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Highly sensitive troponin

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https://www.readbyqxmd.com/read/28807978/high-sensitivity-troponin-star-player-but-no-lone-hero
#1
Richard Body
No abstract text is available yet for this article.
August 14, 2017: Clinical Chemistry
https://www.readbyqxmd.com/read/28806444/eliminating-creatine-kinase-myocardial-band-testing-in-suspected-acute-coronary-syndrome-a-value-based-quality-improvement
#2
Matthew D Alvin, Allan S Jaffe, Roy C Ziegelstein, Jeffrey C Trost
Cardiac biomarker testing is estimated to occur in nearly 30 million emergency department visits nationwide each year in the United States. The American College of Cardiology/European Society of Cardiology indicate that cardiac troponin is the biomarker of choice owing to its nearly absolute myocardial tissue specificity and high clinical sensitivity for myocardial injury. Multiple academic medical centers have implemented interventions to eliminate the routine ordering of creatine kinase-myocardial band tests, with published patient safety outcomes data; however, creatine kinase-myocardial band testing is still ordered in many hospitals and emergency departments...
August 14, 2017: JAMA Internal Medicine
https://www.readbyqxmd.com/read/28801076/early-development-of-right-ventricular-ischemic-lesions-in-a-novel-large-animal-model-of-acute-right-heart-failure-in-chronic-thromboembolic-pulmonary-hypertension
#3
David Boulate, Jennifer Arthur Ataam, Andrew J Connolly, Genevieve Giraldeau, Myriam Amsallem, Benoit Decante, Lilia Lamrani, Elie Fadel, Peter Dorfmuller, Frederic Perros, Francois Haddad, Olaf Mercier
BACKGROUND: Our aim was to develop a model of acute right heart failure (ARHF) in the setting of pulmonary hypertension and to characterize acute right ventricular lesions that develop early after hemodynamic restoration. METHODS AND RESULTS: We used a described piglet model of chronic pulmonary hypertension (cPH) induced by pulmonary artery occlusions. We induced ARHF in animals with cPH (ARHF-cPH group, n=9) by volume loading and iterative acute pulmonary embolisms until hemodynamic compromise followed by dobutamine infusion for hemodynamic restoration prior to sacrifice for right ventricular tissue evaluation...
August 8, 2017: Journal of Cardiac Failure
https://www.readbyqxmd.com/read/28797433/periprocedural-myocardial-injury-depends-on%C3%A2-transcatheter-heart-valve-type-but-does%C3%A2-not%C3%A2-predict-mortality-in-patients-after-transcatheter-aortic-valve-replacement
#4
Anja Stundl, Regina Schulte, Hannah Lucht, Marcel Weber, Alexander Sedaghat, Jasmin Shamekhi, Berndt Zur, Eberhard Grube, Fritz Mellert, Armin Welz, Rolf Fimmers, Georg Nickenig, Nikos Werner, Jan-Malte Sinning
OBJECTIVES: The aims of this study were to determine plasma elevations of biomarkers of myocardial injury associated with transfemoral (TF) transcatheter aortic valve replacement (TAVR) and to evaluate their prognostic value. BACKGROUND: Increases in biomarkers of myocardial injury are a common finding after TAVR, but their clinical significance is unclear. METHODS: In 756 consecutive TF TAVR patients, cardiac high-sensitivity troponin I (hsTnI) and creatine kinase MB (CK-MB) levels were measured at pre-defined time points to assess the occurrence of myocardial injury (defined as 15 times the upper reference limit for hsTnI [≥1...
August 14, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28797406/ct-detected-growth-of-coronary-artery%C3%A2-calcification-in-asymptomatic-middle-aged-subjects-and-association-with-15-biomarkers
#5
Søren Zöga Diederichsen, Mette Hjortdal Grønhøj, Hans Mickley, Oke Gerke, Flemming Hald Steffensen, Jess Lambrechtsen, Niels Peter Rønnow Sand, Lars Melholt Rasmussen, Michael Hecht Olsen, Axel Diederichsen
OBJECTIVES: This study sought to determine the incidence and progression of coronary artery calcification (CAC) in asymptomatic middle-aged subjects and to evaluate the value of a broad panel of biomarkers in the prediction of CAC growth. BACKGROUND: CAC continues to be a major risk factor, but the value of biochemical markers in predicting CAC incidence and progression remains unresolved. METHODS: At baseline, 1,227 men and women underwent traditional risk assessment and a computed tomography (CT) scan to determine the CAC score...
