Erector Spinae Plane (ESP) Block for Renal Colic

Can Erector Spinae Plane (ESP) Block Better Relieve Acute Renal Colic Pain Than Standard of Care

Comparing standard of care to erector spinae plane block for acute renal colic pain.

Will compare at times 0, 10 minute, 20 minute, 40 minute and 60 minutes after local nerve block given.

Inclusion Criteria:

• 18 to 65 years old
• ASA Level I and II
• flank pain concerning for renal colic in ED

Exclusion Criteria:

• pregnant women
• subjects unable to appreciate ESP block landmarks under ultrasound
• skin infection over needle site insertion
• Allergy to local anesthesia (lidocaine/Ropivacaine)
• bleeding disorders
• serious cardiac, lung, liver or kidney dysfunction
• history of spine surgery
• history of spinal infection
• history of epidural injection within 6 months
• acute exacerbation of serious mental disease
• unable to consent
• unable to communicate pain level