Single Dose Amikacin for Uncomplicated Cystitis in the ED: A Feasibility Study

March 2, 2026 updated by: Antonios Likourezos

Single Dose Amikacin for Uncomplicated Cystitis in the Emergency Department (ED): A Feasibility Study

The purpose of this study is to determine if a single dose of amikacin (a type of antibiotic) can be used to effectively treat emergency department patients with uncomplicated cystitis (inflammation of the bladder). Participating in this study will allow the patient to treat their urinary tract infection (UTI) with a single intramuscular (IM (into the arm)) or intravenous (IV (into the vein)) shot of amikacin, rather than having to go to the pharmacy to pick up a prescription for antibiotics, and then take antibiotics for 3-7 days. A single dose of amikacin has been demonstrated to be safe, effective and well tolerated in other studies, but some patients may decline to participate because they do not wish to have an IV or IM shot, or because they don't want to speak on the phone with a research assistant three times over the next 30 days.

Study Overview

Status

Recruiting

Conditions

Intervention / Treatment

Detailed Description

he study is a prospective open-label cohort study that seeks to enroll 75 ED patients diagnosed with uncomplicated cystitis. Enrolled patients will be treated with a single dose of amikacin. The primary endpoint is clinical cure at 3 days. We chose a non-comparative design as our treatment strategy is literature- and guideline- supported; our goal is demonstrate that it is feasible to execute this approach out of the emergency department. Urine culture is not recommended in the in the initial management of patients with uncomplicated UTI treated in emergency or primary care settings.3

Data Collection Procedures: Patients will be enrolled as a convenience sample by the research team. The investigators will determine eligibility, approach the ED clinical team, then approach and consent the patient.

If consented, patient will be treated with amikacin 15 mg/kg IV or IM, based on actual body weight; for patients >120% of IBW, we will use AdjBW (IBW + 0.4(ABW-IBW)) rounded to nearest 50 mg. Patients who already have an IV will receive the medication IV, otherwise the dose will be given IM.

The study measurements at enrollment are age, PMH, meds, allergies, symptoms, and symptom duration as well as urinalysis results, amikacin dose and route. Telephone follow-up at 3, 7, and 30 days will include the following data points: symptom resolution: (complete resolution / mostly better / a little better / same / worse); any new symptoms; any provider visits since index visit (if any visits, describe).

Study Type

Observational

Enrollment (Estimated)

75

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact Backup

Study Locations

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

14 years to 110 years (Child, Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Sampling Method

Non-Probability Sample

Study Population

Emergency Medicine Female Patients age ≥14 years of age with a primary urinary complaint.

Description

Inclusion Criteria:

  • female emergency medicine patients
  • ≥14 years of age
  • uncomplicated urinary tract infection
  • a primary urinary complaint and nitrite-positive urine.

Exclusion Criteria:

  • pregnancy
  • abnormal genitourinary tract
  • recent urinary tract instrumentation
  • immunosuppression
  • CrCl < 25 mL/min
  • evidence of pyelonephritis or sepsis
  • any antibiotic treatment within 30 days
  • not available for phone follow-up in 3, 7, and 30 days
  • requires admission to the hospital
  • abnormal mental status.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Observational Models: Case-Only
  • Time Perspectives: Prospective

Cohorts and Interventions

Group / Cohort
Intervention / Treatment
Single Dose Amikacin
Patient will be treated with amikacin 15 mg/kg IV or IM, based on actual body weight; for patients >120% of IBW, we will use AdjBW (IBW + 0.4(ABW-IBW)) rounded to nearest 50 mg. Patients who already have an IV will receive the medication IV, otherwise the dose will be given IM.
Drug: Amikacin
patient will be treated with amikacin 15 mg/kg IV or IM, based on actual body weight; for patients >120% of IBW, we will use AdjBW (IBW + 0.4(ABW-IBW)) rounded to nearest 50 mg. Patients who already have an IV will receive the medication IV, otherwise the dose will be given IM.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Resolution of Urinary Tract Infection Symptoms
Time Frame: 3 days (72 hours)
>80% of patients treated with amikacin will have resolution of urinary tract infection symptoms.
3 days (72 hours)

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Antonios Likourezos

Investigators

  • Principal Investigator: Reuben Strayer, MD, Maimonides Medical Center

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

September 21, 2022

Primary Completion (Estimated)

May 31, 2026

Study Completion (Estimated)

December 31, 2026

Study Registration Dates

First Submitted

January 27, 2022

First Submitted That Met QC Criteria

January 27, 2022

First Posted (Actual)

February 8, 2022

Study Record Updates

Last Update Posted (Actual)

March 4, 2026

Last Update Submitted That Met QC Criteria

March 2, 2026

Last Verified

March 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 2021-07-07

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

Yes

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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