scholarly journals Effectiveness of interventions for prevention of common infections in people who use opioids: a protocol for a systematic review of systematic reviews

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Irina Kudrina ◽  
Svetlana Puzhko ◽  
Kristian B. Filion ◽  
Genevieve Gore ◽  
Elena Paraskevopoulos ◽  
...  
Keyword(s):  
Systematic Review ◽  
Systematic Reviews ◽  
Opioid Use ◽  
Opioid Substitution Therapy ◽  
Level Of Evidence ◽  
Mortality And Morbidity ◽  
Exchange Programs ◽  
Social Interventions ◽  
The North ◽  
Increased Risk

Abstract Background The North American opioid crisis is driven by opioid-related mortality and morbidity, including opioid use-associated infections (OUAIs), resulting in a substantial burden for society. Users of legal and illegal opioids are at an increased risk of OUAIs compared to individuals not using opioids. As reported for hepatitis C virus (HCV), human immunodeficiency virus (HIV), bacterial, fungal, and other infections, OUAIs transmission and acquisition risks may be modifiable. Several systematic reviews (SRs) synthetized data regarding interventions to prevent infections in persons using drugs (e.g., opioid substitution therapy, needle and syringes exchange programs, psycho-social interventions); however, their conclusions varied. Therefore, SR of published SRs is needed to synthesize the highest level of evidence on the scope and effectiveness of interventions to prevent OUAIs in people using opioids legally or illegally. Methods We will comprehensively search for SRs in the PubMed, Embase, PsycINFO, Cochrane Database of Systematic Reviews, Epistemonikos, and Google Scholar databases from inception to November 2020. Data selection and extraction for each SR will be performed independently by two researchers, with disagreements resolved by consensus. All SRs regarding interventions with evaluated effectiveness to prevent OUAI in legal and/or illegal opioid users will be eligible. Risk of bias assessment will be performed using the AMSTAR2 tool. The results will be qualitatively synthesized, and a typology of interventions’ effectiveness with a statement on the strength of evidence for each category will be created. Discussion Our pilot search of PubMed resulted in 379 SRs analyzing the effectiveness of interventions to prevent HCV and HIV in persons who inject different types of drugs, including opioids. Of these 379 SRs, 8 evaluated primary studies where participants used opioids and would therefore be eligible for inclusion. The search results thus justify the application of SR of SRs approach. Comprehensive data on the scope and effectiveness of existing interventions to prevent OUAIs will help policy-makers to plan and implement preventive interventions and will assist clinicians in the guidance for their patients using opioids. Systematic review registration Registered in PROSPERO on 30 July 2020 (#195929).

scholarly journals Effectiveness of Interventions for Prevention of Common Infections in People Who Use Opioids: A Protocol for a Systematic Review of Systematic Reviews

2020 ◽  
Author(s):  
Irina Kudrina ◽  
Svetlana Puzhko ◽  
Kristian B. Filion ◽  
Genevieve Gore ◽  
Elena Paraskevopoulos ◽  
...  
Keyword(s):  
Systematic Reviews ◽  
Opioid Use ◽  
Opioid Substitution Therapy ◽  
Level Of Evidence ◽  
Mortality And Morbidity ◽  
Exchange Programs ◽  
Social Interventions ◽  
The North ◽  
Cochrane Database ◽  
Increased Risk

Abstract Background. The North American opioid crisis is driven by opioid-related mortality and morbidity, including opioid use-associated infections (OUAIs), resulting in a substantial burden for society. Users of legal and illegal opioids are at an increased risk of OUAIs compared to individuals not using opioids. As reported for hepatitis C virus (HCV), human immunodeficiency virus (HIV), bacterial, fungal, and other infections, OUAIs transmission and acquisition risks may be modifiable. Several systematic reviews (SRs) synthetized data regarding interventions to prevent infections in persons using drugs (e.g., opioid substitution therapy, needle and syringes exchange programs, psycho-social interventions); however, their conclusions varied. Therefore, SR of published SRs is needed to synthesize the highest level of evidence on the scope and effectiveness of interventions to prevent OUAIs in people using opioids legally or illegally. Methods. We will comprehensively search for SRs in the PubMed, Embase, PsycINFO, Cochrane Database of Systematic Reviews, Epistemonikos and Google Scholar databases from inception to November 2020. Data selection and extraction for each SR will be performed independently by two researchers, with disagreements resolved by consensus. All SRs regarding interventions with evaluated effectiveness to prevent OUAI in legal and/or illegal opioid users will be eligible. Risk of bias assessment will be performed using the AMSTAR2 tool. The results will be qualitatively synthesized, and a typology of interventions’ effectiveness with a statement on the strength of evidence for each category will be created. Discussion. Our pilot search of PubMed resulted in 379 SRs analyzing the effectiveness of interventions to prevent HCV and HIV in persons who inject different types of drugs, including opioids. Of these 379 SRs, eight evaluated primary studies where participants used opioids and would therefore be eligible for inclusion. The search results thus justify the application of SR of SRs approach. Comprehensive data on the scope and effectiveness of existing interventions to prevent OUAIs will help policy makers to plan and implement preventive interventions and will assist clinicians in the guidance for their patients using opioids. SR registration: Registered in PROSPERO on July 30, 2020 (#195929).

