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

Table 1

Cohort characteristics ( mepivacaine spinal anesthetics).

Age (in years; median, IQR)	61	71
Sex (n male, %)	336	49%
Height (cm; median, IQR)	168	161–177
Weight (kg; median, IQR)	86	71–100
BMI (kg/m^2; median, IQR)	29	25–35
Mepivacaine volume (mL; n, %)
≤1.5	81	13%
1.6–2.0	64	9%
2.1–2.5	178	26%
2.6–3.0	336	49%
>3	20	3%
Spinal position (n, %)
Sitting	670	99%
Lateral	9	1%
Spinal approach (n, %)
Midline	660	97%
Paramedian	19	3%
Spinal level (n, %)
L2-L3	58	8%
L3-L4	466	69%
L4-L5	153	23%
Not defined	2	0%
Spinal needle type (n, %)
Quincke	6	1%
Sprotte	10	1%
Whitacre	663	98%
Spinal needle Gauge (n, %)
<24	26	4%
25	641	94%
27	11	2%
Not defined	1	0%
Surgical procedure (n, %)
General surgery
Inguinal hernia repair	4	1%
Orthopedics
Ankle
Arthroscopy	29	4%
Fusion	2	0%
Hardware removal	56	8%
ORIF	45	7%
Tendon repair	24	4%
Foot
1st MTP surgery	36	5%
Reconstruction	60	9%
Hip
Arthroplasty	4	0%
Arthroscopy	6	1%
Knee
Arthroplasty	68	10%
Arthroscopy
Bilateral	31	5%
Unilateral	226	33%
Hardware removal	39	6%
ORIF	13	2%
Plastic surgery
Soft tissue surgery	10	1%
Urology
Cystoscopy or cystolithopaxy	12	2%
TURP or TURBT	14	2%
Intraoperative position (n, %)
Knee arthroscopy	257	38%
Lateral	17	2%
Lithotomy	27	4%
Prone	7	1%
Supine	371	55%

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.