scholarly journals Kinetics of troponin I in patients with myocardial injury after noncardiac surgery

2017 ◽  
Vol 55 (4) ◽  
Author(s):  
Judith A.R. van Waes ◽  
Linda M. Peelen ◽  
Hans Kemperman ◽  
Remco B. Grobben ◽  
Hendrik M. Nathoe ◽  
...  
Keyword(s):  
Predictive Value ◽  
Myocardial Injury ◽  
Troponin I ◽  
Risk Index ◽  
Cardiac Risk ◽  
Noncardiac Surgery ◽  
Added Value ◽  
Troponin Elevation ◽  
Kinetics Of ◽  
Worse Prognosis

Abstract Background: Myocardial injury after noncardiac surgery, as measured by troponin elevation, is strongly associated with mortality. However, it is unknown in which patients prognosis can be improved. The presence of kinetic changes of troponin may be associated with a worse prognosis and warrant more aggressive management. Therefore, we aimed to study the kinetics of troponin in patients with postoperative myocardial injury, and to determine the added predictive value of kinetic changes of troponin on mortality. Methods: This cohort study included patients with myocardial injury after noncardiac surgery. Troponin I (TnI) was measured on the first three postoperative days. The primary outcome was all-cause 1-year mortality. We studied both absolute and relative TnI changes, and determined the delta TnI that was associated with mortality to distinguish a rise-and-fall TnI pattern from a stable TnI pattern. Next, we determined the added predictive value of a rise-and-fall TnI pattern for mortality. Results: In total, 634 patients were included. The risk ratio (RR) for mortality increased significantly with an absolute delta TnI of ≥200 ng/L (RR 1.5, 99.4% CI 1.0–2.2, p=0.003). Using this delta TnI to define a rise-and-fall pattern, 459 patients (72%) had a stable TnI pattern and 175 patients (28%) had a rise-and-fall pattern. When added to a model including the highest TnI value and variables from the revised cardiac risk index (RCRI), the TnI pattern did not increase the predictive value for mortality. Conclusions: A postoperative TnI rise-and-fall pattern was associated with 1-year mortality, but had no added value in addition to the highest TnI level to predict 1-year mortality. Therefore, postoperative TnI kinetics are not useful for further mortality risk stratification in patients with myocardial injury after noncardiac surgery.

scholarly journals Postoperative Myocardial Injury in Patients Classified as Low Risk Preoperatively Is Associated With a Particularly Increased Risk of Long‐Term Mortality After Noncardiac Surgery

2021 ◽  
Author(s):  
Sunil K. Vasireddi ◽  
Erica Pivato ◽  
Enrique Soltero‐Mariscal ◽  
Raghuram Chava ◽  
Laurence O. James ◽  
...  
Keyword(s):  
Risk Index ◽  
Cardiac Risk ◽  
Noncardiac Surgery ◽  
Low Risk ◽  
Preoperative Risk ◽  
Improvement Program ◽  
Troponin Elevation ◽  
American College Of Surgeons ◽  
All Cause Mortality

Background Prior studies have shown an association between myocardial injury after noncardiac surgery (MINS) and all‐cause mortality in patients following noncardiac surgery. However, the association between preoperative risk assessments, Revised Cardiac Risk Index and American College of Surgeons National Surgical Quality Improvement Program, and postoperative troponin elevations and long‐term mortality is unknown. Methods and Results A retrospective chart review identified 548 patients who had a troponin I level drawn within 14 days of noncardiac surgery that required an overnight hospital stay. Patients aged 40 to 80 years with at least 2 cardiovascular risk factors were included, while those with trauma, pulmonary embolism, and neurosurgery were excluded. Kaplan–Meier survival and odds ratio (OR) with sensitivity/specificity analysis were performed to assess the association between preoperative risk and postoperative troponin elevation and all‐cause mortality at 1 year. Overall, 69%/31% were classified as low‐risk/high‐risk per the Revised Cardiac Risk Index and 66%/34% per American College of Surgeons National Surgical Quality Improvement Program. Comparing the low‐risk versus high‐risk groups, preoperative risk assessment was not associated with either postoperative troponin elevation or 1‐year mortality. MINS portended a 1‐year mortality of OR, 3.9 (95% CI, 2.44–6.33) in the total population. Patients classified as low risk preoperatively with MINS had the highest risk of 1‐year mortality (OR, 9.6; 95% CI, 4.27–24.38), with a low prevalence of statin use. Conclusions Current preoperative risk stratification tools do not prognosticate the risk of postoperative troponin elevation and all‐cause mortality at 1 year. Interestingly, patients classified as low risk preoperatively with MINS had a markedly higher 1‐year mortality risk compared with the general population, and most of them are not taking a statin. Our results suggest that evaluating preoperatively low‐risk patients for MINS presents an opportunity for prognostication, risk reclassification, and initiating therapies such as statins to mitigate long‐term risk.

