A rapid troponin-I-based protocol for assessing acute chest pain

Area of Science:

• Cardiology
• Emergency Medicine

Background:

• Acute chest pain is a common presentation in emergency departments.
• Accurate diagnosis and risk stratification are crucial for managing patients with non-ST-elevation acute coronary syndromes.

Purpose of the Study:

• To compare a troponin-I-based protocol with standard management for diagnosing and stratifying patients with acute non-ST-elevation chest pain.
• To evaluate the impact of the troponin-I protocol on length of CCU stay and major adverse cardiac events (MACE).

Main Methods:

• Prospective randomized open trial with 400 patients.
• Patients randomized to standard care or a troponin-I protocol using admission ECG and troponin-I levels at 6 hours.
• Follow-up for MACE (death, MI, urgent revascularization) during admission and for 30 days post-discharge.

Main Results:

• The troponin-I protocol allowed significantly earlier discharge for low-risk patients (10 vs. 30 hours, p<0.001) with no increase in MACE (3% vs. 5%, p=0.32).
• The protocol demonstrated higher accuracy in identifying moderate (15% MACE) and high-risk (75% MACE) patient groups.
• Troponin testing combined with admission ECG showed superior prognostic power compared to either test alone.

Conclusions:

• A troponin-I-based protocol enhances the efficiency of managing low-risk patients with acute chest pain.
• This protocol improves risk stratification accuracy, aiding in timely and appropriate patient management.
• Troponin evaluation is a valuable component in the management of acute coronary syndromes.