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Clinical Trial Details — Status: Not yet recruiting

Administrative data

NCT number NCT03137732
Other study ID # Surg 058/17
Secondary ID
Status Not yet recruiting
Phase N/A
First received April 26, 2017
Last updated April 28, 2017
Start date June 2017
Est. completion date June 2018

Study information

Verified date April 2017
Source Countess of Chester NHS Foundation Trust
Contact Dale Vimalachandran, MBChB MD FRCS
Phone 01244 365000
Email dale.vimalachandran@nhs.net
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

This is a single centred randomized controlled trial comparing surgeon versus anaesthetist inserted rectus sheath catheters for management of analgesia post major abdominal surgery.


Description:

Background and study aims Pain management post laparotomy (abdominal surgery) can be difficult and in our trust we are increasingly using rectus sheath catheters (RSCs).This is achieved by placing catheters, done by either by the surgeon or anaesthetist into the potential space between the rectus muscle and the posterior rectus sheath. Two catheters are placed, one on either side of the mid-line wound. Local anaesthetic is then infused through the catheters for up to 3 days post-operatively. This provides analgesia to the central abdominal wall in the region of the T7-T11 dermatomes. It only provides analgesia for somatic pain, not visceral pain and hence needs to be used in addition to a multi-modal analgesic regime usually including a patient controlled analgesia device (PCA) containing either morphine or oxycodone. Advantages of a RSC infusion over an epidural include that it can be used in patients with coagulopathy or systemic infection and can be safely performed asleep. It is also less labour intensive to manage on the ward and does not carry the same risks of hypotension and excessive fluid administration that are associated with an epidural.

There is randomised controlled trial evidence that RSC infusions in addition to PCA provide superior analgesia when compared to PCA alone in surgery performed through a midline incision. There is also a randomised controlled trial in progress that is comparing analgesic quality of epidural infusions to RSC with PCA. In most published literature to date, RSC are inserted by the anaesthetist using ultrasound to aid placement. In our hospital, some RSC are inserted by anaesthetists although the majority are performed by surgeons at the end of an operation. This is because we believe that this technique is less time consuming and both insertion techniques result in equivalent analgesia.

The primary aim endpoint of this study is to determine any difference in insertion time for rectus sheath catheters between those inserted by surgeons and those inserted by anaesthetists. Observationally in our hospital, there is no difference in quality of analgesia provided by the two insertion techniques. However, surgical insertion of RSC causes less disruption of an operation as the patient already has their abdomen draped with sterilised skin as part of their surgical procedure. Also, surgical insertion of RSC with an open abdomen is potentially easier than ultrasound guided insertion by an anaesthetist before an operation.

Who can participate? Any adults undergoing emergency or elective laparotomy (major abdominal surgery.) What does the study involve? All participants will receive rectus sheath catheters but will be randomly allocated to each group. Following the surgery, participants will have to answer questions about their pain on 3 consecutive days.

What are the possible benefits and risks of participating? There are no specific benefits to patients and the risks are the same if they were in the trial or not as it is routine in our hospital to use rectus sheath catheters as a means of analgesia post laparotomy. These risks include bleeding, dislodgement of catheter and failure of catheter and are low risk.

Where is the study run from? This a single centre study at the Countess of Chester Hospital in the United Kingdom.

When is study starting and how long is it expected to run for? We anticipate recruiting patient from June 2017 for 6 months. How long will the trial be recruiting participants for? No funding is required as all data collection will be carried out by doctors working in the departments but the study is being supported and supervised by the Hospital's Research and Development department.


Recruitment information / eligibility

Status Not yet recruiting
Enrollment 50
Est. completion date June 2018
Est. primary completion date December 2017
Accepts healthy volunteers No
Gender All
Age group 18 Years and older
Eligibility Inclusion Criteria:

- Patients aged over 18 years

- Able to provide informed consent

- Undergoing elective, open colorectal surgery or emergency laparotomy via a midline incision extending above the umbilicus

- Weight of 50kg or over to standardise the analgesia given.

Exclusion Criteria:

- Weight of less than 50kg

- Patients unable to consent

- Age under 18 years

- Inability to insert RSC - local infection or severe coagulopathy

- Allergy to local anaesthetic

- Chronic pre-operative use of strong opioids or gabapentins and or chronic pain syndromes

Study Design


Intervention

Device:
Rectus Sheath Catheter
Insertion of rectus sheath catheter via either method

Locations

Country Name City State
n/a

Sponsors (1)

Lead Sponsor Collaborator
Countess of Chester NHS Foundation Trust

Outcome

Type Measure Description Time frame Safety issue
Primary Time taken to insert rectus sheath catheters This will be recorded in theatre on a stopwatch and recorded. under 15 minutes
Secondary Pain scores Patients will be asked to score their pain in recovery and on days 0,1,2,3 post operatively. This will be graded using a Numeric Pain Rating Scale. 4 days
Secondary Peri-operative analgesic use Analgesic use intra-operatively and post-operatively for 3 days. This will include strong opioids, paracetamol, NSAIDs, codeine, ketamine, IV lignocaine, tramadol, clonidine and PCA usage post-operatively. 4 days
Secondary Catheter issues This includes haemorrhage, dislodgement, blockage 4 days
Secondary Duration of catheter use 4 days
Secondary TIme to diet and mobilisation likely 1-3 days
Secondary Time to discharge approximately 7 days
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