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Trial registered on ANZCTR
Registration number
ACTRN12613001129774
Ethics application status
Approved
Date submitted
4/10/2013
Date registered
10/10/2013
Date last updated
24/03/2017
Type of registration
Prospectively registered
Titles & IDs
Public title
Study on Clinical Outcomes of Piperacillin-Tazobactam Extended Infusion in Patients Hospitalised with a Bacterial Infection or Neutropenic Fever
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Scientific title
Study on the Clinical Outcomes of Piperacillin-Tazobactam Extended 4-hour Infusion as compared to Piperacillin-Tazobactam Traditional 30-minute Infusion in Patients Hospitalised for a Bacterial Infection or Neutropenic Fever - A Prospective Clinical Trial
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Secondary ID [1]
283361
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Nil
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Universal Trial Number (UTN)
U1111-1148-8097
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Trial acronym
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Linked study record
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Health condition
Health condition(s) or problem(s) studied:
Infection
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Condition category
Condition code
Infection
290649
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0
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Other infectious diseases
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Intervention/exposure
Study type
Interventional
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Description of intervention(s) / exposure
Intervention group would receive extended 4-hour intravenous infusion of Piperacillin-Tazobactam. Piperacillin-Tazobactam extended 4-hour infusion would be dosed according to renal function.
Creatinine clearance (estimated by Cockcroft Gault equation) >/= 20ml/min: 4.5gram every 8 hours
Creatinine clearance (estimated by Cockcroft Gault equation) < 20ml/min: 4.5gram every 12 hours
Participants would receive the extended 4-hour intravenous infusion of Piperacillin-Tazobactam after treatment assignment until Piperacillin-Tazobactam was decided to be discontinued by attending physician according to clinical condition and culture sensitivity results.
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Intervention code [1]
288086
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Treatment: Drugs
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Comparator / control treatment
Control group would receive traditional 30-minute intravenous infusion of Piperacillin-Tazobactam. Piperacillin-Tazobactam traditional 30-minute intravenous infusion would be dosed according to renal function.
Creatinine clearance (estimated by Cockcroft Gault equation) > 40ml/min: 4.5gram every 6 to 8 hours
Creatinine clearance (estimated by Cockcroft Gault equation) 20-40ml/min: 2.25gram every 6 hours to 4.5gram every 8 hours
Creatinine clearance (estimated by Cockcroft Gault equation) <20ml/min: 2.25gram every 6 to 8 hours
Participants would receive the traditional 30-minute intravenous infusion of Piperacillin-Tazobactam after treatment assignment until Piperacillin-Tazobactam was decided to be discontinued by attending physician according to clinical condition and culture sensitivity results.
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Control group
Active
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Outcomes
Primary outcome [1]
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The Primary clinical outcome is the 14-day mortality rate.
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Assessment method [1]
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Timepoint [1]
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14 days after patient assignment
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Secondary outcome [1]
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In-hospital mortality rate
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Assessment method [1]
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Timepoint [1]
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Until the subject discharged from hospital
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Secondary outcome [2]
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Time to defervescence
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Assessment method [2]
305030
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Timepoint [2]
305030
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Until the subject experience persistence of temperature below 37.5 degree Celsius for 24 hours.
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Secondary outcome [3]
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Number of days receiving mechanical ventilator support
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Assessment method [3]
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Timepoint [3]
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Until the subject weans off mechanical ventilator support.
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Secondary outcome [4]
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Length of intensive care unit (ICU) stay
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Assessment method [4]
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Timepoint [4]
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Until the subject discharged from ICU
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Secondary outcome [5]
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Length of hospital stay
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Assessment method [5]
305034
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Timepoint [5]
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Until the subject discharged from hospital
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Eligibility
Key inclusion criteria
Patients were eligible if they were aged 18 years or older; were hospitalized in an acute medical unit or intensive care unit; either had received a diagnosis of bacterial infection or suffered from neutropenic fever; planned to receive treatment of Piperacillin-Tazobactam for at least 48 hours.
