Condition or disease | Intervention/treatment | Phase |
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Breast Cancer | Procedure: Subpectoral plexus block (low dose) Procedure: Subpectoral plexus block (High dose) | Not Applicable |
Study Type : | Interventional (Clinical Trial) |
Estimated Enrollment : | 100 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Intervention Model Description: | Patients will be randomly assigned to received either 10ml of 0.25% levobupivacaine (Group LD) or 20ml of 0.25% levobupivacaine (Group HD). The randomization sequence will be generated using an online randomization software (www.randomization.com). The randomization sequence will be assigned as 1=low dose 10ml (Group LD) and 2=high dose 20ml (Group HD). The group allocation will be prepared by a computer officer (third party) in the Department of Anaesthesia & Intensive Care of the Chinese University of Hong Kong. |
Masking: | Double (Participant, Outcomes Assessor) |
Masking Description: | Patients in both study groups will not be able to know the dosage they will receive during the block and therefore will be blinded to group allocation. The "outcome assessor" (research nurse) will not be presented in the procedure room during block placement and thus will also be blinded to group allocation. The anesthesiologist (principal investigator) performing the allocated block will take no further part in the study after block placement. |
Primary Purpose: | Treatment |
Official Title: | Ultrasound-guided Subpectoral Plexus Block With Multi-level Thoracic Paravertebral Block for Surgical Anaesthesia During Primary Breast Cancer Surgery: A Prospective Randomized Double-blind Trial |
Actual Study Start Date : | August 6, 2021 |
Estimated Primary Completion Date : | August 2022 |
Estimated Study Completion Date : | September 2022 |
Arm | Intervention/treatment |
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Active Comparator: Low dose
After three injections of thoracic paravertebral block at T2, T4, T6 (a total of 21ml of 0.5% levobupivacaine with 1:200,000 adrenaline) under ultrasound guidance, patients will be put in supine position with ipsilateral arm and elbow flexed. Ultrasound scan will be performed below collarbone region, 5ml of 0.25% levobupivacaine will be injected in the first plane between pectoralis major and minor. Then under direct ultrasound visualization, the remaining 5ml of 0.25% levobupivacaine will be injected between the second plane of pectoralis minor and serratus anterior muscle (a total of 10ml will be given).
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Procedure: Subpectoral plexus block (low dose)
It is one type of peripheral nerve blocks for surgery over the chest. Patients will have an ultrasound scan and nerve block with local anesthetic (LA) agent (0.25% levobupivacaine 10ml) injected 2 target sites through one skin puncture. One at the myofascial plane between the pectoralis major and minor (5ml of LA) and then under direct ultrasound visualization, the needle will be redirected and the remaining 5ml of LA will be injected at the plane between the pectoralis minor and the serratus anterior muscle, close to the origin of thoracoacromial artery from the axillary artery at the level of the third rib.
Other Name: Drug (0.25% Chirocaine)
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Active Comparator: High dose
After three injections of thoracic paravertebral block at T2, T4, T6 (a total of 21ml of 0.5% levobupivacaine with 1:200,000 adrenaline) under ultrasound guidance, patients will be put in supine position with ipsilateral arm and elbow flexed. Ultrasound scan will be performed below collarbone region, 10ml of 0.25% levobupivacaine will be injected in the first plane between pectoralis major and minor. Then under direct ultrasound visualization, the remaining 10ml of 0.25% levobupivacaine will be injected between the second plane of pectoralis minor and serratus anterior muscle (a total of 20ml will be given).
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Procedure: Subpectoral plexus block (High dose)
It is one type of peripheral nerve blocks for surgery over the chest. Patients will have an ultrasound scan and nerve block with local anesthetic (LA) agent (0.25% levobupivacaine 20ml) injected 2 target sites through one skin puncture. One at the myofascial plane between the pectoralis major and minor (10ml of LA) and then under direct ultrasound visualization, the needle will be redirected and the remaining 10ml of LA will be injected at the plane between the pectoralis minor and the serratus anterior muscle, close to the origin of thoracoacromial artery from the axillary artery at the level of the third rib.
