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At least 1,315 records · Page 73Linked to original sources
PubMed2007

Negative pressure dressing for promoting wound healing of purpura fulminans in a newborn with homozygous protein C deficiency.

A negative pressure dressing to promote wound healing of purpura fulminans in a girl aged 35 days with homozygous protein C deficiency is reported. Two wounds of 11 x 11 cm2 at the abdominal wall and 14 x 14 cm2 at the left trunk were covered with sterile sponges embedded with a multiple-hole drain tube and transparent plastic film. The exposed end of the drain was then connected to the wall suction apparatus to create negative pressure at -120 mmHg. The dressing was changed every 2 days. Within 4-6 weeks, the wounds were completely healed and skin grafting was not required.

Abdominal Injuries↗
PubMed2000

Strongly driven exciton resonances in quantum wells: light-induced dressing versus coulomb scattering

The nonequilibrium dynamics of a two-dimensional electron-hole gas is studied in the regime of strong and resonant pumping of the exciton resonance. The Coulomb collision rates are consistently determined by taking into account the light-induced coherence of the two-band system that leads to a dressing of the carrier spectral functions. The light dressing dramatically reduces the Coulomb scattering efficiency. Results are presented for Rabi oscillations in the time domain and dynamical Stark splitting in the pump-probe absorption spectra.

Journal Article↗
PubMed2003

Dressed qubits.

Inherent gate errors can arise in quantum computation when the actual system Hamiltonian or Hilbert space deviates from the desired one. Two important examples we address are spin-coupled quantum dots in the presence of spin-orbit perturbations to the Heisenberg exchange interaction, and off-resonant transitions of a qubit embedded in a multilevel Hilbert space. We propose a "dressed qubit" transformation for dealing with such inherent errors. Unlike quantum error correction, the dressed qubit method does not require additional operations or encoding redundancy, is insensitive to error magnitude, and imposes no new experimental constraints.

Journal Article↗
PubMed1989

The effect of gas permeability of film dressings on wound environment and healing.

We have determined the effect of oxygen and carbon dioxide permeability of thin film dressings on wound exudate P O2, P CO2, pH, and epithelialization in shallow wounds on domestic pigs. Three kinds of films were compared: polyvinylidine chloride, a low gas permeability film; polyurethane, a medium gas permeability film; and poly(dimethyl silicone), a high gas permeability film. Exudate under the silicone film had the highest P O2 and the lowest P CO2; exudate under the polyurethane had intermediate P O2 and P CO2; and exudate under the polyvinylidine chloride had the lowest P O2 and highest P CO2. Values for pH under the films correlated inversely with P CO2. The gas tensions and pH are a reflection of the ability of the films to control the diffusion of oxygen into and the loss of carbon dioxide from the wound exudate. Mean epithelialization values at 2 and 3 d were not significantly different under polyvinylidine chloride and polyurethane, but both were higher than under the silicone film. We infer from the data that the use of oxygen and carbon dioxide impermeable film dressings do not affect epithelialization in well-perfused, shallow wounds. The use of the silicone film (highly permeable to both oxygen and carbon dioxide) led to a loss of carbon dioxide. The resulting relatively high pH may have been responsible for the reduced rate of epithelialization which occurred beneath the silicone film.

Animals↗
PubMed1993

The effect of the anaesthetist's attire on patient attitudes. The influence of dress on patient perception of the anaesthetist's prestige.

Two groups of adult patients (55 each) were visited pre-operatively by an anaesthetist who was dressed either formally or casually. Their response to this visit, their opinions regarding anaesthetists and their knowledge of anaesthetic work were elicited afterwards by means of a questionnaire. Patients' satisfaction with the anaesthetist and his/her visit was not influenced by dress. The anaesthetist was awarded a high level of prestige and the length of his/her training was recognised to be comparable to that of other professionals; 81.8% of patients thought that anaesthetists held a medical degree but only 35.4% thought that they worked in the intensive care unit. Patients expressed a preference for doctors to wear name tags, white coats and short hair but disapproved of clogs, jeans, trainers and earrings.

Adolescent↗
PubMed2006

Successful use of a thermoplastic dressing in two cases of the trigeminal trophic syndrome.

Treatment of trigeminal trophic syndrome is challenging and often unsatisfactory, particularly in patients with cognitive impairment. We report the novel use of a thermoplastic dressing in two patients with trigeminal trophic syndrome. Use of the dressing resulted in successful healing of ulceration in both patients, which has been maintained in the short term, representing a simple and economical therapeutic option in the management of this difficult condition.