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Minimum age
18
Years
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Maximum age
No limit
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Sex
Both males and females
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Can healthy volunteers participate?
No
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Key exclusion criteria
Patients would be excluded if they are pregnant, had received more than 48 hours of effective antibiotics, as defined by specimen culture sensitivity results, within five days of initiation of extended 4-hour infusion or traditional 30-minute infusions of Piperacillin-Tazobactam; had been receiving other beta-lactam antibiotics concomitantly.
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Study design
Purpose of the study
Treatment
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Allocation to intervention
Non-randomised trial
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Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
All hospitalized patients would receive a computer generated hospital number, also known as "HN number", in which the assigned method of numbering is not known to the investigators and treating physicians.
Patients carrying a hospital number ended with an even number, excluding the alphabetical letter, would be assigned to the study group whereas patients carrying a hospital number ended with an odd number, excluding the alphabetical letter, would be assigned to the control group.
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Methods used to generate the sequence in which subjects will be randomised (sequence generation)
Patients carrying a hospital number ended with an even number, excluding the alphabetical letter, would be assigned to the study group whereas patients carrying a hospital number ended with an odd number, excluding the alphabetical letter, would be assigned to the control group.
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Masking / blinding
Open (masking not used)
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Who is / are masked / blinded?
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Intervention assignment
Parallel
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Other design features
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Phase
Phase 4
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Type of endpoint/s
Efficacy
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Statistical methods / analysis
A sample size calculation was carried out based on previous retrospective cohort (Raymond J. Yost et al. The Retrospective Cohort of Extended-infusion Piperacillin-Tazobactam (RECEIPT) Study. Pharmacotherapy 2011; 31(8):767-775) demonstrating a significant reduction in mortality from 20.2% to 9.7% for extended 4-hour Piperacillin-Tazobactam infusion. A sample size of 360 was required to provide more than 80% power using a two sided alpha-level of 0.05 to detect a relative risk reduction in mortality rate of 50 percent between the extended 4-hour infusion and traditional 30-minute infusion of Piperacillin-Tazobactam.
Categorical variables were compared using Chi-square test. Continuous variables were compared using Student’s t test or Mann-Whitney U test. A P value of less than 0.05 was considered to indicate statistical significance, and all tests were two-sided. All calculations were performed using SPSS version 16 for Windows.
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Recruitment
Recruitment status
Completed
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Date of first participant enrolment
Anticipated
15/10/2013
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Actual
1/12/2013
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Date of last participant enrolment
Anticipated
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Actual
31/08/2015
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Date of last data collection
Anticipated
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Actual
30/09/2015
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Sample size
Target
360
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Accrual to date
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Final
367
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Recruitment outside Australia
Country [1]
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Hong Kong
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State/province [1]
5484
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Hong Kong
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Funding & Sponsors
Funding source category [1]
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Self funded/Unfunded
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Name [1]
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Not applicable
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Address [1]
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Not applicable
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Country [1]
288089
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Primary sponsor type
Individual
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Name
Fan Sheung Yin
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Address
Pharmacy department, G/F, Main Block,
Pamela Youde Nethersole Eastern Hospital
3 Lok Man Road, Chai Wan
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Country
Hong Kong
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Secondary sponsor category [1]
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None
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Name [1]
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Not applicable
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Address [1]
286811
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Not applicable
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Country [1]
286811
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Ethics approval
Ethics application status
Approved
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Ethics committee name [1]
290013
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Hong Kong East Cluster Ethics Committee
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Ethics committee address [1]
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Room 133, 2/F, Main Block, Pamela Youde Nethersole Eastern Hospital, 3 Lok Man Road, Chai Wan
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Ethics committee country [1]
290013
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Hong Kong
