Dressing of the Axilla Using a Water-Filled Surgical Glove After Axilla Grafting
Usually, after grafting of the axilla, it is difficult to obtain a reliable dressing using traditional materials including tulls and fluffy gauzes. As an alternative to this traditional approach, a sterile surgical glove filled with saline can be used to obtain a bulky dressing.
Classification and surgical correction of postburn axillary contractures.
Postburn axillary contractures should be surgically corrected as soon as the diagnosis has been established in order to avoid deeper tissue involvement. We have classified axillary contractures based upon local anatomic conditions and present procedures for correction of each type that we find most suitable. Type I contractures are characterized by a linear web at either axillary fold with minimal adjacent scarring. A double Z-plasty with Y-V advancement is the procedure of choice. Type II contractures involve either axillary fold, with adjacent skin scarring. A double incisional release on both sides of the hair-bearing area is the procedure of choice. Type III contractures are characterized by linear webs at both axillary folds without involvement of the adjacent skin. The procedure of choice in these cases is a double incisional release. Type IV axillary contractures involve the hair-bearing area and the periaxillary region. This diffuse scar contracture is best treated by a single incisional release.
Applications of nanocomposite hydrogels for biomedical engineering and environmental protection
Nanocomposite hydrogels are polymeric networks that possess a unique property of hydration. The presence of alcohols, carboxylic acids and amides as hydrophilic moieties in structure of nanocomposite hydrogels enhances their stiffness and water-absorbing capacity. Addition of cross-linker in the synthesis of hydrogels increases their stability under extreme conditions of temperature, pH and pressure. Natural polymer-based nanocomposite hydrogels are biodegradable, highly hydrophilic and possess good mechanical strength. Gelatin, chitin, cellulose, pectin, carrageenan, starch and alginate are natural polymers commonly used to fabricate nanocomposite hydrogels. Nanocomposite hydrogels have special characteristics such as high swelling rate, selectivity and stimuli-sensitive nature. Here we review nanocomposite hydrogels for environmental protection and biomedical engineering. Applications in biomedical engineering include drug delivery agents, wound dressing, tissue engineering and antibacterials. Applications in environmental protection include ion exchangers, adsorption, photocatalysis and soil conditioning. Many nanocomposite hydrogels show excellent adsorption selectivity for heavy metal ions: Cu2+ up to 30.35 mg/g, Pb2+ up to 35.94 mg/g, and Zn2+ and Fe3+ up to 94.34 mg/g. Xanthan gum-based nanocomposite hydrogel has removed 96% dye from industrial effluent as reported. In addition, most of the nanocomposite hydrogels showed better adsorption capacity for pollutants in the pH range from 5 to 7. The nanocomposite hydrogels could also be regenerated and successfully utilized for several times. Nanocomposite hydrogels are therefore good bio-absorbent materials for environmental detoxification.