Ultrasound-assisted Versus Conventional Landmark-guided Spinal Anesthesia in Patients With Abnormal Spinal Anatomy

Seoul National University

Status: Completed

Conditions: Ultrasonography; Anesthesia, Spinal; Scoliosis

Treatments: Drug: 0.5% heavy bupivacaine; Procedure: Ultrasound-assisted paramedian spinal anesthesia; Procedure: Landmark-guided spinal anesthesia

Study type: Interventional

Funder types: Other

Identifiers

NCT03459105

1801-107-917

Details and patient eligibility

About

Spinal anesthesia can be challenging in patients with lumbar scoliosis or previous lumbar spine surgery. This study aims to evaluate whether the use of the ultrasound-assisted spinal anesthesia reduces the number of passes required to successful dural puncture compared with the conventional surface landmark-guided technique in patients with abnormal spinal anatomy.

Enrollment: 44 patients

Sex: All

Ages: 18+ years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Adult patients scheduled to undergoing elective orthopedic surgery under spinal anesthesia,

• with ASA physical status classification I, II, III,

• and with (1) or (2)

  1. documented scoliosis in preoperative L-S-Spine X-ray (Cobb abgle > 10 degree)
  2. previous history of lumbar spinal surgery

Exclusion criteria

• Patients with contraindication to spinal anesthesia (coagulopathy, local infection, allergy to local anesthetic)
• Patients with morbid cardiac diseases
• Pregnancy

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Double Blind

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44 participants in 2 patient groups

Ultrasound-assisted

Experimental group

Description:

Preprocedural ultrasound-assisted paramedian spinal anesthesia will be performed. 0.5% heavy bupivacaine will be injected to intrathecal space for spinal anesthesia.

Treatment:

Procedure: Ultrasound-assisted paramedian spinal anesthesia

Drug: 0.5% heavy bupivacaine

Landmark-guided

Active Comparator group

Description:

Landmark-guided spinal anesthesia will be performed, via either midline or paramedian approach. 0.5% heavy bupivacaine will be injected to intrathecal space for spinal anesthesia.

Treatment:

Procedure: Landmark-guided spinal anesthesia

Drug: 0.5% heavy bupivacaine