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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT02814084
Other study ID # STH18497
Secondary ID
Status Completed
Phase N/A
First received
Last updated
Start date September 13, 2016
Est. completion date February 9, 2020

Study information

Verified date May 2023
Source Sheffield Teaching Hospitals NHS Foundation Trust
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

The question this research project wants to explore is whether using the Prevena Incision Management System (Prevena) will improve sternal wound edge oxygenation in patients undergoing Coronary Artery bypass surgery with Bilateral Internal Mammary Artery grafts.


Description:

Coronary artery bypass is the gold standard surgical treatment of patients with complex coronary disease. It is a common operation and more than 16000 procedures per year are carried out in the UK. Recent publications suggest that during the bypass procedure both left and right internal mammary arteries should be used to bypass coronary stenoses. It was noted that using both internal mammary arteries will result in even better long term survival with improved freedom from cardiac events such as myocardial infarction or further coronary intervention than using. The major drawback of using both internal mammary arteries is the increased risk of sternal wound infection and breakdown. The investigators will use Near Infra-Red Spectroscopy (NIRS) to assess the wound edge oxygenation delivery. The NIRS INVOS system the investigators use within Sheffield Teaching Hospitals can measure oxygenation of soft tissue to a certain depth making it suitable for the assessment of wound edge oxygen delivery. Prevena is commercially available and has a CE mark. The Prevena wound management system differs from conventional wound dressings, it applies negative pressure to the closed wound for 7 days. Wound complications/infections are decreased when this type of wound management system is used. Studies suggest that Prevena achieves these outcomes because of an increase of perfusion in the wound edges and keeping the wound dry. Patients will be randomised to either the Prevena wound management or their standard of care NHS wound management for their procedure. The oxygenation and outcomes of the wounds will be compared through data collection and the patients followed up during their routine inpatient care and 6 week outpatient appointment.


Recruitment information / eligibility

Status Completed
Enrollment 80
Est. completion date February 9, 2020
Est. primary completion date February 9, 2020
Accepts healthy volunteers No
Gender All
Age group 18 Years and older
Eligibility Inclusion Criteria: - Eligible patients are those who require isolated coronary artery bypass surgery, who need at least 2 bypass grafts, and who are deemed suitable by the operating surgeon to have both right and left internal mammary arteries harvested as conduits Exclusion Criteria: - Require additional procedures in addition to the coronary bypass or need for internal mammary artery harvest for feasibility study - Who are deemed by the operating surgeon as unsuitable for bilateral internal mammary artery harvest because of - Age (75 or older where prognostic benefit of using both internal mammary arteries has been questioned), - Obesity with a BMI which is higher than 35 (increased risks of wound infection) - Diabetes (of any type) (increased risks of infection.)

Study Design


Related Conditions & MeSH terms


Intervention

Device:
Bilateral Internal Mammary Artery grafts
Sternal Wound Edge Oxygenation in patients undergoing Coronary Artery bypass surgery with Bilateral Internal Mammary Artery grafts
Prevena
The Prevena wound management system applies negative pressure to the closed wound for up to 7 days and is associated with lower rates of surgical site infection.

Locations

Country Name City State
United Kingdom Sheffield Teaching Hospitals NHS FT Sheffield England

Sponsors (2)

Lead Sponsor Collaborator
Sheffield Teaching Hospitals NHS Foundation Trust 3M

Country where clinical trial is conducted

United Kingdom, 

References & Publications (4)

Briffa N. Surgeons' attitudes to intraoperative death. Cardiac surgeons might have different attitudes. BMJ. 2001 Aug 11;323(7308):341-2. No abstract available. — View Citation

Holmes C, Briffa N. Patient-Reported Outcome Measures (PROMS) in patients undergoing heart valve surgery: why should we measure them and which instruments should we use? Open Heart. 2016 May 5;3(1):e000315. doi: 10.1136/openhrt-2015-000315. eCollection 20 — View Citation

Rowe R, Iqbal J, Murali-Krishnan R, Sultan A, Orme R, Briffa N, Denvir M, Gunn J. Role of frailty assessment in patients undergoing cardiac interventions. Open Heart. 2014 Feb 1;1(1):e000033. doi: 10.1136/openhrt-2013-000033. eCollection 2014. — View Citation

Solodkyy A, Shalhoub J, Chetty G, Briffa NP. A rare case of giant coronary artery aneurysm in the context of multiple arterial aneurysms. Int J Surg Case Rep. 2012;3(7):311-3. doi: 10.1016/j.ijscr.2012.03.023. Epub 2012 Mar 29. — View Citation

Outcome

Type Measure Description Time frame Safety issue
Primary NIRS measurement of the inferior third of the parasternal region and left forearm assessment NIRS assessment of the left forearm will also be performed at the same time acting as a control to take into account factors other than wound perfusion that influence oxygen delivery. The difference of the two readings will be the final measurement used for comparison. Measurements taken up to 6 weeks post sternotomy wound dressing
Secondary Wounds will be scored according to the ASEPSIS scoring system This will be done by an observer who is blinded to the dressing used. On the day of dressing removal and at the 6 week postoperative outpatient visit.
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