Other Name: Drug (0.25% Chirocaine)
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Ages Eligible for Study: | 18 Years to 80 Years (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
Exclusion Criteria:
Contact: Winnie Samy, RN, BN, MSc | 3505 2734 | wsamy@cuhk.edu.hk |
Hong Kong | |
North District Hospital | Recruiting |
Sheung Shui, New Territories, Hong Kong | |
Contact: Winnie Samy, RN, BN, MSc +85226838092 wsamy@cuhk.edu.hk | |
Principal Investigator: Manoj K Karmakar, MD |
Principal Investigator: | Manoj K Karmakar, MD | Chinese University of Hong Kong |
Tracking Information | |||||
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First Submitted Date ICMJE | June 17, 2021 | ||||
First Posted Date ICMJE | June 21, 2021 | ||||
Last Update Posted Date | September 1, 2021 | ||||
Actual Study Start Date ICMJE | August 6, 2021 | ||||
Estimated Primary Completion Date | August 2022 (Final data collection date for primary outcome measure) | ||||
Current Primary Outcome Measures ICMJE |
Proportion of patients requiring intraoperative ketamine [ Time Frame: during surgery ] The total number of patients (in percentage) requiring intraoperative ketamine bolus during the surgery
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Original Primary Outcome Measures ICMJE | Same as current | ||||
Change History | |||||
Current Secondary Outcome Measures ICMJE |
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Original Secondary Outcome Measures ICMJE | Same as current | ||||
Current Other Pre-specified Outcome Measures | Not Provided | ||||
Original Other Pre-specified Outcome Measures | Not Provided | ||||
Descriptive Information | |||||
Brief Title ICMJE | Subpectoral Plexus Block With Multi-level TPVB for Surgical Anesthesia During Primary Breast Cancer Surgery | ||||
Official Title ICMJE | Ultrasound-guided Subpectoral Plexus Block With Multi-level Thoracic Paravertebral Block for Surgical Anaesthesia During Primary Breast Cancer Surgery: A Prospective Randomized Double-blind Trial | ||||
Brief Summary | The objective of this study is to compare two different doses of local anesthetics (10ml vs 20ml of 0.25% levobupivacaine) for subpectoral plexus block (SPPB) in addition to ultrasound guided multi-level of thoracic paravertebral block (m-TPVB) for surgical anaesthesia for major primary breast cancer surgery. | ||||
Detailed Description | Primary breast cancer surgery is one of the most commonly performed surgeries worldwide. It is associated with significant acute postoperative pain and a high incidence of chronic postsurgical pain. Regional anaesthetic techniques are shown to improve outcomes such as postoperative analgesia, nausea, vomiting, delirium and promote early recovery. Currently majority of the breast cancer surgery is performed under general anaesthesia with a multimodal analgesic regimen with or without regional blocks. In fact, it is proved that breast cancer surgery can be done solely under regional anesthesia using multilevel thoracic paravertebral block (TPVB) with deep sedation, but rescue analgesia are often required intraoperatively, especially when surgeons handles the pectoralis muscle. Current evidence suggest that pectoral nerves, which are often described as a pure motor nerves that control movements only, also able to send noxious stimulation such as pain from the pectoral muscles and its deep fascia (via afferent nociceptive fibers) to the brain. Principal investigator proposes that adding a subpectoral plexus block (SPPB) will stop a wider spectrum of afferent nociceptive fibers from sending any pain signals than having thoracic paravertebral block alone. However, there is no report on the amount of local anaesthetic (LA) required to achieve surgical anaesthesia for breast surgery. The aim of this study is to evaluate the effectiveness of two different doses (10ml vs 20ml of 0.25% levobupivacaine) of local anaesthetic (LA) for subpectoral plexus in addition to 3 levels of TPVB injections at T2, T4, and T6 under ultrasound guidance for surgical anaesthesia for major breast cancer surgery. | ||||
Study Type ICMJE | Interventional | ||||
Study Phase ICMJE | Not Applicable | ||||
Study Design ICMJE | Allocation: Randomized Intervention Model: Parallel Assignment Intervention Model Description: Patients will be randomly assigned to received either 10ml of 0.25% levobupivacaine (Group LD) or 20ml of 0.25% levobupivacaine (Group HD). The randomization sequence will be generated using an online randomization software (www.randomization.com). The randomization sequence will be assigned as 1=low dose 10ml (Group LD) and 2=high dose 20ml (Group HD). The group allocation will be prepared by a computer officer (third party) in the Department of Anaesthesia & Intensive Care of the Chinese University of Hong Kong. Masking: Double (Participant, Outcomes Assessor)Masking Description: Patients in both study groups will not be able to know the dosage they will receive during the block and therefore will be blinded to group allocation. The "outcome assessor" (research nurse) will not be presented in the procedure room during block placement and thus will also be blinded to group allocation. The anesthesiologist (principal investigator) performing the allocated block will take no further part in the study after block placement. Primary Purpose: Treatment
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Condition ICMJE | Breast Cancer | ||||
Intervention ICMJE |
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Study Arms ICMJE |
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Publications * | Not Provided | ||||
* Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline. |
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Recruitment Information | |||||
Recruitment Status ICMJE | Recruiting | ||||
Estimated Enrollment ICMJE |
100 | ||||
Original Estimated Enrollment ICMJE | Same as current | ||||
Estimated Study Completion Date ICMJE | September 2022 | ||||
Estimated Primary Completion Date | August 2022 (Final data collection date for primary outcome measure) | ||||
Eligibility Criteria ICMJE |
Inclusion Criteria:
Exclusion Criteria:
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Sex/Gender ICMJE |
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Ages ICMJE | 18 Years to 80 Years (Adult, Older Adult) | ||||
Accepts Healthy Volunteers ICMJE | No | ||||
Contacts ICMJE |
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Listed Location Countries ICMJE | Hong Kong | ||||
Removed Location Countries | |||||
Administrative Information | |||||
NCT Number ICMJE | NCT04933266 | ||||
Other Study ID Numbers ICMJE | mTPVB SPPB Ver 2 | ||||
Has Data Monitoring Committee | No | ||||
U.S. FDA-regulated Product |
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IPD Sharing Statement ICMJE | Not Provided | ||||
Responsible Party | Prof Manoj K Karmakar, Chinese University of Hong Kong | ||||
Study Sponsor ICMJE | Chinese University of Hong Kong | ||||
Collaborators ICMJE | Not Provided | ||||
Investigators ICMJE |
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PRS Account | Chinese University of Hong Kong | ||||
Verification Date | August 2021 | ||||
ICMJE Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP |