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 stands for United States Postal Service. USPS First Class Mail is a mail service used to send things in envelopes and packages that weigh up to 13 ounces. The delivery time frame for USPS First Class Mail normally ranges from 2 to 3 business days.