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.
The diagram below illustrates the relationship between QRS axis and the frontal leads of the ECG. Normal Axis = QRS axis between -30Â° and +90Â°. Left Axis Deviation = QRS axis less than -30Â°. Right Axis Deviation = QRS axis greater than +90Â°.