Please select the eligibility criteria that correspond to the clinical trial below.
Title: Negative Pressure Dressing to Decrease the Incidence of Leg Wound Complications After CABG
Brief Summary: This study will test the effectiveness of negative pressure wound therapy (using the VAC Prevena device, KCI Canada Inc.) applied to the saphenous vein harvest site after Coronary Artery Bypass Grafting (CABG). When initiated immediately after surgery, this intervention may decrease the incidence of wound infection and non-infectious wound complications. It may decrease wound discomfort and improve mobility and functional recovery of the leg.


Options:
A: Key inclusion criteria BMI greater than or equal to 30 kg/m2 at less than or equal to 22 weeks of gestation Subject is laboring Subject is having an unplanned cesarean section Subject will have Pfannenstiel Skin Incision Subject has the ability to take a picture and email it to a secure account Subject receives prenatal care in the University of Pennsylvania health system and plans to follow up postpartum in the system Subject is greater than or equal to 18 years of age

Key exclusion criteria Subject cannot read or speak English Subject is not 18 years of age Subject does not have ability to send a picture by email Subject has preexisting diabetes mellitus (Type 1 or Type 2) , is using chronic steroids or immune-suppressants, OR being actively treated for a malignancy Subject is undergoing a scheduled cesarean section Subject is allergic to silver
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:

* 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.
D: 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.

Answer: C