HEART Score Calculator

The HEART score sums individual point values assigned to five clinical variables, with each variable scored from 0 to 2 points. The total score ranges from 0 to 10. The core equation is expressed as: HEART Score = History + ECG + Age + Risk Factors + Troponin. History is evaluated as highly suspicious (2), moderately suspicious (1), or slightly suspicious (0). ECG findings receive 2 points for significant ST-segment depression, 1 point for non-specific repolarization disturbance, and 0 points for normal. Age categories allocate 0 points for under 45, 1 point for 45-65, and 2 points for over 65. Risk factors award points based on the presence of atherosclerosis indicators. Troponin levels yield points depending on whether they are elevated significantly, moderately, or within normal limits.

Consider a 58-year-old patient presenting to the emergency department with intermittent atypical chest pain. Let us walk through the point allocation: First, Age is 58, which falls into the 45-65 bracket, yielding 1 point. Second, the patient's chest pain history is classified as moderately suspicious, adding 2 points. Third, the initial ECG shows non-specific repolarization disturbances, contributing 1 point. Fourth, the patient has a history of treated hypertension and smoking, counting as multiple risk factors for 2 points. Fifth, the initial troponin blood test returns a normal result within baseline limits, giving 0 points. Summing these values together: 1 + 2 + 1 + 2 + 0 results in a total HEART score of 6, placing the patient in the moderate-risk category requiring close clinical observation and further diagnostic workup.

Always utilize the HEART score in conjunction with professional clinical judgment rather than as a standalone diagnostic absolute. Ensure that serial troponin testing is performed according to institutional protocols if the initial reading is negative but clinical suspicion remains elevated. Accurately document all baseline cardiovascular risk factors, including hyperlipidemia, diabetes mellitus, hypertension, smoking, and a positive family history of coronary artery disease.