Aged, 80 and over↗
PubMed1991

The antimicrobial effect of calcium hydroxide as a short-term intracanal dressing.

The antibacterial effect of calcium hydroxide as a short-term intracanal dressing was clinically evaluated by applying the medicament for 10 minutes or 7 days in root canals of teeth with periapical lesions. The results showed that the 7-day dressing efficiently eliminated bacteria which survived biomechanical instrumentation of the canal, while the 10-minute application was ineffective.

Bacteria, Anaerobic↗
PubMed1992

Human pulpectomy: incidence of postoperative pain using two different intracanal dressings.

A clinical study using vital maxillary central incisors was performed to evaluate the incidence of postoperative pain after pulpectomy and dressing with a corticosteroid-antibiotic preparation or a calcium-hydroxide paste. Sixty teeth from 45 patients were prepared and dressed on the first visit and re-evaluated 7 days later. No difference was observed in the incidence of postoperative pain between the two groups.

Adolescent↗
PubMed2005

Calcium hydroxide dressings using different preparation and application modes: density and dissolution by simulated tissue pressure.

AIM: To study the effect of different apical shapes in prepared simulated root canals on the application of a commercially prepared calcium hydroxide paste by a syringe or lentulo spiral. METHODOLOGY: Three different types of root canal preparation were performed in 90 simulated canals: group A to an apical size 20 and a 0.10 taper using hand and rotary instruments, group B to an apical size 30 and a 0.08 taper using GT rotary instruments and group C to an apical size 40 and a 0.04 taper using ProFile 0.04 instruments. The insertion of calcium hydroxide [Ca(OH)2] paste was accomplished using either a lentulo spiral or a syringe. After 1 week of simulated fluid pressure applied to the apical end of the canal using physiological saline solution, the solution was evaluated for released Ca(OH)2. The specimens were weighed initially, after preparation, after insertion of Ca(OH)2 paste, after temporization with Cavit and after 1 week of simulated fluid pressure. Digital radiographs of the filled canals were taken and canal areas in mm2, gray values of the Ca(OH)2 dressings, total area of voids in mm2, as well as location of voids in the apical, middle or coronal thirds of the root canals were measured. Analyses of variance, with Scheffe's post-hoc tests, as well as chi-square tests were performed. RESULTS: Canals in group C had significantly fewer (P < 0.01) radiographic voids than canals in groups A and B. Using a lentulo spiral resulted in significantly (P < 0.05) fewer voids compared with the injection technique. More voids were detected coronally compared with middle and apical root canal thirds (P < 0.05). CONCLUSIONS: Canal shape and method of application had an impact on the amount and radiodensity of calcium hydroxide dressings in simulated root canals. Canals prepared to an apical size 40 and a taper of 0.04 had the least number of voids; Ca(OH)2 was placed with significantly fewer voids using a lentulo spiral compared with the injection technique.

Calcium Hydroxide↗
PubMed1983

A preliminary investigation into surgical dressings used over post-operative passive abdominal wound drains.

A pilot study was carried out in a city teaching hospital in North West England. This descriptive study focused on patients from general surgical wards who post-operatively had passive abdominal wound drains in situ. The use of sterile drainable plastic bags over these wound drains was investigated. For the purpose of this study such drainage bags were included in the category of surgical dressings. Observations recorded included the type of operation undergone by the patient, length of time the wound drain was in position, frequency of wound drain dressing change and the reason for change. Relevant comments volunteered by patients and nursing staff were also recorded. Nineteen patients, male and female, from three general surgical wards were followed up post-operatively. The study, completed in 4 months, was limited to English speaking patients who were alert and willing to participate. In addition, qualified nursing staff, from the wards where the study was carried out were asked to complete and return a questionnaire related to the project. A variety of problems were found to be associated with the use of sterile drainable plastic bags over Yeates tissue drains and corrugated wound drains and areas where further research is needed are highlighted.

Abdomen↗
PubMed2005

Carbamazepine-induced acute liver failure as part of the DRESS syndrome.

Carbamazepine is a widely used drug. It is commonly associated with hepatic abnormalities, ranging from an asymptomatic rise in liver function tests to acute liver failure. The most severe reaction occurs as part of a generalised hypersensitivity reaction, also known as drug reaction, eosinophilia and systemic symptoms (DRESS). We describe a case of a young adult who presented with non-specific symptoms, which progressed to fulminant hepatic failure, displaying the hallmarks of DRESS. We highlight the need for awareness of such an association.

Adult↗
PubMed1979

Debrisan as a postoperative dressing after dermabrasion.

