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CTRI Number  CTRI/2024/12/077762 [Registered on: 06/12/2024] Trial Registered Prospectively
Last Modified On: 12/12/2024
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Drug 
Study Design  Single Arm Study 
Public Title of Study   A study on how the drug Colistin is processed in the bodies of very sick patients. 
Scientific Title of Study   A prospective, non-randomized Population Pharmacokinetic study of Colistin in critically ill patients 
Trial Acronym  NIL 
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Dr Samir Malhotra 
Designation  Professor and Head, Department of Pharmacology 
Affiliation  Post Graduate Institute of Medical Education & Research, Chandigarh 
Address  Room Number 4001, Department of Pharmacology, PN Chuttani Block, Post Graduate Institute of Medical Education & Research (PGIMER), Sector-12, Chandigarh India

Chandigarh
CHANDIGARH
160012
India 
Phone  01722755254  
Fax    
Email  smal.pgi@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr Samir Malhotra 
Designation  Professor and Head, Department of Pharmacology 
Affiliation  Post Graduate Institute of Medical Education & Research, Chandigarh 
Address  Room Number 4001, Department of Pharmacology, PN Chuttani Block, Post Graduate Institute of Medical Education & Research (PGIMER), Sector-12, Chandigarh India

Chandigarh
CHANDIGARH
160012
India 
Phone  01722755254  
Fax    
Email  smal.pgi@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Dr Aayudhin Menon P 
Designation  Resident 
Affiliation  Post Graduate Institute of Medical Education & Research, Chandigarh 
Address  Room Number 4019, Department of Pharmacology, PN Chuttani Block, Post Graduate Institute of Medical Education & Research (PGIMER), Sector-12, Chandigarh India

Chandigarh
CHANDIGARH
160012
India 
Phone  7306529469  
Fax    
Email  draayudhinmenon@gmail.com  
 
Source of Monetary or Material Support  
Department of pharmacology,PGIMER,Chandigarh-160012,India 
 
Primary Sponsor  
Name  Post graduate Institute of Medical Education and Research (PGIMER), Chandigarh 
Address  Sector 12, Chandigarh-160012, India 
Type of Sponsor  Research institution and hospital 
 
Details of Secondary Sponsor  
Name  Address 
NIL  NIL 
 
Countries of Recruitment     India  
Sites of Study  
No of Sites = 1  
Name of Principal Investigator  Name of Site  Site Address  Phone/Fax/Email 
DrAayudhin Menon  PGIMER  ICU,Nehru hospital,PGIMER,Chandigarh-160012
Chandigarh
CHANDIGARH 
7306529469

draayudhinmenon@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Institutional Ethics Committee (Intramural), Post Graduate Institute of Medical Education and Research, Chandigarh  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: B968||Other specified bacterial agents as the cause of diseases classified elsewhere,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Intervention  Iohexol  Involves taking blood samples after Iohexol administration to determine Iohexol clearance and GFR estimation. 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  95.00 Year(s)
Gender  Both 
Details  1.Critically ill patients of age ≥18 years, getting CMS as part of their treatment based on suspected or confirmed infection caused by multidrug-resistant Gram-negative bacteria necessitating the administration of Colistin based on dosage regimens selected at the discretion of physicians.
2. Patient receiving intravenous Colistin with or without concomitant administration of Colistin through other routes (inhalational/intrathecal).
Critically ill patients will be characterized by a state of poor health accompanied by dysfunction of vital organs, presenting a significant risk of impending death without immediate medical intervention, and with the possibility of recovery, as determined by the attending physician. 
 
ExclusionCriteria 
Details  1. No consent
2. Pregnancy or breastfeeding
3. Hypersensitivity to Colistin or Iohexol
4. Expected survival of less than 48 hours
5. Colistin administration within 1 week prior to enrolment.
6. Patients on drugs interacting with Iohexol
 
 
Method of Generating Random Sequence   Not Applicable 
Method of Concealment   Not Applicable 
Blinding/Masking   Not Applicable 
Primary Outcome  
Outcome  TimePoints 
Pharmacokinetic parameters of Colistin  1.After loading dose of Colistin-1st day
2.After steady state of Colistin is achieved-after 9 infusions



 
 
Secondary Outcome  
Outcome  TimePoints 
Identification of covariates of significance for the establishment of population pharmacokinetic model.

Iohexol Kel & AUC0-∞, Plasma Iohexol clearance 
Assess all the planned covariates at the start of study-Day 1.  
 
Target Sample Size   Total Sample Size="30"
Sample Size from India="30" 
Final Enrollment numbers achieved (Total)= "Applicable only for Completed/Terminated trials"
Final Enrollment numbers achieved (India)="Applicable only for Completed/Terminated trials" 
Phase of Trial   N/A 
Date of First Enrollment (India)   25/12/2024 
Date of Study Completion (India) Applicable only for Completed/Terminated trials 
Date of First Enrollment (Global)  Date Missing 
Date of Study Completion (Global) Applicable only for Completed/Terminated trials 
Estimated Duration of Trial   Years="1"
Months="0"
Days="0" 
Recruitment Status of Trial (Global)
Modification(s)  
Not Yet Recruiting 
Recruitment Status of Trial (India)  Open to Recruitment 
Publication Details   N/A 
Individual Participant Data (IPD) Sharing Statement

Will individual participant data (IPD) be shared publicly (including data dictionaries)?  

Response - NO
Brief Summary   1.Screen critically ill patients admitted in ICU
2.Obtain consent if eligible.
3.Obtain the demographic details, baseline investigation results, primary diagnosis, medication history, etc
4.Estimate GFR using various formulas.
5.Obtain 24 hour urine sample for urinary creatinine clearance calculation.
6.Administer 5 mL of Iohexol IV bolus, obtain 4 blood samples of 2 mL each at 2,4,8 and 12 hour after administration to calculate GFR by iohexol plasma clearance method.
7.Collect 4 venous blood samples of 2 mL each after 2 h,8h,12h and between 18-24 hour after the administration of loading dose of colistin.
8.Collect 3 blood samples of 2 mL each after the steady state of colistin has been achieved at 1 h, 8 h and and 12 h of maintenance dose administration.
9.Analyse the date after getting the pharmacokinetic parameters of Colistin.
10.Prepare a population pharamacokinetic model including the significant covariates for Colistin dosing in critically ill patients.
 
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