scholarly journals A Systematic Review of Randomized Trials of Long-Term Opioid Management for Chronic Non-Cancer Pain

2011 ◽  
Vol 3;14 (2;3) ◽  
pp. 91-121
Author(s):  
Laxmaiah Manchikanti
Keyword(s):  
Systematic Review ◽  
Cancer Pain ◽  
Systematic Reviews ◽  
Randomized Trials ◽  
Opioid Therapy ◽  
Functional Improvement ◽  
Controlled Trials ◽  
Chronic Opioid Therapy ◽  
Level Of Evidence

Background: Even though opioids have been used for pain for thousands of years, opioid therapy for chronic non-cancer pain is controversial due to concerns regarding the long-term effectiveness and safety, particularly the risk of tolerance, dependance, or abuse. While the debate continues, the use of chronic opioid therapy for chronic non-cancer pain has increased exponentially. Even though evidence is limited, multiple expert panels have concluded that chronic opioid therapy can be effective therapy for carefully selected and monitored patients with chronic non-cancer pain. Study Design: A systematic review of randomized trials of opioid management for chronic noncancer pain. Objective: The objective of this systematic review is to evaluate the clinical efficacy of opioids in the treatment of chronic non-cancer pain. Methods: A comprehensive evaluation of the literature relating to opioids in chronic non-cancer pain was performed. The literature was evaluated according to Cochrane review criteria for randomized controlled trials (RCTs) and Jadad criteria. A literature search was conducted by using PubMed, EMBASE, Cochrane library, ECRI Institute Library, U.S. Food and Drug Administration (FDA) website, U.S. National Guideline Clearinghouse (NGC), Database of Abstracts of Reviews of Effectiveness (DARE), clinical trials, systematic reviews and cross references from systematic reviews. The level of evidence was classified as good, fair, or poor based on the quality of evidence developed by the United States Preventive Services Task Force (USPSTF) and used by other systematic reviews and guidelines. Outcome Measures: Pain relief was the primary outcome measure. Other outcome measures were functional improvement, withdrawals, and adverse effects. Results: Based on the USPSTF criteria, the indicated level of evidence was fair for Tramadol in managing osteoarthritis. For all the drugs assessed, including Tramadol, for all other conditions, the evidence was poor based on either weak positive evidence, indeterminate evidence, or negative evidence. Limitations: A paucity of literature, specifically with follow-up beyond 12 weeks for all types of opioids with controlled trials for various chronic non-cancer pain conditions. Conclusions: This systematic review illustrated fair evidence for Tramadol in managing osteoarthritis with poor evidence for all other drugs and conditions. Thus, recommendations must be based on non-randomized studies. Key words: Chronic non-cancer pain, opioids, opioid efficacy, opioid effectiveness, significant pain relief, functional improvement, adverse effects, morphine, hydrocodone, hydromorphone, fentanyl, tramadol, buprenorphine, methadone, tapentadol, oxycodone, oxymorphone, systematic reviews, randomized trials

scholarly journals Effectiveness and safety of inpatient versus extended venous thromboembolism (VTE) prophylaxis with heparin following major pelvic surgery for malignancy: protocol for a systematic review

2019 ◽  
Vol 8 (1) ◽  
Author(s):  
Bridget Heijkoop ◽  
Natalie Parker ◽  
George Kiroff ◽  
Daniel Spernat
Keyword(s):  
Systematic Review ◽  
Venous Thromboembolism ◽  
Systematic Reviews ◽  
Pelvic Surgery ◽  
Current Evidence ◽  
Cochrane Library ◽  
Vte Prophylaxis ◽  
Optimum Duration ◽  
Number Of Patients ◽  
Increased Risk

