Tear gland: The gland that makes tears. An abnormality of the tear glands can impair the production of the tears and lead to dry eyes.Also called a lacrimal gland.ear gland: The gland that makes tears. An abnormality of the tear glands can impair the production of the tears and lead to dry eyes.
Answer: Left Axis Deviation (LAD) refers to the pattern of electrical activation that occurs in the heart. LAD is an EKG-specific finding and not necessarily indicative of any specific cardiovascular condition. In fact, LAD is the most common EKG abnormality observed in adults, occurring in almost 10% of the adult population.
1 Normal Axis = QRS axis between -30 and +90 degrees. 2  Left Axis Deviation = QRS axis less than -30 degrees. 3  Right Axis Deviation = QRS axis greater than +90 degrees. 4  Extreme Axis Deviation = QRS axis between -90 and 180 degrees (AKA âNorthwest Axisâ). Normal Axis = QRS axis between -30 and +90 degrees. 2  Left Axis Deviation = QRS axis less than -30 degrees. 3  Right Axis Deviation = QRS axis greater than +90 degrees. 4  Extreme Axis Deviation = QRS axis between -90 and 180 degrees (AKA âNorthwest Axisâ).