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.
The USPS utilizes zone-based pricing for all Standard Post package shipping. There are 9 zones in the U.S. and prices are based on the distance from the original package location to the delivery destination. Prices start at $5.75 for a one pound package. Also, Standard Post is subject to USPSâs balloon pricing.