EDACS Score Calculator

Identifies patients with chest pain or other anginal symptoms at low risk of major adverse cardiac event or ACS.

Refer to the text below the score for more information on its variables and usage.

The Emergency Department Chest Pain Score (EDACS) is a validated diagnostic protocol developed to swiftly identify low-risk patients presenting to ED with chest pain who are unlikely to experience major adverse cardiac events (MACE) and who can be safely discharged with appropriate outpatient follow-up.

With an EKG displaying no fresh ischemia and two negative troponin tests (at 0- and 2-hours), this method exhibits over 99% sensitivity for MACE.

So EDACS effectively reduces patient hospitalization time and triage of low-risk individuals.

EDACS was derived in 2014, where it was assessed alongside another chest pain diagnostic protocol in a prospective randomized controlled trial (RCT).

In the derivation (1974 patients) and validation (608 patients) cohorts, the EDACS-ADP classified 42.2% (sensitivity 99.0%, specificity 49.9%) and 51.3% (sensitivity 100.0%, specificity 59.0%) as low risk of MACE, respectively.

Instruction: This score only applies to patients:
(1) ≥18 years old with normal vital signs;
(2) Chest pain consistent with ACS;
(3) No ongoing chest pain or crescendo angina.
4Pain radiates to arm, shoulder, neck, or jaw
5Pain occurred or worsened with inspiration
6Pain is reproduced by palpation
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Steps on how to print your input & results:

1. Fill in the calculator/tool with your values and/or your answer choices and press Calculate.

2. Then you can click on the Print button to open a PDF in a separate window with the inputs and results. You can further save the PDF or print it.

Please note that once you have closed the PDF you need to click on the Calculate button before you try opening it again, otherwise the input and/or results may not appear in the pdf.


About Emergency Department Assessment of Chest Pain Score

EDACS is a chest pain decision aid tool that can specifically identify patients with low risk of acute coronary syndrome (ACS) or major adverse cardiac event (MACE). EDACS may be used in the emergency departments in triage in an decision making about early discharge of low risk patients.

MACE is defined as any of the following:

    • ST-elevation or non-ST-elevation MI.
    • Need for emergency revascularization
    • Ventricular arrhythmia
    • Cardiogenic shock
    • Cardiac arrest
    • High atrio-ventricular block
    • Death of cardiovascular etiology.

During the original study, a low-risk group of patients (approximately 45% from cohort with 99-199% sensitivity) were identified as safe to be discharged from emergency department after two blood biomarkers (0 and 2-hr troponin testing), EKG, patient history and physical examination, pending close follow-up in a primary care setting. However, other causes of chest pain should be explored prior to discharge.

Patients who do not meet the low-risk criteria (with EDACS score of 16 or more or EKG positive of ischemia or positive troponin) should undergo serial EKG and biomarker testing and the diagnostic protocols should be followed.

The following table introduces the variable used in the EDACS to rule-out or in the low-risk group:

Variable Points
Age 18-45 2
46-50 4
51-55 6
56-60 8
61-65 10
66-70 12
71-75 14
76-80 16
81-85 18
≥86 20
Sex Female 0
Male 6
Diaphoresis No 0
Yes 3
Pain radiates to arm, shoulder, neck, or jaw No 0
Yes 5
Pain occurred or worsened with inspiration No 0
Yes -4
Pain is reproduced by palpation No 0
Yes -6
Known coronary artery disease or ≥3 risk factors
This applies for patients 18-50.
No 0
Yes 4

The low-risk group is identified as EDACS

In the EDACS study cohort, the score correctly identified 45% of patients as low-risk, with higher rates than similar decision aids such as the HEART score, Vancouver Chest Pain Score or GRACE score.

A comparison between EDACS-ADP (with accelerated diagnostic protocol, i.e. use of EKG and biomarkers) and the ADAPT-ADP found that the EDACS identified a higher proportion of low-risk patients (41.6% vs. 30.5%) with both groups having a NPV of 100%. But the primary outcome of the proportion of patients safely discharged within 6 hours was the similar between the two scores (32.3% vs. 34.4% respectively).

Another comparison of EDACS with the HEARTS score, on a retrospective study of 118,822 patients with data collected over 3 years found that whilst both scores correctly identified low-risk 60-day MACE, the EDACS predicted a larger proportion, 60.8% compared to 51.8%.



Original reference

Than M, et al. Emerg Med Australas. Development and validation of the Emergency Department Assessment of Chest pain Score and 2 h accelerated diagnostic protocol. 2014; 26(1):34-44.


Than MP, Pickering JW, Aldous SJ, Cullen L, Frampton CM, Peacock WF, Jaffe AS, Goodacre SW, Richards AM, Ardagh MW, Deely JM, Florkowski CM, George P, Hamilton GJ, Jardine DL, Troughton RW, van Wyk P, Young JM, Bannister L, Lord SJ. Effectiveness of EDACS Versus ADAPT Accelerated Diagnostic Pathways for Chest Pain: A Pragmatic Randomized Controlled Trial Embedded Within Practice. Ann Emerg Med. 2016; 68(1):93-102

Flaws D, Than M, Scheuermeyer FX, Christenson J, Boychuk B, Greenslade JH, Aldous S, Hammett CJ, Parsonage WA, Deely JM, Pickering JW, Cullen L. External validation of the emergency department assessment of chest pain score accelerated diagnostic pathway (EDACS-ADP). Emerg Med J. 2016; 33(9):618-25

Mark DG, Huang J, Chettipally U, Kene MV, Anderson ML, Hess EP, Ballard DW, Vinson DR, Reed ME; Kaiser Permanente CREST Network Investigators. Performance of Coronary Risk Scores Among Patients With Chest Pain in the Emergency Department. J Am Coll Cardiol. 2018; 71(6):606-616

Boyle RSJ, Body R. The diagnostic accuracy of the emergency department assessment of chest pain (Edacs) score: a systematic review and meta-analysis. Ann Emerg Med. 2021; 77(4):433-441.

Specialty: Cardiology

System: Cardiovascular

Objective: Risk Stratification

Type: Decision Aid

No. Of Items: 6

Year Of Study: 2014

Abbreviation: EDACS

Article By: Denise Nedea

Published On: July 8, 2023

Last Checked: July 8, 2023

Next Review: July 8, 2028