試題詳解

29. Which of the following statements concerning the difference between phenol and alcohol when used in neurolytic blocks is/are FALSE?.
(A) Phenol takes 15 minutes for neurolysis whereas alcohol’s neurolytic effect is immediate.
(B) Phenol usually does not produce pain on injection.
(C) Intrathecal alcohol is hypobaric, whereas phenol is hyperbaric.
(D) Phenol is approximately twice as efficacious as alcohol..