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CTRI Number  CTRI/2021/08/035816 [Registered on: 19/08/2021] Trial Registered Prospectively
Last Modified On: 19/03/2023
Post Graduate Thesis  Yes 
Type of Trial  Observational 
Type of Study   Cohort Study 
Study Design  Single Arm Study 
Public Title of Study   Can pre-operative internal jugular vein measurements predict hypotension after spinal anaesthesia in pregnant women undergoing cesarean section? 
Scientific Title of Study   Role of Internal jugular vein(IJV) collapsibility index to predict post spinal hypotension in pregnant women undergoing cesarean section, a prospective observational study. 
Trial Acronym   
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Pharanitharan N 
Designation  Junior resident 
Affiliation  AIIMS Raipur 
Address  Department of Anaesthesiology, AIIMS Raipur.

Raipur
CHHATTISGARH
492099
India 
Phone  8012820356  
Fax    
Email  pharanitharan@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Mamta Sinha 
Designation  Assistant Professor 
Affiliation  AIIMS Raipur 
Address  Department of Anaesthesiology, AIIMS Raipur.

Raipur
CHHATTISGARH
492099
India 
Phone  9818113061  
Fax    
Email  drmamta12@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Pharanitharan N 
Designation  Junior resident 
Affiliation  AIIMS Raipur 
Address  Department of Anaesthesiology, AIIMS Raipur.

Raipur
CHHATTISGARH
492099
India 
Phone  8012820356  
Fax    
Email  pharanitharan@gmail.com  
 
Source of Monetary or Material Support  
AIIMS Raipur 
 
Primary Sponsor  
Name  AIIMS RAIPUR  
Address  Department of Anaesthesiology, AIIMS Raipur. 
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 
Mamta Sinha  AIIMS Raipur  A block OT complex, Department of Anaesthesiology, AIIMS Raipur
Raipur
CHHATTISGARH 
9818113061

drmamta12@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
IEC,AIIMS Raipur  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: O00-O9A||Pregnancy, childbirth and the puerperium,  
 
Intervention / Comparator Agent  
Type  Name  Details 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  40.00 Year(s)
Gender  Female 
Details  1.Age: 18 – 40 years
2. American Society of Anaesthesiologists Physical Status II
3. Singleton pregnancy
4. Elective cesarean section under spinal anaesthesia
5.Gestational age >37 weeks 
 
ExclusionCriteria 
Details  1.Essential or pregnancy-induced hypertension.
2.Diabetes including gestational diabetes.
3.Heart disease.
4.Abruptio placenta.
5.Placenta previa
6.Premature and Over dated (<36 or >41 weeks gestation) pregnancy.
7.Haemoglobin of less than 7 gm/dl.
8.Hemoglobinopathies.
9.Peripheral vascular disease.
10.Coagulopathies.
11.parturient with baseline heart rate of <50/minutes.
12.Partial spinal block.
13.Fetal condition (IUGR, severe congenital anomalies) 
 
Method of Generating Random Sequence   Not Applicable 
Method of Concealment   Not Applicable 
Blinding/Masking   Not Applicable 
Primary Outcome  
Outcome  TimePoints 
IJV diameter,IJV collapsibility index, episodes of intra operative hypotension  IJV diameter and IJV collapsibility index will be measured preoperatively, Blood pressure monitoring (Systolic, diastolic and mean arterial pressures)from spinal anaesthesia every 3 minutes until delivery of the baby.
 
 
Secondary Outcome  
Outcome  TimePoints 
Body mass index (BMI),
period of fasting, abdominal girth, boluses of vasopressor used,heart rate and SpO2 
Body mass index (BMI),
period of fasting, abdominal girth will be measured preoperatively. Boluses of vasopressors used, HR, SpO2 and blood pressure monitoring (Systolic, diastolic and mean arterial pressures)from spinal anaesthesia every 3 minutes until delivery of the baby. 
 
Target Sample Size   Total Sample Size="91"
Sample Size from India="91" 
Final Enrollment numbers achieved (Total)= "91"
Final Enrollment numbers achieved (India)="91" 
Phase of Trial   N/A 
Date of First Enrollment (India)   27/08/2021 
Date of Study Completion (India) 10/11/2022 
Date of First Enrollment (Global)  Date Missing 
Date of Study Completion (Global) Date Missing 
Estimated Duration of Trial   Years="1"
Months="0"
Days="0" 
Recruitment Status of Trial (Global)
Modification(s)  
Not Applicable 
Recruitment Status of Trial (India)  Completed 
Publication Details   NIL 
Individual Participant Data (IPD) Sharing Statement

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

Response - NO
Brief Summary   Internal jugular vein (IJV) is easier to access and there is limited data and study in the aspect of IJV collapsibility index as a predictor of post spinal hypotension, especially in pregnant women. This study is aimed at evaluation of IJV collapsibility index in assessment of post-spinal hypotension in caesarean section.

Patient fulfilling inclusion criteria will be explained about the procedure and after taking consent ,patient will be included in the study. Baseline hemodynamic parameters will be noted. Patient  will be subjected to ultrasonography of the right side of neck using linear probe ,the sonographic measurements of IJV will be assessed using M mode imaging and measurements such as  depth of IJV ,relation to carotid artery, maximum diameter (at end of expiration),minimum diameter(at end of inspiration),collapsibility index will be measured. The anaesthesiologist  performing ultrasonography will not be involved in intraoperative monitoring. Patient will recieve spinal anaesthesia and sensory level of T6 is targeted .And parameter such blood pressure (SBP,DBP,MAP),HR,RR,SpO2 will be noted every 3 minutes until delivery of the baby. The fall of MAP by 20% from baseline or <65 mmHg will be considered as hypotension. Hypotension will be treated with 6mg of mephentermine or 25mcg of phenylephrine intravenously. The study will finish with delivery of the baby& cord clamping. Data collection will be stopped and number of doses of vasopressor used to counteract hypotension will be noted.
 
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