1.
Risk factors for transfusion-related acute lung injury
Hu L, Wang B, Jiang Y, Zhu B, Wang C, Yu Q, Hou W, Xia Z, Wu G, Sun Y
Respiratory care. 2021
-
-
-
Free full text
-
Editor's Choice
Abstract
Background: Until now, transfusion-related acute lung injury (TRALI) has been considered to be the leading cause of blood transfusion-related diseases and death. And there is no clinically effective treatment plan for TRALI. The aim of this study was to systematically summarize the literature on risk factors for TRALI in critical patients.Methods: Electronic searches (up to March 2020) were performed in the Cochrane Library, Web of Knowledge, Embase, and PubMed databases. We included studies reporting on the risk factors of TRALI for critical patients and extracted the risk factors. Finally, thirteen studies met the inclusion criteria.Results: We summarized and analyzed the potential risk factors of TRALI for critical patients in 13 existing studies. The host-related factors were age (odds ratio (OR) [95% confidence interval] = 1.16 [1.08-1.24]), female sex (OR = 1.26 [1.16-1.38]), tobacco use status (OR = 3.82 [1.91-7.65]), chronic alcohol abuse (OR = 3.82 [2.97-26.83]), positive fluid balance (OR = 1.24 [1.08-1.42]), shock before transfusion (OR = 4.41 [2.38-8.20]), and ASA score of the recipients (OR = 2.72 [1.43-5.16]). The transfusion-related factors were the number of transfusions (OR = 1.40 [1.14-1.72]) and fresh frozen plasma (FFP) units (OR = 1.21 [1.01-1.46]). The device-related factor was mechanical ventilation (OR = 4.13 [2.20-7.76]).Conclusions: The risk factors for TRALI in this study included Number of transfusions and FFP units were positively correlated with TRALI. Age, female sex, tobacco use, chronic alcohol abuse, positive fluid balance, shock before transfusion, ASA score and mechanical ventilation may be potential risk factors for TRALI. Our study suggests that host-related risk factors may play a more important role in the occurrence and development of TRALI than blood transfusion-related risk factors.
PICO Summary
Population
Critical care patients (13 studies).
Intervention
Systematic review on the risk factors for transfusion-related acute lung injury (TRALI).
Comparison
Outcome
The host-related factors were age, female sex, tobacco use status, chronic alcohol abuse, positive fluid balance, shock before transfusion, and ASA score of the recipients. The transfusion-related factors were the number of transfusions and fresh frozen plasma units. The device-related factor was mechanical ventilation.
2.
Intravenous iron therapy for patients with preoperative iron deficiency or anaemia undergoing cardiac surgery reduces blood transfusions: a systematic review and meta-analysis
Gupta S, Panchal P, Gilotra K, Wilfred AM, Hou W, Siegal D, Whitlock RP, Belley-Cote EP
Interact Cardiovasc Thorac Surg. 2020
-
-
-
Full text
-
Editor's Choice
Abstract
OBJECTIVES The benefits of preoperative intravenous (IV) iron treatment in cardiac surgery patients with preoperative anaemia or iron deficiency have not been well-established. We performed a systematic review and meta-analysis to determine the effects of treating preoperative anaemia or iron deficiency with IV iron in adult cardiac surgery patients. METHODS We searched Cochrane Central Register of Controlled Trials, Medical Literature Analysis and Retrieval Systems Online and Excerpta Medica Database for randomized controlled trials (RCTs) and observational studies comparing IV iron to oral iron or no iron. We performed title and abstract, full-text screening, data extraction and risk of bias assessment independently and in duplicate. We pooled data using a random effects model and evaluated the overall quality of evidence. RESULTS We identified 4 RCTs and 7 observational studies. Pooled data from observational studies suggested a benefit of IV iron compared to no iron on mortality [relative risk 0.39, 95% confidence interval (CI) 0.23-0.65; P < 0.001, very low quality], units transfused per patient (mean difference -1.22, 95% CI -1.85 to -0.60; P < 0.001, very low quality), renal injury (relative risk 0.50, 95% CI 0.36-0.69; P < 0.001, very low quality) and hospital length of stay (mean difference -4.24 days, 95% CI -6.86 to -1.63; P = 0.001, very low quality). Pooled data from RCTs demonstrated a reduction in the number of patients transfused with IV iron compared to oral or no iron (relative risk 0.81, 95% CI 0.70-0.94; P = 0.005, moderate quality). The pooled estimates of effect from RCTs for mortality, hospital length of stay, units transfused per patient and renal injury were consistent in direction with observational studies. CONCLUSIONS This meta-analysis suggests that IV iron improves postoperative morbidity in adult cardiac surgery patients with preoperative anaemia or iron deficiency. A large, rigorous, placebo-controlled, double-blinded, multicentre trial is needed to clarify the role of IV iron in this patient population. CLINICAL TRIAL REGISTRATION International prospective register of systematic reviews ID Number CRD42019122844.
PICO Summary
Population
Adult cardiac surgery patients with preoperative anaemia or iron deficiency (11 studies, n= 1657).
Intervention
Intravenous (IV) iron treatment.
Comparison
Oral iron or no iron.
Outcome
Pooled data from observational studies suggested a benefit of IV iron compared to no iron on mortality, units transfused per patient, renal injury and hospital length of stay. Pooled data from randomised controlled trials (RCTs) demonstrated a reduction in the number of patients transfused with IV iron compared to oral or no iron. The pooled estimates of effect from RCTs for mortality, hospital length of stay, units transfused per patient and renal injury were consistent in direction with observational studies.