Implications of elevated troponin on time-to-surgery in non-ST elevation myocardial infarction (NIHR Health Informatics Collaborative: TROP-CABG study)

Background Cardiac troponin is commonly raised in patients presenting with malignancy. The prognostic significance of raised troponin in these patients is unclear. Objectives We sought to investigate the relation between troponin and mortality in a large, well characterised cohort of patients with a routinely measured troponin and a primary diagnosis of malignancy. Methods We used the National Institute for Health Research (NIHR) Health Informatics Collaborative data of 5571 patients, who had troponin levels measured at 5 UK cardiac centres between 2010 and 2017 and had a primary diagnosis of malignancy. Patients were classified into solid tumour or haematological malignancy subgroups. Peak troponin levels were standardised as a multiple of each laboratory’s 99th -percentile upper limit of normal (xULN). Results 4649 patients were diagnosed with solid tumours and 922 patients with haematological malignancies. Raised troponin was an independent predictor of mortality in all patients (Troponin > 10 vs. <1 adjusted HR 2.01, 95% CI 1.73 to 2.34), in solid tumours (HR 1.84, 95% CI 1.55 to 2.19), and in haematological malignancy (HR 2.72, 95% CI 1.99 to 3.72). There was a significant trend in increasing mortality risk across troponin categories in all three subgroups (p < 0.001). Conclusion Raised troponin level is associated with increased mortality in patients with a primary diagnosis of malignancy regardless of cancer subtype. Mortality risk is stable for patients with a troponin level below the ULN but increases as troponin level increases above the ULN in the absence of acute coronary syndrome.

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Possibilities for improving hospital and remote forecasts for unstable angina

Boytsov,

Provatorov

2024

Terapevticheskii arkhiv

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Unstable angina (UA) is a type of acute coronary syndrome (ACS) without ischemic myocardial damage. The main criterion for the diagnosis of UA in ACS is the absence of changes in the concentration of cardiac troponin in the patient’s blood. When the volume of myocardial damage is small, it may be difficult to detect myocardial infarction in a patient using low-sensitivity tests for determining of cardiac troponin in the blood. This issue may lead to overdiagnosis of UA in patients with non-STE ACS. Optimal drug therapy and revascularization of the coronary arteries significantly reduce the risk of death and the development of myocardial infarction both in the hospital and in the long-term period in patients with UA. Outpatient follow-up and provision of free of charge medications to patients may reduce long-term mortality after an episode of UA.

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Implications of elevated troponin on time-to-surgery in non-ST elevation myocardial infarction (NIHR Health Informatics Collaborative: TROP-CABG study)

Cited by 3 publications

References 24 publications

Monitoring the “high” in high-sensitivity cardiac troponin assays for patient risk stratification

Monitoring the “high” in high-sensitivity cardiac troponin assays for patient risk stratification

Prognostic significance of troponin in patients with malignancy (NIHR Health Informatics Collaborative TROP-MALIGNANCY study)

Possibilities for improving hospital and remote forecasts for unstable angina

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