NCT05024344 · University of Tennessee Medical Center
ESP Block vs Control for Pain Control Following Percutaneous Nephrolithotomy
What this study is about
The purpose of this study is to investigate the use of the erector spinae (ESP) block in reducing the morphine milligram equivalent (MME) consumption post percutaneous nephrolithotomy. Objectives: 1. \- Determine if there is a significant effect on post percutaneous nephrolithotomy MME consumption with the usage of an ESP block vs. saline control. 2.
View original scientific description
The purpose of this study is to investigate the use of the erector spinae (ESP) block in reducing the morphine milligram equivalent (MME) consumption post percutaneous nephrolithotomy. Objectives: 1. \- Determine if there is a significant effect on post percutaneous nephrolithotomy MME consumption with the usage of an ESP block vs. saline control. 2. \- Determine if there is a significant effect on reported pain levels with the use of an ESP block vs. saline control in post percutaneous nephrolithotomies.
Interventions
PROCEDURE
Erector Spinae Plane Block
The Anesthesiologist will use ultrasound-guided technique and inject 30mL of 0.5% ropivacaine with 4 mg of dexamethasone or saline placebo control into the erector spinae muscle, superficial to the tips of the thoracic transverse processes
DRUG
Ropivacaine 0.5% Injectable Solution
The Anesthesiologist will use ultrasound-guided technique and inject 30mL of 0.5% ropivacaine with 4 mg of dexamethasone or saline placebo control into the erector spinae muscle, superficial to the tips of the thoracic transverse processes
DRUG
Dexamethasone
The Anesthesiologist will use ultrasound-guided technique and inject 30mL of 0.5% ropivacaine with 4 mg of dexamethasone or saline placebo control into the erector spinae muscle, superficial to the tips of the thoracic transverse processes
Primary outcome measures
Opioid consumption (MME)
Time frame: First 24 hours postoperative
Opioid consumption (MME) in the first 24 hours postoperative
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- Adults, male and female greater than or equal to 18 years of age and undergoing non-emergent percutaneous nephrolithotomy Monday through Friday between the hours of 6:00AM and 4:00PM.
- Female participants of childbearing potential will be required to provide a negative pregnancy test.
- Ability to understand and teach back consent for the procedure.
- Willingness to sign consent for procedure.
- English speaking.
Exclusion criteria
- Emergent surgery status.
- Local infection
- Allergy to local anesthetics.
- Recreational drug use.
- Inability to provide informed consent.
- Pregnancy or breastfeeding.
- History of Guillain-Barre' Syndrome.
- Underlying medical conditions that would post a significant risk to the patient.
- Opioid use \>90 days in the year leading up to surgery.
Where
- Knoxville, Tennessee
Related conditions & keywords
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Apr 28, 2026 · Source of record for eligibility and locations