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CTRI Number  CTRI/2025/02/081190 [Registered on: 24/02/2025] Trial Registered Prospectively
Last Modified On: 09/02/2025
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Preventive 
Study Design  Other 
Public Title of Study   STUDY TO COMPARE THE INCIDENCE OF SPINAL HYPOTENSION IN ELECTIVE LSCS CASES WITH PERFUSION INDEX IN PULSE OXIMETRY  
Scientific Title of Study   COMPARING THE INCIDENCE OF SPINAL HYPOTENSION IN ELECTIVE LSCS CASES WITH DIFFERENT VALUES OF PERFUSION INDEX IN PULSE OXIMETRY –AN OBSERVATIONAL PROSPECTIVE STUDY 
Trial Acronym  NIL 
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  DRMANIKANDANP 
Designation  JUNIOR RESIDENT  
Affiliation  Chettinad hospital and research institute 
Address  D block , 1st floor,Department of Anaesthesiology,Chettinad hospital and research institute,chettinad health city,Rajiv Gandhi Salai( OMR) ,kelambakkam Chennai

Chennai
TAMIL NADU
603103
India 
Phone  8754604049  
Fax    
Email  drmani284396@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Prof Dr ASHOK KULASEKHAR 
Designation  Professor Head of the department 
Affiliation  Chettinad hospital and research institute 
Address  Professor Head of the department, D- block 1st floor, Department of Anaesthesiology, chettinad Hospital and Research Institute, Chettinad Health city, Rajiv Gandhi salai, Kelambakkam Chennai

Chennai
TAMIL NADU
603103
India 
Phone  9840498420  
Fax    
Email  ashokk_dr@yahoo.com  
 
Details of Contact Person
Public Query
 
Name  Prof Dr ASHOK KULASEKHAR 
Designation  Professor Head of the department 
Affiliation  Chettinad hospital and research institute 
Address  Professor Head of the department, D- block 1st floor, Department of Anaesthesiology, chettinad Hospital and Research Institute, Chettinad Health city, Rajiv Gandhi salai, Kelambakkam Chennai

Chennai
TAMIL NADU
603103
India 
Phone  9840498420  
Fax    
Email  ashokk_dr@yahoo.com  
 
Source of Monetary or Material Support  
Chettinad hospital and Research Institute, Chettinad Health city, Rajiv Gandhi salai, Kelambakkam, Chennai, Tamilnadu 603103 
 
Primary Sponsor  
Name  Chettinad hospital and research insitute  
Address  Chettinad hospital and research institute, chettinad health city, Rajiv Gandhi Salai,Kelambakkam, chennai, Tamilnadu, India-603103 
Type of Sponsor  Private medical college 
 
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 
DRMANIKANDANP  CHETTINAD HOSPITAL AND RESEARCH INSITUTE   D- block , 1st floor, Department of Anaesthesiology, Chettinad Health city, Chettinad health city,Rajiv Gandhi Salai, Kelambakkam,,Chennai ,Tamilnadu ,India-603103
Chennai
TAMIL NADU 
8754604049

drmani284396@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
INSTITUTIONAL HUMAN ETHICS COMMITTEE ( CARE IHEC- I)  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: O746||Other complications of spinal andepidural anesthesia during labor and delivery,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Intervention  IV FLUIDS PHENYLEPIHRINE   Hypotension will be treated with IV fluid (Ringer lactate solution-250ml bolus and then titrated according to Blood pressure ),if required vasopressors (Phenylepiphrine 50-100mcg and then according to blood pressure ) 
Comparator Agent  NIL   NIL 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  35.00 Year(s)
Gender  Female 
Details  Study participants with ASA Grade 2
Age group of the study participants 18-35 years
Pregnant mothers with singleton fetus
Elective LSCS
Patient Height-150-180CM
 
 
ExclusionCriteria 
Details  ASA 3 and 4
patients with eclampsia and preeclampsia
patient with cardiovascualr disease
patient with eclampsia and pre eclmapsia  
 
Method of Generating Random Sequence   Not Applicable 
Method of Concealment   Not Applicable 
Blinding/Masking   Not Applicable 
Primary Outcome  
Outcome  TimePoints 
To Compare the association of post spinal hypotension in
elective LSCS in two groups with different perfusion index 
At baseline and till the end of surgery (120 mins ) 
 
Secondary Outcome  
Outcome  TimePoints 
To assess the
use of vasopressors (Phenylepineprine)in number of patients in both group with spinal
hypotension
 
120 minutes  
 
Target Sample Size   Total Sample Size="60"
Sample Size from India="60" 
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   Phase 4 
Date of First Enrollment (India)   03/03/2025 
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="0"
Months="8"
Days="0" 
Recruitment Status of Trial (Global)   Not Yet Recruiting 
Recruitment Status of Trial (India)  Not Yet Recruiting 
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    Spinal anesthesia for lower segment cesarean section (LSCS) is one of the most common procedures.  Prediction of patients likely to develop hypotension will ensure effective prevention and prompt management, which is of paramount importance for the best quality care. • Various parameters have been studied to predict hypotension after spinal anesthesia but a precise indicator was not established  Parameter we will be using in this study is Perfusion index from pulse oximetry Perfusion index (PI) is a non invasive, continuous, photo plethysmographic pulse wave monitored from a pulse oximeter .It is defined as the ratio of pulsatile blood flow to non pulsatile blood flow in peripheral vascular tissue and the value ranges between 0.02% and 20% In parturients, at term, due to decreased peripheral vascular tone, blood volume is pooled in the extremities, which increases further after sympathetic blockade of spinal anesthesia resulting in hypotension.  Parturients with high baseline PI are expected to have lower peripheral vascular tone and hence are at higher risk of developing hypotension following spinal anesthesiaAll the studies have used different baseline perfusion index with varying results .I would like to use baseline perfusion index of 2.9and two groups (Group 1 –PI < 2.9 and Group >2.9)which has increased sensitivity(83%) and specificity (96%) according to the study - Harde MJ, Ranale PB, Fernandes S. Perfusion index to predict post spinal hypotension in lower segment caesarean section. J Anaesthesiol Clin Pharmacol 2024;40:37-42.

