Dextrose is added to the spinal anesthetic drugs to
Correct Answer: Increase specific gravity
Description: By adding dextrose we maKe local anaesthetic hyperbaric and prevent uncontrolled ascending of local anaesthetics The local anesthetic solutions can be made hyperbaric by the addition of glucose or hypobaric by the addition of sterile water or fentanyl. A hyperbaric solution of local anesthetic is denser (heavier) than CSF, whereas a hypobaric solution is less dense (lighter) than CSF. Significance: Hyperbaric solutions tend to move to the most dependent area of the spine. With the patient in a head-down position, a hyperbaric solution spreads cephalad, and a hypobaric anesthetic solution moves caudal. A head-up position causes a hyperbaric solution to settle caudally and a hypobaric solution to ascend cephalad. An isobaric solution tends to remain at the level of injection.
Category:
Anaesthesia
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