| PAR | participating provider; passive avoidance reaction; perennial allergic rhinitis; photosynthetically ... |
|---|---|
| PAS | para aminosalicylate; Parent Attitude Scale; patient administration system; patient appointments and... |
| PAV | percutaneous aortic valvuloplasty; poikiloderma atrophicans vasculare; posterior arch vein; proporti... |
| PBW | posterior bite wing |
| PCD | pacer-cardioverter-defibrillator; papillary collecting duct; paraneoplastic cerebellar degeneration;... |
| scimitar sign | <clinical sign> A curvilinear structure seen roentgenographically in the lung and associated with anomalous pulmonary venous drainage, suggesting the sickle shape, of a Turkish saber; also used to refer to the scalloped shape of the sacrum in spinal dysraphism with anterior meningocele. (05 Mar 2000) |
|---|---|
| pseudo-Graefe sign | <clinical sign> A lid retraction phenomenon similar to Graefe's sign, but due to aberrant regeneration of fibres of the oculomotor nerve into the levator of the upper lid. (05 Mar 2000) |
| Higoumenakia sign | <clinical sign> Sternoclavicular swelling in late congenital syphilis. (05 Mar 2000) |
| Hill's sign | <clinical sign> In aortic insufficiency, greater systolic blood pressure in the legs than in the arms; normal arterial systolic pressure in the leg is 10 to 20 mm of Hg above that in the arm, whereas in aortic insufficiency the difference may be 60 to 100 mm of Hg. Synonym: Hill's phenomenon. (05 Mar 2000) |
| Hoagland's sign | <clinical sign> Eyelid oedema in infectious mononucleosis. (05 Mar 2000) |
| Hoffmann's sign | <clinical sign> In latent tetany mild mechanical stimulation of the trigeminal nerve causes severe pain, flexion of the terminal phalanx of the thumb and of the second and third phalanges of one or more of the fingers when the volar surface of the terminal phalanx of the fingers is flicked. Synonym: digital reflex, Hoffmann's reflex, snapping reflex. (05 Mar 2000) |
| puddle sign | <clinical sign> A sign of free abdominal fluid: the patient assumes a position on all fours; one flank is percussed by repeated light flicking of constant intensity while a Bowles-type stethoscope is placed over the most dependent portion of the abdomen and gradually moved toward the flank opposite the percussion; a sharp increase in the intensity of the sound picked up by the stethoscope indicates the level of fluid. (05 Mar 2000) |
| Seeligmuller's sign | <clinical sign> Contraction of the pupil on the affected side in facial neuralgia. (05 Mar 2000) |
| Homans' sign | <clinical sign> Slight pain at the back of the knee or calf when the ankle is slowly and gently dorsiflexed (with the knee bent), indicative of incipient or established thrombosis in the veins of the leg. (05 Mar 2000) |
| Seidel's sign | <clinical sign> A sickle-shaped scotoma appearing as an upward or downward extension of the blind spot. (05 Mar 2000) |
| Hoover's sign | <clinical sign> The patient is asked to lie supine on a couch, and when asked to raise one leg, they involuntarily make counter pressure with the heel of the other leg. If this leg is paralysed, whatever muscular power is preserved in it will be exerted in this way, or if the patient attempts to lift a paralysed leg, counter pressure will be made with the other heel, whether any movement occurs in the paralysed limb or not. This sign is not present in hysteria or malingering, a modification in the movement of the costal margins during respiration, caused by a flattening of the diaphragm, suggestive of empyema or other intrathoracic condition causing a change in the contour of the diaphragm. (05 Mar 2000) |
| sentinel loop sign | In gastrointestinal radiology, dilatation of a segment of large or small intestine, indicative of localised ileus from nearby inflammation. (05 Mar 2000) |
| Hueter's sign | <clinical sign> In a case of fracture, the vibration expected on tapping the bone is not transmitted when tissue intervenes between the fractured parts of bone. (05 Mar 2000) |
| pyramid sign | <clinical sign> Any of the symptoms indicating a morbid condition of the pyramidal tracts, such as the Babinski or Gordon sign, spastic spinal paralysis, foot clonus, etc. (05 Mar 2000) |
| setting sun sign | <clinical sign> Retraction of the upper lid without upgaze so that the iris seems to "set" below the lower lid; suggestive of neurologic damage in the newborn, but usually clears up without sequelae. See: Collier's sign, Epstein's sign. (05 Mar 2000) |