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Pre-hospital rule-out of non-ST-segment elevation acute coronary syndrome by a single troponin: final one-year outcomes of the ARTICA randomised trial.
European Heart Journal. Quality of Care & Clinical Outcomes 2024 January 18
BACKGROUND AND AIMS: The healthcare burden of acute chest pain is enormous. In the randomised ARTICA trial we showed that pre-hospital identification of low-risk patients and rule-out of non-ST-segment elevation acute coronary syndrome (NSTE-ACS) with point-of-care (POC) troponin measurement reduces 30-day healthcare costs with low major adverse cardiac events (MACE) incidence. Here we present the final one-year results of the ARTICA trial.
METHODS: Low-risk patients with suspected NSTE-ACS were randomised to pre-hospital rule-out with POC troponin measurement or emergency department (ED) transfer. Primary one-year outcome was healthcare costs. Secondary outcomes were safety, quality of life (QoL) and cost-effectiveness. Safety was defined as one-year MACE, consisting of ACS, unplanned revascularisation or all-cause death. QoL was measured with EuroQol-5D-5 L questionnaires. Cost-effectiveness was defined as one-year healthcare costs difference per QoL difference.
RESULTS: Follow-up was completed in all 863 patients. Healthcare costs were significantly lower in the pre-hospital strategy (€1932±€2784 vs €2649±€2750), mean difference €717 (95% confidence interval [CI] €347 to €1087; P < 0.001). In the total population, one-year MACE rate was comparable between groups (5.1% [22/434] in the pre-hospital strategy vs 4.2% [18/429] in the ED strategy; P = 0.54). In the ruled-out ACS population, one-year MACE remained low (1.7% [7/419] vs 1.4% [6/417]), risk difference 0.2% (95% CI -1.4% to 1.9%; P = 0.79). QoL showed no significant difference between strategies.
CONCLUSIONS: Pre-hospital rule-out of NSTE-ACS with POC troponin testing in low-risk patients is cost-effective, expressed by a sustainable healthcare costs reduction and no significant effect on QoL. One-year MACE remained low for both strategies. Trial registration: Clinicaltrials.gov: NCT05466591, International Clinical Trials Registry Platform: NTR7346.
METHODS: Low-risk patients with suspected NSTE-ACS were randomised to pre-hospital rule-out with POC troponin measurement or emergency department (ED) transfer. Primary one-year outcome was healthcare costs. Secondary outcomes were safety, quality of life (QoL) and cost-effectiveness. Safety was defined as one-year MACE, consisting of ACS, unplanned revascularisation or all-cause death. QoL was measured with EuroQol-5D-5 L questionnaires. Cost-effectiveness was defined as one-year healthcare costs difference per QoL difference.
RESULTS: Follow-up was completed in all 863 patients. Healthcare costs were significantly lower in the pre-hospital strategy (€1932±€2784 vs €2649±€2750), mean difference €717 (95% confidence interval [CI] €347 to €1087; P < 0.001). In the total population, one-year MACE rate was comparable between groups (5.1% [22/434] in the pre-hospital strategy vs 4.2% [18/429] in the ED strategy; P = 0.54). In the ruled-out ACS population, one-year MACE remained low (1.7% [7/419] vs 1.4% [6/417]), risk difference 0.2% (95% CI -1.4% to 1.9%; P = 0.79). QoL showed no significant difference between strategies.
CONCLUSIONS: Pre-hospital rule-out of NSTE-ACS with POC troponin testing in low-risk patients is cost-effective, expressed by a sustainable healthcare costs reduction and no significant effect on QoL. One-year MACE remained low for both strategies. Trial registration: Clinicaltrials.gov: NCT05466591, International Clinical Trials Registry Platform: NTR7346.
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