electrocardiogram: ventricular activation time (VAT) greater than 0.9 seconds in leads V4, V5, and V6
electrocardiogram: ventricular activation time (vat) greater than 0.9 seconds in leads v4, v5, and v6
electrocardiogram: ventricular activation time (VAT) greater than 0.9 seconds in leads V4, V5, and V6 (procedure)
electrocardiogram: ventricular activation time (vat) greater than 0.9 seconds in leads v4, v5, and v6 (procedure)