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Biomedical subjects

D B Weiss

Publications and source records attributed to D B Weiss.

At least 55 records · Page 3Linked to original sources
PubMed1976

Ossification centers as evidence of fetal lung maturity.

Fetal pulmonary maturity based on visualization of one or both fetal knee secondary centers of ossification was assessed in 84 gravidas. Amniotic fluid lecithin/sphingomyelin ration of 2:1 or greater was the criterion of fetal lung maturity. It was concluded that when antenatal radiographs reveal the presence of both centers of ossification, fetal lung maturity can be assured in 100% of the fetuses. When the distal femoral center along is seen, only 60% of the fetuses will have mature lungs.

Amniotic Fluid↗
PubMed1975

Erythrocytosis due to erythropoietin-producing uterine fibromyoma.

Erythrocytosis has been observed to occur infrequently in association with uterine fibromyomas. Study of this case revealed erythrocytosis prior to surgery and a remission was noted after myomectomy. Elevated erythropoietin activity in this patient's serum was demonstrated. The erythropoietin activity in the tumor tissue extract was 10 times higher than in the control tissue extract. We postulate that the tumor itself was responsible for the erythrocytosis observed. The mechanisms proposed to explain polycythemia in such a tumor were revised and our conclusion is that the tumor produced the erythropoietin autonomously and is not subjected to feedback control mechanism.

Adult↗
PubMed1975

Anti-PP1Pk (anti-Tja) and habitual abortion.

Blood group incompatibility as a cause of early or habitual abortion has been a matter of much debate. However, the abortion rate in such cases is much higher than that found in the general population. Two sisters having the rare genotype pp and anti-PP1Pk (anti-Tja) in their serum were reported as having habitual abortions; a third sister, with a normal P group, had a normal obstetric history. The relationship of anti-PP1Pk (anti-Tja) to the high rate of habitual abortion was discussed and added support was given to the existing evidence that certain maternal blood group antibodies can affect embryos early in uterine life.

Abortion, Habitual↗