Thomas Nestelberger1, Karin Wildi1, Jasper Boeddinghaus1, Raphael Twerenbold1, Tobias Reichlin1, Maria Rubini Giménez1, Christian Puelacher1, Cedric Jaeger1, Karin Grimm1, Zaid Sabti2, Petra Hillinger2, Nikola Kozhuharov2, Jeanne du Fay de Lavallaz1, Florentina Pinck2, Beatriz Lopez3, Emilio Salgado3, Òscar Miró3, Roland Bingisser4, Jens Lohrmann5, Stefan Osswald2, Christian Mueller6. 1. Department of Cardiology, University Hospital Basel, Switzerland; Cardiovascular Research Institute Basel (CRIB), University Hospital Basel, Switzerland; GREAT network. 2. Department of Cardiology, University Hospital Basel, Switzerland; Cardiovascular Research Institute Basel (CRIB), University Hospital Basel, Switzerland. 3. GREAT network; Emergency department, Hospital Clinic, Barcelona, Catalonia, Spain. 4. Department of Emergency Medicine, University Hospital Basel, Switzerland. 5. Department of Cardiology, University Hospital Basel, Switzerland; Cardiovascular Research Institute Basel (CRIB), University Hospital Basel, Switzerland; Department of Emergency Medicine, University Hospital Basel, Switzerland. 6. Department of Cardiology, University Hospital Basel, Switzerland; Cardiovascular Research Institute Basel (CRIB), University Hospital Basel, Switzerland; GREAT network. Electronic address: christian.mueller@usb.ch.
Abstract
OBJECTIVE: The novel high-sensitivity cardiac troponin (hs-cTn) 0h/1h-algorithm substantially improves the early triage of patient's assigned "rule-out" or "rule-in" of acute myocardial infarction (AMI), while diagnostic uncertainty remains in that 25-30% of patients assigned to "observe". We aimed to better characterize these patients. METHODS: In a prospective multicenter diagnostic study, we applied the hs-cTnT 0h/1h-algorithm in 2213 unselected patients presenting with symptoms suggestive of AMI to the emergency department. The final diagnosis was adjudicated by two independent cardiologists using all available information. Survival at 720-days was the prognostic endpoint. Findings were validated using a hs-cTnI 0h/1h-algorithm. RESULTS: Twenty-four percent (n=523) of patients were assigned to "observe" by the hs-cTnT 0h/1h-algorithm. These patients differed significantly in multiple characteristics from "rule-out" and "rule-in" patients: they were older, in 75% male, and very often (57%) had pre-existing coronary artery disease (CAD). Diagnostic uncertainty for the presence of an AMI/UA was high. Only 39% of patients were suitable for coronary computed tomography angiography (CCTA). The most common final adjudicated diagnoses were non-cardiac disease (38%), non-coronary cardiac disease (24%), unstable angina (UA, 21%), and AMI (15%). Absolute hs-cTnT-changes within 3h had the highest diagnostic accuracy for AMI (AUC 0.86). Cumulative 720-day survival rate was 86%, which was significantly lower as compared to "rule-out" (p<0.001) and comparable to "rule-in" (p=ns). Findings were similar for the hs-cTnI "observe" zone. CONCLUSION: "Observe" patients are typically elderly men with pre-existing CAD and high long-term mortality. Absolute hs-cTn-changes within 3h, functional stress imaging and coronary angiography are the key diagnostic modalities.
OBJECTIVE: The novel high-sensitivity cardiac troponin (hs-cTn) 0h/1h-algorithm substantially improves the early triage of patient's assigned "rule-out" or "rule-in" of acute myocardial infarction (AMI), while diagnostic uncertainty remains in that 25-30% of patients assigned to "observe". We aimed to better characterize these patients. METHODS: In a prospective multicenter diagnostic study, we applied the hs-cTnT 0h/1h-algorithm in 2213 unselected patients presenting with symptoms suggestive of AMI to the emergency department. The final diagnosis was adjudicated by two independent cardiologists using all available information. Survival at 720-days was the prognostic endpoint. Findings were validated using a hs-cTnI 0h/1h-algorithm. RESULTS: Twenty-four percent (n=523) of patients were assigned to "observe" by the hs-cTnT 0h/1h-algorithm. These patients differed significantly in multiple characteristics from "rule-out" and "rule-in" patients: they were older, in 75% male, and very often (57%) had pre-existing coronary artery disease (CAD). Diagnostic uncertainty for the presence of an AMI/UA was high. Only 39% of patients were suitable for coronary computed tomography angiography (CCTA). The most common final adjudicated diagnoses were non-cardiac disease (38%), non-coronary cardiac disease (24%), unstable angina (UA, 21%), and AMI (15%). Absolute hs-cTnT-changes within 3h had the highest diagnostic accuracy for AMI (AUC 0.86). Cumulative 720-day survival rate was 86%, which was significantly lower as compared to "rule-out" (p<0.001) and comparable to "rule-in" (p=ns). Findings were similar for the hs-cTnI "observe" zone. CONCLUSION: "Observe" patients are typically elderly men with pre-existing CAD and high long-term mortality. Absolute hs-cTn-changes within 3h, functional stress imaging and coronary angiography are the key diagnostic modalities.
Authors: Jasper Boeddinghaus; Tobias Reichlin; Thomas Nestelberger; Raphael Twerenbold; Yvette Meili; Karin Wildi; Petra Hillinger; Maria Rubini Giménez; Janosch Cupa; Lukas Schumacher; Marie Schubera; Patrick Badertscher; Sydney Corbière; Karin Grimm; Christian Puelacher; Zaid Sabti; Dayana Flores Widmer; Nicolas Schaerli; Nikola Kozhuharov; Samyut Shrestha; Tobias Bürge; Patrick Mächler; Michael Büchi; Katharina Rentsch; Òscar Miró; Beatriz López; F Javier Martin-Sanchez; Esther Rodriguez-Adrada; Beata Morawiec; Damian Kawecki; Eva Ganovská; Jiri Parenica; Jens Lohrmann; Andreas Buser; Dagmar I Keller; Stefan Osswald; Christian Mueller Journal: Clin Res Cardiol Date: 2017-02-01 Impact factor: 5.460
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