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[Electrocardiographic changes during coronarography]
Insights
Coronary angiography can cause temporary heart rhythm disturbances. Monitoring electrocardiogram (ECG) changes helps manage these risks in patients with ischemic heart disease.
Area of Science:
- Cardiology
- Electrophysiology
Background:
- Intracoronary contrast administration during coronary angiography can trigger myocardial repolarization and cardiac rhythm disturbances.
- First-generation contrast agents pose a particular risk for these electrophysiological alterations.
Purpose of the Study:
- To evaluate transient electrophysiological changes in the myocardium during and after coronary angiography.
- To identify specific electrocardiogram (ECG) changes associated with the procedure.
Main Methods:
- Holter dynamic ECG monitoring was performed on 39 patients with ischemic heart disease (II-III functional classes).
- ECG changes were systematically detected and analyzed during and after coronary angiography.
Main Results:
- Arrhythmias, conduction disturbances, and transient myocardial ischemia were observed.
- The study identified specific ECG alterations indicative of procedural impact.
Conclusions:
- Coronary angiography can induce temporary electrophysiological disturbances.
- Dynamic ECG monitoring allows for timely detection and assessment of these changes, informing pharmacological correction strategies.
Abstract:
The endocardial manipulations and bolus intracoronary administration of contrast substances, of the first generation in particular, can induce disturbances of the myocardium repolarization and different disturbances of the cardiac rhythm, life-threatening included. The aim of the investigation is to assess transitory electrophysiological alterations in the myocardium during coronarography and during the first day after it. Under examination there were 39 patients with ischemic heart disease and stenocardia of the II-III functional classes in whom the coronarography was performed according to clinical indications. The Holtner dynamic observation of ECG was made in all the patients. All the ECG changes were detected and estimated during coronarography: arrhythmias, disturbances of conduction and transitory ischemic alterations of the myocardium. It gives a possibility to decide between the methods of pharmacological correction of possible disturbances.