Clinical features and prognosis of patients with acute non-specific chest pain in emergency and cardiology departments after the introduction of high-sensitivity troponins: a prospective cohort study

Nivethitha Ilangkovan, Hans Mickley, Axel Diederichsen, Annmarie Lassen, Thomas L Sørensen, Hussam Mahmoud Sheta, Peter B Stæhr, Christian Backer Mogensen

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Abstract

OBJECTIVES: To determine the incidence of clinical, cardiac-related endpoints and mortality among patients presenting to an emergency or cardiology department with non-specific chest pain (NSCP), and who receive testing with a high-sensitivity troponin. A second objective was to identify risk factors for the above-noted endpoints during 12 months of follow-up.

DESIGN: A prospective multicentre study.

SETTING: Emergency and cardiology departments in Southern Denmark.

SUBJECTS: The study enrolled 1027 patients who were assessed for acute chest pain in an emergency or cardiology department, and in whom a myocardial infarction or another obvious reason for chest pain had been ruled out. Patients were enrolled from September 2014 to June 2015 and followed for 1 year.

MAIN OUTCOME MEASURES: Clinical, cardiac-related endpoints (cardiac-related death, acute myocardial infarction, unstable angina and coronary revascularisation) and all-cause mortality.

RESULTS: Over a period of 1 year, cardiac-related endpoints were found in 19 patients (1.9%): 0 patients experienced cardiac-related death, 2 (0.2%) had myocardial infarction, 4 (0.4%) had unstable angina pectoris and 17 (1.7%) underwent coronary revascularisation. All-cause mortality was observed in seven patients (0.7%). When compared with the general population, the standardised mortality ratio did not differ. The risk factors associated with the study endpoints included male gender, body mass index >25 kg/m2, previous known coronary artery disease, hypertension, hypercholesterolaemia, diabetes mellitus and the use of statins. A total of 73% of the endpoints occurred in males.

CONCLUSION: The prognosis for patients with NSCP is favourable, with a 1-year mortality after discharge that is comparable with the background population. Few clinical endpoints took place during follow-up, and those that did were predominantly in males.

OriginalsprogEngelsk
Artikelnummere018636
TidsskriftBMJ Open
Vol/bind7
Udgave nummer12
Antal sider9
ISSN2044-6055
DOI
StatusUdgivet - 2017

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