An interventional study of TPVB and IV Lidocaine infusion in Pain Management After Major Breast Surgery and Well Being After Major Breast Surgery, sponsored by Mahidol University. Not yet recruiting at 1 site in Thailand. Open to participants aged 18 Years to 75 Years. Per ClinicalTrials.gov, last updated 2026-09-16.
Sponsored by Mahidol University · Not applicable, Interventional, and Treatment
The goal of this clinical trial is to learn whether an intravenous lidocaine infusion (IVLI) works as well as a thoracic paravertebral block (TPVB) - the current standard nerve-block technique - for improving recovery after breast cancer surgery. It will also learn about the safety of both approaches. The main questions it aims to answer are:
Does IVLI provide a similar quality of recovery (measured by the QoR-15 score at 24 hours) as TPVB? Does IVLI control pain during the first 24 hours after surgery (measured at rest and with arm movement) as well as TPVB?
Participants will:
Undergo their planned breast cancer surgery (mastectomy or breast-conserving surgery with sentinel lymph node biopsy) under general anaesthesia, along with either the TPVB injection or the IVLI infusion, assigned at random Attend a preoperative visit the day before surgery to learn how to use the pain and self-quality-of-recovery questionnaire (QoR-15) Fill out a QoR-15 once a day for the first 48 hours after surgery Participants' pain score in hospital recorded during the first 48 hours after surgery, with rescue pain medication available if needed
10,054 studies on the registry are indexed under Pain; 1,649 are open to participants now.
This study's planned enrollment of 112 is above the median of 66 across 8,493 interventional studies indexed under Pain.
Browse Pain studies →Mahidol University is the lead sponsor of 747 studies on the registry; 119 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
The anaesthetists’ scale of health before surgery: I is healthy, II has a mild illness that is under control, III a severe one, IV a severe illness that is a constant threat to life. V and VI are used for the critically ill and for organ donors.
A biopsy takes a small piece of tissue to examine. “Archival tissue” is a sample already taken, for example at diagnosis, and kept by the hospital.
Whether a stored sample will do depends on when it was taken, how much there is and what the study needs. Ask whether the study accepts your stored sample or needs a new biopsy.
ASA physical status
The anaesthetists’ scale of health before surgery: I is healthy, II has a mild illness that is under control, III a severe one, IV a severe illness that is a constant threat to life. V and VI are used for the critically ill and for organ donors.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Biopsy and archival tissue
A biopsy takes a small piece of tissue to examine. “Archival tissue” is a sample already taken, for example at diagnosis, and kept by the hospital.
Whether a stored sample will do depends on when it was taken, how much there is and what the study needs. Ask whether the study accepts your stored sample or needs a new biopsy.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
US guided TPVB
Procedure: TPVB · Drug: IV placebo infusion
IV Lidocaine infusion
Drug: IV Lidocaine infusion · Procedure: sham subcutaneous infiltration
Single shot thoracic paravertebral block with 0.5% Ropivacaine plus adrenaline 5 mcg/ml (total mixture 25 ml)
Patients receiving IV Lidocaine infusion of 1.5 mg/kg in 10 mins then continue 1.5mg/kg/h (= 0.075ml/kg in 10 mins then 0.075ml/kg/h) intraoperatively
2% Lidocaine 1-2 ml subcutaneously infiltrate to blind the patients and outcome assessor
infusion of normal saline at a same rate as IV LI (0.075ml/kg in 10 mins then 0.075ml/kg/h)
Quality of recovery 15 (QoR15) score at 24 hours
Patient-reported QoR 15 at 24-hour and 48-hour postoperative
Time frame: From enrollment to 48 hours postoperatively
Plan to share: Yes
No publications or documents are linked to this record.
Start is estimated for Oct 2026; primary completion for Sep 2029, 35 months later.
Of 3,731 non-industry interventional studies with no phase under Pain, half reached primary completion within 10 months of starting (the median), counting those still running; a quarter within 4 and three quarters within 23. This study's planned 35 months is above that.
Counting every sponsor, half of 3,830 studies reached it within 10 months; a quarter within 4 and three quarters within 23.
How these figures are worked out, and which studies are left out of them.
This study is not yet recruiting, as verified in Sep 2026. You cannot join it, but the record below documents what was studied.
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Studies of the drug tested here: Lidocaine