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CTRI Number  CTRI/2025/03/081812 [Registered on: 06/03/2025] Trial Registered Prospectively
Last Modified On: 04/03/2025
Post Graduate Thesis  No 
Type of Trial  Interventional 
Type of Study   Surgical/Anesthesia 
Study Design  Randomized, Parallel Group Trial 
Public Title of Study   Comparison of the use of two techniques with deposition of medicine around quadratus lumborum and erector spinae muscle in providing pain relief in patients undergoing surgery for kidney stone removal. 
Scientific Title of Study   Efficacy of transmuscular quadratus lumborum block versus erector spinae plane block for providing analgesia in patients undergoing percutaneous nephrolithotomy under general anaesthesia – 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 Shruthi R 
Designation  Senior Resident 
Affiliation  St. Johns Medical College Hospital 
Address  2nd Floor, OT Complex, Department of Anaesthesiology, St. Johns Medical College Hospital, Sarjapur Road, Bengaluru

Bangalore
KARNATAKA
560034
India 
Phone  9741872128  
Fax    
Email  shruthi.95r@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr Shruthi R 
Designation  Senior Resident 
Affiliation  St. Johns Medical College Hospital 
Address  2nd Floor, OT Complex, Department of Anaesthesiology, St. Johns Medical College Hospital, Sarjapur Road, Bengaluru


KARNATAKA
560034
India 
Phone  9741872128  
Fax    
Email  shruthi.95r@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Dr. M. Manjuladevi 
Designation  Professor 
Affiliation  St. Johns Medical College Hospital 
Address  2nd Floor, OT Complex, Department of Anaesthesiology St. Johns Medical College, Sarjapur Road, Bengaluru

Bangalore
KARNATAKA
560034
India 
Phone  9449059395  
Fax    
Email  drmanjula95@yahoo.com  
 
Source of Monetary or Material Support  
St. Johns National Academy of Health Sciences Sarjapur Road Bangalore - 560034 Karnataka India  
 
Primary Sponsor  
Name  Dr Shruthi R 
Address  2nd Floor, OT Complex, Department of Anaesthesiology, St. Johns Medical College Hospital, Sarjapur Road, Bengaluru, Karnataka, India Pincode - 560034  
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 Shruthi R  St Johns Medical College, Bengaluru  Room No: 4, 2nd Floor, Operation Theatre Complex, St Johns Medical College Hospital, Sarjapur Road, Koramangala, Bangalore - 560034
Bangalore
KARNATAKA 
9741872128

shruthi.95r@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Institutional Ethics Committee, St Johns Medical College and Hospital  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: O||Medical and Surgical,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Comparator Agent  Erector Spinae Plane Block  After administration of general anaesthesia, in prone position, the T11 vertebra will be identified by counting upwards from the L3-L4 interspace at the Tuffier’s line (highest point of the iliac crest). A low- or high-frequency linear probe will be placed in the midline in the longitudinal orientation. The transverse process of T11 will be identified by sliding the probe laterally, 3-4 cm away from the midline. A B. Braun Stimuplex Ultra 360° 100 mm needle will be inserted in-plane and advanced until the tip comes in contact with the lateral edge of the transverse process. The goal is to place the local anaesthetic between the transverse process and the erector spinae muscle overlying it. 30 ml of 0.25% Bupivacaine with 8mg Dexamethasone will be injected at in small aliquots after confirming negative aspiration for blood. The spread of the drug will be visualised as it lifts the erector spinae muscle off the bony shadow of the transverse process.  
Intervention  Transmuscular Quadratus Lumborum Block  After administration of general anaesthesia, in prone position, a low-frequency curvilinear USG probe will be placed in the transverse plane just above the iliac crest at the posterior axillary line, corresponding to the transverse process of L4 vertebra. The ‘Shamrock sign’ will be identified. Under USG guidance, a B. Braun Stimuplex Ultra 360° 100 mm needle will be inserted in-plane and allowed to traverse through the quadratus lumborum (QL) muscle until the tip pierces the epimysium of the muscle and lies in the interspace between the QL muscle and the psoas major along with the transversalis fascia. 30 ml of 0.25% Bupivacaine with 8mg Dexamethasone will be injected at this point in small aliquots after confirming negative aspiration for blood.  
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  89.00 Year(s)
Gender  Both 
Details  1) Adult patients aged 18 to 89 years posted for unilateral percutaneous nephrolithotomy under general anaesthesia.
2) Patients belonging to ASA I to III physical status.
 
 
ExclusionCriteria 
Details  1) Pregnant women
2) Patients with coagulopathies, thrombocytopenia
3) Infection at proposed site of infection
4) Hypersensitivity or known allergy to local anaesthetics
5) Patients with musculoskeletal deformities of the spine
6) Patients with psychiatric illness or cognitive dysfunction
7) Patients with uncontrolled hypertension
8) Patients on beta blockers 
 
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 determine the duration of analgesia provided by both techniques  Duration of analgesia measured starting from the time of block administration in the operation theatre till the first analgesic demand by the patient in the postoperative period in the ward, measured in minutes. 
 
Secondary Outcome  
Outcome  TimePoints 
Intraoperative haemodynamic responses to pain and surgical stimulation – Heart rate (beats per minute), systolic blood pressure (mm Hg), diastolic blood pressure (mm Hg) and mean arterial pressure (mm Hg).  Intraoperative period 
Numeric Rating Scale to assess severity of pain.  6, 12, 24 and 48 hours post operatively 
Number of rescue boluses of Inj. Pethidine in the first 24 hours after surgery and total dose (mg) provided during hospital stay in 24 hours.  24 hour period after surgery 
iv. Side effects – hypotension, bradycardia, itching, drowsiness, nausea and vomiting.  24 hour period after suregry 
 
Target Sample Size   Total Sample Size="40"
Sample Size from India="40" 
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)   24/03/2025 
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="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  

Percutaneous Nephrolithotomy (PCNL) is currently one of the most efficient and commonly performed urological procedures and is the gold-standard treatment modality for large renal stones. Despite limiting the size of the skin incision, the use of continuous irrigation causing pelvicalyceal dilatation and the insertion of a nephrostomy tube can result in severe postoperative pain for the patient which further contributes to restricted ambulation, prolonged recovery and a longer hospital stay. Given the frequency at which the surgical procedure is being performed, it is essential that we investigate and identify the best possible method of providing analgesia for these patients.

Regional anaesthesia provides many benefits including ease of performance, remarkable safety profile and decreased opioid consumption. The gold standard approaches to pain management in PCNL surgeries are epidural analgesia and thoracic paravertebral blocks, however the technically complexicity and associated complications have lead to the emergence of simpler and effective regional blocks. Literature review has revealed that the transmuscular quadratus lumborum block (TQLB) and the erector spinae plane block (ESPB) have shown much promise when compared to other regional techniques or the use of opioid analgesia. However, there has never been a published study comparing the efficacy of these two regional approaches for PCNL surgery. With this study we aim to compare  the analgesic efficacy of TQLB and ESPB in patients undergoing PCNL surgery.

 
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