Wound Treatment Associate (WTA) Practice Exam

Smoking has a profound negative impact on wound healing primarily because it constricts blood vessels and reduces oxygenation. Nicotine, one of the primary components of cigarettes, causes vasoconstriction, which narrows blood vessels and reduces blood flow to the tissues. This decreased blood flow means that essential nutrients and oxygen are less available to the wound area, both of which are critical for effective healing.

Additionally, reduced oxygenation compromises the body's ability to fight off infections and slows down the overall healing process. The healing of wounds relies heavily on adequate blood supply to supply the right cells, nutrients, and oxygen necessary for tissue repair and regeneration. Therefore, individuals who smoke often experience prolonged healing times and an increased risk of complications after injury or surgery. This physiological understanding aligns with empirical evidence showing that smoking is detrimental to various stages of wound healing.