Pain Dictionary

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Necrosis

The local death of tissue. This tissue is often black/brown in colour and leathery in texture.

Neutrophil

Commonest type of white blood cells, (leucocytes) that constitute 2/3 of all white blood cells and are specially attracted to skin, where they play an important role to destroy foreign particles e.g. microbes. These phagocytic cell are short lived and are responsible for the primary cellular response to an acute inflammatory episode.

Nosocomial infection

Hospital acquired infection (HAI), MRSA is a common cause of HAI.

NPWT

Negative pressure wound therapy is a system that creates a hypoxic environment within the wound bed in which aerobic bacteria cannot survive. The environment forces the microcirculation to regenerate rapidly and produce large amounts of capillaries. The negative pressure also removes slough, loose necrotic material and exudate from the wound bed.

Nucleus

The major organelle of eukaryotic cells, containing the genetic material, DNA, organized into chromosomes.