OBJECTIVE: ST-segment elevation in acute pericarditis is believed to be caused by superficial myocardial inflammation or epicardial injury. We used cardiac troponin I, a sensitive and specific marker of myocardial injury, to assess myocardial lesions in idiopathic acute pericarditis and its relationship to ST-segment elevation. PATIENTS AND METHODS: Sixty-nine consecutive patients (53 men, 48+/-17 years) with idiopathic acute pericarditis were included. We used an enzymoimmunoflurometric method to measure serum cardiac troponin I on admission (myocardial infarction threshold was 1.5 ng. ml(-1)). RESULTS: Cardiac troponin I was detectable in 34 patients (49%) and was beyond the 1.5 ng. ml(-1)threshold in 15 (22%). Coronary angiography performed in seven of these 15 patients was normal in all of them. ST-segment elevation was observed in 93% of the patients with cardiac troponin I >1.5 ng. ml(-1)vs 57% of those without (P<0.01). Sensitivity of ST-segment elevation to detect myocardial injury was 93% and specificity 43%. Patients with a cardiac troponin I increase higher than 1.5 ng. ml(-1)were more likely to have had a recent infection (66% vs 31%;P=0.01) and were younger (37+/-14 vs 52+/-16 years;P=0.002). There was no significant relationship with other parameters such as pericardial friction rub, fever, PR segment abnormalities, echocardiographic findings or C-reactive protein. CONCLUSION: In patients with idiopathic acute pericarditis, an increase in cardiac troponin I is frequently observed, especially in younger patients and those with a recent infection. Although ST-segment elevation does not reliably indicate myocardial injury, a significant cardiac troponin I increase is only seen in these patients. Copyright 2000
OBJECTIVE: ST-segment elevation in acute pericarditis is believed to be caused by superficial myocardial inflammation or epicardial injury. We used cardiac troponin I, a sensitive and specific marker of myocardial injury, to assess myocardial lesions in idiopathic acute pericarditis and its relationship to ST-segment elevation. PATIENTS AND METHODS: Sixty-nine consecutive patients (53 men, 48+/-17 years) with idiopathic acute pericarditis were included. We used an enzymoimmunoflurometric method to measure serum cardiac troponin I on admission (myocardial infarction threshold was 1.5 ng. ml(-1)). RESULTS: Cardiac troponin I was detectable in 34 patients (49%) and was beyond the 1.5 ng. ml(-1)threshold in 15 (22%). Coronary angiography performed in seven of these 15 patients was normal in all of them. ST-segment elevation was observed in 93% of the patients with cardiac troponin I >1.5 ng. ml(-1)vs 57% of those without (P<0.01). Sensitivity of ST-segment elevation to detect myocardial injury was 93% and specificity 43%. Patients with a cardiac troponin I increase higher than 1.5 ng. ml(-1)were more likely to have had a recent infection (66% vs 31%;P=0.01) and were younger (37+/-14 vs 52+/-16 years;P=0.002). There was no significant relationship with other parameters such as pericardial friction rub, fever, PR segment abnormalities, echocardiographic findings or C-reactive protein. CONCLUSION: In patients with idiopathic acute pericarditis, an increase in cardiac troponin I is frequently observed, especially in younger patients and those with a recent infection. Although ST-segment elevation does not reliably indicate myocardial injury, a significant cardiac troponin I increase is only seen in these patients. Copyright 2000
Authors: Alexander Illmann; Thomas Riemer; Raimund Erbel; Evangelos Giannitsis; Christian Hamm; Michael Haude; Gerd Heusch; Lars S Maier; Thomas Münzel; Claus Schmitt; Burghard Schumacher; Jochen Senges; Thomas Voigtländer; Harald Mudra Journal: Clin Res Cardiol Date: 2014-01 Impact factor: 5.460
Authors: Masud H Khandaker; Raul E Espinosa; Rick A Nishimura; Lawrence J Sinak; Sharonne N Hayes; Rowlens M Melduni; Jae K Oh Journal: Mayo Clin Proc Date: 2010-06 Impact factor: 7.616