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Early cardiac catheterization is associated with lower mortality only among high-risk patients with ST- and non-ST-elevation acute coronary syndromes: observations from the OPUS-TIMI 16 trial.
Am Heart J. 2005 Feb; 149(2):275-83.AH

Abstract

BACKGROUND

Early cardiac catheterization has been shown to improve outcomes in patients with non-ST-elevation acute coronary syndromes but not yet in those with ST-elevation myocardial infarction (STEMI). The benefit of catheterization in both syndromes may depend on patient risk for adverse clinical outcomes.

METHODS

We analyzed the relation between inhospital catheterization and subsequent clinical outcomes based on risk profile in 8286 patients in the OPUS-TIMI 16 Trial of patients with acute coronary syndromes. Using baseline clinical characteristics, patients were stratified into low-, intermediate-, and high-risk groups. The primary end point was 10-month mortality. The STEMI, non-STEMI (NSTEMI), and unstable angina subgroups were analyzed separately.

RESULTS

Inhospital cardiac catheterization was performed in 44% of patients. Mortality rates at 10 months were 1.3%, 2.2%, and 11.3% in the low-, intermediate-, and high-risk groups, respectively. Inhospital cardiac catheterization was associated with a trend to lower mortality among the high-risk patients with STEMI (hazard ratios [HR] 0.57, 95% CI 0.33-1.01, P = .052) and NSTEMI (HR 0.65, 95% CI 0.39-1.07, P = .088) but not in those with unstable angina (HR 0.95, 95% CI 0.63-1.43, P = .82). Catheterization was not associated with any significant difference in mortality in the low-risk or intermediate-risk group. The differences among high-risk patients persisted after adjusting for baseline characteristics; inhospital catheterization was associated with significantly lower mortality in high-risk patients with ST and non-ST myocardial infarction (HR 0.65, 95% CI 0.45-0.95, P = .03).

CONCLUSIONS

Inhospital cardiac catheterization is associated with lower mortality in high-risk patients and no difference in mortality in low-risk and intermediate-risk patients after STEMI and NSTEMI. These data support the hypothesis that high-risk patients with either STEMI or NSTEMI may benefit from an early invasive strategy. New prospective randomized trials are warranted, particularly in the STEMI population.

Authors+Show Affiliations

Department of Medicine, Division of Cardiology, St. Michael's Hospital, University of Toronto, Toronto, Ontario, Canada. cantorw@smh.toronto.on.caNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Clinical Trial
Journal Article
Randomized Controlled Trial
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

15846265

Citation

Cantor, Warren J., et al. "Early Cardiac Catheterization Is Associated With Lower Mortality Only Among High-risk Patients With ST- and non-ST-elevation Acute Coronary Syndromes: Observations From the OPUS-TIMI 16 Trial." American Heart Journal, vol. 149, no. 2, 2005, pp. 275-83.
Cantor WJ, Goodman SG, Cannon CP, et al. Early cardiac catheterization is associated with lower mortality only among high-risk patients with ST- and non-ST-elevation acute coronary syndromes: observations from the OPUS-TIMI 16 trial. Am Heart J. 2005;149(2):275-83.
Cantor, W. J., Goodman, S. G., Cannon, C. P., Murphy, S. A., Charlesworth, A., Braunwauld, E., & Langer, A. (2005). Early cardiac catheterization is associated with lower mortality only among high-risk patients with ST- and non-ST-elevation acute coronary syndromes: observations from the OPUS-TIMI 16 trial. American Heart Journal, 149(2), 275-83.
Cantor WJ, et al. Early Cardiac Catheterization Is Associated With Lower Mortality Only Among High-risk Patients With ST- and non-ST-elevation Acute Coronary Syndromes: Observations From the OPUS-TIMI 16 Trial. Am Heart J. 2005;149(2):275-83. PubMed PMID: 15846265.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Early cardiac catheterization is associated with lower mortality only among high-risk patients with ST- and non-ST-elevation acute coronary syndromes: observations from the OPUS-TIMI 16 trial. AU - Cantor,Warren J, AU - Goodman,Shaun G, AU - Cannon,Christopher P, AU - Murphy,Sabina A, AU - Charlesworth,Andrew, AU - Braunwauld,Eugene, AU - Langer,Anatoly, PY - 2005/4/23/pubmed PY - 2005/9/24/medline PY - 2005/4/23/entrez SP - 275 EP - 83 JF - American heart journal JO - Am Heart J VL - 149 IS - 2 N2 - BACKGROUND: Early cardiac catheterization has been shown to improve outcomes in patients with non-ST-elevation acute coronary syndromes but not yet in those with ST-elevation myocardial infarction (STEMI). The benefit of catheterization in both syndromes may depend on patient risk for adverse clinical outcomes. METHODS: We analyzed the relation between inhospital catheterization and subsequent clinical outcomes based on risk profile in 8286 patients in the OPUS-TIMI 16 Trial of patients with acute coronary syndromes. Using baseline clinical characteristics, patients were stratified into low-, intermediate-, and high-risk groups. The primary end point was 10-month mortality. The STEMI, non-STEMI (NSTEMI), and unstable angina subgroups were analyzed separately. RESULTS: Inhospital cardiac catheterization was performed in 44% of patients. Mortality rates at 10 months were 1.3%, 2.2%, and 11.3% in the low-, intermediate-, and high-risk groups, respectively. Inhospital cardiac catheterization was associated with a trend to lower mortality among the high-risk patients with STEMI (hazard ratios [HR] 0.57, 95% CI 0.33-1.01, P = .052) and NSTEMI (HR 0.65, 95% CI 0.39-1.07, P = .088) but not in those with unstable angina (HR 0.95, 95% CI 0.63-1.43, P = .82). Catheterization was not associated with any significant difference in mortality in the low-risk or intermediate-risk group. The differences among high-risk patients persisted after adjusting for baseline characteristics; inhospital catheterization was associated with significantly lower mortality in high-risk patients with ST and non-ST myocardial infarction (HR 0.65, 95% CI 0.45-0.95, P = .03). CONCLUSIONS: Inhospital cardiac catheterization is associated with lower mortality in high-risk patients and no difference in mortality in low-risk and intermediate-risk patients after STEMI and NSTEMI. These data support the hypothesis that high-risk patients with either STEMI or NSTEMI may benefit from an early invasive strategy. New prospective randomized trials are warranted, particularly in the STEMI population. SN - 1097-6744 UR - https://www.unboundmedicine.com/medline/citation/15846265/Early_cardiac_catheterization_is_associated_with_lower_mortality_only_among_high_risk_patients_with_ST__and_non_ST_elevation_acute_coronary_syndromes:_observations_from_the_OPUS_TIMI_16_trial_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0002870304005356 DB - PRIME DP - Unbound Medicine ER -