| protective spectacles | Spectacles which protect against ultraviolet or infrared rays or against mechanical injuries. Synonym: safety spectacles. (05 Mar 2000) |
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| protective zone | The time in the cardiac cycle, immediately following the vulnerable period, during which a second stimulus will prevent the initiation of ventricular fibrillation by a previous stimulus applied during the vulnerable period, probably by blocking a reentrant pathway. (05 Mar 2000) |
| ear protective devices | Personal devices for protection of the ears from loud or high intensity noise, water, or cold. These include earmuffs and earplugs. (12 Dec 1998) |
| eye protective devices | Personal devices for protection of the eyes from impact, flying objects, glare, liquids, or injurious radiation. (12 Dec 1998) |
| reagent kits, diagnostic | Commercially prepared reagent sets, with accessory devices, containing all of the major components and literature necessary to perform one or more designated diagnostic tests or procedures. They may be for laboratory or personal use. (12 Dec 1998) |
| pneumomediastinum, diagnostic | Deliberate introduction of air or gas into the mediastinum as an aid to examination and diagnosis. (12 Dec 1998) |
| diagnostic | Refers to something that is used to determine the cause of an illness or disorder. (09 Oct 1997) |
| diagnostic anaesthesia | Anaesthesia induced for evaluation of the mechanism responsible for a painful condition. (05 Mar 2000) |
| Diagnostic and Statistical Manual | An American Psychiatric Association publication which classifies mental illnesses.Currently in its fourth edition (DSM-IV) and first published in 1952, the manual provides health practitioners with a comprehensive system for diagnosing mental illnesses based on specific ideational and behavioural symptoms. The DSM approach supplants older, less rigorous methods of diagnosis, and as such represents a major step forward for the field of psychiatry. It consists of five axes covering clinical syndromes, developmental and personality disorders, physical disorders, severity of psychosocial stressors, and global assessment of functioning. It is used primarily in the U.S.; elsewhere, the World Health Organization's International Classification of Diseases is preferred. (05 Mar 2000) |
| diagnostic audiometry | Measurement of hearing threshold levels to determine the nature and degree of hearing loss (e.g., conductive, sensorineural, or mixed). (05 Mar 2000) |
| diagnostic cast | A positive replica of the form of the teeth and tissues made from an impression. (05 Mar 2000) |
| diagnostic diphtheria toxin | Corynebacterium diphtheriae toxin diluted so that the inoculated dose (0.1 or 0.2 ml) will contain 1/50 th of guinea pig minimal lethal dose. See: Schick test. Synonym: diagnostic diphtheria toxin. (05 Mar 2000) |
| diagnostic equipment | Nonexpendable items used in examinination. (12 Dec 1998) |
| diagnostic errors | Incorrect diagnoses after clinical examination or technical diagnostic procedures. (12 Dec 1998) |
| diagnostic imaging | Any visual display of structural or functional patterns of organs or tissues for diagnostic evaluation. It includes measuring physiologic and metabolic responses to physical and chemical stimuli, as well as ultramicroscopy. (12 Dec 1998) |