The international normalised ratio predicts perioperative complications in revision total hip arthroplasty

2020 ◽  
pp. 112070002097397
Author(s):  
Nicholas R Arnold ◽  
Linsen T Samuel ◽  
Jaret M Karnuta ◽  
Alexander J Acuña ◽  
Atul F Kamath

Background: Standard preoperative protocols in total joint arthroplasty utilise the international normalised ratio (INR) to determine patient coagulation profiles. However, the relevance of preoperative INR values in joint arthroplasty remains controversial. Therefore, we examined (1) the relationship between preoperative INR values and various outcome measures, including, but not limited to: surgical site complications, medical complications, bleeding, number of readmissions, and mortality. Additionally, we sought to determine (2) specific INR values associated with these complications and (3) cutoff INR levels which correlated with specific outcomes. We additionally applied these analyses to (4) examine the relationship between INR and length-of-stay (LOS). Methods: The American College of Surgeons National Surgical Quality Improvement Program database (ACS-NSQIP) was queried for rTHA procedures performed between 2006 and 2017. INR ranges were used to stratify cohorts: ⩽1.0, 1.0–⩽1.25, 1.25–⩽1.5, >1.5. INR values were determined using receiver operating characteristics (ROC) curves for each outcome of interest. Optimal cutoff INR values for each outcome were then obtained using univariate/multivariate models. 2012 patients who underwent rTHA met inclusion criteria. Results: Patients with progressively higher INR values had a significantly different risk of mortality within 30 days ( p = 0.005), bleeding requiring transfusion ( p < 0.001), sepsis ( p = 0.002), stroke ( p < 0.001), failure to wean from ventilator within 48 hours ( p = 0.001), readmission ( p = 0.01), and hospital length of stay ( p < 0.001). Similar results were obtained when utilising optimal INR cutoff values. When correcting for other factors, the following poor outcomes were significantly associated with the respective INR cutoff values (Estimate, 95% CI, p-value): LOS >4 days (1.67, 1.34–2.08, p < 0.001), bleeding requiring transfusion (1.65, 1.30–2.09, p < 0.001), sepsis (2.15, 1.11–4.17, p = 0.022), and any infection (1.82, 1.01–3.29, p = 0.044). Conclusions: Our analysis illustrates a direct relationship between specific preoperative INR levels and poor outcomes following rTHA, including increased LOS, transfusion requirements and infection. Therefore, current INR guideline targets may need to be re-examined when optimising patients for revision arthroplasty.

2016 ◽  
Vol 82 (3) ◽  
pp. 281-288 ◽  
Author(s):  
Brian R. Englum ◽  
Xuan Hui ◽  
Cheryl K. Zogg ◽  
Muhammad Ali Chaudhary ◽  
Cassandra Villegas ◽  
...  

Previous research has demonstrated that nonclinical factors are associated with differences in clinical care, with uninsured patients receiving decreased resource use. Studies on trauma populations have also shown unclear relationships between insurance status and hospital length of stay (LOS), a commonly used metric for evaluating quality of care. The objective of this study is to define the relationship between insurance status and LOS after trauma using the largest available national trauma dataset and controlling for significant confounders. Data from 2007 to 2010 National Trauma Data Bank were used to compare differences in LOS among three insurance groups: privately insured, publically insured, and uninsured trauma patients. Multivariable regression models adjusted for potential confounding due to baseline differences in injury severity and demographic and clinical factors. A total of 884,493 patients met the inclusion criteria. After adjusting for the influence of covariates, uninsured patients had significantly shorter hospital stays (0.3 days) relative to privately insured patients. Publicly insured patients had longer risk-adjusted LOS (0.9 days). Stratified differences in discharge disposition and injury severity significantly altered the relationship between insurance status and LOS. In conclusion, this study elucidates the association between insurance status and hospital LOS, demonstrating that a patient's ability to pay could alter LOS in acute trauma patients. Additional research is needed to examine causes and outcomes from these differences to increase efficiency in the health care system, decrease costs, and shrink disparities in health outcomes.


2017 ◽  
Vol 32 (3) ◽  
pp. 714-718 ◽  
Author(s):  
Jarrett Williams ◽  
Benjamin S. Kester ◽  
Joseph A. Bosco ◽  
James D. Slover ◽  
Richard Iorio ◽  
...  

