| SN | sclerema neonatorum; scrub nurse; sensorineural; sensory neuron; serum neutralization; sinus node; s... |
|---|---|
| CCRN | Critical Care Registered Nurse |
| CFF | critical flicker fusion [test]; critical fusion frequency; cystic fibrosis factor; Cystic Fibrosis F... |
| cff | critical flicker fusion; critical fusion frequency |
| PCA | para-chloramphetamine; parietal cell antibody; passive cutaneous anaphylaxis; patient care assistant... |
| critical period | <psychology> A specific stage in animal and human development during which certain types of behaviour normally are shaped and molded for life. (12 Dec 1998) |
|---|---|
| critical pH | The pH range, about 5.5, at which saliva ceases to be saturated with respect to calcium and phosphate, and below which tooth mineral will dissolve. (05 Mar 2000) |
| critical point | A point at which two phases become identical; thus, at a given critical temperature and critical pressure, the liquid and gaseous state of a particular substance can no longer be differentiated. (05 Mar 2000) |
| critical point drying | <procedure> A method for preparing specimens for the scanning electron microscope that avoids the problems of shrinkage caused by normal drying procedures. Water in the specimen is replaced by an intermediate fluid, for example liquid carbon dioxide, avoiding setting up a liquid/gas interface and then the second fluid is allowed to vaporise by raising the temperature above the critical point, the temperature at which the liquid state no longer occurs. (18 Nov 1997) |
| critical pressure | The minimum pressure required to liquefy a gas at the critical temperature. (05 Mar 2000) |
| critical rate | A heart rate at which aberration or incomplete block will occur; a result of shortening of cycle length so that it barely includes the refractory period. (05 Mar 2000) |
| critical temperature | The temperature of a gas above which it is no longer possible by use of any pressure, however great, to convert it into a liquid. (05 Mar 2000) |
| critical velocity | <biology> The maximum speed a device or organism can sustain over a specified distance or length of time, or the maximum velocity against which device or organism can sustain a position over a specified length of time. <marine biology> Velocity through which a fish will not swim, creating a velocity barrier. (09 Oct 1997) |
| Sudeck's critical point | Region in the colon between the supply of the sigmoid arteries and that of the superior rectal artery. (05 Mar 2000) |
| illumination, critical | <microscopy> The formation of an image of the light source in the object field. The Nelsonian method in which the light source is imaged in the plane of the specimen. A ribbon filament or arc lamp is required to give uniform illumination, the lamp must be focusable, the filament position must be adjustable in all directions. The use of an achromatic condenser is advised. Synonym: Nelson illumination. (13 Jan 1998) |
| general duty nurse | Nurse who accepts assignment to any unit of a hospital other than an intensive care unit. (05 Mar 2000) |
| registered nurse | <specialist> A trained medical professional who assists people in health care under the direction of a physician. (05 Mar 2000) |
| visiting nurse | A nurse who is responsible for a group of clients in the home setting. Visits clients on a routine basis to assist client and family with care as needed and to teach family the care needed so that the client may remain in his/her home. Synonym: visiting nurse. (05 Mar 2000) |
| certified nurse-midwife | A registered nurse with at least a masters degree in nursing and advanced education in the management of the entire maternity cycle. Achieved through an organised program of study and national testing by the American College of Nurse-Midwives. (05 Mar 2000) |
| certified registered nurse anaesthetist | A registered professional nurse with additional education in the administration of anaesthetics. Certification achieved through a program of study recognised by the American Association of Nurse Anaesthetists. (05 Mar 2000) |