• Publications
  • Influence
Ovarian pregnancy and the intrauterine device.
TLDR
Estimation of the probable number of fertilized ova among women wearing IUD's suggests that the device reduces uterine implantation, tubal implantation and the incidence of ovarian pregnancy, which could be explained by the production in the endometrium of an agent interfering with either fertilization or implantation. Expand
The first five years of contraceptive service in a municipal hospital.
  • H. Lehfeldt
  • Medicine
  • American journal of obstetrics and gynecology
  • 1 November 1965
TLDR
The Bellevue Clinic provided a good training opportunity in contraception for medical students and practitioners on a national and international scale and increased in numbers every year in the first 5 years of operation. Expand
Legal abortion in Eastern Europe.
TLDR
Very low death rates reported from Hungary and Czechoslovakia (6 per 100,000 legal abortions) are believed to have resulted mainly from restricting legal abortion to the first three months of pregnancy unless a medical indication is present. Expand
Spermicidal effectiveness of chemical contraceptives used with the firm cervical cap.
TLDR
The low proportion of tests showing spermicidal power after 7 days and the contraceptive protection found in clinical tests 2, 4, 6 suggest that the cap affords protection without a sPermicidal supplement. Expand
The effectiveness of the cervical cap as a contraceptive method.
TLDR
To provide the information hitherto lacking, a series of cases from the authors' private practice (H.L. and H.G.L.) in New York City are compiled. Expand
Psychologic factors in contraceptive failure.
TLDR
It is suggested that the "cafeteria" method of prescribing contraceptives allows the patient to choose a method most suited to his/her lifestyle, and psychological problems with individual methods are described. Expand
The firm cervical cap: 156 case records.
  • H. Lehfeldt
  • Medicine
  • The Journal of sex education
  • 1 February 1949
TLDR
There is no large group of statistics which attest one way or the other as to the reliability of this method, but Histories are cited to demonstrate the effectiveness and harmlessness of the cervical cap as a contraceptive method. Expand
Unusual Uterine Perforation with a New Intrauterine Device
TLDR
Two case reports of silent uterine perforation by the IUD, TCu-200, are detailed, which indicate minimal side effects as well as a low expulsion rate. Expand
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