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01.12.2011 | Case report | Ausgabe 1/2011 Open Access

Journal of Medical Case Reports 1/2011

Parenteral lidocaine for treatment of intractable renal colic: a case series

Journal of Medical Case Reports > Ausgabe 1/2011
Hassan Soleimanpour, Kamaleddin Hassanzadeh, Dawood Agha Mohammadi, Hassan Vaezi, Robab Mehdizadeh Esfanjani
Wichtige Hinweise

Competing interests

The authors declare that they have no competing interests.

Authors' contributions

HS, KH, DA, and HV collected clinical data, reviewed the literature on the topic, and drafted the manuscript. RME analyzed and interpreted the patient data. All of the authors were involved in patient management or the writing of the manuscript. All authors read and approved the final manuscript.



We report a case series of successful treatment of intractable renal colic using parenteral lidocaine.

Case presentation

Because of inconsistent responses to standard treatment with opioids and non-steroidal anti-inflammatory drugs in patients with renal colic pain, we decided to begin a trial of a single intravenous dose of lidocaine (approximately 1.5 mg/kg) slowly in eight patients with intractable renal colic who were referred to our emergency medicine department. The patients were six men and two women with a mean age at diagnosis of 34.62 years (age range, 28 to 42 years). The patients were of Iranian ethnic origin. The patients' degree of pain, based on Visual Analog Scale score upon entering our emergency medicine department, was recorded 10, 20, and 30 minutes after lidocaine injection. The patients' degree of pain decreased from a mean Visual Analog Scale score (±SD) of 8.87 ± 0.99 (95% confidence interval (95% CI) 8.04 to 9.70) to a mean Visual Analog Scale score (±SD) of 1 ± 2.82 (95% CI -1.36 to 3.36) before and 30 minutes after lidocaine treatment, respectively. Two of eight patients experienced transient mild dizziness, and three of eight patients experienced minimal slurring of speech. No patient experienced serious adverse events.


Parenteral lidocaine treatment can reduce pain dramatically or subtly.

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