A Comparison of Post-Sternotomy Dressings

The primary outcome measure in this study was wound healing, defined as the degree of wound approximation, skin integrity, exudate, and presence/absence of necrotic tissue, assessed at postoperative day 5 or day of discharge. Wound approximation was assessed as total, partial (less than 2 centimeters of superficial separation), moderate (greater than 2 centimeters of superficial separation), or dehisced (complete separation of layers). Skin integrity was evaluated as normal (pink, no redness), inflamed, (heat, redness, swelling), or macerated within a 2.5 centimeter border of the incision. Exudate quality was assessed as purulent, blood, serosanguinous, or serous. Presence or absence of necrotic tissue was noted.

The secondary outcome measure in this study was patient comfort with the dressing in place and upon removal. Comfort was measured using a 0-10 scale, with 0 signifying no pain and 10 signifying maximum pain.

Dressing factors of ease of application, removal, and incision assessment were measured on a 5-point Likert-type scale (1=very easy, 2=moderately easy, 3=neither easy nor hard, 4=moderately hard, and 5=very hard). Dressing integrity was assessed as suture line exposed, poorly sealed (imperfect covering of the suture line with the potential for organism entry), or well-sealed.

Investigators evaluated sternal wound infection presence and type (superficial or deep) using Centers for Disease Control/National Healthcare Safety Network surveillance definitions.