Further evaluation is warranted to understand downstream consequences of postsurgical anemia.
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Affiliation(s)
- Mitchell J Kerfeld
- Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Daryl J Kor
- Division of Critical Care Medicine, Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Ryan D Frank
- Department of Biomedical Statistics and Informatics, Mayo Clinic, Rochester, Minnesota, USA
| | - Andrew C Hanson
- Department of Biomedical Statistics and Informatics, Mayo Clinic, Rochester, Minnesota, USA
| | - Melissa A Passe
- Anesthesia Clinical Research Unit, Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Matthew A Warner
- Division of Critical Care Medicine, Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Rochester, Minnesota, USA
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Warner MA, Shore-Lesserson L, Shander A, Patel SY, Perelman SI, Guinn NR. Perioperative Anemia. Anesth Analg 2020; 130:1364-1380. [DOI: 10.1213/ane.0000000000004727] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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18
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Hensley NB, Frank SM, Prochaska MT. Intraoperative Transfusion Targets: Avoiding the Extremes. Anesth Analg 2020; 129:642-643. [PMID: 31425199 DOI: 10.1213/ane.0000000000004288] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Nadia B Hensley
- From the Department of Anesthesiology/Critical Care Medicine, The Johns Hopkins Medical Institutions, Baltimore, Maryland
| | - Steven M Frank
- Department of Anesthesiology/Critical Care Medicine, Johns Hopkins Health System Blood Management Program, Faculty, Armstrong Institute for Patient Safety and Quality, The Johns Hopkins Medical Institutions, Baltimore, Maryland
| | - Micah T Prochaska
- Section of Hospital Medicine, Department of Medicine, University of Chicago, Chicago, Illinois
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