August 2017: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28797349/biomarker-based-risk-model-to-predict%C3%A2-cardiovascular-mortality-in-patients%C3%A2-with%C3%A2-stable%C3%A2-coronary%C3%A2-disease
#6
Daniel Lindholm, Johan Lindbäck, Paul W Armstrong, Andrzej Budaj, Christopher P Cannon, Christopher B Granger, Emil Hagström, Claes Held, Wolfgang Koenig, Ollie Östlund, Ralph A H Stewart, Joseph Soffer, Harvey D White, Robbert J de Winter, Philippe Gabriel Steg, Agneta Siegbahn, Marcus E Kleber, Alexander Dressel, Tanja B Grammer, Winfried März, Lars Wallentin
BACKGROUND: Currently, there is no generally accepted model to predict outcomes in stable coronary heart disease (CHD). OBJECTIVES: This study evaluated and compared the prognostic value of biomarkers and clinical variables to develop a biomarker-based prediction model in patients with stable CHD. METHODS: In a prospective, randomized trial cohort of 13,164 patients with stable CHD, we analyzed several candidate biomarkers and clinical variables and used multivariable Cox regression to develop a clinical prediction model based on the most important markers...
August 15, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28789859/performance-characteristics-of-a-high-sensitivity-cardiac-troponin-assay-using-plasma-and-whole-blood-samples
#7
P Li, N S Enea, R Zuk, H Tan, A H B Wu, A S Jaffe
No abstract text is available yet for this article.
August 5, 2017: Clinical Biochemistry
https://www.readbyqxmd.com/read/28781317/impact-of-aging-on-high-sensitivity-cardiac-troponin-t-in-patients-suspected-of-acute-myocardial-infarction
#8
Taro Ichise, Hayato Tada, Kenji Sakata, Masa-Aki Kawashiri, Masakazu Yamagishi, Kenshi Hayashi
Objective High-sensitivity cardiac troponin T (hs-cTnT) is widely used for the diagnosis of acute myocardial infarction (AMI). The current cut-off value of 0.014 ng/mL was determined based on the 99th percentile of a normal reference population; however, little data exist regarding the appropriate cut-off value in the elderly (≥75 years). Accordingly, we aimed to investigate the accuracy of the current cut-off value in an elderly population. Methods We assessed 355 consecutive patients (mean age =66.7±16...
August 1, 2017: Internal Medicine
https://www.readbyqxmd.com/read/28777936/comparison-of-non-traditional-biomarkers-and-combinations-of-biomarkers-for-vascular-risk-prediction-in-people-with-type-2-diabetes-the-edinburgh-type-2-diabetes-study
#9
Anna H Price, Christopher J Weir, Paul Welsh, Stela McLachlan, Mark W J Strachan, Naveed Sattar, Jackie F Price
BACKGROUND AND AIMS: We aimed at comparing the impact of multiple non-traditional biomarkers (ankle brachial pressure index (ABI), N-terminal pro-brain natriuretic peptide (NT-proBNP), high sensitivity cardiac troponin (hs-cTnT), gamma-glutamyl transpeptidase (GGT) and four markers of systemic inflammation), both individually and in combination, on cardiovascular risk prediction, over and above traditional risk factors incorporated in the QRISK2 score, in older people with type 2 diabetes...
July 12, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28777195/prevalence-and-prognostic-association-of-circulating-troponin-in-the-acute-respiratory-distress-syndrome
#10
Thomas S Metkus, Eliseo Guallar, Lori Sokoll, David Morrow, Gordon Tomaselli, Roy Brower, Steven Schulman, Frederick K Korley
OBJECTIVE: Circulating cardiac troponin has been associated with adverse prognosis in the acute respiratory distress syndrome in small and single-center studies; however, comprehensive studies of myocardial injury in acute respiratory distress syndrome using modern high-sensitivity troponin assays, which can detect troponin at much lower circulating concentrations, have not been performed. DESIGN: We performed a prospective cohort study. SETTING: We included patients enrolled in previously completed trials of acute respiratory distress syndrome...
August 2, 2017: Critical Care Medicine
https://www.readbyqxmd.com/read/28775185/frequency-of-exercise-induced-st-t-segment-deviations-and-cardiac-arrhythmias-in-recreational-endurance-athletes-during-a-marathon-race-results-of-the-prospective-observational-berlin-beat-of-running-study
#11
Juliane Herm, Agnieszka Töpper, Alexander Wutzler, Claudia Kunze, Matthias Krüll, Lars Brechtel, Jürgen Lock, Jochen B Fiebach, Peter U Heuschmann, Wilhelm Haverkamp, Matthias Endres, Gerhard Jan Jungehulsing, Karl Georg Haeusler
OBJECTIVES: While regular physical exercise has many health benefits, strenuous physical exercise may have a negative impact on cardiac function. The 'Berlin Beat of Running' study focused on feasibility and diagnostic value of continuous ECG monitoring in recreational endurance athletes during a marathon race. We hypothesised that cardiac arrhythmias and especially atrial fibrillation are frequently found in a cohort of recreational endurance athletes. The main secondary hypothesis was that pathological laboratory findings in these athletes are (in part) associated with cardiac arrhythmias...