scholarly journals Patient Selection for Routine Troponin Monitoring After Noncardiac Surgery

2021 ◽  
Author(s):  
Corien S. A. Weersink ◽  
Judith A. R. van Waes ◽  
Remco B. Grobben ◽  
Hendrik M. Nathoe ◽  
Wilton A. van Klei
Keyword(s):  
High Risk ◽  
Troponin I ◽  
Elective Surgery ◽  
Risk Index ◽  
Regression Tree ◽  
Cardiac Risk ◽  
Noncardiac Surgery ◽  
Classification And Regression Tree ◽  
Regression Tree Analysis ◽  
Number Needed To Screen

Background Myocardial infarction is an important complication after noncardiac surgery. Therefore, perioperative troponin surveillance is recommended for patients at risk. The aim of this study was to identify patients at high risk of perioperative myocardial infarction (POMI), in order to aid appropriate selection and to omit redundant laboratory measurements in patients at low risk. Methods and Results This observational cohort study included patients ≥60 years of age who underwent intermediate to high risk noncardiac surgery. Routine postoperative troponin I monitoring was performed. The primary outcome was POMI. Classification and regression tree analysis was used to identify patient groups with varying risks of POMI. In each subgroup, the number needed to screen to identify 1 patient with POMI was calculated. POMI occurred in 216 (4%) patients and other myocardial injury in 842 (15%) of the 5590 included patients. Classification and regression tree analysis divided patients into 14 subgroups in which the risk of POMI ranged from 1.7% to 42%. Using a risk of POMI ≥2% to select patients for routine troponin I monitoring, this monitoring would be advocated in patients ≥60 years of age undergoing emergency surgery, or those undergoing elective surgery with a Revised Cardiac Risk Index class >2 (ie >1 risk factor). The number needed to screen to detect a patient with POMI would be 14 (95% CI 14–14) and 26% of patients with POMI would be missed. Conclusions To improve selection of high‐risk patients ≥60 years of age, routine postoperative troponin I monitoring could be considered in patients undergoing emergency surgery, or in patients undergoing elective surgery classified as having a revised cardiac risk index class >2.

scholarly journals Use of a Polygenic Risk Score Improves Prediction of Myocardial Injury After Non-Cardiac Surgery

2020 ◽  
Vol 13 (4) ◽  
Author(s):  
Nicholas J. Douville ◽  
Ida Surakka ◽  
Aleda Leis ◽  
Christopher B. Douville ◽  
Whitney E. Hornsby ◽  
...  
Keyword(s):  
Coronary Artery Disease ◽  
Coronary Artery ◽  
Odds Ratio ◽  
Myocardial Injury ◽  
Risk Index ◽  
Cardiac Risk ◽  
Noncardiac Surgery ◽  
Polygenic Risk Score ◽  
Polygenic Risk ◽  
Artery Disease

Background: While postoperative myocardial injury remains a major driver of morbidity and mortality, the ability to accurately identify patients at risk remains limited despite decades of clinical research. The role of genetic information in predicting myocardial injury after noncardiac surgery (MINS) remains unknown and requires large scale electronic health record and genomic data sets. Methods: In this retrospective observational study of adult patients undergoing noncardiac surgery, we defined MINS as new troponin elevation within 30 days following surgery. To determine the incremental value of polygenic risk score (PRS) for coronary artery disease, we added the score to 3 models of MINS risk: revised cardiac risk index, a model comprised entirely of preoperative variables, and a model with combined preoperative plus intraoperative variables. We assessed performance without and with PRSs via area under the receiver operating characteristic curve and net reclassification index. Results: Among 90 053 procedures across 40 498 genotyped individuals, we observed 429 cases with MINS (0.5%). PRS for coronary artery disease was independently associated with MINS for each multivariable model created (odds ratio=1.12 [95% CI, 1.02–1.24], P =0.023 in the revised cardiac risk index-based model; odds ratio, 1.19 [95% CI, 1.07–1.31], P =0.001 in the preoperative model; and odds ratio, 1.17 [95% CI, 1.06–1.30], P =0.003 in the preoperative plus intraoperative model). The addition of clinical risk factors improved model discrimination. When PRS was included with preoperative and preoperative plus intraoperative models, up to 3.6% of procedures were shifted into a new outcome classification. Conclusions: The addition of a PRS does not significantly improve discrimination but remains independently associated with MINS and improves goodness of fit. As genetic analysis becomes more common, clinicians will have an opportunity to use polygenic risk to predict perioperative complications. Further studies are necessary to determine if PRSs can inform MINS surveillance.

