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CTRI Number  CTRI/2018/08/015364 [Registered on: 16/08/2018] Trial Registered Prospectively
Last Modified On: 27/02/2021
Post Graduate Thesis  No 
Type of Trial  Interventional 
Type of Study   Drug 
Study Design  Randomized, Parallel Group Trial 
Public Title of Study   Comparison of two drugs Norepinephrine and Phenylephrine used for the treatment of fall in blood pressure after spinal anaesthesia for Caeserean delivery of uncomplicated pregnancy 
Scientific Title of Study   Comparison of Norepinephrine vs Phenylephrine boluses for the treatment of hypotension during spinal anaesthesia in patients undergoing Caeserean section. 
Trial Acronym  NEPT 
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Nitu PV 
Designation  Associate professor 
Affiliation  Amrita insititue of medical sciences 
Address  Dept of Anaesthesia, Amrita Institute of medical Sciences,ponekkara,kochi,India

Ernakulam
KERALA
682041
India 
Phone  09495962020  
Fax  0484-2802020  
Email  nituveesundeep@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Nitu PV 
Designation  Associate professor 
Affiliation  Amrita insititue of medical sciences 
Address  Dept of Anaesthesia, Amrita Institute of medical Sciences,ponekkara,kochi,India

Ernakulam
KERALA
682041
India 
Phone  09495962020  
Fax  0484-2802020  
Email  nituveesundeep@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Nitu PV 
Designation  Associate professor 
Affiliation  Amrita insititue of medical sciences 
Address  Dept of Anaesthesia, Amrita Institute of medical Sciences,ponekkara,kochi,India

Ernakulam
KERALA
682041
India 
Phone  09495962020  
Fax  0484-2802020  
Email  nituveesundeep@gmail.com  
 
Source of Monetary or Material Support  
Amrita institue of medical sciences,ponekkara,ernakulam,682041 
 
Primary Sponsor  
Name  amrita institue of medical sciences 
Address  Department of anaethesia ,Amrita institute of medical sciences,Ponekkara,kochi,682041. 
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 
Nitu Puthenveettil  Amrita institute of medical sciences  obstetrics operation room,Dept of Anaesthesia, Amrita Institute of medical Sciences,682041
Ernakulam
KERALA 
9495962020
0484-2802020
nituveesundeep@gmail.com 
 
Details of Ethics Committee
Modification(s)  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Institutional ethics committe,AIMS  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied
Modification(s)  
Health Type  Condition 
Patients  (1) ICD-10 Condition: O82||Encounter for cesarean delivery without indication, (2) ICD-10 Condition: O00-O9A||Pregnancy, childbirth and the puerperium,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Intervention  Norepinephrine  Norepinephrine is a potent vasopressor with β-adrenergic properties. Recently norepinephrine boluses are being suggested as an alternative to phenylephrine boluses to treat post-spinal anaesthesia induced hypotension for caesarean delivery. Theoretically it causes less reduction in heart rate & cardiac output. 
Comparator Agent  Phenylephrine  Phenylephrine is the commonly used drug to treat hypotension following spinal anaesthesia in caesarean section. Drawback with this drug is the reduction in heart rate and cardiac output which could adversely affect the outcomes of both mother and fetus. 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  40.00 Year(s)
Gender  Female 
Details  Elective CS under spinal anaesthesia,
Normal singleton pregnancy beyond 36 weeks gestation,
ASA physical status 1 or 2,
Weight 50-100 kg,
Height 150-180 cm.
 
 
ExclusionCriteria 
Details  Allergy or hypersensitivity to phenylephrine or norepinephrine,
Any hypertensive disorders of pregnancy,
Cardiovascular or cerebrovascular disease,
Fetal abnormalities.
 
 
Method of Generating Random Sequence   Computer generated randomization 
Method of Concealment   Sequentially numbered, sealed, opaque envelopes 
Blinding/Masking   Participant, Investigator and Outcome Assessor Blinded 
Primary Outcome  
Outcome  TimePoints 
To compare number of boluses of norepinephrine vs. phenylephrine required to maintain maternal blood pressure when used to treat post-spinal hypotension in patients undergoing caesarean section.  end of surgery 
 
Secondary Outcome  
Outcome  TimePoints 
To compare the effects of these two drugs on incidence of bradycardia, hypertension, nausea& vomiting in mother and foetal outcomes such as APGAR score & umbilical vein blood gases.  end of surgery 
 
Target Sample Size   Total Sample Size="50"
Sample Size from India="50" 
Final Enrollment numbers achieved (Total)= "56"
Final Enrollment numbers achieved (India)="56" 
Phase of Trial   Phase 3 
Date of First Enrollment (India)   01/09/2018 
Date of Study Completion (India) 12/03/2019 
Date of First Enrollment (Global)  Date Missing 
Date of Study Completion (Global) Date Missing 
Estimated Duration of Trial   Years="0"
Months="6"
Days="0" 
Recruitment Status of Trial (Global)
Modification(s)  
Not Applicable 
Recruitment Status of Trial (India)  Completed 
Publication Details
Modification(s)  
Puthenveettil N, Sivachalam SN, Rajan S, Paul J, Kumar L. Comparison of norepinephrine and phenylephrine boluses for the treatment of hypotension during spinal anaesthesia for caesarean section – A randomised controlled trial. Indian J Anaesth 2019;63:995-1000 
Individual Participant Data (IPD) Sharing Statement

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

Brief Summary
Modification(s)  
Background and Aims: Hypotension following spinal anaesthesia for caesarean section is
common in spite of adequate fluid loading. Phenylephrine is the recommended drug to treat spinal
hypotension during caesarean section. Recently, norepinephrine boluses are being suggested as
an alternative to phenylephrine boluses. The aim of our study was to compare the effectiveness
of bolus doses of norepinephrine with phenylephrine to treat spinal hypotension during caesarean
section. Methods: Fifty patients undergoing elective caesarean section under spinal anaesthesia
were randomly assigned into two groups. Group P patients received phenylephrine 50 μg as an
intravenous bolus and group N received 4 μg of norepinephrine as intravenous bolus to treat
spinal hypotension. The primary objective of our study was to compare the number of bolus
doses of norepinephrine or phenylephrine required to treat spinal hypotension. The secondary
objectives were to compare the incidence of bradycardia, hypertension, nausea and vomiting in
mother and foetal outcomes. Results: The number of boluses of vasopressors required to treat
hypotension was significantly lower in group N (1.40 ± 0.577 vs. 2.28 ± 1.061, P = 0.001). The
frequency of bradycardia was high in group P, but this difference was not statistically significant
(4%vs. 20%, P = 0.192). Maternal complications such as nausea and vomiting and shivering were
comparable between the groups. The foetal parameters were also comparable between the two
groups. Conclusion: Intermittent boluses of norepinephrine are effective in the management of
spinal‑induced hypotension during caesarean section. The neonatal outcomes were similar in both
the groups. Norepinephrine boluses can be considered as an alternative to phenylephrine boluses.

 
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