An IgE-mediated immediate hypersensitivity reaction, characterized by contact urticaria (hives), angioedema, rhinitis, respiratory complications, drop in blood pressure and rapid heart rate that may potentially progress to anaphylaxis. Severe cases may be fatal. Examples include Type I allergies to the proteins in peanuts, penicillin, shell fish, natural rubber latex, etc. Symptoms appear within minutes to an hour.

Providing a nutrient solution via a tube into the stomach or intestines; enteral nutrition.

A cell-mediated, delayed hypersensitivity reaction, characterized by dermatitis, eczema, erythema, vesiculation (blisters), keratosis, hyperplasty (thickening of skin) and cracking. The area affected usually increases with repeated exposure. Examples include Type IV allergies to the chemicals in nickel, blue eye shadow, poison oak, accelerators in gloves, etc. Symptoms fully express in 24-72 hours.

A nodule, especially in an anatomic, not pathologic, sense; a small knobby prominence or excrescence; any of several prominences (as the acoustic tubercle) in the central nervous system that mark the nuclei of various nerves.

An EPA-classified hospital disinfectant that also kills Mycobacterium tuberculosis (tubercle bacilli). EPA has registered approximately 200 tuberculocides. Such agents also are called Mycobactericides.

Because mycobacteria, such as Mycobacterium tuberculosis, are more resistant to chemical disinfectants than are other vegetative bacteria, additional tests must be performed for a disinfectant to claim to be effective against the tuberculosis bacterium.

A respiratory illness caused by the bacterium Mycobacterium tuberculosis. It is a disease considered to be transmitted by the airborne route and therefore a respirator (N95 or higher) is recommended for HCW attending TB patients.

Commonly performed for long term catheters where a portion of the central venous catheter (CVC) is placed beneath the skin, theoretically to decrease infection and secure the catheter reducing pistoning (movement back and forth that can draw in bacteria from the skin).

Tissue that has been subjected to traumatic injury such as physical or chemical damage, caused by instrumentation, pressure, bruising, insufficient blood or oxygen, cytotoxic drugs, desiccation, etc.

Tenderness, erythema, or site induration >2 cm from the catheter site along the subcutaneous tract of a tunneled catheter (e.g. Hickman or Broviac), in the absence of concomitant BSI.