PRIAPISM

sea. blood-p., the tension in the walls of the blood-ve els derived from the blood-current. b: -p., the capillary venous pre ure in the brain. Donders’ p., increase of manometric pre ure with the instrument placed on the trachea on opening the chest of a dead body: due to collapse of the lung. p.-effect, the sum of the changes in any ti ue due to abnormal pre ure. endocardial p., pre ure of blood within the heart. intra-abdominal p., the pre ure of the viscera within the abdomen. tracranial p., the pre ure in the space between the skull and the brain, #.¢., the pre ure in the subarachnoidal fluid. intra-ocu: p., the pre ure or tension of the contents of the eyeball. intra pulmonic p., the air pre ure within the lungs. intrathoracic: P., the pre ure within the thorax, that is, the pre ure in the pleural cavity and mediastinal spaces. intraventric: p., the pre ure within the ventricles of the heart. osmotic. the pre ure which brings about diffusion tween solutions of different concentration or between a solute and the fluid in which it is di olved. p.-palsy, palsy due to a continuous pre ure upon a nerve. p.-sense, that sense by which is perceived and estimated the amount of pre ure exerted on a part of the body. solution-p., the force which tends to bring into solution the molecules of a solid contained in the solvent. presternum (pre-ster’ynum). Same as manubrium. pre suppurative (pre-sup’u-ra-tiv). Occurring fore suppuration. presylvian (pre-sil’ve-an). Pertaining to the anterior or ascending branch of the sylvian fi ure. pre systole (pre-sis’to-le). The interval of time pinay preceding the systole. progystolic (pre-sis-tol’ik) [L. pra before + sys- Pertaining to the beginning of the systole, 2. Occurring just before the systole. pre tarsal (pre-tar’sal). Situated in front of the tarsus. rethyroid, prethyroideal, pre thyroid ean (pre-thi’roid, -thi-roi’de-al, -roi‘de-an). Situated in front of the thyroid gland or thyroid cartilage. pre tibial (pre-tib’e-al). | Situated in front of the tibia. pre tracheal (pre-tra’ke-al). In front of the trachea. pre tuberculous (pre-tu-ber’ku-lus). Preceding the development of tubercle. pre tympanic (pre-tim-pan’ik). of the tympanum. pre urethritis (pre’’u-re-thri’tis). | Inflammation of a part of the vulvar follicles before the urethral orifice. pre valid in (pre-val’id-in). A proprietary camphor ointment used by inunction in phthisis. preventive (pre-ven’tiv). Same as prophylactic. preventorium (pre-ven-to’re-um). An institution for the purpose of checking the spread of disease. pre vermis (pre-ver’'mis). The superior vermiform proce of the cerebellum. pre vertebral (pre-ver’te-bral). of a vertebra. pre vertiginous (pre-ver-tij‘in-us). sense of being pushed from behind. pre vesical (pre-ves’ik-al) [L. pre before + tres i’ca bladder]. Situated in front of the bladder. Prevost’s sign (pra-véz’) [Jean Louis Prevost, Swi physician, born 1838]. See sign. pre zymogen (pre-zi’mo-jen). A substance existing in the cell which becomes converted into zymogen. priapism (pri‘ap-izm) [L. priapis'mus; Gr. πριαπ- ἐσμό:). Persistent abnormal erection of the penis, usually without sexual desire. It is seen in diseases and injuries of the spinal cord, and may be caused by vesical calculus and certain injuries to the penis. Situated in front Situated ventrad Having the