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Merck Manual
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Cardiology
Cardiovascular Tests and Procedures
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Overview of Cardiovascular Tests and Procedures
Electrocardiography
Standard ECG Components
P wave
PR interval
QRS complex
QT interval
ST segment
T wave
U wave
Specialized ECG Tests
Additional precordial leads
Esophageal lead
Signal averaging
QT dispersion
Heart rate variability
Holter monitor
Event recorder
Other event monitoring devices
Smartwatches, wearable fitness and health technology, and other consumer devices with ECG capability
References
More Information
Echocardiography
Techniques
Methodology
Stress echocardiography
References
Cardiac Imaging Tests
Chest Radiography in Cardiac Diagnosis
Computed Tomography (CT) in Cardiac Diagnosis
CT in cardiac diagnosis references
Cardiac Magnetic Resonance Imaging (MRI)
Radionuclide Imaging
Radionuclide imaging reference
Cardiac Radionuclide Imaging
Modes of Cardiac Radionuclide Imaging
Single-Photon Emission Computed Tomography (SPECT)
Positron Emission Tomography (PET)
Functional Applications of Cardiac Radionuclide Imaging
Myocardial Perfusion Imaging
Infarct Avid, Cardiac Infiltration, and Other Myocardial Imaging
Radionuclide Ventriculography
Cardiac Stress Testing
General reference
Stress Test Methodology
Exercise stress testing
Pharmacologic stress testing
Stress test methodology references
Stress Test Diagnostic Imaging Methodology
Electrocardiography (ECG)
Echocardiography
Radionuclide myocardial perfusion imaging
Cardiac MR
Stress test diagnostic imaging methodology references
Tilt Table Testing
General reference
Procedure
Contraindications
Interpretation
Interpretation references
Cardiac Catheterization
Procedure
Left heart catheterization
Right heart catheterization
Procedure references
Specific Tests During Cardiac Catheterization
Angiography
Coronary artery flow measurements
Intravascular ultrasound (IVUS)
Optical coherence tomography (OCT)
Tests for cardiac shunts
Measurement of cardiac output and flow
Endomyocardial biopsy
Pulmonary vasodilator testing
Tests during cardiac catheterization references
Contraindications to Cardiac Catheterization
Complications of Cardiac Catheterization
Contrast agent complications
Catheter-related complications
Access site complications
Complications references
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Electrophysiologic Studies (EPS)
Reference