Patient With Presyncope and Variable PR Interval and QRS Morphology.
Alex Bittner1, Alejandro Paredes1, Ismael Vergara1
1Department of Cardiology, Pontificia Universidad Católica de Chile, Santiago de Chile, Chile.
JACC. Case Reports
|September 10, 2021
Summary
A 72-year-old female experienced presyncope due to a variable PR interval and changing QRS morphology on her electrocardiogram. This case highlights important diagnostic considerations for irregular heart rhythms.
Area of Science:
- Cardiology
- Clinical Electrocardiography
Background:
- Presyncope is a concerning symptom requiring thorough cardiac evaluation.
- Electrocardiogram (ECG) abnormalities, such as variable PR intervals and changing QRS morphology, can indicate underlying arrhythmias.
Purpose of the Study:
- To present a case of presyncope associated with specific ECG findings.
- To discuss the differential diagnosis for such presentations.
Main Methods:
- Case report of a 72-year-old female patient.
- Electrocardiogram analysis revealing variable PR interval and changing QRS morphology.
- Review of potential etiologies and diagnostic pathways.
Main Results:
- The patient presented with presyncope.
- Electrocardiogram demonstrated a variable PR interval and dynamic QRS changes.
- Differential diagnoses were considered based on the clinical presentation and ECG findings.
Conclusions:
- Variable PR interval and changing QRS morphology on ECG can be associated with presyncope.
- A systematic approach to differential diagnosis is crucial for managing patients with these findings.
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