case continues:
  • Blood pressure rose to 125/80 mm Hg and 115 bpm on induction.
  • Anesthesia was maintained with air, 40% oxygen, and 0.75-1.5% isoflurane.
  • Adequate abdominal muscle relaxation was achieved with vecuronium. Additional fentanyl titrated to 6 micrograms/kg was given.
  • A triple lumen catheter was placed in the left subclavian vein for post-operative TPM.
  • A blood specimen was collected with a hematocrit of 24%.

Based on the pharmacology of ketamine, discuss its advantages and disadvantages in this case.