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CTRI Number  CTRI/2025/08/093674 [Registered on: 26/08/2025] Trial Registered Prospectively
Last Modified On: 25/08/2025
Post Graduate Thesis  No 
Type of Trial  Interventional 
Type of Study   Surgical/Anesthesia 
Study Design  Randomized, Parallel Group, Active Controlled Trial 
Public Title of Study   Pain relief after gallbladder keyhole surgery: comparing a new nerve block (M-TAPA) with routine local injection and pain medicines 
Scientific Title of Study   Comparison of Modified Thoracoabdominal Nerve Block Through Perichondrial Approach (M-TAPA) versus Port- Site local Infiltration and Opioid based Analgesia in Laparoscopic Cholecystectomy: A Prospective, Randomized Control Study" 
Trial Acronym  M-TAPA 
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Degutla Karthik Chary 
Designation  Junior Consultant anaesthesiologist  
Affiliation   
Address  Department of anaesthesiology, AIG Hospitals, Gachibowli, hyderabad

Hyderabad
TELANGANA
500032
India 
Phone  8328535344  
Fax    
Email  Kd95.work@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Degutla Karthik Chary 
Designation  Junior Consultant anaesthesiologist  
Affiliation   
Address  Department of anaesthesiology, AIG Hospitals, Gachibowli, Hyderabad

Hyderabad
TELANGANA
500032
India 
Phone  8328535344  
Fax    
Email  Kd95.work@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Degutla Karthik Chary 
Designation  Junior Consultant anaesthesiologist  
Affiliation   
Address  Department of anaesthesiology, AIG Hospitals, Gachibowli, Hyderabad

Hyderabad
TELANGANA
500032
India 
Phone  8328535344  
Fax    
Email  Kd95.work@gmail.com  
 
Source of Monetary or Material Support  
Nil 
 
Primary Sponsor  
Name  Degutla Karthik Chary 
Address  AIG Hospitals, 1-66/AIG/2 to 5, Mindspace Road, Gachibowli, Hyderabad, Telangana 500032 
Type of Sponsor  Private hospital/clinic 
 
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 Degutla Karthik Chary  AIG Hospitals   AIG Hospitals, Department of anaesthesiology, 1-66/AIG/2 to 5, Mindspace Road, Gachibowli, Hyderabad, Telangana 500032
Hyderabad
TELANGANA 
8328535344

Kd95.work@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
IEC-AIG  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: K800||Calculus of gallbladder with acutecholecystitis,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Intervention  Modified Thoracoabdominal Nerve Block through Perichondrial Approach (M-TAPA)  Administered after induction of general anesthesia, before surgical incision. Bilateral injections under ultrasound guidance at the level of the 10th costal cartilage, in the fascial plane between the transversus abdominis muscle and costal cartilage. 20 ml of 0.2 percent ropivacaine on each side with 21 G 100 mm echogenic needle. 
Comparator Agent  Port Site Infiltration   Administered at the end of surgery.Direct infiltration of port sites under aseptic precautions. 0.2 percent ropivacaine 20 ml  
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  75.00 Year(s)
Gender  Both 
Details  ASA Physical Status 1,2,3
Elective laparoscopic cholecystectomy under general anesthesia
Patients who provide written informed consent 
 
ExclusionCriteria 
Details  Patient refusal
ASA 4 or higher
Emergency or open cholecystectomy
Coagulopathy or anticoagulant therapy
Local infection at block site
Allergy to local anesthetics
Chronic opioid use or chronic pain disorder
Severe hepatic or renal impairment
 
 
Method of Generating Random Sequence   Computer generated randomization 
Method of Concealment   Sequentially numbered, sealed, opaque envelopes 
Blinding/Masking   Participant and Outcome Assessor Blinded 
Primary Outcome  
Outcome  TimePoints 
Postoperative pain scores using Numeric Rating Scale (NRS, 0–10)  At immediate post operative period or 0 hours, 2 hours, 4 hours, 8 hours, 12 hours and 24 hours post operatively. 
 
Secondary Outcome  
Outcome  TimePoints 
Total opioid consumption in 24 hours (IV tramadol/fentanyl equivalent) intraoperative and postopertive  cumulative intraoperative and postoperative 
Hemodynamic response to surgical stimulus (MAP and HR)  At trocar insertion, 5, 10, 15 min after pneumoperitoneum, and at extubation 
Hemodynamics in postoperative period (MAP and HR)  At 1, 2, 4, 8, 12, and 24 hours postoperatively
 
Incidence of postoperative nausea and vomiting (PONV)  0–24 hours postoperatively 
Patient satisfaction score (Likert scale)  At 24 hours
 
 
Target Sample Size   Total Sample Size="113"
Sample Size from India="113" 
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)   05/09/2025 
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="2"
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  

This randomized, parallel group, active controlled clinical trial will evaluate the analgesic efficacy of ultrasound guided Modified Thoracoabdominal Nerve Block through Perichondrial Approach (M TAPA) compared with conventional port site infiltration with local anesthetic in patients undergoing laparoscopic cholecystectomy. 113 adult patients (ASA I to III, aged 18 to 75 years) scheduled for elective laparoscopic cholecystectomy under general anesthesia will be randomized into two groups. Group A will receive bilateral M TAPA block after induction of anesthesia, while Group B will receive conventional port site infiltration with local anesthetic. The primary outcome will be postoperative pain scores assessed using the Numeric Rating Scale at predefined time intervals up to 24 hours. Secondary outcomes include total opioid consumption, intraoperative and postoperative hemodynamic responses, incidence of postoperative nausea and vomiting, sedation scores, return of bowel function, and patient satisfaction. This study aims to determine whether M TAPA provides superior analgesia, reduces opioid requirements, and improves recovery compared to routine practice.

 
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