Description
The Lewis lead configuration can help to detect atrial activity and its relationship to ventricular activity. Named after Welsh cardiologist Sir Thomas Lewis (1881-1945) developed and described (1913) his lead configuration to magnify atrial oscillations present during atrial fibrillation.
Useful in:
- Observing flutter waves in atrial flutter
- Detecting P waves in wide complex tachyarrhythmia to identify atrioventricular dissociation
Lewis lead placement
- Right Arm (RA)electrode on manubrium
- Left Arm (LA) electrode over 5th ICS, right sternal border.
- Left Leg (LL) electrode over right lower costal margin.
- Monitor Lead I
Associated Persons
- Sir Thomas Lewis (1881-1945)
Alternative names
- S5-lead placement
References
- Lewis T. Auricular fibrillation. In: Clinical Electrocardiography. 1913: 86-97
- ECG Linrary. ECG Lead positioning
- Bakker AL et al. The Lewis lead: making recognition of P waves easy during wide QRS complex tachycardia. Circulation. 2009 Jun 23;119(24):e592-3
- Huemer M et al. The Lewis Lead for Detection of Ventriculoatrial Conduction Type. Clin. Cardiol. 2016; 39(2): 126–131
- Connelly K. Diagnostics: Alternative EKG Leads Tamig the SRU 2019
eponymictionary
the names behind the name
Emergency physician MA (Oxon) MBChB (Edin) FACEM FFSEM with a passion for rugby; medical history; medical education; and informatics. Asynchronous learning #FOAMed evangelist. Co-founder and CTO of Life in the Fast lane
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