Abstract Background Venous thromboembolism (VTE) is a common postoperative complication associated with significant morbidity and mortality. The use of prophylactic heparin postoperatively reduces this risk, and the use of extended duration prophylaxis is becoming increasingly common. Malignancy and pelvic surgery both independently further increase the risk of postoperative VTE and patients undergoing major pelvic surgery for malignancy are at particularly high risk of VTE. However, the optimum duration of prophylaxis specifically in this population currently remains unclear. Methods We will conduct a systematic review of literature in accordance with the Cochrane Handbook for Systematic Reviews of Interventions (Higgins JPT, Green S. Cochrane Handbook for Systematic Reviews of Interventions version 5.1.0.,2011) to evaluate current evidence of the effectiveness and safety of inpatient versus extended VTE prophylaxis with heparin (all forms) following major pelvic surgery for malignancy. We will search PubMed, EMBASE, and the Cochrane Library. Regarding safety, Food and Drug Administration (FDA), and Therapeutic Goods Administration (TGA) websites will be searched, including all levels of evidence. Results will be the postoperative timeframe in which a VTE event can be considered to have been provoked by the surgery, and the number of patients needed to treat with both inpatient and extended prophylaxis to prevent a VTE event in this timeframe, comparing these to determine if there is a significant benefit from extended prophylaxis. Discussion This systematic review will aim to identify the postoperative period in which patients undergoing major pelvic surgery for malignancy are at further increased risk of VTE as a result of their surgery and the optimum duration of heparin VTE prophylaxis with heparin to reduce this risk. Determining this will allow evidence-based recommendations to be made for the optimum duration of heparin VTE prophylaxis post major pelvic surgery for malignancy, leading to improved standards of care that are consistent between different providers and institutions. Systematic review registration In accordance with guidelines, our systematic review was submitted to PROSPERO for consideration of registration on 16/12/17 and was registered on 12/1/18 with the registration number CRD42018068961, and it was last updated on December 1, 2018.

scholarly journals Nanoparticle-Based Chemotherapy Formulations for Head and Neck Cancer: A Systematic Review and Perspectives

Nanomaterials ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 1938
Author(s):  
Jefferson Muniz de Lima ◽  
Paulo Rogerio Bonan ◽  
Danyel Elias da Cruz Perez ◽  
Michael Hier ◽  
Moulay A. Alaoui-Jamali ◽  
...  
Keyword(s):  
Systematic Review ◽  
Head And Neck Cancer ◽  
Side Effects ◽  
Head And Neck ◽  
Neck Cancer ◽  
Meta Analysis ◽  
Basic Research ◽  
Cochrane Central Register ◽  
Level Of Evidence ◽  
Mortality And Morbidity

Head and neck cancer (HNC) is a complex and heterogeneous disease associated with high mortality and morbidity worldwide. Standard therapeutic management of advanced HNC, which is based on radiotherapy often combined with chemotherapy, has been hampered by severe long-term side effects. To overcome these side effects, tumor-selective nanoparticles have been exploited as a potential drug delivery system to improve HNC therapy. A combination of MEDLINE, EMBASE, Cochrane Oral Health Group’s Trials Register, Cochrane Central Register of Controlled Trials (CENTRAL) and ClinicalTrials.gov from inception up to June 2020 was used for this systematic review. A total of 1747 published manuscripts were reviewed and nine relevant references were retrieved for analysis, while eight of them were eligible for meta-analysis. Based on these studies, the level of evidence about the efficacy of nanoformulation for HNC therapy on tumor response and adverse side effects (SAE) was low. Even though basic research studies have revealed a greater promise of nanomaterial to improve the outcome of cancer therapy, none of them were translated into clinical benefits for HNC patients. This systematic review summarized and discussed the recent progress in the development of targeted nanoparticle approaches for HNC management, and open-up new avenues for future perspectives.

scholarly journals Abordagem aos Doentes com Intolerância às Estatinas: Revisão Baseada na Evidência

2020 ◽  
Vol 33 (1) ◽  
pp. 49 ◽  
Author(s):  
Joana Tendais Almeida ◽  
Ana Luísa Esteves ◽  
Filipa Martins ◽  
Isabel Palma
Keyword(s):  
Systematic Reviews ◽  
Patient Adherence ◽  
Management Strategies ◽  
Lipid Lowering ◽  
Lipid Lowering Therapy ◽  
Level Of Evidence ◽  
Mortality And Morbidity ◽  
Number Of Patients ◽  
Pubmed Database ◽  
Meta Analyses