August 3, 2017: BMJ Open
https://www.readbyqxmd.com/read/28764841/non-st-elevation-acute-coronary-syndromes-a-comprehensive-review
#12
Tamunoinemi Bob-Manuel, Ikechuckwu Ifedili, Guy Reed, Uzoma N Ibebuogu, Rami N Khouzam
Non-ST elevation-acute coronary syndrome (NSTE-ACS) includes NSTE myocardial infarction and unstable angina. This patient population forms approximately two-thirds of all hospital admissions for ACS in the United States each year and is associated with an in-hospital mortality of 5%. NSTE-ACS is primarily due to an acute change in the supply and demand balance of coronary perfusion and myocardial oxygen consumption, because of the significant coronary artery obstruction presenting as plaque rupture or erosion...
September 2017: Current Problems in Cardiology
https://www.readbyqxmd.com/read/28763113/distribution-of-cardiac-troponin-i-in-the-japanese-general-population-and-factors-influencing-its-concentrations
#13
Naoya Abe, Kenichiro Tomita, Mayumi Teshima, Maki Kuwabara, Satoshi Sugawa, Nae Hinata, Masaaki Matsuura, Mutsunori Fujiwara, Kazuhiko Takaya, Toru Hiyoshi, Hiroki Uozumi, Hiroshi Ikenouchi, Rie Ishikawa, Junko Shojima, Junko Komatsu
BACKGROUND: The 99th percentile of cardiac troponin I level in the general population is accepted as the cut-off for the diagnosis of acute myocardial infarction (AMI). However, it is not clear whether the cut-offs derived in racially and geographically different populations are applicable in Japan. METHODS: Troponin I was determined using the Abbott ARCHITECT STAT high-sensitive troponin I immunoassay in 698 apparently healthy individuals who visited the Japanese Red Cross Medical Center for a health checkup...
August 1, 2017: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/28761671/predictors-and-clinical-implication-of-high-sensitivity-cardiac-troponin-i-elevation-following-diagnostic-cardiac-catheterisations
#14
Rikuta Hamaya, Taishi Yonetsu, Tadashi Murai, Yoshihisa Kanaji, Eisuke Usui, Junji Matsuda, Masahiro Hoshino, Makoto Araki, Masahiro Hada, Takayuki Niida, Sadamitsu Ichijo, Yoshinori Kanno, Tsunekazu Kakuta
OBJECTIVES: Although diagnostic coronary angiography (CAG) is performed worldwide, procedure-related myocardial necrosis (PMN) following diagnostic catheter-based procedures has not been well investigated. The aim of this study was to determine clinical and procedural factors associated with PMN, using a high-sensitivity cardiac troponin I (hs-cTnI) assay, and to investigate the clinical implications of PMN. METHODS: Among 697 patients undergoing elective CAG and pre- and post-procedural hs-cTnI (pre-TnI, post-TnI, respectively) measurements, a total of 538 patients (124 female) were evaluated, with 2...
2017: Open Heart
https://www.readbyqxmd.com/read/28760218/growth-differentiation-factor-15-and-risk-of-major-bleeding-in-atrial-fibrillation-insights-from-the-randomized-evaluation-of-long-term-anticoagulation-therapy-re-ly-trial
#15
RANDOMIZED CONTROLLED TRIAL
Ziad Hijazi, Jonas Oldgren, Ulrika Andersson, Stuart J Connolly, John W Eikelboom, Michael D Ezekowitz, Paul A Reilly, Salim Yusuf, Agneta Siegbahn, Lars Wallentin
OBJECTIVE: To evaluate and validate the prognostic value of growth-differentiation factor 15 (GDF-15) beyond clinical characteristics and other biomarkers concerning bleeding and stroke outcomes in patients with atrial fibrillation in the RE-LY trial. METHODS: GDF-15 was measured in samples collected at randomization in 8,474 patients with a median follow-up time of 1.9 years. Patients were stratified based on predefined GDF-15 cutoffs: group 1, <1,200 ng/L (the 90th percentile in healthy individuals); group 2, 1,200-1,800; and group 3, >1,800 ng/L (high-risk individuals)...
