ISSN:1076-2191    

出版商:OVID    

年代:1996

数据来源: OVID

ISSN:1076-2191    

出版商:OVID    

年代:1996

数据来源: OVID

ISSN:1076-2191    

出版商:OVID    

年代:1996

数据来源: OVID

ISSN:1076-2191    

出版商:OVID    

年代:1996

数据来源: OVID

ISSN:1076-2191    

出版商:OVID    

年代:1996

数据来源: OVID

摘要:

AbstractWith the advent of managed care, wound care professionals have limited time to heal chronic wounds. They need to know whether the repair process is progressing or stagnating in response to treatments. Phosphorus‐31 (31P) nuclear magnetic resonance (NMR) spectroscopic measurements of chronic wound biochemistry yields rapid knowledge of whether a wound is generating, storing, or using energy.We used31P NMR analysis on biopsy samples to explore the energy status of two chronic non‐healing leg ulcers before and after the first week of treatment with two low‐pH hydrocolloid materials. Energy generation (i.e., energy “charge”) was initially low in both wounds and was significantly elevated after 1 week of treatment.Earlier work has shown that leg ulcer pathophysiology is altered during the first week of hydrocolloid treatment. This work traces the origins of such effects deeper into the cellular biochemistry and correlates the measures with the final healing outcome.31P NMR spectroscopy may provide a real‐time biochemical “fingerprint” that shows clinicians the healing status of a questionable wound. Further study is needed to confirm the reliability and validity of31P NMR spectroscopy as a predictor of healing outcomes in other wound environments.[ADV WOUND CARE 1996;9(3):21‐26]

ISSN:1076-2191    

出版商:OVID    

年代:1996

数据来源: OVID

摘要:

AbstractThis study compared tissue interface pressures (TIPs) on the occiput of 25 volunteer patients undergoing coronary artery bypass graft (CABG) surgery. Pressures were measured using the Gaymar pressure gauge and electropneumatic sensor before and after induction of anesthesia, after the patient was placed on the cardiopulmonary bypass pump, every 30 minutes throughout the procedure, immediately after the patient came off the pump, and before the incision was closed.Significant differences were found over time on mean TIPs and mean arterial pressures (MAPs). Pre‐induction mean TIP was significantly higher than TIPs recorded on‐pump, post‐pump, and prior to closure. The highest average MAPs were at pre‐induction; these were significantly higher than MAPs recorded at all other times.The TIPs recorded during surgery were high enough to put the patient at risk for circulation impairment and pressure ulcer development. Therefore, we recommend repositioning patients' heads regularly during surgery and assessing skin postoperatively for alopecia and pressure ulcers.[ADV WOUND CARE 1996;9(3):28‐32]

ISSN:1076-2191    

出版商:OVID    

年代:1996

数据来源: OVID

摘要:

AbstractAlthough proper positioning is an important measure in pressure ulcer prevention, few objective measurements have been reported of the effects of different positions on oxygen supply to the skin area in direct contact with the mattress. This study compared the effects of 30° and 90° laterally inclined positions on the cutaneous oxygen supply to the skin through the measurement of transcutaneous oxygen pressure (TCPo2) and transcutaneous carbon dioxide pressure (TCPco2) on the trochanteric (T) and the retro‐trochanteric (R) areas in 20 healthy volunteers.Resting values were TCPo2(T) 69.4 mm Hg (SD = 10.04), TCPco2(T) 36.3 mm Hg (SD = 5.1), and TCPo2(R) 69.9 mm Hg (SD = 9.2). In the 90° laterally inclined position, the TCPo2(R) value (68.2 mm Hg [SD = 9.9]) did not differ significantly from the resting value.These results show a dramatic impairment of oxygen supply to the skin in the 90° laterally inclined position but not in the 30° laterally inclined position. Additional studies of patients immobilized for long periods are needed to confirm the best positioning to prevent pressure ulcers.[ADV WOUND CARE 1996;9(3):35‐38]

ISSN:1076-2191    

出版商:OVID    

年代:1996

数据来源: OVID

摘要:

AbstractHealthy individuals with quadriplegia generally have a reduced metabolic rate. However, individuals with quadriplegia who develop pressure ulcers may have an elevated metabolic rate. In this study, energy expenditure in 16 individuals with quadriplegia and pressure ulcers (PU‐QUAD) was compared to the energy expenditure in 16 individuals with quadriplegia but no pressure ulcers (NPU‐QUAD) and 16 healthy non‐spinal cord injured subjects (controls). Resting energy expenditure (REE) was measured by indirect calorimetry. Both measured REE (t(30) = 2.38, p = .024) and percent predicted REE (t(30) = 3.23, p = .003) were significantly higher in subjects with quadriplegia and pressure ulcers compared with subjects with quadriplegia but no pressure ulcers. On average, REE in the PU‐QUAD subjects was nearly equal to the absolute energy expenditure of healthy non‐spinal cord injured controls. To ensure optimal care of patients with quadriplegia and pressure ulcers, quantification of energy expenditure with provision of adequate caloric intake is recommended.[ADV WOUND CARE 1996:9(3): 41‐45]

ISSN:1076-2191    

出版商:OVID    

年代:1996

数据来源: OVID

ISSN:1076-2191    

出版商:OVID    

年代:1996

数据来源: OVID