Effects of Epidural Lidocaine on the Pharmacokinetic and Pharmacodynamic Profiles of DepoDur® After Cesarean Delivery

Epidural Analgesia, Obstetric Clinical Trial

Official title:

A Study to Evaluate the Effects of Epidural Lidocaine Administration on the Pharmacokinetic and Pharmacodynamic Profiles of DepoDur® (Morphine Sulfate Extended-release Injection) in Patients Undergoing Cesarean Delivery

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT00804609
• Other study ID #: SU-07022008-1228
• Status: Completed
• Phase: N/A
• First received: October 23, 2008
• Last updated: September 11, 2017
• Start date: September 2008
• Est. completion date: December 2010

Study information

• Verified date: September 2017
• Source: Stanford University
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

To evaluate the levels of morphine in a patient's blood when morphine is given into the epidural space in the form of DepoDur® either alone or following a dose of lidocaine also given in the epidural space.

Description:

To evaluate the levels of morphine in a patient's blood when morphine is given into the epidural space in the form of DepoDur® either alone or following a dose of lidocaine also given in the epidural space. Specifically, we are looking at pregnant women undergoing cesarean delivery who will be receiving these medications. A secondary objective is to evaluate how well DepoDur® works for pain control, as well as its safety, when it is given either alone or following a dose of epidural lidocaine.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 30
• Est. completion date: December 2010
• Est. primary completion date: December 2010
• Accepts healthy volunteers: No
• Gender: Female
• Age group: 18 Years to 40 Years

Eligibility

Inclusion Criteria:

Inclusion criteria will include healthy parturients between the ages of 18 and 40 who have American Society of Anesthesiologists physical status I or II, have an uncomplicated, singleton, term pregnancy, and are scheduled to undergo cesarean delivery.

Exclusion Criteria:

Exclusion criteria for the study will included refusal to participate, American Society of Anesthesiologists physical status III or higher or any severe uncontrolled medical condition, significant systemic medical or obstetric disease, morbid obesity, opioid, Nonsteroidal Antiinflammatory Drug (NSAID), or local anesthetic allergy or intolerance, chronic analgesic or antidepressant use, accidental dural puncture, ineffective spinal or epidural, and conversion to general anesthesia.

Related Conditions & MeSH terms

• Epidural Analgesia, Obstetric

Intervention

Drug:
• DepoDur following epidural lidocaine
All participant underwent cesarean delivery. An epidural "top-up" anesthetic consisting of 2% lidocaine with epinephrine 1:200,000 and sodium bicarbonate (1 meq per 10 mL lidocaine) was given. The lidocaine solution was administered in 5 mL increments every 2.5 minutes until a T6 sensory level to touch was attained. Patients also received a 100 mcg dose of fentanyl epidurally after the lidocaine solution had been administered. Provided delivery had occurred at least 60 minutes after the initial lidocaine administration, patients received EREM 8 mg (DepoDur™) administered through the epidural catheter. A 2 mL epidural saline flush was administered before and after drug administration.
• DepoDur following spinal anesthetic
Participants underwent an elective cesarean delivery with a combined spinal/epidural. All patients received 12 mg hyperbaric bupivacaine with 20 mcg fentanyl administered intrathecally. No local anesthetic was administered through the catheter. The combined spinal-epidural was performed at the L2/L3 or L3/L4 interspace and the intrathecal dose was injected over 5-10 s. A multiple orifice epidural catheter was threaded 5 cm into the epidural space. Provided delivery had occurred 60 minutes after the intrathecal dose patients received EREM 8 mg (DepoDur™) through the epidural catheter. A 2 mL epidural saline flush was administered before and after drug.

Locations

Country	Name	City	State
United States	Stanford University School of Medicine	Stanford	California

Sponsors (1)

Lead Sponsor	Collaborator
Stanford University

Country where clinical trial is conducted

United States, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Maximum Plasma Concentration (Cmax) of Extended Release Epidural Morphine (EREM)	The primary end point was to evaluate the pharmacokinetic profiles of EREM after either no epidural lidocaine or after an epidural lidocaine top-up for cesarean delivery.	a plasma sample at 0, 5, 10, 15, and 30 minutes, and 1, 4, 8, 12, 24, 36, 48, and 72 hours post-dose