The dermis contains two types of fibers: elastin, which gives skin its elasticity, and collagen, which provides strength; it is the second layer of the skin located underneath the epidermis. The dermis also contains blood and lymph vessels, hair follicles, sweat glands, and the sebaceous glands, which produce oil.
Letter: d
A general term describing loss of or insufficient amount of oxygen combined with the arterial hemoglobin.
A cleansing substance which loosens debris and holds it in suspension so it can be easily rinsed away.
The total number of days that a specific type of device is used in a population within a specific time frame. Device days are used as a denominator in surveillance. (numerator/denominator)
The capitated rate allowed by insurance carriers according to patient diagnosis.
Diagnosis-related group specifically identified for reimbursement. There are approximately 500 groups each roughly categorized to procedures having similar hospital resource requirements; developed for Medicare payment system.
The dome-shaped skeletal muscle separating the abdomen from the thoracic cavity. It contracts with each inspiration, flattening out downward permitting the bases of the lungs to descend. It relaxes with each expiration, elevating itself and restoring the inverted basin shape.
The production of heat in body tissues for therapeutic purposes by non-damaging high-frequency currents.
Disseminated Intravascular Coagulation
Determines the air exchange differential of porous materials (Reference ASTM F2100, ISO 16603, ISO 16604, Military spec MIL36954C, ASTM F2101). This technique employs a water manometer differential upstream and downstream of the test material at a constant flow rate. For masks and respirators, the higher the delta P, the more difficult it is to breath through. Lower is better IF the BFE and fluid resistance is not compromised.