Please select the eligibility criteria that correspond to the clinical trial below.
Title: Single Center Prospective Randomized Control Trial on Negative Pressure Wound Therapy for Primarily Closed Groin Incisions Following Lower-limb Re-vascularization to Reduce Surgical Site Infection
Brief Summary: The purpose of this study is to investigate the current standard of wound care following vascular operations compared to to a negative pressure wound therapy (vacuum dressing) and the rate of surgical site infections (SSIs) in patients undergoing surgery to restore blood flow to the lower limb(s).

Negative pressure wound therapy consists of a closed, sealed system that produces negative pressure (vacuum) to the wound surface. The device itself consists of open-cell foam that is sealed with an occlusive adhesive dressing (covers and sticks to the incision) and suction is maintained by connecting suction tubes to a vacuum pump and waste collector.

The investigators objectives are to determine whether there will be any reduction in surgical site infection and this potential reduction will influence length of hospital stay, emergency room visits, antibiotic use and need for re-operation.


Options:
A: Inclusion Criteria:

* Pregnant women with BMI \> 40 undergoing a cesarean delivery at Parkland Health and Hospital System.

Exclusion Criteria:

* Any patient not meeting inclusion criteria will be deemed ineligible.
* All HIV positive patients will be excluded due to the increased risk of infectious complications in these patients.
* Although patients on anticoagulants can use NPWT, they will be excluded as there may be an increased risk of bleeding in these patients.
* according to the wound therapy manufacturer's instructions patients with:

  * fragile skin
  * allergy to silver or acrylic adhesives
  * a malignancy in the wound bed or margins of the wound bed
  * non-enteric and unexplored fistulas
  * necrotic tissue with eschar present
  * exposed arteries, veins, nerves or organs, anastomotic sites, or surgical suction are not candidates for usage of the device.
B: Inclusion Criteria:

* BMI \> 35
* Previous femoral exposure
* Undergoing lower-limb revascularization

Exclusion Criteria:

* Cannot obtain seal
* Non-primary wound closure
* Pre-existing infection
* Endovascular repair
C: Inclusion Criteria:

* Written informed consent
* Post-surgical subcutaneous abdominal wound healing impairment
* Minimum wound size eligible for the application of the randomized treatment- Inclusion, randomization, adequate wound pre-treatment (Debridement) and start of therapy within 48 hours after reopening of the wound, diagnosis for nonclosable wound or in case of spontaneous wound dehiscence

Exclusion Criteria:

* Age \< 18
* Noncompliance with study procedures, visit schedule and follow up
* Pregnancy
* Present or nonclosable defect of the abdominal fascia
* Any pre-existing or ongoing organ system failure, that cannot be stabilized or solved by appropriate medical treatment
* Necrotic tissue with eschar present
* Non-enteric and unexplored fistulas
* Malignancy of the wound
* Use of any other device based on the principle of negative pressure wound therapy on the study wound within ≤ 8 days prior to screening
* Competing therapies or procedures
* Simultaneous participation in other clinical trials
D: Inclusion Criteria:

* Patients presenting for elective or semi-elective isolated first-time CABG surgery with harvesting of the greater saphenous vein.
* Must be 18 years or older.
* Must live with one hour driving distance from Calgary.
* Must provide written consent.

Exclusion Criteria:

* Previous CABG surgery or previous lower leg surgical intervention.
* In emergent need for surgery.
* Have severe peripheral vascular disease.
* Do not speak and read the English language.
* Have dialysis-dependent renal failure.
* Require chronic steroids.
* Unable to return to clinic for follow-up due to functional or cognitive impairment.

Answer: B