Left Ventricle — ECG/EKG Terminology

Definition: The lower left chamber that pumps oxygenated blood to the body via the aorta. It has the thickest myocardium.

Key Facts

• Main pumping chamber for systemic circulation and perfusion pressure.
• Has the thickest myocardium due to high systemic afterload.
• Dysfunction causes reduced cardiac output and heart failure symptoms.

ECG Connection: Left ventricular hypertrophy and ischemia can alter QRS voltage and ST-T morphology.

Why It Matters: Telemetry trends may reveal worsening ischemia or strain in high-risk patients.