Preliminary Research On Two-step Dosing Of Imipenem/Cilastatin (PROTDOI)

November 24, 2015 updated by: Jianfeng Xie, Southeast University, China
Explore Imipenem/Cilastatin two-step dosing compared to 2 hours infusion in patients with severe whether can obtain better results of the pharmacokinetic/pharmacodynamic, for clinical rational use of antimicrobial agents, and provide theoretical support for optimizing dosage regimen.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Unknown

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

Compared with Imipenem/Cilastatin 2 hours continuous dosing method and two-step dosing method (0.5 hours before enter half dose, after 1.5 hours, the other half of the input dose) of blood drug concentration in the body than the minimal inhibitory concentrations (MIC) pathogens percent of dosing interval duration (100% fT > MIC), blood drug concentration in the body more than 4 times the minimal inhibitory concentrations (MIC) pathogens percent of dosing interval duration (100% fT > 4 MIC), blood drug concentration peak and the ratio of the minimal inhibitory concentrations (MIC) pathogens (Cmax/MIC), blood drug concentration (Tmax) used in the peak time, used to guide clinical patients with severe infection of Imipenem/Cilastatin usage.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Anticipated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
24

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 4

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

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • China
    • Jiangsu
      • Nanjing, Jiangsu, China, 210000
        • Recruiting
        • Kang Xu
        • Contact:

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

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years to 75 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • sepsis or severe sepsis or severe infections in the previous 48 hours
  • treatment with imipenem/cilastatin (recommended by hospital microbiologists)
  • expected duration of hospital stays in the ICU ≥ 72 h from recruitment
  • recruited patients agreed to participate in this trial, and had set up a signed informed consent

Exclusion Criteria:

  • with an allergy to carbapenems or with an adverse drug reaction to imipenem
  • acute or chronic renal failure assessed by serum creatinine concentrations > 280 μmol/L (or creatinine clearance <20mL/min) or those requiring continuous renal replacement therapy
  • drug or alcohol abuse
  • Pregnant and lactant women
  • patients near to death

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

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Single

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Active Comparator: Group I
Group I received intravenous imipenem/cilastatin 1 g every 8 h (q8h) or 0.5g every 6 h (q6h) with optimized two-step infusion therapy (OTIT; rapid first-step infusion in 30 min and slow second-step infusion above 1.5 hours) "Group I" is more informative than "Group II" from PK parameters(%T>MIC,AUC/MIC).
Drug: Imipenem
Patients in group I received a dose of imipenem/cilastatin 1g each every 8 hours or 0.5g every 6 hours optimized two-step infusion therapy (rapid first-step infusion in 30 min and slow second-step infusion above 1.5 hours)
Other Names:
  • Optimized two-step infusion therapy
Placebo Comparator: Group II

group II received intravenous imipenem/cilastatin 1g q8h or 0.5g q6h with extended infusion therapy (2-hours continuous infusion in a constant speed).

"Group I" is more informative than "Group II" from PK parameters(%T>MIC,AUC/MIC).
Drug: Imipenem
Patients in group I received a dose of imipenem/cilastatin 1g each every 8 hours or 0.5g every 6 hours optimized two-step infusion therapy (rapid first-step infusion in 30 min and slow second-step infusion above 1.5 hours)
Other Names:
  • Optimized two-step infusion therapy

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Time Frame
Area under the plasma concentration versus time curve (AUC)
Time Frame: up to 9 months
up to 9 months

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Plasma Concentration
Time Frame: up to 9 months
immediately prior to imipenem/cilastatin administration (time 0 min) and at 30 min, 1h, 2h, 4h, 6h and 8h after administration of the infusion
up to 9 months

Other Outcome Measures

Other Outcome Measures

For clinical trials, a planned measurement described in the protocol that is used to determine the effect of an intervention/treatment on participants. For observational studies, a measurement or observation that is used to describe patterns of diseases or traits, or associations with exposures, risk factors, or treatment. Types of outcome measures include primary outcome measure and secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
PK/PD indices
Time Frame: up to 9 moths
Time>MIC (∫T>MIC) and 4×MIC (∫T>4×MIC)
up to 9 moths

Collaborators and Investigators

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

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Southeast University, China

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Merck Sharp & Dohme LLC

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

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

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
January 1, 2015

Primary Completion (Anticipated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
November 1, 2015

Study Completion (Anticipated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
December 1, 2015

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
November 13, 2015

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
November 24, 2015

First Posted (Estimate)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
November 26, 2015

Study Record Updates

Last Update Posted (Estimate)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
November 26, 2015

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
November 24, 2015

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
November 1, 2015

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • Two-step Dosing Of Imipenem

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