Introduction: Statins are among the most effective drugs in lowering cholesterol levels and, consequently, in reducing cardiovascular mortality and morbidity. Although generally well tolerated, they have adverse effects that may reduce patient adherence to therapy. The objective of this evidence-based review is to summarize the evidence on the effectiveness of alternative management strategies in patients with intolerance to statins.Material and Methods: A literature search including clinical practice guidelines, systematic reviews and meta-analyses was conducted, in January 2017, in major international databases, and considered articles published in the last 10 years. The search was complemented with research papers published over the past three years and found in the PubMed database. The level of evidence and strength of recommendation were determined using the scale Strength of Recommendation Taxonomy - SORT.Results: We included eight guidelines, six systematic reviews and one research paper.Discussion: The strategies proposed by the different studies vary according to the severity of symptoms of intolerance including maintenance of the statin therapy (dose reduction, addition of a statin of equal or lower intensity or alternate days’ uptake) and lipid-lowering therapy with other drugs (ezetimibe monotherapy or association with statin tolerated dose). Supplementation with coenzyme Q10 or vitamin D, in order to improve adherence to treatment with statins, is not recommended.Conclusion: This review highlights some alternatives to address patients’ intolerance to statins; however, these are mostly based on recommendations with low to moderate evidence. Therefore, further research with randomized studies involving greater number of patients is required, in order to obtain a more robust recommendation.

scholarly journals Safety of Influenza A H1N1pdm09 Vaccines: An Overview of Systematic Reviews

2021 ◽  
Vol 12 ◽  
Author(s):  
Lene Kristine Juvet ◽  
Anna Hayman Robertson ◽  
Ida Laake ◽  
Siri Mjaaland ◽  
Lill Trogstad
Keyword(s):  
Systematic Review ◽  
Adverse Events ◽  
Systematic Reviews ◽  
Pregnancy Outcomes ◽  
Influenza A ◽  
Demyelinating Diseases ◽  
Short Term ◽  
Serious Adverse Events ◽  
Increased Risk ◽  
Influenza A H1n1

BackgroundIn 2009, a new influenza A H1N1 virus emerged causing a global pandemic. A range of monovalent influenza A H1N1pdm09 vaccines with or without adjuvants were developed. After the mass vaccination campaigns safety concerns related to H1N1pdm09 vaccines were reported. More than a decade later, reported AEFIs are still under scrutiny. We performed a systematic review aiming to synthesize the evidence on the safety of the H1N1pdm09 vaccines on reported outcomes from existing systematic reviews.MethodsFour electronic databases, PubMed, EMBASE, Epistimonikos and the Cochrane Database of Systematic Reviews were searched for articles on H1N1pdm09 vaccination published from 2009 to January 2021. Systematic reviews assessing short- or long-term adverse events after H1N1pdm09 vaccination were considered for inclusion. Data was extracted from all selected reviews. Outcomes were grouped and results from each included review were presented narratively and in tables.Results16 systematic reviews met the inclusion criteria. Reported outcomes were short-term events (3 reviews), fetal/pregnancy outcomes (8 reviews), Guillain-Barré syndrome (GBS) (4 reviews), narcolepsy (2 reviews) demyelinating diseases (1 review based on one study only) and inflammatory bowel disease (IBD) (1 review). Short-term serious adverse events were rare, 3 cases amongst 16725 subjects in 18 randomized controlled trials (0.018%). No deaths were reported. The risks of local events were generally higher for adjuvanted vaccines as compared to unadjuvanted vaccines. Maternal H1N1pdm09 vaccination in any trimester was not associated with an increase in preterm birth, small for gestational age, congenital malformations or fetal death. For GBS, results were conflicting. The main systematic review on narcolepsy found a 5-14-fold increased risk in children, and a 2-7- fold increased risk in adults after vaccination with Pandemrix. The attributable risk of narcolepsy one year after vaccination was 1 case per 18 400 vaccine doses in children/adolescents, and 1 case per 181 000 vaccine doses in adults.ConclusionAdjuvanted vaccines had more local but not serious adverse events compared to unadjuvanted vaccines. Vaccination with Pandemrix was strongly associated with narcolepsy, particularly in children. No increased risks of pregnancy outcomes were seen after pandemic vaccination. The findings on GBS were inconclusive.

scholarly journals The role of preoperative opioid use in shoulder surgery—A systematic review

