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.
USPS packages usually get delivered in two to three business days, while UPS Ground packages might take up to two weeks to be delivered. 3. USPS has strict guidelines in terms of package weight and size, while UPS allows any package size, other than the ones required to be transferred through freight services.