What's the difference between antedate and postdate?

Antedate


Definition:

  • (n.) Prior date; a date antecedent to another which is the actual date.
  • (n.) Anticipation.
  • (v. t.) To date before the true time; to assign to an earlier date; thus, to antedate a deed or a bond is to give it a date anterior to the true time of its execution.
  • (v. t.) To precede in time.
  • (v. t.) To anticipate; to make before the true time.

Example Sentences:

  • (1) Among women with recurrent genital herpes antedating pregnancy, the mean number of recurrences per trimester increased from 0.97 to 1.26 to 1.63 in the first through third trimester, respectively (p less than 0.05 for comparison between each trimester).
  • (2) This serendipitous observation antedates clinical signs and symptoms of dysphagia.
  • (3) Increased sensitivity to pressor agents and activation of the coagulation cascade occur early in the course of preeclampsia, often antedating clinically recognizable disease.
  • (4) It is estimated that intraventricular haemorrhage develops in 40-50% of infants with a birthweight of 1500 g or less but precisely how many individuals are affected by haemorrhage, or how many cases of disability are antedated by cerebral ischaemia, is not known because of the lack of effective low-cost instruments for the continuous, or at least frequent, assessment of cerebral metabolic status in the high-risk individual.
  • (5) This is well illustrated by those studies of cannabis that antedated the current concern for pair-feeding and surrogate fostering.
  • (6) The secretory abnormalities antedated the appearance of the neoplasms and were not caused by obstruction.
  • (7) To investigate the role of components of the renin-angiotensin-aldosterone system and plasma progesterone concentrations in the pathophysiology of hypertension in pregnancy, sequential measurements were made throughout pregnancy in 45 normotensive subjects, 41 other pregnant patients in whom hypertension became manifest only during pregnancy and 26 patients with chronic hypertension antedating pregnancy.
  • (8) Synovial sarcoma antedated the carcinoid syndrome in one patient who died; carcinoma of the breast was discovered one year after hemicolectomy in the other.
  • (9) Absence seizures antedating jerks by many years, myoclonic jerks reported as unilateral, generalized tonic-clonic seizures occurring during sleep and focal EEG abnormalities are other factors contributing to not recognizing JME.
  • (10) Of eight (19.8%) women who have not become pregnant two (2.7%) had previous infertility problems antedating the development of gestational trophoblastic disease.
  • (11) An idiopathic nephrotic syndrome associated with membranous glomerulopathy antedated the subsequent emergence of systemic lupus erythematosus in two patients (7-year-old and 14-year-old girls).
  • (12) In the latter two patients the rise in TLCSA did not antedate the rise in blood neutrophil count, suggesting that blood leukocyte colony-stimulating factor (CSF) per se probably has little biologic significance.
  • (13) Several reports are cited in which the onset of diabetes mellitus in middle-aged patients antedated by a short time the onset of clinically recognizable pancreatic carcinoma.
  • (14) Patient 1 also showed defective cellular immunity to Candida antigen which was reversed by treatment with ketoconazole and levamisole, antedating clinical improvement.
  • (15) The activity of many of these cells antedated CRs by 20-200 ms. A smaller proportion of cells exhibited inhibition of simple spike activity that antedated CRs.
  • (16) Fibrinoid necrosis and disruption of major arteries as well as veins were observed immediately after impact, antedating the evolution of parenchymal necrosis.
  • (17) This latter observation antedated the clinical observation that primary aldosteronism is accompanied by hypercalciuria.
  • (18) Antedating and outranking all those is the inherent tendency of the universal contractile chamber to rupture and spill its contents, especially when mural labors encounter sphincteric intransigence.
  • (19) This suggests the presence of a "rheumatoid diathesis" which long antedates the expression of the disease.
  • (20) The divergence of the methanogenic bacteria from other bacteria may be the most ancient phylogenetic event yet detected--antedating considerably the divergence of the blue green algal line for example, from the main bacterial line.

