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CTRI Number  CTRI/2025/12/098509 [Registered on: 05/12/2025] Trial Registered Prospectively
Last Modified On: 04/12/2025
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Drug 
Study Design  Randomized, Parallel Group, Active Controlled Trial 
Public Title of Study   Comparison of Fractionated versus Bolus Spinal Anaesthesia in Elderly Surgical Patients 
Scientific Title of Study   Comparison of Haemodynamics Between Fractionated and Bolus Injection in Spinal Anaesthesia for Elderly Patients: A Randomized Controlled Trial 
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 Mohanapriya S 
Designation  Post Graduate  
Affiliation  SRM MEDICAL COLLEGE HOSPITAL AND RESEARCH CENTRE  
Address  Department of Anaesthesiology SRM Medical College Hospital Potheri Kattankulathur Kancheepuram

Kancheepuram
TAMIL NADU
603203
India 
Phone  7395970888  
Fax    
Email  drmohanapriyavs@gmail.com   
 
Details of Contact Person
Scientific Query
 
Name  Dr Venkatraman  
Designation  Medical Superintendent and Professor  
Affiliation  SRM MEDICAL COLLEGE HOSPITAL AND RESEARCH CENTRE  
Address  Department of Anaesthesiology SRM Medical College Hospital Potheri Kattankulathur Kancheepuram

Kancheepuram
TAMIL NADU
603203
India 
Phone  9894581455  
Fax    
Email  drvenkat94@gmail.com   
 
Details of Contact Person
Public Query
 
Name  Dr Venkatraman  
Designation  Medical Superintentdent and Professor  
Affiliation  SRM MEDICAL COLLEGE HOSPITAL AND RESEARCH CENTRE  
Address  Department of Anaesthesiology SRM Medical College Hospital Potheri Kattankulathur Kancheepuram

Kancheepuram
TAMIL NADU
603203
India 
Phone  9894581455  
Fax    
Email  drvenkat94@gmail.com   
 
Source of Monetary or Material Support  
SRM Medical College Hospital And Research Centre Potheri Kattankulathur Kancheepuram - 603203  
 
Primary Sponsor  
Name  Dr Mohanapriya S 
Address  Department of Anaesthesiology SRM Medical College Hospital and Research Centre Potheri Kattankulathur Kancheepuram 603203  
Type of Sponsor  Other [self ] 
 
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 
Dr Mohanapriya S   SRM Medical College Hospital   Department of ANAESTHESIOLOGY SRM Medical College Hospital Potheri Kattankulathur Kancheepuram Tamilnadu 603203
Kancheepuram
TAMIL NADU 
7395970888

drmohanapriyavs@gmail.com  
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
INSTITUTIONAL ETHICS COMMITTEE  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: M844||Pathological fracture, not elsewhere classified,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Intervention  Fractionated intrathecal injection of 0.5% hyperbaric bupivacaine with fentanyl  A total of 3 ml intrathecal anaesthetic solution (2.5 ml of 0.5% hyperbaric bupivacaine + 0.5 ml fentanyl 25 µg) administered in two fractions: 2 ml initially, followed by 1 ml after a 90-second interval with the spinal needle left in situ. Performed at L3–L4 interspace in sitting position using 25G Quincke needle.monitor till end of surgery upto 24hours upto 24  
Comparator Agent  Single-bolus intrathecal injection of 0.5% hyperbaric bupivacaine with fentanyl  A single bolus intrathecal injection of 3 ml solution consisting of 2.5 ml of 0.5% hyperbaric bupivacaine and 0.5 ml fentanyl 25 µg, administered at once at the L3–L4 interspace in sitting position using a 25G Quincke needle. 
 
Inclusion Criteria  
Age From  65.00 Year(s)
Age To  85.00 Year(s)
Gender  Both 
Details  1 Age Above 65 Years
2 ASA Grade I,II,III
3 Patient Consent  
 
ExclusionCriteria 
Details  1 CONTRAINDICATION TO SPINAL ANAESTHESIA
2 CARDIOVASCULAR DISEASES( ISCHEMIC HEART DISEASE)
3 CEREBROVASCULAR DISEASE
4 SPINE TO DEFORMITIES
5 ALLERGY TO STUDY DRUGS  
 
Method of Generating Random Sequence   Computer generated randomization 
Method of Concealment   Sequentially numbered, sealed, opaque envelopes 
Blinding/Masking   Participant and Investigator Blinded 
Primary Outcome  
Outcome  TimePoints 
Incidence of Hypotension
MAP LESS THAN 65 mmHg OR MORE THAN OR EQUAL TO 20 PERCENTAGE fall from baseline
Incidence of Bradycardia
HR LESS THAN 60 bpm OR MORE THAN 20 PERCENTAGE fall from baseline 
Every 2 minutes for first 10 minutes,Then every 5minutes for next 2 hours and then every 15 minutes for next 4 hours upto 24 hours postoperatively

Every 5 minutes for next 2 hours

Every 15 minutes for next 4 hours

Every 4 hours up to 24 hours postoperatively
Every 2 minutes for first 10 minutes

Every 5 minutes for next 2 hours

Every 15 minutes for next 4 hours

Every 4 hours up to 24 hours postoperatively 
 
Secondary Outcome  
Outcome  TimePoints 
1 onset of sensory block
time from completion of spinal injection T10 dermatomes
2 onset of motor block
time from completion of spinal injection to achieving modified bromage score 3
3 two segment regression time
time from maximum sensory level attained to regression by two dermatomes
4 maximum sensory level attained
5 total vasopressor requirement
number of IV phenylphrine 20 microgram boluses required
6 block characteristics duration of sensory & motor block & total duration of anaesthesia
7 adverse events & complication nausea vomitting shivering giddiness  
1 continuously assessed immediately after injection until T10 is reached upto end of surgery
2 continuously assessed until bromage 3 is reached intraoperatively
3 assessed periodically regression occurs
4 max sensory level attained every 10mins upto 24 hours
5 from onset of block until the end of surgery
6 intraoperative postoperative period upto 24 hours
7 intraoprative & up to 24 hours postoperatively  
 
Target Sample Size   Total Sample Size="100"
Sample Size from India="100" 
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)   26/12/2025 
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="1"
Months="0"
Days="0" 
Recruitment Status of Trial (Global)   Not Applicable 
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   Informed written consent will be taken from all the patients 
Patients will be randomly divided into 2 group , Group F ( Two third dose (2ml) injected initially 90 sec gap and remaining one third dose(1ml) given and Group B ( 3ml will be given 2.5ml of o.5%  hyperbaric bupivacaine with 0.5ml of fentanyl 25 microgram  Utilising a computer generated  table of random numbers before starting the procedure with concealment by sealed envelope method 
on the day of surgery , patient shifted onto the operating room and monitor attached .
In the both spinal anaesthesia will be performed by anaesthesiologist 
patient in sitting position at L3-L4 space with using 25 Guage Quincke spinal needle on each group . first 500ml of ringer lactate solution bolus over 30minutes followed by 500ml/hr onflow .
If MAP less than 65 mmHg iv fluid 100ml within 10 mins if still reduced then phenylephrine 20 microgram iv will be given ( total dose will documents till MAP become more than 65 mmHg. Data documentation primarily hemodynamics monitoring . every 2mins for  first 10 minutes then every 5 minutes for next hours then every 15mins for 4 hours followed by every 4 hours up to 24 hours postoperatively .secondary outcomes as from intraoperatively , onset evaluated by loos of cold sensation ( sensory block ) and onset of motor block by modified Bromage score and two segment regression time. 
 
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