2022 ◽  
pp. 175857322110701
Author(s):  
Omar A Al-Mohrej ◽  
Carlos Prada ◽  
Kim Madden ◽  
Harsha Shanthanna ◽  
Timothy Leroux ◽  
...  
Keyword(s):  
Systematic Review ◽  
Range Of Motion ◽  
Data Extraction ◽  
Shoulder Surgery ◽  
Orthopedic Procedures ◽  
Opioid Use ◽  
Level Of Evidence ◽  
Functional Scores ◽  
Search Data ◽  
The Impact

Background Emerging evidence suggests preoperative opioid use may increase the risk of negative outcomes following orthopedic procedures. This systematic review evaluated the impact of preoperative opioid use in patients undergoing shoulder surgery with respect to preoperative clinical outcomes, postoperative complications, and postoperative dependence on opioids. Methods EMBASE, MEDLINE, CENTRAL, and CINAHL were searched from inception to April, 2021 for studies reporting preoperative opioid use and its effect on postoperative outcomes or opioid use. The search, data extraction and methodologic assessment were performed in duplicate for all included studies. Results Twenty-one studies with a total of 257,301 patients were included in the final synthesis. Of which, 17 were level III evidence. Of those, 51.5% of the patients reported pre-operative opioid use. Fourteen studies (66.7%) reported a higher likelihood of opioid use at follow-up among those used opioids preoperatively compared to preoperative opioid-naïve patients. Eight studies (38.1%) showed lower functional measurements and range of motion in opioid group compared to the non-opioid group post-operatively. Conclusion Preoperative opioid use in patients undergoing shoulder surgeries is associated with lower functional scores and post-operative range of motion. Most concerning is preoperative opioid use may predict increased post-operative opioid requirements and potential for misuse in patients. Level of evidence Level IV, Systematic review.

scholarly journals Are Early Warning Scores Useful Predictors for Mortality and Morbidity in Hospitalised Acutely Unwell Older Patients? A Systematic Review

2018 ◽  
Vol 7 (10) ◽  
pp. 309 ◽  
Author(s):  
Romesh Jayasundera ◽  
Mark Neilly ◽  
Toby Smith ◽  
Phyo Myint
Keyword(s):  
Systematic Review ◽  
Early Warning ◽  
Length Of Hospital Stay ◽  
Predictive Ability ◽  
Risk Of Bias ◽  
Future Research ◽  
Mortality And Morbidity ◽  
Icu Admission ◽  
Increased Risk ◽  
Early Warning Scores

Background: Early warning scores (EWSs) are used to identify deteriorating patients for appropriate interventions. We performed a systematic review to examine the usefulness of EWSs in predicting inpatient mortality and morbidity (transfer to higher-level care and length of hospital stay) in older people admitted to acute medical units with sepsis, acute cardiovascular events, or pneumonia. Methods: A systematic review of published and unpublished databases was conducted. Cochrane′s tool for assessing Risk of Bias in Non-Randomised Studies—of Interventions (ROBINS-I) was used to appraise the evidence. A narrative synthesis was performed due to substantial heterogeneity. RESULTS: Five studies (n = 12,057) were eligible from 1033 citations. There was an overall “moderate” risk of bias for all studies. The predictive ability of EWSs regarding mortality was reported in one study (n = 274), suggesting EWSs were better at predicting survival, (negative predictive value >90% for all scores). Three studies (n = 1819) demonstrated a significant association between increasing modified EWSs (MEWSs) and increased risk of mortality. Hazards ratios for a composite death/intensive care (ICU) admission with MEWSs ≥5 were significant in one study (p = 0.003). Two studies (n = 1421) demonstrated that a MEWS ≥6 was associated with 21 times higher probability of mortality (95% Confidence Interval (CI): 2.71–170.57) compared with a MEWS ≤1. A MEWS of ≥5 was associated with 22 times higher probability of mortality (95% CI: 10.45–49.16). Conclusion: Increasing EWSs are strongly associated with mortality and ICU admission in older acutely unwell patients. Future research should be targeted at better understanding the usefulness of high and increasing EWSs for specific acute illnesses in older adults.

scholarly journals Opioid Use After Common Sports Medicine Procedures: A Systematic Review

2020 ◽  
Vol 12 (3) ◽  
pp. 225-233 ◽  
Author(s):  
Ujash Sheth ◽  
Mitesh Mehta ◽  
Fernando Huyke ◽  
Michael A. Terry ◽  
Vehniah K. Tjong
Keyword(s):  
Systematic Review ◽  
Sports Medicine ◽  
Management Strategies ◽  
Opioid Consumption ◽  
Opioid Use ◽  
Prescribing Practices ◽  
Eligibility Criteria ◽  
Level Of Evidence ◽  
Opioid Prescribing ◽  
Arthroscopic Procedures