Predictive Value of Stress Testing, Revised Cardiac Risk Index, and Functional Status in Patients Undergoing Noncardiac Surgery

2019 ◽  
Vol 33 (4) ◽  
pp. 927-932 ◽  
Author(s):  
Roop Kaw ◽  
Vijaiganesh Nagarajan ◽  
Likhitesh Jaikumar ◽  
Meghana Halkar ◽  
Divyanshu Mohananey ◽  
...  
Keyword(s):  
Functional Status ◽  
Predictive Value ◽  
Stress Testing ◽  
Risk Index ◽  
Cardiac Risk ◽  
Noncardiac Surgery ◽  
Cardiac Risk Index

Abstract 14870: Clinical Significance of Troponin Elevation in a Contemporary Hospitalized Population: Endotypes, Morbidity and In-hospital Mortality

Circulation ◽  
2020 ◽  
Vol 142 (Suppl_3) ◽  
Author(s):  
Michael Briscoe ◽  
Robert A Sykes ◽  
Thomas Krysztofiak ◽  
Kenneth Mangion ◽  
Oliver H Peck ◽  
...  
Keyword(s):  
Clinical Significance ◽  
Myocardial Injury ◽  
Troponin I ◽  
Coronary Revascularization ◽  
High Sensitivity ◽  
Hospitalized Patients ◽  
Troponin Elevation ◽  
Reference Limit ◽  
Upper Reference Limit

Introduction: Unplanned hospitalizations are commonly associated with a circulating troponin concentration >99 th percentile upper reference limit (URL). In order to better understand the clinical significance of troponin elevation, we evaluated outcomes in hospitalized patients according to cardiac endotype. Methods: We prospectively screened consecutive hospitalized patients with elevated high-sensitivity troponin-I (hs-TnI) concentrations (Abbott ARCHITECT troponin-I assay; sex-specific URL, 99 th centile: male: >34ng/L; female: >16ng/L) within a regional cardiac care network (population 650,000). A cardiology clinical team adjudicated individual patient records and assigned endotypes by consensus agreement according to the Fourth Universal Definition of Myocardial Infarction (MI). Endotypes were sub-classified into etiological category by inciting event(s). Characteristics and comorbidity were compared and outcomes recorded on virtual follow-up until June 2 nd 2020. Results: A total of 390 consecutive patients with ≥1 hs-TnI value >URL between March 1-April 15, 2020, were evaluated; 44 patients were excluded ( Duplicates: 2; Missing data: 41; Research patient: 1 ). Of 346 who qualified for inclusion, an index diagnosis of Type 1 MI (T1MI), T2MI and myocardial injury were assigned in 115 (33.2%), 79 (22.8%) and 152 (43.9%) patients, respectively. Compared with T1MI, patients with T2MI and myocardial injury had lower peak hs-TnI values (median [IQR]: 86 [250-697] vs 5020 [853-7774]ng/L; p< 0.01), lower estimated 10-year survival (40.2% vs 53.4%; p=0.002), less frequently underwent coronary revascularization (1.4% vs 45.2%; p<0.0005) and had longer inpatient stay (13.0 vs 6.1 days). Inpatient and overall mortality rates from admission to follow-up (median [range]: 71 [0-151] days) were higher among patients with T2MI and myocardial injury (19.9% vs 7.8%; p=0.004; and 26.0% vs 11.3%; Log rank (Mantel-Cox) X 2 = 1.927; p=0.003) independent of similar cardiovascular risk profiles. Conclusions: Despite lower peak circulating troponin concentrations, patients with T2MI and myocardial injury had higher inpatient mortality, lower estimated 10-year survival and longer in-hospital stay compared to those with T1MI.