Author(s):  
Jessica L. Churchill ◽  
Linsen T. Samuel ◽  
J. M. Karnuta ◽  
Alexander J. Acuña ◽  
Atul F. Kamath

AbstractThe purpose of this study was to examine the relationship between elevated preoperative international normalized ratio (INR) and (1) mortality, (2) postoperative bleeding, and (3) other postoperative complications in a national cohort of patients who underwent revision total knee arthroplasty (rTKA). The American College of Surgeons National Surgical Quality Improvement Program was queried for rTKA procedures conducted between 2006 and 2017. Cohorts were based on INR ranges: <1, 1 < INR ≤ 1.25, 1.25 < INR ≤ 1.5, and >1.5. Univariate/multivariate statistics were calculated to analyze associations between INR value and designated covariates. These statistics were additionally applied to optimal cutoff values of INR calculated using a receiver operating characteristics curve. The final cohort consisted of 1,676 patients. Progressively higher INR values were associated with an increased risk of mortality within 30 days (p < 0.006), bleeding requiring transfusion (p < 0.001), sepsis (p < 0.001), return to the operating room (Odds Ratio [OR], p = 0.011), reintubation (p < 0.001), pneumonia (p < 0.001), failure to wean from mechanical ventilation ≤48 hours (p < 0.001), acute renal failure (p = 0.001), and hospital length of stay (LOS). Statistically significant associations were similarly seen when calculated optimal INR values were used. Optimal INR turn point was found to be associated with a significant increased risk of long LOS (optimal INR = 1.03, OR: 1.7, 95% confidence interval [CI]: 1.33–2.18; p < 0.001) and a significant decreased risk of bleeding requiring transfusion (INR = 1.005, OR: 0.732, 95% CI: 0.681–0.786; p < 0.001). High preoperative INR values were independently and significantly associated with an increased risk of multiple postoperative complications. Current guidelines for INR <1.5 should be reassessed for patients undergoing rTKA.


Circulation ◽  
2014 ◽  
Vol 130 (suppl_2) ◽  
Author(s):  
Hassan Khan ◽  
Andreas P Kalogeropoulos ◽  
Andrew P Ambrosy ◽  
Aldo P Maggioni ◽  
Faiez Zannad ◽  
...  

Background: Previous reports have provided conflicting data regarding the relationship between length of stay (LOS) and subsequent readmissions risk among patients hospitalized for heart failure (HF). Methods: We performed a post-hoc analysis of the Efficacy of Vasopressin Antagonism in Heart Failure Outcome Study with Tolvaptan (EVEREST) trial to evaluate the differences in LOS overall and between geographical regions (North America, South America, Western Europe, and Eastern Europe) in association with all-cause and cause specific (HF, cardiovascular [CV] non-HF and non-CV) readmissions within 30 days of discharge after HF hospitalization. Results: The median (IQR) LOS among the 4,133 patients enrolled from 20 countries across 359 sites was 8 (4-11) days. The 30-day readmissions rates were 15.6% (95% confidence intervals [CI] 14.6-16.8) for all-cause; 5.5% (95%CI 4.9-6.3) for HF; 4.4% (95%CI 3.8-5.1) for CV non-HF and 5.8% (95%CI 5.1-6.6) for non-CV readmissions. Overall there was a positive correlation between LOS and all cause readmissions (r=0.09; 95%CI 0.06-0.12). The adjusted odds ratio for the top (>14 days) versus the bottom (<3 days) quintile for LOS was 1.39 (95%CI 0. 92-2.11) for all-cause; 0.43 (95%CI 0.24-0.79) for HF; 2.99 (95%CI 1.49-6.02) for CV non-HF and 1.72 (95%CI 1.05-2.81) for non-CV readmissions, Figure 1. These findings remained consistent in analyses within patient characteristic subgroups and also largely within regions. Conclusions: Longer hospital LOS was associated with a higher risk for all-cause, CV non-HF, and non-CV readmissions, and with a lower risk of HF readmissions. These results may have important bearing in developing clinical and research strategies to reduce readmissions.


Author(s):  
Efthymios Papadopoulos ◽  
Priya Brahmbhatt ◽  
Shabbir M.H. Alibhai ◽  
George A. Tomlinson ◽  
Andrew G. Matthew ◽  
...  

Background: The relationship between preoperative physical activity (PA) and hospital length of stay (LOS) following radical prostatectomy (RP) is poorly understood. In addition, the relationship between PA and the American Society of Anesthesiologists Physical Status score (ASA PS), an established prognosticator of surgical risk, has not been studied. The authors assessed the relationship between leisure-time PA (LTPA), ASA PS, and LOS in individuals undergoing RP. Methods: This retrospective cohort study was conducted using data from an institutional database. Ordinal logistic regression was used to assess the relationship between preoperative LTPA and physical status as indicated by the ASA PS. Binary logistic regression was used to assess the relationship between preoperative LTPA and LOS. Results: A sample of 1064 participants were included in the analyses. The participants in the highest preoperative LTPA quartile had 45% reduced odds (P = .015) of a worse ASA PS classification compared with participants in the lowest quartile. The participants engaging in vigorous LTPA preoperatively had 35% lower odds (P = .014) of a >2-day LOS following RP compared with participants who were not engaging in preoperative vigorous LTPA. Conclusions: Our findings suggest that total and vigorous preoperative LTPA is associated with improved preoperative American Society of Anesthesiologists scores and LOS following RP, respectively.