Beads of the material that is commercially purveyed as Debrisan were used as a postoperative dressing after dermabrasion in 24 patients. Fifteen of seventeen patients so dressed on only half of the dermabraded area expressed preference for it. The beads absorbed drainage and were protective of the dermabraded half. Five of the seventeen patients developed milia one month after dermabrasion and three of the five had them only on the side treated with the beads of Debrisan.

Bandages↗
PubMed1995

Apical leakage following root canal dressing with calcium hydroxide.

The purpose of this study was to analyse the apical leakage in teeth filled by the lateral condensation technique following medication with calcium hydroxide. One hundred and twenty extracted human teeth were biomechanically prepared by using exclusively reaming motion with files up to #40. Half of the teeth received a calcium hydroxide dressing for 3 days. The medication was removed by irrigation and reaming motion with files #40 up to #70. The teeth were divided in 6 experimental groups, according to the dimension of the utilized instrument. The root canals were filled and posteriorly the teeth were placed into a 2% methylene blue dye solution inside a flask, which was attached to a vacuum pump. Leakage was measured linearly, and the results showed significantly (p<0.01) less leakage in the experimental groups that received calcium hydroxide dressings than in the control groups. The results persisted even after the removal of 300 micrometers of dentin from the root canal dentinal walls.

Analysis of Variance↗
PubMed2005

Extending the limits of fingertip composite grafting with moist-exposed dressing.

We introduced the concept of moist wound healing to extend the limits of fingertip composite grafting. In this retrospective study, we assessed the success of fingertip composite grafting with moist-exposed ointment dressing, which has been shown to maintain adequate moisture for optimal healing by frequent ointment application without the need for a secondary overlying dressing. We reviewed the outcome of composite graft replacement of 60 amputated fingertips in 56 consecutive patients over a period of 3 years and 3 months. Forty-two fingertips had survived completely and 18 had failed. Twelve of 15 fingers among patients younger than 15 years of age and 30 of 45 fingers among those 16 years of age and older had survived completely. We believe that our use of antibiotic ointment to maintain a moist environment was an important factor in improving the survival of composite grafts.

Administration, Topical↗
PubMed1988

New method for testing the absorbency of surgical dressings.

Absorbent cellulose dressings have been tested by immersion in a standard aqueous solution of picric acid followed by standard draining, elution of the picric acid, and measurement of the absorbance of the yellow colour at 355 nm. Six samples of gauze were graded by this procedure, and two considered unsatisfactory, despite all sinking in less than 10s. Filmated gauzes and unwoven dressings required greater dilution for the absorbance readings, reflecting their different structures.

Absorption↗
PubMed2002

Use of a marker organism to model the spread of central nervous system tissue in cattle and the abattoir environment during commercial stunning and carcass dressing.

Due to concerns about a link between variant Creutzfeldt-Jakob disease in humans and similar prion protein-induced disease in cattle, i.e., bovine spongiform encephalopathy (BSE), strict controls are in place to exclude BSE-positive animals and/or specified risk materials including bovine central nervous system (CNS) tissue from the human food chain. However, current slaughter practice, using captive bolt guns, may induce disruption of brain tissues and mobilize CNS tissues into the bovine circulatory system, leading to the dispersion of CNS tissues (including prion proteins) throughout the derived carcass. This project used a marker (antibiotic-resistant) strain of Pseudomonas fluorescens to model the effects of commercial captive bolt stunning procedures on the movement of mobilized CNS material within slaughtered animals and the abattoir environment. The marker organism, introduced by injection through the bolt entry aperture or directly using a cartridge-fired captive bolt, was detected in the slaughter environment immediately after stunning and in the abattoir environment at each subsequent stage of the slaughter-dressing process. The marker organism was also detected on the hands of operatives; on slaughter equipment; and in samples of blood, organs, and musculature of inoculated animals. There were no significant differences between the results obtained by the two inoculation methods (P < 0.05). This study demonstrates that material present in, or introduced into, the CNS of cattle during commercial captive bolt stunning may become widely dispersed across the many animate and inanimate elements of the slaughter-dressing environment and within derived carcasses including meat entering the human food chain.

Abattoirs↗
PubMed1985

Dress and care of infants in health and illness.

The mothers of 199 infants (mean age 36.7 days) were interviewed to determine how the infant was dressed and wrapped, and how the mother would deal with illness. These data were related to measures of the infant's toe and underarm temperatures and demographic information about the family. The data did not support the hypothesis that infants with particular types of clothing or bedding were at risk of overheating and shows that most mothers dress their infants appropriately. Mothers' ideas about management of illness were often inappropriate particularly in lower socioeducational groups.

Adolescent↗