Transient Neurologic Symptoms following Spinal Anesthesia with Isobaric Mepivacaine: A Decade of Experience at Toronto Western Hospital

Table 2

Characteristics of excluded records ( mepivacaine spinal anesthetics).

Age (in years; median, IQR)	54	44–63
Sex (n male, %)	190	56%
Height (cm; median, IQR)	171	164–179
Weight (kg; median, IQR)	93	74–110
BMI (kg/m^2; median, IQR)	31	25–38
Mepivacaine volume (mL; n, %)
≤1.5	22	7%
1.6–2.0	17	5%
2.1–2.5	82	24%
2.6–3.0	213	63%
>3	5	1%
Spinal position (n, %)
Sitting	338	100%
Lateral	1	0%
Spinal approach (n, %)
Midline	331	98%
Paramedian	8	2%
Spinal level (n, %)
L2-L3	25	7%
L3-L4	232	68%
L4-L5	79	24%
Not defined	3	1%
Spinal needle type (n, %)
Quincke	2	0%
Sprotte	6	2%
Whitacre	331	98%
Spinal needle Gauge (n, %)
<24	13	4%
25	323	95%
27	1	0%
Not defined	2	1%
Surgical procedure (n, %)
General Surgery
Inguinal hernia repair	3	1%
Orthopedics
Ankle
Arthroscopy	40	12%
Fusion	7	2%
Hardware removal	26	8%
ORIF	36	11%
Tendon repair	11	3%
Foot
1st MTP surgery	6	2%
Reconstruction	10	3%
Hip
Arthroplasty	0	0%
Arthroscopy	4	1%
Knee
Arthroplasty	33	10%
Arthroscopy
Bilateral	7	2%
Unilateral	122	36%
Hardware removal	11	3%
ORIF	10	3%
Plastic Surgery
Soft tissue surgery	5	2%
Urology
Cystoscopy or cystolithopaxy	2	0%
TURP or TURBT	6	2%
Intraoperative position (n, %)
Knee arthroscopy	129	38%
Lateral	8	2%
Lithotomy	7	2%
Prone	3	1%
Supine	192	57%

BMI = body mass index; MTP = metatarsal-phalangeal joint; ORIF = open reduction internal fixation; TURBT = transurethral resection of bladder tumor; TURP = transurethral resection of the prostate; carcinoma excision, hematoma evacuation, and skin graft excision.