Context: The prescription of opioids after elective surgical procedures has been a contributing factor to the current opioid epidemic in North America. Objective: To examine the opioid prescribing practices and rates of opioid consumption among patients undergoing common sports medicine procedures. Data Sources: A systematic review of the electronic databases EMBASE, MEDLINE, and PubMed was performed from database inception to December 2018. Study Selection: Two investigators independently identified all studies reporting on postoperative opioid prescribing practices and consumption after arthroscopic shoulder, knee, or hip surgery. A total of 119 studies were reviewed, with 8 meeting eligibility criteria. Study Design: Systematic review. Level of Evidence: Level 4. Data Extraction: The quantity of opioids prescribed and used were converted to milligram morphine equivalents (MMEs) for standardized reporting. The quality of each eligible study was evaluated using the Methodological Index for Non-Randomized Studies. Results: A total of 8 studies including 816 patients with a mean age of 43.8 years were eligible for inclusion. A mean of 610, 197, and 613 MMEs were prescribed to patients after arthroscopic procedures of the shoulder, knee, and hip, respectively. At final follow-up, 31%, 34%, and 64% of the prescribed opioids provided after shoulder, knee, and hip arthroscopy, respectively, still remained. The majority of patients (64%) were unaware of the appropriate disposal methods for surplus medication. Patients undergoing arthroscopic rotator cuff repair had the highest opioid consumption (471 MMEs), with 1 in 4 patients receiving a refill. Conclusion: Opioids are being overprescribed for arthroscopic procedures of the shoulder, knee, and hip, with more than one-third of prescribed opioids remaining postoperatively. The majority of patients are unaware of the appropriate disposal techniques for surplus opioids. Appropriate risk stratification tools and evidence-based recommendations regarding pain management strategies after arthroscopic procedures are needed to help curb the growing opioid crisis.

scholarly journals Spine Surgery and Preoperative Hemoglobin, Hematocrit, and Hemoglobin A1c: A Systematic Review

2021 ◽  
pp. 219256822097982
Author(s):  
Krishna V. Suresh ◽  
Kevin Wang ◽  
Ishaan Sethi ◽  
Bo Zhang ◽  
Adam Margalit ◽  
...  
Keyword(s):  
Systematic Review ◽  
Postoperative Complications ◽  
Spine Surgery ◽  
Postoperative Infection ◽  
Lumbar Fusion ◽  
Adult Patients ◽  
Cochrane Library ◽  
Cardiac Events ◽  
Level Of Evidence ◽  
Increased Risk

Study Design: Systematic review. Objectives: Synthesize previous studies evaluating clinical utility of preoperative Hb/Hct and HbA1c in patients undergoing common spinal procedures: anterior cervical discectomy and fusion (ACDF), posterior cervical fusion (PCF), posterior lumbar fusion (PLF), and lumbar decompression (LD). Methods: We queried PubMed, Embase, Cochrane Library, and Web of Science for literature on preoperative Hb/Hct and HbA1c and post-operative outcomes in adult patients undergoing ACDF, PCF, PLF, or LD surgeries. Results: Total of 4,307 publications were assessed. Twenty-one articles met inclusion criteria. PCF and ACDF: Decreased preoperative Hb/Hct were significant predictors of increased postoperative morbidity, including return to operating room, pulmonary complications, transfusions, and increased length of stay (LOS). For increased HbA1c, there was significant increase in risk of postoperative infection and cost of hospital stay. PLF: Decreased Hb/Hct was reported to be associated with increased risk of postoperative cardiac events, blood transfusion, and increased LOS. Elevated HbA1c was associated with increased risk of infection as well as higher visual analogue scores (VAS) and Oswestry disability index (ODI) scores. LD: LOS and total episode of care cost were increased in patients with preoperative HbA1c elevation. Conclusion: In adult patients undergoing spine surgery, preoperative Hb/Hct are clinically useful predictors for postoperative complications, transfusion rates, and LOS, and HbA1c is predictive for postoperative infection and functional outcomes. Using Hct values <35-38% and HbA1c >6.5%-6.9% for identifying patients at higher risk of postoperative complications is most supported by the literature. We recommend obtaining these labs as part of routine pre-operative risk stratification. Level of Evidence: III

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