Efficacy of Diagnostic Testing of Suspected Coronary Artery Disease: A Contemporary Review
Related Experiment Video
Updated: Jun 21, 2025
Signal Acquisition, Score Interpretation, and Economics of a Non-Invasive Point-of-Care Test for Coronary Artery Disease
Published on: August 9, 2024
Edward Woods1, Josiah Bennett1, Sanjay Chandrasekhar1
1Department of Internal Medicine, Emory University, Atlanta, Georgia, USA.
Insights
Physicians should stratify patients for coronary artery disease (CAD) testing based on pretest probability. This approach optimizes diagnostic accuracy and resource allocation for suspected CAD.
Area of Science:
- Cardiology
- Diagnostic Imaging
- Preventive Medicine
Background:
- Coronary artery disease (CAD) is a leading cause of myocardial ischemia and acute coronary syndrome.
- Early diagnosis of CAD is crucial for effective risk factor modification and treatment.
Purpose of the Study:
- To review available diagnostic testing modalities for CAD.
- To detail the risks and benefits associated with each testing method.
- To provide guidance on selecting appropriate tests for patients with suspected CAD.
Main Methods:
- Risk stratification based on pretest probability using clinical data and symptoms.
- Categorization of patients into no further testing, direct invasive angiography, or intermediate risk stratification groups.
- Utilizing non-invasive tests like coronary artery calcium score and exercise electrocardiogram for intermediate risk.
Main Results:
- Patients with <5% pretest probability require no further testing.
- Patients with high pretest probability may undergo direct invasive coronary angiography.
- Intermediate-risk patients (5-15% probability) benefit from further risk stratification using coronary artery calcium score or exercise ECG.
Conclusions:
- Coronary computed tomography angiography is preferred for intermediate-high-risk patients, with positron emission tomography or single-photon emission computed tomography as alternatives.
- Selection of testing modality should consider individual patient characteristics and institutional availability.
- Judicious use of CAD testing balances diagnostic utility against cost and procedural risks.
Background:
Coronary artery disease (CAD) is a highly prevalent condition which can lead to myocardial ischemia as well as acute coronary syndrome. Early diagnosis of CAD can improve patient outcomes through guiding risk factor modification and treatment modalities.
Summary:
Testing for CAD comes with increased cost and risk; therefore, physicians must determine which patients require testing, and what testing modality will offer the most useful data to diagnose patients with CAD. Patients should have an initial risk stratification for pretest probability of CAD based on symptoms and available clinical data. Patients with a pretest probability less than 5% should receive no further testing, while patients with a high pretest probability should be considered for direct invasive coronary angiography. In patients with a pretest probability between 5 and 15%, coronary artery calcium score and or exercise electrocardiogram can be obtained to further risk stratify patients to low-risk versus intermediate-high-risk. Intermediate-high-risk patients should be tested with coronary computed tomography angiography (preferred) versus positron emission tomography or single photon emission computed tomography based on their individual patient characteristics and institutional availability.
Key Messages:
This comprehensive review aimed to describe the available CAD testing modalities, detail their risks and benefits, and propose when each should be considered in the evaluation of a patient with suspected CAD.
Background:
Coronary artery disease (CAD) is a highly prevalent condition which can lead to myocardial ischemia as well as acute coronary syndrome. Early diagnosis of CAD can improve patient outcomes through guiding risk factor modification and treatment modalities.
Summary:
Testing for CAD comes with increased cost and risk; therefore, physicians must determine which patients require testing, and what testing modality will offer the most useful data to diagnose patients with CAD. Patients should have an initial risk stratification for pretest probability of CAD based on symptoms and available clinical data. Patients with a pretest probability less than 5% should receive no further testing, while patients with a high pretest probability should be considered for direct invasive coronary angiography. In patients with a pretest probability between 5 and 15%, coronary artery calcium score and or exercise electrocardiogram can be obtained to further risk stratify patients to low-risk versus intermediate-high-risk. Intermediate-high-risk patients should be tested with coronary computed tomography angiography (preferred) versus positron emission tomography or single photon emission computed tomography based on their individual patient characteristics and institutional availability.
Key Messages:
This comprehensive review aimed to describe the available CAD testing modalities, detail their risks and benefits, and propose when each should be considered in the evaluation of a patient with suspected CAD.
Related Concept Videos
01:17Imaging Studies for Cardiovascular System I:Echocardiography
Indications: Echocardiography is utilized to diagnose heart failure, valve disorders, and myocardial infarction. It also assesses cardiac structures' size, shape, and motion,...
01:26Exercise Stress Test
Exercise stress testing, commonly known as a treadmill test, is a noninvasive procedure used to evaluate cardiovascular function and diagnose heart conditions.
Definition
An exercise stress test measures the heart's response to exertion using a treadmill or stationary bicycle. Chest electrodes record the heart's electrical activity through an ECG, and blood pressure is monitored regularly.
Purposes
01:20Imaging Studies for Cardiovascular System III: X-Ray
Definition and Purpose
An X-ray, or radiograph, is a non-invasive method that uses ionizing radiation to take images of internal structures. It is mainly used in cardiac imaging to examine the heart, lungs, and major blood vessels, aiming to identify abnormalities in the heart's size, shape, and position, such as heart failure, congenital defects, and vascular...
01:20Blood Studies for Cardiovascular System I: Cardiac Biomarkers
The essential diagnostic tools for detecting myocardial necrosis and monitoring individuals suspected of having acute coronary syndrome (ACS) include:
Troponins
Troponins, particularly cardiac troponins I and T, are the most precise and sensitive markers of myocardial injury. They are detectable within 4-6 hours of myocardial injury and remain...
01:20Imaging Studies for Cardiovascular System II:Types of Echocardiography
Types of Echocardiography
Transthoracic Echocardiography (TTE)
TTE is the most common type of echocardiogram which involves placing a transducer on the patient's chest, emitting sound waves to create heart images. TTE is invaluable for evaluating the heart's size, structure, and motion, making it particularly useful for...
01:15Myasthenia Gravis: Diagnostic Tests
The edrophonium test is a diagnostic tool for myasthenia gravis. It involves...