August 2017: American Heart Journal
https://www.readbyqxmd.com/read/28760210/a-randomized-trial-of-a-1-hour-troponin-t-protocol-in-suspected-acute-coronary-syndromes-design-of-the-rapid-assessment-of-possible-acs-in-the-emergency-department-with-high-sensitivity-troponin-t-rapid-tnt-study
#16
RANDOMIZED CONTROLLED TRIAL
Cynthia Papendick, Andrew Blyth, Anil Seshadri, Michael J R Edmonds, Tom Briffa, Louise Cullen, Stephen Quinn, Jon Karnon, Anthony Chuang, Adam J Nelson, Matthew Horsfall, Erin Morton, Derek P Chew
BACKGROUND: Protocols incorporating high-sensitivity troponin to guide decision making in the disposition of patients with suspected acute coronary syndromes (ACS) in the emergency department have received a lot of attention. Traditionally, patients with chest pain have required long periods of observation in emergency department before being deemed safe for discharge. In an era of limited health service resources, a protocol that could discharge patients safely within an hour of presentation is extremely attractive...
August 2017: American Heart Journal
https://www.readbyqxmd.com/read/28760208/use-of-troponin-assay-99th-percentile-as-the-decision-level-for-myocardial-infarction-diagnosis
#17
MULTICENTER STUDY
Akshay Bagai, Karen P Alexander, Jeffrey S Berger, Roxy Senior, Chakkanalil Sajeev, Radoslaw Pracon, Kreton Mavromatis, Jose Luis Lopez-Sendón, Gilbert Gosselin, Ariel Diaz, Gian Perna, Jarozlaw Drozdz, Dennis Humen, Birute Petrauskiene, Asim N Cheema, Denis Phaneuf, Subhash Banerjee, Todd D Miller, Sasko Kedev, Herwig Schuchlenz, Gregg W Stone, Shaun G Goodman, Kenneth W Mahaffey, Allan S Jaffe, Yves D Rosenberg, Sripal Bangalore, L Kristin Newby, David J Maron, Judith S Hochman, Bernard R Chaitman
BACKGROUND: The Universal Definition of Myocardial Infarction recommends the 99th percentile concentration of cardiac troponin in a normal reference population as part of the decision threshold to diagnose type 1 spontaneous myocardial infarction. Adoption of this recommendation in contemporary worldwide practice is not well known. METHODS: We performed a cohort study of 276 hospital laboratories in 31 countries participating in the National Heart, Lung, and Blood Institute-sponsored International Study of Comparative Health Effectiveness with Medical and Invasive Approaches trial...
August 2017: American Heart Journal
https://www.readbyqxmd.com/read/28757482/association-between-high-sensitivity-cardiac-troponin-i-and-cardiac-events-in-elderly-women
#18
Joshua R Lewis, Wai H Lim, Germaine Wong, Samuel Abbs, Kun Zhu, Ee M Lim, Peter L Thompson, Richard L Prince
BACKGROUND: Elderly women are at high risk of coronary heart disease (CHD) and heart failure. High-sensitivity assays allow detection of cardiac troponin I (hsTnI) well below diagnostic cutoffs for acute coronary syndrome. We investigated the association between these levels with future cardiac events in community-based ambulant white women aged over 70 years initially recruited for a 5-year randomized, controlled trial of calcium supplements. METHODS AND RESULTS: This was a prospective study of 1081 elderly women without clinical CHD at baseline (1998) or hsTnI above the diagnostic cutoffs for acute coronary syndrome with 14...
July 30, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28757119/low-plasma-testosterone-is-associated-with-elevated-cardiovascular-disease-biomarkers
#19
Alexander W Pastuszak, Taylor P Kohn, Joel Estis, Larry I Lipshultz
BACKGROUND: The relation between testosterone (T) plasma concentration and cardiovascular (CV) risk is unclear, with evidence supporting increased risk in men with low and high T levels. Few studies have assessed CV risk as a function of plasma T levels using objective biomarkers. AIM: To determine the relation between T levels and high-sensitivity CV risk biomarkers. METHODS: Ten thousand forty-one male patients were identified in the database of a commercial clinical laboratory performing biomarker testing...
July 27, 2017: Journal of Sexual Medicine
https://www.readbyqxmd.com/read/28750700/high-sensitivity-troponin-in-the-general-population-time-for-a-new-normal
#20
EDITORIAL
Jennifer E Ho
No abstract text is available yet for this article.
August 1, 2017: Journal of the American College of Cardiology
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