Local anesthetics (LA) 3

Question 1

LAs Can be used for surgical procedures diagnosis and Pain management?

Answer 1

lidocaine, procaine or mepivacaine and tetracaine

Nerve block technique

Question 2

LAs injected around single nerve or nerve plexus to provide greater area of as anesthesia at small doses

as( brachial plexus anesthesia for procedures in shoulder, upper limb)

Answer 2

lidocaine, procaine or mepivacaine and tetracaine

Nerve block technique

Question 3

Technique of Local anesthesia injected into subarachnoid space and used in operations of the lower limbs and lower abdomen?

Answer 3

Spinal
(subarachnoid or
intrathecal)

Question 4

Upward passage of anesthetic agent in Spinal technique depend on…………………..and……………………..?

Answer 4

• position of the patient
• specific gravity of anesthetic soln.

Question 5

T/ F : Anesthetic agent is injected into subarachnoid space through intervertebral spaces between 1st & 2nd lumbar vertebrae
in Spinal technique

Answer 5

F / between 2nd & 5th

Question 6

Hyperbaric solution ( adding of glucose) has higher specific gravity than CSF so the direction of solution is?

Answer 6

descend distally

Question 7

hypobaric solution ( adding saline or water) has lower specific gravity than CSF so the direction of solution is?

Answer 7

ascend proximally

Question 8

Mention the adverse effects of Spinal
(subarachnoid or intrathecal) technique?

Answer 8

1- Decrease in the blood pressure due to paralysis of sympathetic out from the spinal cord which cause vasodilation of blood vessels.

2- Neurological complications: postural headache, numbness, hematoma, septic meningitis

Question 9

hypotension during spinal anesthesia can be managed by?

Answer 9

• Positioning of the patient in head down position

-Administration of oxygen, fluids and IV vasoconstrictor agent such as phenylephrine, ephedrine