Abstract 12444: Outcomes After Starting Beta-Blockade Within a Clinically Sensible Period Before Major Elective Noncardiac Surgery

Circulation ◽  
2014 ◽  
Vol 130 (suppl_2) ◽  
Author(s):  
Duminda N Wijeysundera ◽  
Dennis T Ko ◽  
Harindra C Wijeysundera ◽  
Lingsong Yun ◽  
W. Scott Beattie
Keyword(s):  
Cohort Study ◽  
Beta Blockers ◽  
Risk Index ◽  
Cardiac Risk ◽  
Population Based ◽  
Noncardiac Surgery ◽  
Beta Blockade ◽  
Matched Cohort ◽  
Post Surgery ◽  
Median Daily Dose

INTRODUCTION: Guidelines recommend that perioperative beta-blockade be started days to weeks before surgery. Nonetheless, all randomized trials except for the controversial DECREASE trials started treatment ≤1 day before surgery, while most observational studies did not distinguish between long-term beta-blockade versus beta-blockers started for perioperative reasons. We thus conducted a population-based cohort study of the effectiveness of beta-blockade started within a clinically sensible period (8-60 days) before surgery. METHODS: Following research ethics approval, we conducted a cohort study of patients (≥66 years) who underwent major elective noncardiac surgery from 2003 and 2012 in Ontario, Canada. Propensity-score methods were used to form a matched cohort that reduced important differences between patients who started beta-blockers 8-60 days before surgery versus controls (no beta-blockers within 1 year before surgery). We measured the association of beta-blockade with 30-day (death, MI, stroke) and 1-year (death) outcomes post-surgery. Subgroup analyses were performed based on Revised Cardiac Risk Index class and history of prior CAD. RESULTS: The cohort included 4268 beta-blocked patients and 154,357 controls. Metoprolol (median daily dose 50 mg) was prescribed to 36% of beta-blocked patients, atenolol (median 25 mg) to 26%, and bisoprolol (median 5 mg) to 37%. In the matched cohort (n=8492), beta-blockade was not associated with death (RR 0.96; CI 0.70-1.32), MI (RR 0.92; CI 0.72-1.17), and stroke (RR 1.31; CI 0.68-2.52) at 30-days, or death at 1-year (Figure). Associations with outcomes did not differ significantly across subgroups. CONCLUSIONS: Outcomes were not altered in patients who start perioperative beta-blockade within a clinically sensible period before surgery. A large randomized trial is needed to determine if the continued use of perioperative beta-blockade in clinical practice is justified.

scholarly journals The Use of Lee and Co-Workers’ Index to Assist a Risk Adjusted Audit of Perioperative Cardiac Outcome

2008 ◽  
Vol 36 (2) ◽  
pp. 167-173 ◽  
Author(s):  
P. J. Moran ◽  
T. Ghidella ◽  
G. Power ◽  
A. S. Jenkins ◽  
D. Whittle
Keyword(s):  
Risk Factors ◽  
High Risk ◽  
Positive Result ◽  
Cardiac Event ◽  
Risk Index ◽  
Cardiac Risk ◽  
Noncardiac Surgery ◽  
Frequent Use ◽  
Cardiac Outcome ◽  
The Impact

Lee and co-workers’ revised cardiac risk index was used to study the perioperative cardiac outcome of 296 patients. The index uses a history of ischaemic heart disease, congestive cardiac failure, diabetes treated with insulin, a creatinine greater than 180 μmol/l, cerebrovascular disease and high risk surgery as the risk factors involved in predicting a perioperative cardiac event. It was derived on the basis of data from patients over the age of 50 years undergoing elective, noncardiac surgery with an expected inpatient stay of two or more days. The presence of one, two and three or more risk factors predicted a risk of a major cardiac event of 1.3% (95% confidence interval [CI] 0.7 to 2.1), 3.6% (95% CI 2.1 to 5.6) and 9% (95% CI 5.5 to 13.8) respectively in Lee's derivation group of 2,893 patients. In our audit of 296 patients we observed a cardiac event rate of 0.8% (95% CI 0 to 2.3%), 6.7% (95% CI 1.6 to 10%) and 2% (95% CI 0 to 5.9%), in patients with one, two and three or more risk factors respectively. The more frequent use of ECGs and troponin levels in the routine postoperative care of high risk patients undergoing major noncardiac surgery is recommended on the basis of the frequency of a positive result and the impact of a positive result on a patient's management.

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