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Biomedical subjects

G Amyot

Publications and source records attributed to G Amyot.

9 recordsLinked to original sources
PubMed1987

Maternal and neonatal outcome in pregnancies with no risk factors.

Between November 1979 and April 1984, 790 consecutive pregnant women who considered themselves as having a "normal" pregnancy were followed in private practice from 9 weeks' gestation until 6 weeks post partum. The women had no pre-existing disease or problem classified as a risk to the pregnancy at the time of their first visit, had a singleton pregnancy and gave birth at Notre-Dame Hospital, Montreal. Maternal complications occurred during the course of pregnancy in 181 women (23%). Complications were mostly related to obstetric conditions (10%), such as preterm labour, intrauterine growth retardation (IUGR) and antepartum hemorrhage, or to medical conditions (12%), the most prevalent of which was hypertension (77% of medical conditions). Neonatal complications occurred in 183 infants (23%). The corrected perinatal death rate was 2.5 per 1000. Prematurity, IUGR and dysmaturity/postmaturity accounted for nearly half of the complications. Hyperbilirubinemia occurred in 7% of the cases. Among women without any maternal complications during pregnancy, the frequency rate of neonatal complications was 19%, compared with 23% among the entire group of 790 women. Our results suggest that the absence of maternal complications does not protect the infant from a neonatal complication. Further refinement is needed to identify markers of obstetric, medical and neonatal complications in pregnancies with no risk factors.

Adult↗
PubMed1985

A prospective study of blood pressure in pregnancy: prediction of preeclampsia.

A prospective study of blood pressure recording was conducted in 1000 patients, at each antenatal visit, with the use of an automatic random-zero sphygmomanometer. In 46 patients, among 808 primigravid women, who developed preeclampsia, the diastolic and mean blood pressures were significantly elevated compared to values at the first antenatal visit (p less than 0.01, 9 to 12 weeks). This difference was sustained throughout pregnancy until delivery by at least 10 mm Hg as compared to pressures in the normotensive group. Sensitivity for predicting preeclampsia early in pregnancy with an elevated blood pressure measurement (130 to 135/80 to 85 mm Hg) ranged from 16% to 57% while specificity ranged from 75% to 98%. The results substantiate an early vasospasm (9 to 12 weeks) in those women destined to develop preeclampsia.

Adult↗
PubMed1982

[Prospective study of arterial pressure during pregnancy. Prediction of hypertensive complications].

A prospective study of measure of blood pressure was conducted in 366 pregnant women at each antenatal visit, using an automatic random-zéro sphygmomanometer. In fourteen patients, among 244 primigravidae, who developed preeclampsia, systolic and diastolic arterial blood pressures were already significantly elevated by 13-16 weeks of pregnancy. This difference was sustained throughout until delivery. In addition, the systolic and diastolic arterial blood pressure, in those women destined to develop preeclampsia, did not show a dip between 13-20 weeks as in the normotensive group. There was no difference in arterial blood pressure during pregnancy between primigravidae and multigravidae who remained normotensive.

Blood Pressure↗
PubMed1976

Maternal, fetal, and intra-amniotic hormonal and biologic changes resulting from a single dose of hydrocortisone injected in the intra-amniotic compartment.

A single intra-amniotic injection of 500 mg. of hydrocortisone sodium succinate was done 48 hours before elective cesarean section in nine patients in week 39 of gestation. Following that single injection, estriol values fell in all three compartments. Cortisol was rapidly increased in the maternal compartment but returned to normal levels at the time of cesarean section in maternal and umbilical vein cord plasma while remaining elevated in the amniotic compartment. Progesterone was increased in the fetal and amniotic compartments but remained essentially unchanged in the maternal compartment. The foam test was constantly improved in the direction of an intermediary or positive test and the quantitative lecithin-sphingomyelin values were increased by almost twofold. In our series, none of our babies developed a respiratory distress syndrome nor had any difficulty with the first breath or the Apgar score. We did not deliver any low-birth-weight infants and the creatinine values were even improved by our injection.

Adolescent↗
PubMed1975

[Prenatal care].

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Female↗