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- Title
An interesting electrocardiogram caused by lead reversal.
- Authors
Li, Changjun; Wang, Nan; Chang, Qinghua; Pan, Dianzhu
- Abstract
Background: During normal sinus rhythm, atrial depolarization is conducted from right atrium to left atrium through Bachmann's bundle, and a normal P wave axis which is measured on the frontal plane is between 0º and + 75º. The change of P wave polarity is helpful for the analysis of origin point. Case presentation: We report a patient with negative P wave in lead I. The characteristics of QRS complex in leads V1 to V6 are helpful to preliminarily differential diagnosis. The 12-lead electrocardiogram (ECG) with correct limb leads (right arm-left arm) placement shows sinus rhythm with complete right bundle branch block (RBBB). Conclusions: The change of P wave polarity as well as characteristics of QRS complex can help identify limb-lead reversals.
- Subjects
BUNDLE-branch block; RIGHT heart atrium; LEFT heart atrium; ELECTROCARDIOGRAPHY
- Publication
BMC Cardiovascular Disorders, 2024, Vol 24, Issue 1, p1
- ISSN
1471-2261
- Publication type
Case Study
- DOI
10.1186/s12872-024-03875-2