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Does the discharge ECG provide additional prognostic insight(s) in non-ST elevation ACS patients from that acquired on admission?
Does the discharge ECG provide additional prognostic insight(s) in non-ST elevation ACS patients from that acquired on admission? European heart journal HERSI, A., Fu, Y., Wong, B., Mahaffey, K. W., Harrington, R. A., Califf, R. M., Van de Werf, F., Armstrong, P. W. 2003; 24 (6): 522-531Abstract
Although the prognostic value of admission ST changes in patients with non-ST elevation acute coronary syndrome (ACS) is established, the utility of the discharge ECG is unknown. Accordingly, using the PARAGON-B Troponin substudy, we assessed the prevalence of ST depression on both admission and discharge ECG, the likelihood of developing new Q-waves at discharge and the additional prognostic value of these changes.Nine hundred and eighteen patients were studied; 542 patients (59%) had admission ST downward arrow > or =1mm and 376 patients (41%) did not and their 6-month mortality was 4.4 vs 0.8%, P=0.002, respectively. Of patients with ST downward arrow on admission, 320 (59%) normalized their ST segment at discharge. Of patients without ST downward arrow on admission, 35 (9.3%) developed new ST downward arrow at discharge. Patients with persistent ST downward arrow on discharge had a higher 6-month mortality (6.0 vs 0.9%), (re)MI (16.3 vs 7.4%), and death/(re)MI (20.0 vs 8.3%) than those who never had ST downward arrow (all P< or =0.002). Two hundred and fifty-six patients had Q-waves on admission whereas by discharge 320 had Q-waves. Patients with Q-waves on discharge vs those without had a higher mortality (4.8 vs 1.9%), (re)MI (13.8 vs 8.3%), and death/(re)MI (16.4 vs 9.6%) at 6 months (all P< or =0.021).This study highlights that the dynamic ECG changes which occur between admission and discharge in non-ST elevation ACS patients allows further risk stratification in determining the likelihood of 6-month death and/or re(MI).
View details for PubMedID 12643885