Left axis deviation (LAD) is a condition whereby the mean electrical axis of ventricular contraction of the heart lies in a frontal plane direction between -30Â° and -90Â°. This is reflected by a QRS complex positive in lead I and negative in leads aVF and II.
Package (or thick envelope) A package is a parcel (or box) less than 84 inches when you add the length plus girth. Length is the longest side of a package. Girth is the distance around the 2 smaller sides of a package. A thick envelope is a large envelope exceeding 3/4 inch thickness.
Shipping rate is determined by package weight, shipping distance (determines the shipping Zones), and the rate tier (Retail, Online Rate, and ShippingEasy Rate). Postal Office (Retail) is the price you will get if you purchase the label for your Priority Mail shipment at a physical USPS Retail location.