Obstetric Placement Study Using EST

Stanford University

Status: Enrolling

Conditions: Obstetric Pain; Anesthesia, Local

Treatments: Diagnostic Test: Electrical Epidural Stimulation Test (EST)

Study type: Interventional

Funder types: Other

Identifiers

NCT04109365

52856

Details and patient eligibility

About

Combined spinal-epidural (CSE) is an established technique for providing labour analgesia to obstetric patients which provides rapid onset but unsustained analgesia. The epidural catheter can be used to extend and provide continuous pain relief, however during single-segment needle-through-needle CSE, the catheter is untested. This study aims to confirm placement of epidural catheters of anesthesia through the epidural stimulation test (EST) which was first described by the PI of the study for confirming placement of epidural catheters approximately 20 years ago.

Enrollment: 40 estimated patients

Sex: Female

Ages: 18+ years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Females, 18 years and older
• American Society of Anesthesiologists physical status I or II
• Full-term pregnancy with request for epidural early in labour (i.e. Regular labor or C-Section)

Exclusion criteria

• Contraindication to regional anesthesia
• Allergy or hypersensitivity to lidocaine, bupivacaine, or fentanyl
• Use of sedatives or opioids
• Abnormal vertebrae anatomy
• Neurological disorder with lumbar involvement
• Implanted electronic devices

Trial design

Primary purpose: Diagnostic

Allocation: N/A

Interventional model: Sequential Assignment

Masking: None (Open label)

---

40 participants in 1 patient group

Electrical Epidural Stimulation Test (EST)

Experimental group

Description:

Laboring women are given EST test initially before local anesthetic is administered and 1 hour post-anesthetic in order to measure sensory and motor responses.

Treatment:

Diagnostic Test: Electrical Epidural Stimulation Test (EST)