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Date submitted for ethics approval [1]
290013
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26/07/2013
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Approval date [1]
290013
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27/09/2013
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Ethics approval number [1]
290013
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Summary
Brief summary
Antibiotic resistance and its associated increasing mortality are ever-growing problems in Hong Kong. Infectious Diseases Society of America stated that the optimization of the antimicrobial dosing, based on pharmacokinetic (PK) and pharmacodynamic (PD) characteristics, was an important part of antibiotic stewardship . In view of the growing need to fight against resistant pathogens, piperacillin-tazobactam (Pip-Tazo) extended 4-hour infusion has been catching worldwide attention in the past few years. Piperacillin-Tazobactam is a widely use broad-spectrum beta-lactam antibiotic in hospitals in Hong Kong for the treatment of bacterial infections. The bactericidal effect of Pip-Tazo is maximized by maintaining the free drug concentration (Cf) above the minimum inhibitory concentration (MIC) for greater than fifty percent of time (T) . PK and PD studies carried out in the past decade on Pip-Tazo’s time-dependent killing (50% CfT>MIC) property had revealed that by extending its infusion time from 30 minutes to 4 hours, the probability of attaining the target (50% CfT>MIC) was highly increased for pathogens with MIC greater than 1mcg/ml , . Further studies had lent support to the clinical efficacy of Pip-Tazo extended infusion. A retrospective cohort study had shown that the 14-day mortality rate and median duration of hospital stay were significantly reduced for patients who received extended 4-hour infusion of Pip-Tazo compared to those who received intermittent 30-minute infusion for patients with Acute Physiological and Chronic Health Evaluation–II (APACHE II) scores greater than 173. Another retrospective study had also demonstrated significant mortality reduction for extended 4-hour infusion of Pip-Tazo . To the knowledge of the investigators, there had not been any prospective clinical trial studies carried out on Chinese population on the clinical outcomes of extended 4-hour infusion of Pip-Tazo in comparison to traditional non-extended 30-minute infusion of piperacillin-tazobactam. It had been expected that the patients receiving extended 4-hour infusion of Pip-Tazo would have a lower 14-day and in-hospital mortality rate, shorter time to defervescence, shorter number of days receiving mechanical ventilator support and length of ICU and hospital stay in comparison to the traditional 30-minute infusion. The results of this research may guide the future dosing strategy of Pip-Tazo.
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Trial website
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Trial related presentations / publications
Fan, S.-Y., Shum, H.-P., Cheng, W.-Y., Chan, Y.-H., Leung, S.-Y. M. and Yan, W.-W. (2017), Clinical Outcomes of Extended Versus Intermittent Infusion of Piperacillin/Tazobactam in Critically Ill Patients: A Prospective Clinical Trial. Pharmacotherapy, 37: 109–119. doi:10.1002/phar.1875
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Public notes
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Contacts
Principal investigator
Name
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Ms Fan Sheung Yin
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Address
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Pharmacy Department,
G/F, Main Block,
Pamela Youde Nethersole Eastern Hospital,
3 Lok Man Road, Chai Wan
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Country
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Hong Kong
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Phone
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+85264600823
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Fax
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Email
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[email protected]
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Contact person for public queries
Name
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Fan Sheung Yin
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Address
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Pharmacy Department,
G/F, Main Block,
Pamela Youde Nethersole Eastern Hospital,
3 Lok Man Road, Chai Wan
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Country
43479
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Hong Kong
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Phone
43479
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+85264600823
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Fax
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Email
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[email protected]
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Contact person for scientific queries
Name
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Fan Sheung Yin
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Address
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Pharmacy Department,
G/F, Main Block,
Pamela Youde Nethersole Eastern Hospital,
3 Lok Man Road, Chai Wan
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Country
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Hong Kong
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Phone
43480
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+85264600823
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Fax
43480
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Email
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[email protected]
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No information has been provided regarding IPD availability
What supporting documents are/will be available?
No Supporting Document Provided
Results publications and other study-related documents
Documents added manually
No documents have been uploaded by study researchers.
Documents added automatically
Source
Title
Year of Publication
DOI
Embase
Clinical Outcomes of Extended Versus Intermittent Infusion of Piperacillin/Tazobactam in Critically Ill Patients: A Prospective Clinical Trial.
2017
https://dx.doi.org/10.1002/phar.1875
N.B. These documents automatically identified may not have been verified by the study sponsor.
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