| FRS | Fellow of the Royal Society; ferredoxin-reducing substance; first rank symptom; furosemide |
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| HSCL | Hopkins Symptom Check List |
| PS | pacemaker syndrome; paired stimulation; paradoxical sleep; paraspinal; parasympathetic; Parkinson sy... |
| PSQ | Parent Symptom Questionnaire; Patient Satisfaction Questionnaire |
| SCL | scleroderma; serum copper level; sinus cycle length; soft contact lens; stromal cell line; subcostal... |
| Kussmaul's symptom | <clinical sign> In constrictive pericarditis, a paradoxical increase in venous distention and pressure during inspiration; seen occasionally in effusive-constrictive pericarditis when tamponading pericardial fluid overlies a constricting epicarditis. Synonym: Kussmaul's symptom. (05 Mar 2000) |
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| Fischer's symptom | <clinical sign> An obsolete sign: in tuberculosis of the mediastinal or peri-bronchial glands, after bending the patient's head as far back as possible, auscultation over the manubrium sterni will sometimes reveal a continuous loud murmur caused by the pressure of the enlarged glands on the large mediastinal vessels. Synonym: Fischer's symptom. (05 Mar 2000) |
| Frenkel's symptom | Lowered muscular tonus in tabetic neurosyphilis. (05 Mar 2000) |
| localizing symptom | A symptom indicating clearly the seat of the morbid process. (05 Mar 2000) |
| local symptom | A symptom of limited extent, caused by disease of a particular organ or part. (05 Mar 2000) |