

PREGNANCY 



1175 PREH ALTER 



primitive, a variety of ectopic gestation wherein the 

 ovum is arrested and developed in the cervical canal ; 

 Secondary, in early abordon the ovum expelled from 

 the uterine cavity, remains in the cervical cavity. P., 

 Cornual, pregnancy in one of the horns of a two- 

 horned uterus. P., Extra-uterine, ectopic gestation ; 

 the development of the ovum outside of the cavity 

 of the uterus. It is due to any condition that will 

 prevent the entrance of the ovum into the uterus, 

 as, for instance, inflammation of the Fallopian tubes. 

 Pregnancy may take place within the tube, in the 

 ovary, in the part of the tube that traverses the 

 uterine wall, or in the abdominal cavity. P., False, 

 any condition in the abdomen that simulates preg- 

 nancy. P., Fatty, false pregnancy due to the pres- 

 ence of a large quantity of fat in the abdominal walls. 

 P., Feigned, pregnancy simulated by malingerers. 

 P., Gemellary, twin pregnancy. P., Hysterical, a 

 very deceptive condition of certain hysterical females 

 which simulates pregnancy. There is abdominal en- 

 largement, generally from tympanites, cessation of 

 menstruation, and other symptoms of pregnancy ; 

 movements of the intestines may counterfeit fetal 

 movements. The tympany of the abdomen and 

 the modifications of the signs usually produced by 

 anesthetization are important in the diagnosis. P., 

 Interstitial, a variety of extra-uterine and tubal 

 pregnancy, the ovum developing in that portion of 

 the oviduct that passes through the wall of the 

 uterus. P., Molar, pregnancy in which the ovum 

 is converted into a mole. P., Multiple, that form 

 of pregnancy in which the uterus contains two or 

 more fetuses. P., Mural, pregnancy in the uterine 

 wall ; it is classed as one variety of extra-uterine 

 pregnancy. P., Nervous. Synonym of P., Hys- 

 terical. P., Ovarian, the fecundation and growth 

 of the ovum taking place within the ovisac. P., 

 Phantom. Synonym of P. , Hysterical. P., Plural, 

 the development of more than one fetus at one 

 time. P., Precocious, pregnancy at an early age, 

 sometimes before the establishment of menstrua- 

 tion. P., Signs of. See Hegars, Braxton Hicks 

 and Jorisenne' s in Signs and Symptoms, Table of. 

 P., Signs or Tests of, those clinical manifesta- 

 tions by which the existence of pregnancy may be 

 demonstrated. There are three so-called absolute 

 signs of pregnancy : Ballottement, fetal movements, 

 and the fetal heart-sounds. Hegar's sign and Brax- 

 ton Hicks' sign are also valuable. Beccaria's sign of 

 pregnancy is an intense pulsating pain in the occipital 

 region. P., Single or Simple, the normal develop- 

 ment of a single fetus. P., Spurious. Synonym of 

 P. , False. P., Tubal, development of the ovum in 

 the oviduct. P., Tubo-abdominal. the ovum is de- 

 veloped in the ampulla and extends into the abdomi- 

 nal cavity. P., Tubo-ovarian, the ovum is attached 

 to the oviduct and ovary. P., Tubo-uterine. Same 

 as P., Interstitial. P., Twin, the presence of two 

 fetuses in the uterus. P., Unconscious, pregnancy, 

 of the existence of which the woman has not become 

 aware. 



Pregnant {preg / -nant) [pmgnans']. With child; 

 gravid. 



Prehallux (pre-hal'-nks) [pro?, before ; hallex or allex, 

 the great toe: gen., PrehaJlucis ; pi., Prehalluces\ 

 In biology, the tibial sesamoid bone found in mammals 

 having complete digits. A rudimentary structure cor- 

 responding to the prepollux is seen in the human 

 embryo of the second month. Cf. Prepollex and 

 Postminimus. 



Prehalter (prehawl'-ter) [pro-, before ; halter, leaping 

 weights : //., Prehalteres\ In biology, a membran- 



