(v. i.) To exist previously; to exist before something else.
Example Sentences:
(1) The major acute postoperative finding was aggravation of preexisting pharyngeal dysfunction.
(2) Preexistent diseases that could possibly be improved should be treated adequately before operation.
(3) As with abdominal abscess drainage, a preexisting fistula may be opacified only after several days of catheter drainage and cannot be predicted at the time of initial aspiration.
(4) Correlated roentgenographic and histomorphometric methods demonstrate that new bone develops by proliferation of preexisting osteoprogenitor cells lining the diploë and perivascular cells of the bone marrow stroma.
(5) The reconstructive operation performed in each case depended on the preexisting drainage procedure.
(6) In patients with preexistent congestive heart failure (CHF), predicted cumulative survival rates at 1, 3, and 5 years were 78%, 69%, and 57%, respectively, for group 1 (n = 23) and 90%, 83%, and 75%, respectively, for group 2 (n = 16).
(7) Irrespective of the exact incidence, 2 defined risk factors have been identified: preexisting renal disease and diabetes mellitus.
(8) A bifunctional fluorescent alkylating agent, dibromobimane, has been used to stabilize a preexisting primary loop in myosin subfragment 1 (S-1).
(9) We assert that OCD and AVN are relatively common, clinically significant lesions of the mandibular condyle often associated with preexisting internal derangement of the temporomandibular joint.
(10) A greater accumulation of the prodromi was furthermore found in younger patients, in hypertension and preexisting restriction of the heart function.
(11) Two radioactive peaks representing preexisting and newly synthesized Re were separated by sucrose density-gradient centrifugation.
(12) The usefulness of these scales, in relation to preexisting scales, is discussed.
(13) Three other genes are required for the longitudinal outgrowth of these axons along preexisting axon bundles as well as for the fasciculation of axons within these neuron bundles.
(14) In the absence of vimentin networks (MCF-7 cells), the initiation of desmin filament formation seems to start on the preexisting keratin filaments.
(15) It is not known if such natural cytotoxic activity represents background activity of preexisting clones of immunoglobulin-producing cells, cross-reacting antibodies appearing after immunization, physiological immune regulatory molecules, or components of an immune network.
(16) The functional abnormalities are the result of preexistent pulmonary disease or other disease processes that impair respiratory function, the anticipated effects of major surgery (e.g., pulmonary resection), and the complications of anesthesia and surgery.
(17) In contrast patients with preexisting pulmonary diseases or with impaired bronchopulmonary defense mechanisms may show harmful reactions even at concentrations which actually occur in urban and rural atmospheres.
(18) Tamoxifen administered on postnatal days 20-24, which is after the age of normal gland genesis, did not alter the number of preexisting glands.
(19) In a substantial number of cases preexisting limb ischemia may be promoted by failed attempts at vascular reconstruction, thus leading to severe wound healing complications and a higher level of amputation.
(20) However, the addition of analogs had little or no effect on the degradation of preexisting proteins, indicating that the introduction of abnormal proteins probably didn't overload the protein degradation system(s).
Prenatal
Definition:
(a.) Being or happening before birth.
Example Sentences:
(1) The prenatal risk determined by smoking pregnant woman was studied by a fetal electrocardiogram at different gestational ages.
(2) Although chronologic age may not be a good predictor of pregnancy outcome, adolescents remain a high-risk group due to factors which are more common among them such as biologic immaturity, inadequate prenatal care, poverty, minority status, and low prepregnancy weight, and because factors associated with an early adolescent pregnancy, such as low gynecologic age, may continue to influence the outcome of subsequent pregnancies.
(3) Further improvements in the prognosis of low birthweight infants will depend to a large extent on prenatal prevention of disease.
(4) Cloning of the A-T allele(s) will assist in the early or prenatal diagnosis of A-T and provide a firm basis for determining who, in the general population, carries this gene and is therefore at a high risk of cancer.
(5) Governmental officials as well as medical scientists in Taiwan have worked hard in recent years to develop and to implement various measures, such as prenatal diagnosis and neonatal screening, to lower the incidence of hereditary diseases and mental retardation in the population.
(6) The relationship between certain prenatal and background variables and maternal confidence also was assessed.
(7) Results of the present study show that epithelial cells of ciliated columnar type covering vocal cords change remarkably to nonciliated squamous cells between prenatal and postnatal stages.
(8) Women who had little or no prenatal care were oversampled, so this study is not representative of the New York City population.
(9) The first is that the supposed exaggerated winter birthrate among process schizophrenics actually represents a reduction in spring-fall births caused by prenatal exposure to infectious diseases during the preceding winter--i.e., a high prenatal death rate in process preschizophrenic fetuses.
(10) Tay-Sachs disease was diagnosed prenatally on the basis of enzyme assays and the electrophoretic pattern of extracts made from cultured amniotic fluid cells.
(11) These impairments were seen in animals of both sexes, a finding which challenges the view that only females prenatally treated with nicotine show deficits in maze learning.
(12) structural malformations, all congenital defects, and all disorders or abnormalities with possible prenatal etiology.
(13) It is concluded that prenatal sensitization to the immunogenic preparation used is unlikely to have occurred.
(14) In particular, recent work has shown a relationship between early (prenatal) exposure to lead and delayed cognitive development.
(15) Thermostability of placental catalase increases with prenatal development, while the enzyme from fetal liver remains moderately heat-stable throughout the gestation.
(16) The births were categorized by maternal age, the presence or absence of four putative risk factors, and the provision or nonprovision of early prenatal care.
(17) The 27 women who were interviewed had sought prenatal care early, late or not at all.
(18) A case of low atresia of the ileum, diagnosed prenatally by real-time ultrasound scanning, is presented.
(19) Abnormal prenatal findings included maternal pre-eclampsia, fetal growth retardation, and progressive intracranial sonolucency of the trisomic fetus.
(20) Prenatal causes of sensorineural hearing loss in children may be genetic or nongenetic, the deafness occurs alone or with other abnormalities.