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S Wind

Publications and source records attributed to S Wind.

14 recordsLinked to original sources

Field-modulated carrier transport in carbon nanotube transistors.

We have investigated the electrical transport properties of carbon nanotube field-effect transistors as a function of channel length, gate dielectric film thickness, and dielectric material. Our experiments show that the bulk properties of the semiconducting carbon nanotubes do not limit the current flow through the metal/nanotube/metal system. Instead, our results can be understood in the framework of gate and source-drain field induced modulation of the nanotube band structure at the source contact. The existence of one-dimensional Schottky barriers at the metal/nanotube interface determines the device performance and results in an unexpected scaling behavior.

Journal Article↗

What is the paradigm: hospital or home health care for pressure ulcers?

A home health care (HHC) referral should link the patient in a cost-effective fashion to the physician, home care, and instructions regarding ulcer management. Twenty-one patients (mean age, 74.6 years) had stage III pressure ulcers (<100 cm2) and an involved family member at home. Risk and contributing factors included cardiac disease (n = 9), hypertension (n = 14), end-stage renal disease (n = 7), smoking (n = 11), diabetes (n = 8), chronic brain syndrome (n = 14), cerebrovascular accident (n = 5), and above-the-knee amputation (n = 2). Treatment regimens included standard wound care, pressure relief and, where appropriate, culture-specific antibiotics, as well as a rehabilitation program. Home care progressively decreased the frequency of the nurse HHC and physician office visits. Resolution of the pressure ulcer varied from 6 to 32 weeks. Only two patients had progression of their wound and required hospital readmission. The billable fees included: 1) an office visit, $30.00 (medicare reimbursement, $14.00); 2) the HHC nurse visit, $159.00 (medicare reimbursement, $105.00); 3) supplies, $75.00 to $150.00/week (variable reimbursement); 4) hospitalization, $400.00 to $900.00/day; and 5) a chronic-care bed, $400.00 to $750.00/day. HHC, given a responsible support team and an involved family member, was more socially and financially acceptable than an inpatient facility. Intermittent physician visits with HHC proved safe and reliable, with 90 per cent successfully healing their wounds.

Aged↗

Sequential biannual prevalence studies of pressure ulcers at Allegheny-Hahnemann University Hospital.

To assess the prevalence, documentation and care of pressure ulcers, and the effect of teaching and prevention strategies in a 750-bed university hospital, one-day studies were conducted in 1993, 1995, and 1997. Data gathered was used to evaluate areas in need of improvement and find cost-effective ways to reduce the prevalence of pressure ulcers. The overall prevalence of ulcers decreased from 18 percent in 1993 to 10 percent in 1995 and 1997. The prevalence of nosocomial ulcers decreased from 14 percent in 1993 to 8 percent in 1995 and 6 percent in 1997. The number of nutritional consults increased from 54 percent in 1993 to 67 percent in 1997, and more than half of all patients tested had serum albumin levels < 3.5 mg/dL. Skin assessments upon admission were completed in the majority of patients. While ulcer documentation was less than adequate for the majority of patients in 1993 and 1997, care measures, e.g., placement of patients on specialty beds or mattresses and use of dressings that provide a moist environment, improved considerably. The results of this study indicate that system-wide educational efforts aimed at all levels of patient care providers, and multi-specialty prevention and care efforts can reduce the prevalence of pressure ulcers.

Adult↗

Pressure ulcers: collaboration in wound care. Is there a reasonable approach?

Pressure ulcers represent a significant impact on utilization of healthcare beds, cost for the insurer, and adverse emotional impact for the family. With this in mind, one must address in an effective fashion a method of objective assessment using the current methodology to deal with risk factors in mobility, disease states, and nutrition, as well as give significant attention to prevention protocols. One should adhere to a schedule of turning the patient, sleep surfaces, and appropriate skin care while recognizing the impact of each. Finally, treatment modalities should be undertaken, not only with cost-effective issues in mind, but with ease and convenience for the healthcare provider and the least discomfort for the patient as well. One can focus on debridement by way of enzymatic, autolytic, or surgical methods, recognizing surgery as the least effective for our goals in the management of this patient. Assessment and, finally, reassessment using the available scales will allow us to provide effective healthcare in a therapeutic fashion.

Beds↗

Moist wound healing.

The optimum wound environment to enhance wound healing is a balance of nutrition, hypoxia, and removal of debris in an occlusive moist environment. With increasing knowledge of the healing process and the variety of dressings available, the end result of any wound management will be an expedited wound healing with maximum patient comfort.

Alginates↗

Neuropathic wounds.

Neuropathic wounds commonly seen in the diabetic patient are particularly challenging diagnostic and management entities. An overview of this disorder along with clinical manifestations and treatment options are discussed.

Diabetic Foot↗