Whereas in the previous version of the model pressure was applied evenly across the entire field, in this version, it was applied maximally (value determined by the parameter, pressure- intensity) to a circular area in the center of the field and decreasing radially outward. First, the area of tissue simulated in the field was extended. Rational improvements were based on domain knowledge and data from the literature.
PUABM components or generated phenomena unless clearly stated otherwise.Ī simpler model of pressure ulcer formation [2. Hereafter, when we use words or phrases that usually specify biological reality, such as “pressure,” “neutrophil,” “TNF- α,” “inflammatory mediators,” “cell,” “oxygen,” “ischemic,” etc.
The PUABM was built using an iterative approach (Fig 1.
Pressure ulcer site, severity (stage 1–4, unstageable, or deep tissue injury), general appearance, size and shape were also recorded. X optical zoom lens with flash enabled, at a distance of 1. Photos were obtained using a Canon Power Shot SD 7. Pressure ulcers were initially photographed when identified, and serial photographs were taken three times per week while patients remained in the acute care and/or weekly while in the inpatient rehabilitation hospital to monitor progression and/or healing, and during their outpatient visits or 6 month intervals after discharge. SCI or other neurological diseases affecting motor and sensory function. Subjects were excluded if they had a history of pre- existing diseases that affect the inflammatory response to SCI (e. Subjects were recruited from a single tertiary care center if they were 1. Photographic data were obtained from pressure ulcers sustained by patients enrolled in the Rehabilitation Engineering Research Center on Spinal Cord Injury at the University of Pittsburgh. A Computational, Tissue- Realistic Model of Pressure Ulcer Formation in Individuals with Spinal Cord Injury.
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