April 2014

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Original Research »

Teledermatology May Play a Role in Reducing Severity of Pressure Ulcers in Both Rural and Urban Settings

Wed, 4/9/14 - 2:11pm | 1 Comments | 2082 reads

Index: WOUNDS. 2014;26(4):89-94.

Key words: pressure ulcers, telemedicine, wound care, teledermatology, bedridden patients

  Abstract: Introduction. Teledermatology is already thought to be a valuable tool for patients in rural areas due to their lack of easy access to specialty care providers. This study explored the benefit of teledermatology for bedridden patients living in both rural and urban areas. Methods. The following 4 studies were evaluated: 1) evaluation of conditions of 83 patients who had developed pressure ulcers before being admitted to the hospital; 2) evaluation of the circumstances of 53 patients with pressure ulcers who received home care; 3) survey of 321 home care nurses regarding their concerns about wound care; and 4) results of a teledermatology system aiming at early intervention for chronic wound treatment.


 

Original Research »

Delaying the Onset of Resistance Formation: Effect of Manipulating Dose, Wavelength, and Rate of Energy Delivery of 405-, 464-,and 850-Nanometer Light for Staphylococcus aureus

Wed, 4/9/14 - 2:15pm | 0 Comments | 1097 reads

Index: WOUNDS. 2014;26(4):95-100.

Key words: blue light, Staphylococcus aureus, resistance formation

  Abstract: Objective. To determine whether manipulation of dose, wavelength, and rate of energy delivery could delay the onset of previously demonstrated Staphylococcus aureus resistance to blue light. Materials and Methods. The organism was treated in vitro with 405 nm, 464 nm, and combined 464 nm and with 850 nm light emitted from a supraluminous diode (SLD) array. Doses of 9 J/cm2 and 30 J/cm2 were used. Rates of energy delivery were also varied from 10 mW/cm2 to 125 mW/cm2. Seven stages were employed to test for resistance formation. Colony counts were performed and compared to untreated controls using Student t tests and one-way ANOVA with Tukey post hoc analysis. Results. A best dose, wavelength, and rate of delivery combination was determined at each stage and it did produce a significant kill rate (P ≤ 0.05) at each stage. Analysis of variance demonstrated that no loss of effectiveness (formation of resistance) occurred over the 7 stages. Conclusions. Appropriate combinations of dose, wavelength, and rate of energy delivery can delay resistance formation to light as a bactericidal agent for S. aureus.


 

Original Research »

Cellular Characterization of Wound Exudate as a Predictor of Wound Healing Phases

Wed, 4/9/14 - 2:20pm | 0 Comments | 1471 reads

Index: WOUNDS. 2014;26(4):101-107.

Key words: wound exudate, inflammatory phase, proliferative phase, neutrophils, platelets

  Abstract: This study was designed to characterize the cell populations present in wound exudate, to examine the validity of these populations in identifying the wound phase to find possible predictors of healing, and to anticipate events in favor of a more rapid recovery. Materials and Methods. Fourteen patients who presented with postsurgical wounds with negative pressure therapy were included in the study. The authors collected samples from 51 wounds in the inflammatory phase and 29 in the proliferative phase.


 
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