Normal QRS axis ?
Correct Answer: -30 to +110deg
Description: Ans. is 'b' i.e., -30 to +110deg In a normal hea, the average direction of the vector during spread of the depolarization wave through the ventricles, called the mean QRS vector, is about +59 degrees. This means that during most of the depolarization wave, the apex of the hea remains positive with respect to the base of the hea. The normal electrical axis of the hea (mean electrical axis or mean QRS vector) lies between -30deg and + 100deg. If the axis is more negative than -30deg it is called left axis detion, whereas if the axis is more positive than + 100deg, it is called right axis detion.
Category:
Medicine
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now