Table 1.

Demographics of Patients Receiving Low-Dose Ketamine Infusions

Prior Diagnosis	Chronic pain	46 (48.4%)
	Depression	29 (30.5%)
	Psychotic disorder	2 (2.1%)
Type of procedure	No procedure	6 (6.3%)
	Abdominal surgery	55 (57.9%)
	Spine surgery	25 (26.3%)
	Orthopedic surgery	6 (6.3%)
	Urology procedure	1 (1.1%)
	Gynecologic surgery	1 (1.1%)
	Head and neck surgery	1 (1.1%)
Average age (years)		53.9
Gender	Male	38 (40%)
	Female	57 (60%)
Average weight, BMI		79.9 kg, BMI 27.7
ASA class	1	5 (5.3%)
	2	45 (47.9%)
	3	42 (44.7%)
	4	2 (2.1%)
Patients on opioid therapy prior to infusion		52 (54.7%)

Abbreviation: ASA, American Society of Anesthesiologists.