Postdate


Definition:

  • (v. t.) To date after the real time; as, to postdate a contract, that is, to date it later than the time when it was in fact made.
  • (v. t.) To affix a date to after the event.
  • (a.) Made or done after the date assigned.
  • (n.) A date put to a bill of exchange or other paper, later than that when it was actually made.

Example Sentences:

  • (1) These results suggest that high-risk pregnancies probably should not enter the postdate period since their doing so places the infant at serious risk.
  • (2) The postdate pregnancies in this relatively unselected population showed an increase in incidence of macrosomia and fetal heart rate abnormalities similar to those reported from referral centers.
  • (3) Postdatism and dysmaturity appear to contribute risk factors independently to infants admitted to the intensive care unit.
  • (4) Only one antepartum fetal death occurred in 1748 postdate pregnancies.
  • (5) One hundred four postdate pregnancies were managed according to a well-defined protocol calling for weekly oxytocin challenge tests and urinary estriols three times per week.
  • (6) A brief description of the definitions, incidence, and impact of postdate pregnancy is given for a baseline on which to base management decisions.
  • (7) In summary, ultrasound plays an important role in the evaluation of the postterm pregnancy, and its use should be considered in the following situations: 1) estimation of fetal weight in the potentially macrosomic infant before vaginal delivery is attempted; 2) frequent evaluation for oligohydramnios using the amniotic fluid index for the expectant management of the postdate pregnancy; 3) placental evaluation prior to elective induction of labor in a poorly dated pregnancy; and 4) evaluation of the postterm fetus for possible congenital abnormalities.
  • (8) Induction at 41.5 weeks' gestation or more comprehensive fetal surveillance than weekly nonstress testing are possible approaches to the management of postdates pregnancy, which need to be further studied.
  • (9) Postdatism, pregnancy-induced hypertension and rupture of the membranes were the major indications for induction of labor, accounting for 70% of the PGE2 group and 88% of the OA group.
  • (10) The medical-legal considerations associated with postdate pregnancies are not unlike those associated with the management of an uncomplicated pregnancy.
  • (11) It is recommended that: (1) pregnancies carried beyond 42 weeks do not require termination simply because they are post dates; (2) all postdate patients should be monitored during labor; (3) trained personnel to initiate neonatal resuscitation should be present at each postdate delivery.
  • (12) Older relatives were no more likely than younger ones to lose diagnoses nor to postdate their ages of first MDD onset.
  • (13) Patient's age, sex, whether or not dermographism predated or postdated onset of acne, symptoms of lesions, premenstrual flare, and history of atopy were recorded.
  • (14) The remaining 80% had a significantly lower incidence of postdatism, intrauterine growth retardation, and meconium-stained AF.
  • (15) A review of 46 perinatal deaths was conducted using a 1982 to 1985 regional perinatal network database of 6701 delivered postdate (greater than or equal to 42 weeks gestation) infants.
  • (16) Using a 1982-1985 regional perinatal network data base of 69,746 infants, a retrospective study was conducted to compare the perinatal outcome of 7,729 postdate infants (greater than or equal to 42 weeks' gestation) by maternal risk status.
  • (17) Compared with controls, the study group had a higher incidence of postdatism (36 versus 7%), intrauterine growth retardation (33 versus 8%), meconium-stained amniotic fluid (AF) (90 versus 9%), fetal heart rate (FHR) abnormalities upon admission to labor and delivery (58 versus 7%), and low 5-minute Apgar scores (46 versus 1.4%).
  • (18) Using a regional perinatal network database of 60,456 births, a study compared 3457 postdate (42 weeks or longer) infants to a control group of 8135 infants born at 40 weeks' gestation from 1982 through 1985.
  • (19) Amniotic fluid volume assessment is important particularly in cases of postdates and intrauterine growth retardation.
  • (20) Two groups of 32 patients each underwent oxytocin induction for postdatism, diabetes or hypertensive disorders of pregnancy.

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