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Biomedical subjects

L Keith

Publications and source records attributed to L Keith.

At least 19 recordsLinked to original sources
PubMed1991

Pregravid weight, gestational weight gain and current weight of women delivered of twins.

To determine whether large gestational weight gains result in higher maternal body weight within two years post-partum, we administered an anonymous survey to 423 mothers of twins at the Annual Twinsday Festival in Twinsburg, Ohio, in 1989 and 1990. Data collected included pregravid and current weight, age and parity, gestational weight gain and length of gestation. Data were grouped by patient age (18-24 years, 25-34 years and 35-44 years), parity (primipara or multipara) and length of gestation as preterm (less than 37 weeks) and term (greater than or equal to 37 weeks). Statistical analysis included paired t-tests, unpaired t-tests and chi-square as appropriate. Except for multiparas in the oldest age category, the mean current weight was higher than pregravid weight for each age and age/parity category. Comparison across age categories showed in pattern of increasing pregravid weight with increasing age for the total study sample (all women) and for primiparas; among multiparas, this trend was not as evident. Our findings suggest that large weight gains in twin gestations do not result in higher maternal body weight within two years postpartum. Such gains are associated with better intrauterine growth and should be considered when formulating weight gain recommendations for twin gestations.

Adolescent↗
PubMed1979

The Northwestern University Multihospital Twin Study. II. Mortality of first versus second twins.

The results of a multihospital study involving a total of 588 twin pairs born in Chicago in 1970-1975 are reported, with special respect to differences in mortality between first and second twins by time as well as by cause of death. Mortality was higher in second than in first twins and most commonly occurred after delivery and was the result of immaturity and of respiratory distress syndrome.

Asphyxia Neonatorum↗
PubMed1978

Experience with modern inert IUDs to date: a review and comments.

A review of data from various large-scale studies reveals as much variation between studies as between devices. Many factors clearly unrelated to the IUD design undoubtedly influence their efficacy and continued use. Thus, the conclusions of the 1968 FDA report on effectiveness and utility still appear valid at this time. They are: A. "The Committee finds adequate scientific data attesting to the effectiveness and utility of the intrauterine devices." B. "The intrauterine devices are highly effective in preventing pregnancy, although they are not quite as reliable as the hormonal contraceptives if the latter are taken according to instructions." C. "The rate of continuation of use is similar to that of the oral contraceptives and is far higher than that of traditional methods, at least among the socially and economically deprived."

Animals↗
PubMed1978

Monitoring care in abortion clinics.

Medical directors of clinics must monitor three aspects of service to ensure high-quality care in abortion clinics: (1) physician training and selection, (2) patient selection, and (3) abortion outcome monitoring as a means of providing an ongoing audit of clinic performance standards. Methods and criteria for monitoring and evaluating these parameters are discussed, and the importance of such monitoring is emphasized.

Abortion, Induced↗
PubMed1977

The relationship between congenital defects and the use of exogenous progestional "contraceptive" hormones during pregnancy: a 20-year review.

This review of 20 years of medical literature on the occurrence of congenital defects among offspring of women who ingested "progestational" or contraceptive hormones during pregnancy emphasizes the need for additional studies with carefully selected control groups. Other problems encountered in interpreting the existing literature, including the use of imprecise definitions, confusing nomenclature and inadequate clinical information, are also discussed.

Abnormalities, Drug-Induced↗
PubMed1977

Small dose anti-Rh therapy after first trimester abortion.

The standard prophylactic dose of anti-Rh immunoglobulin used in the United States is 300 microgram. For use after spontaneous or induced abortion and diagnostic amniocentesis, this dose represents immunological "overkill". A 50 microgram dose has been effectively used for these patients in other countries but the specific products used were not equivalent to the products available in the USA. No evaluation of this 50 microgram dose has been conducted in the USA. This is a pilot study of 315 patients given a 50 microgram dose or a 300 microgram dose of anti-Rh immunoglobulin after first trimester abortion. No patient in either treatment group developed atypical blood group antibodies within 6 months. This finding confirms that 50 microgram of the American product is protective after first trimester abortion.

Abortion, Induced↗