Elevated cardiac troponin I in patients with paroxysmal supraventricular tachycardia can occur in the absence of coronary artery disease, highlighting the need for caution before performing invasive coronary angiography.
May warrant caution interpreting cTnI elevation in PSVT as CAD; hypothesis-generating and should not yet change practice.
BACKGROUND: Although cardiac troponin I gives excellent accuracy in the identification of myocardial necrosis, it can also be elevated in a series of diseases other than acute coronary syndromes. CASE PRESENTATION: We present two cases of Chinese patients with a high serum troponin I level after an acute episode of paroxysmal supraventricular tachycardia with normal coronary arteries via angiography. CONCLUSION: Abnormal troponin elevations can be seen in patients presenting with paroxysmal supraventricular tachycardia and angiographically-normal coronary arteries. Caution is advised with the use of invasive assessments such as coronary angiography in the differential diagnosis of patients with paroxysmal supraventricular tachycardia and elevated troponin levels.
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Xue et al. (2014) studied this question.
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