Wound dressings defined

The topics contained in the book fall squarely within the realm of Combat Casualty Care, one of the pillars or mission areas for Army medical research. Specifically, the book deals with Far Forward Resuscitation, prevention and management of blood loss, wound dressing, prevention of infection, and prevention of adverse tissue responses and impaired healing. These aspects of treatment are critical to prevent death, treatment complications, and disability. They are the important aspects of early interventions in the battle area or during medical evacuation. Information covering so many aspects of this type of care are not usually found in a single source. This book will compile a large amount of important information that is current and state of the art. It will help to define the Standard of Care. 

The methods related to the evaluation of the specific nonwoven applications have also been defined in various standards the typical examples of such technical products are nonwoven wound dressings and nonwoven filters. 

Wounds are defined as skin defects caused by chemical, mechanical, electrical, or thermal injuries, or by the presence of an underlying medical or physiological disorder. Wound dressings are materials used to cover the wounds. Many types of wounds occur in everyday life, such as mechanical injuries like abrasions, lacerations, acute bullet wounds, knife cuts, bites, and surgical wounds, and various types of bums caused by thermal, chemical, electrical, or radiational injuries. Other types of wounds such as chronic ulcerative wounds, pressure sores, and leg ulcers occur more commonly among elderly people. 

It was outlined in the previous section that the thermal analysis of polymers is not without problems caused by moisture. Pharmaceutically, the presence of moisture may be desirable, unavoidable or part of the functional aspects of the polymer. Thus the presence of low levels of moisture improves the compaction of HPMC by plasticisation [123], increases tablet strength by hydrogen bonding, is part of the function by which hydrophilic polymers perform in matrix tablets [123], or are used as water absorbents in wound dressings [125]. Finally, gels containing water, formed at the surface of a matrix tablet, or as gels for topical delivery contain defined quantities of water. Whichever system is examined, their use is controlled by their properties, some of which can be assessed by thermal analysis. 

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