| BI | background interval; bacterial or bactericidal index; base-in [prism]; basilar impression; Billroth ... |
|---|---|
| CI | cardiac index; cardiac insufficiency; cell immunity; cell inhibition; cephalic index; cerebral infar... |
| DFI | disease-free interval |
| FI | fasciculus intrafascicularis; fever caused by infection; fibrinogen; fixed interval; flame ionizatio... |
| IDI | immunologically detectable insulin; induction-delivery interval; inter-dentale inferius |
| interval scale | Like a temperature scale in centigrade or Fahrenheit units, a scale on which the intervals are equal but which has an arbitrary zero point; e.g., intelligence quotient values are values along an interval scale. (05 Mar 2000) |
|---|---|
| isovolumic interval | Time during which both an A-V and a semilunar valve are closed. (05 Mar 2000) |
| escape interval | The time between the last beat of the patient's basic rhythm (ectopic or sinus beat) and a beat from a spontaneous escape focus or the initial electronic pacemaker impulse (a preset interval in the circuitry); it may be either a shorter or a longer time period than the pulse interval. (05 Mar 2000) |
| focal interval | The distance between the anterior and posterior focal points of the eye. (05 Mar 2000) |
| lucid interval | In psychoses or delirium, a rational period appearing in the course of the mental disorder. (05 Mar 2000) |