2018 ◽  
Vol 24 (1) ◽  
pp. 117-124 ◽  
Author(s):  
Risa L. Wong ◽  
Areej El‐Jawahri ◽  
Sara M. D'Arpino ◽  
Charn‐Xin Fuh ◽  
P. Connor Johnson ◽  
...  

2017 ◽  
Vol 8 (3) ◽  
pp. 266-272 ◽  
Author(s):  
John Di Capua ◽  
Sulaiman Somani ◽  
Nahyr Lugo-Fagundo ◽  
Jun S. Kim ◽  
Kevin Phan ◽  
...  

Study Design: Retrospective cohort study. Objectives: Adult spinal deformity (ASD) surgery encompasses a wide variety of spinal disorders and is associated with a morbidity rate between 20% and 80%. The utilization of spinal surgery has increased and this trend is expected to continue. To effectively deal with an increasing patient volume, identifying variables associated with patient discharge destination can expedite placement and reduce length of stay. Methods: The 2013-2014 American College of Surgeons National Surgical Quality Improvement Program database was queried using Current Procedural Terminology and International Classification of Diseases, Ninth Revision diagnosis codes relevant to ASD. Patients were divided based on discharge destination. Bivariate and multivariate logistic regression analyses were employed to identify predictors for patient discharge destination and hospital length of stay. Results: A total of 4552 patients met inclusion criteria, of which 1102 (24.2%) had non-home discharge. Multivariate regression revealed total relative value unit (odds ratio [OR] = 1.01, 95% confidence interval [CI] = 1.00-1.01); female sex (OR = 1.54, 95% CI = 1.32-1.81); American Indian, Alaska Native, Asian, Native Hawaiian, or Pacific Islander versus black race (OR = 0.52, 95% CI = 0.35-0.78, P = .002); age ≥65 years (OR = 3.72, 95% CI = 3.19-4.35); obesity (OR = 1.18, 95% CI = 1.01-1.38, P = .034); partially/totally functionally dependent (OR = 2.11, 95% CI = 1.49-2.99); osteotomy (OR = 1.42, 95% CI = 1.12-1.80, P = .004) pelvis fixation (OR = 2.38, 95% CI = 1.82-3.11); operation time ≥4 hours (OR = 1.74, 95% CI = 1.47-2.05); recent weight loss (OR = 7.66, 95% CI = 1.52-38.65; P = .014); and American Society of Anesthesiologists class ≥3 (OR = 1.80, 95% CI = 1.53-2.11) as predictors of non-home discharge. P values were <.001 unless otherwise noted. Additionally, multivariate regression found non-home discharge to be a significant variable in prolonged length of stay. Conclusions: The authors suggest these results can be used to inform patients preoperatively of expected discharge destination, anticipate patient discharge needs postoperatively, and reduce health care costs and morbidity associated with prolonged LOS.


2020 ◽  
Vol 10 (4) ◽  
pp. 250-256
Author(s):  
J. Tyler Haller ◽  
Keaton Smetana ◽  
Michael J. Erdman ◽  
Todd A. Miano ◽  
Heidi M. Riha ◽  
...  

Background and Purpose: While an association between hyperchloremia and worse outcomes, such as acute kidney injury and increased mortality, has been demonstrated in hemorrhagic stroke, it is unclear whether the same relationship exists after acute ischemic stroke. This study aims to determine the relationship between moderate hyperchloremia (serum chloride ≥115 mmol/L) and acute kidney injury in patients with ischemic stroke. Methods: This is a multicenter, retrospective, propensity-matched cohort study of adults admitted for acute ischemic stroke. The primary objective was to determine the relationship between moderate hyperchloremia and acute kidney injury, as defined by the Acute Kidney Injury Network criteria. Secondary objectives included mortality and hospital length of stay. Results: A total of 407 patients were included in the unmatched cohort (332 nonhyperchloremia and 75 hyperchloremia) and 114 patients (57 in each group) were matched based upon propensity scores. In the matched cohort, hyperchloremia was associated with an increased risk of acute kidney injury (relative risk 1.91 [95% confidence interval 1.01-3.59]) and a longer hospital length of stay (16 vs 12 days; P = .03). Mortality was higher in the hyperchloremia group (19.3% vs 10.5%, P = .19), but this did not reach statistical significance. Conclusions: In this study, hyperchloremia after ischemic stroke was associated with increased rates of acute kidney injury and longer hospital length of stay. Further research is needed to determine which interventions may increase chloride levels in patients with acute ischemic stroke and the association between hyperchloremia and clinical outcomes.


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