 Study Objectives 

 AIM Predicting spinal hypotension in elective LSCS cases using perfusion Index in pulse oximetry 

 PRIMARY OBJECTIVE To Compare the association of post spinal hypotension in elective LSCS in two groups with different perfusion index 

SECONDARY OBJECTIVE To assess the use of vasopressors (Phenylepineprine)in number of patients in both group with spinal hypotension

Study design- AN OBSERVATIONAL PROSPECTIVE STUDY 
 
Number of subjects/sample size 
The sample size suggested for the present study is 30 in each group Group 1(PI < 2.9) -30 Participants Group 2(PI >2.9)-30 Participants Study Methodology or procedure 

 Inclusion criteria 
 Study participants with ASA Grade 2  
Age group of the study participants 18- 35 years 
 Pregnant mothers with singleton fetus  
Elective LSCS 
 Patient Height-150- 180cm

Exclusion criteria  
Asa 3 and 4  Emergency cases  
Body mass index >40 
Paturients with placenta previa, 
 Cardio and Cerebro vascular disease 
 Preeclampsia and Eclampsia patients 
 Peripheral vascular disease

After obtaining apporoval from Ethics comitee  Informed and Written consent Will be obtained from all patients  All patients will be instructed to fast for 8 hrs for solid diet prior to surgery  All patients will be pre medicated with Tab.Metaclopromide 10 mg and Tab Ranitidine 150 mg orally on the night before surgery and morning of surgery  Patients baseline pre operative vitals will be recorded ( HR, BP, MAP, SPO2 and perfusion index )  An intravenous (IV) line will be established with an 18 G IV catheter in the dorsum of hand or wrist vein  All the patients are pre loaded with Lactated ringer’s(RL) solution of 10ml /kg(Approximately 500 ml)  Standard monitoring with electrocardiography, non invasive blood pressure, pulse oximetry with perfusion index will be performed as per ASA guidelines  BP, MAP, HR, SPO2, PERFUSION INDEX will be monitored  Under sterile aseptic precautions all patients will receive sub arachanoid block at L3-L4 or L4-L5, level with patients in sitting or lateral position using 25 or 26 G Quincke needle  After cerebrospinal fluid is detected Inj 0.5 Bupivacaine(Hyperbaric) 10mg with 60 mcg of buprenorphine is administered  Oxygen will be attached by use of face mask at 4 L/min to parturient after returned to supine position.  By use of a cold swab level of sensory block will be checked 5 min after spinal injection before starting surgery.  Heart rate (HR), Systolic blood pressure (SBP), Diastolic blood pressure (DBP), Mean arterial pressure (MAP), perfusion index (PI), saturation (SpO2) & respiratory rate(RR) will be recorded at 2 min intervals till the delivery of baby & then 10 min intervals till the end of surgery after the SAB  Decrease in Mean arterial pressure (MAP) of <60 will characterized as hypotension  Hypotension will be treated with IV fluid (Ringer lactate solution),if required vasopressors (Phenylepiphrine ).Total amount of vasopressors used will be noted 
 Pearsons correlation will be used to asses correlation between baseline Perfusion index and hypotension 

Study outcome or end points - Compare the different values of perfusion index in pulse oximetry to predict spinal hypotension in elective LSCS cases and prevent it effectively 

Ethical Considerations- Approval from Chettinad Hospital and Research Institute IHEC (institutional human ethical committee) will be obtained before starting the study. All participants will be informed regarding the purpose of study, benefits, procedure and confidentiality of the research study in their local language and in English. An informed and written consent will be taken from person who willing to participate in study

 Study Duration (in Months / Years)- 2 year
 
References
 .  Minal J. Harde, Prashant B. Ranale, Sarita Fernandes.Perfusion index to predict post spinal hypotension in lower segment caesarean section DOI: 10.4103/joacp.joacp_178_22 
  
 Preoperative baseline peripheral perfusion index as an early predictor of the incidence of hypotension following spinal anaesthesia in elective caesarean section. simi. p. babu , ashwini. b , balasandhiya DOI: 10.47009/jamp.2024.6.2.72 

   study to evaluate perfusion index as a predictor of hypotension following spinal anesthesia for caesarean section Jatin Lal, Teena Bansal, Shweta Bhardwaj, Mamta Jain, Anish Kumar Singh DOI: 10.4103/joacp.JOACP_385_20

   A study to evaluate perfusion index as a predictor of hypotension following spinal anesthesia for caesarean section Jatin Lal, Teena Bansal, Shweta Bhardwaj, Mamta Jain, Anish Kumar Singh DOI: 10.4103/joacp.JOACP_385_26
 
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