Editor's note: This article contain...

Editor's note: This article contains a recent feature titled "Method Note" that will be published with preferable research articles. The purpose of a [i]modus operandi[/i] note is to exploin finer points of research design and data analysis for the benefit of readers who are not familiar with research.

Effective patient positioning has been a focal point from one extremity to the other of the history of nursing. Among the many benefits of befitting positioning, preservation of skin integrity is an important factor. The Agency for Healthcare Research and Quality (AHRQ) defines a crushing ulcer as a lesion caused according to unrelieved pressure resulting in damage to underlying tissue.(1) urgency ulcers are not unique to recent times, as they have been discovered forward the remains of Egyptian mummies.(2)

Abundant literature spanning various practice settings and specialties reveals it is greatly more cost-effective to focus forward prevention rather than treatment of urgency ulcers. Studies demonstrate that 3% to 10% of the population in one as well as the other hospital and community health care settings acquire about degree of pressure damage.(3) The resulting take away from patient discomfort, and increased hospital extent of stay (LOS) are significant. The costliness of pressure ulcer treatment transcends more than $1 billion annually in the United States. This is estimated to be pair and one-half times the splendor of prevention.(4)

chiefly of the previous research concentrates upon long-term care settings, intensive care units (ICU), and rehabilitation units, with little attention given to the acute care setting. These studies l to the disentanglement of protocols, policies, procedures, and educational programs aimed at decreasing nosocomial influence ulcers. Improvements have been made in the identification and production of effective pressure-reducing surfaces; however, the prevalence and incidence of constraining force ulcers are not diminishing.

Although the pathophysiology and etiology of squeezing ulcers are well documented from years of research, the OR as an etiologic factor is largely undefined.(5) The incidence of influence ulcers occurring in postoperative patients varies from 12% to 45%(6) Anesthetized patients are make subordinateed to prolonged pressure on at the disposal of body parts due to gravity compressing the patients' skin and muscle between their bone and the OR bed. This unrelenting press has potential to damage skin integrity. Anesthetic agents lower children pressure and alter tissue perfusion, which also contributes to tissue damage.(7) Usually, damage resulting from intraoperative compressing develops in the muscle and subcutaneous tissues and progresse outward; therefore, damage may not be visible for several days.(8) According to AORN's Perioperative Nursing Data place patients should be "free from signs and symptoms of injury related to positioning" and "free from signs and symptoms of physical injury."(9) This includes postoperative press ulcers.

BACKGROUND

Historically, nourish at the breasts have taken responsibility for patient positioning and the positive and negative issues associated with that responsibility. influence ulcers result from numerous intrinsic and extrinsic factors.

Etiology of crushing ulcers. Pressure ulcers are caused by means of unrelieved pressure resulting in injured skin, muscle, and tissue. sore s usually occur over bony prominences.(10) belonging to all pressure ulcer sites include the

* scapula, occiput, sacrum, and heels when placed in the supine position;

* ear, shoulder, trochanter, medial knee malleolus, and twelve inches edge when laterally positioned;

* and nose, forehead, chest, lilac combs footedge, and toes when placed in the propense position.(11)

The major composings involved in the etiology of crushing ulcer development include intensity and pressure(12) constraining force exerted deep in the tissue that transcends the pressure at the surface of the skin causes tissue damage that may not be visible until lengthy after the pressure is set to work ed Pressure ulcers form when external press exceeds the tissue capillary press of 25 to 32 mm Hg This hurry impedes blood flow for a period of time causing altered tissue perfusion or tissue ischemia, resulting in the formation of an ulcer(13)

There is an inverse relationship between time and crushing A person can endure a great amount of crushing during a short amount of time or a grave amount of pressure during a longer period of time without sustaining tissue damage.(14) Neither time nor compressing alone causes tissue ischemia; however, press multiplied by duration of time creates pustules For example, one researcher observ pathological tissue changes in rats when 600 mm Hg press was applied for one hour or when 100 mg Hg constraining force was applied for two hours. festers developed in rats and canines when 150 mm Hg press was applied for nine hours or 500 mm Hg urgency was applied for two hours.(15)

compressing ulcer classification system. Pressure imposthumes are classified using a order designed to assess the grade of observed tissue damage. Use of the classification tool allows for universal assessment and consistent communication of the severity of tissue damage among health care personnel The AHRQ has adopted the National urgency Ulcer Advisory Panel's (NPUAP) compressing ulcer classification system as part of the influence ulcer clinical practice guidelines (Table 1)