摘要:

In order to clarify cross-sectional morphology of tetralogy of Fallot in the fetus, 202 rat fetuses with tetralogy of Fallot induced by maternal administration of bis-diamine were studied using cesarean section, the whole body freezing method and by photographing cross sections of the fetal heart on a freezing microtome. Some characteristic features such as large subaortic ventricular septal defects, aortic overriding over the ventricular septum, aortomitral fibrous continuity, and narrow infundibulum and pulmonary valve were found. Moreover, three subtypes were noticed. In classic tetralogy of Fallot with stenotic infundibulum, the size of the pulmonary arteries was smaller in proportion to the infundibular stenosis. In the second type with absent infundibular septum and severe valvular pulmonary stenosis, the pulmonary arteries were most hypoplastic. In the third type with absent pulmonary valve, the pulmonary arteries were dilated forming aneurysms. In the last type only, ventricles were dilated and grossly hypertrophic.

ISSN:1015-3837    

DOI:10.1159/000263593

出版商:S. Karger AG    

年代:1990

数据来源: Karger

摘要:

Preterm premature membrane rupture (PPROM) is known to accelerate fetal lung surfactant maturation. The mechanism for this is unclear. We report a case of prolonged PPROM, where the maturation of fetal surfactant was studied in detail by the serial analysis of surfactant phospholipids in the drained liquor.

ISSN:1015-3837    

DOI:10.1159/000263595

出版商:S. Karger AG    

年代:1990

数据来源: Karger

摘要:

The federal moratorium on fetal tissue transplantation research is creating an ever growing wall of separation between public and private research. This federal policy is based on undocumented psychological assumptions about what motivates women to have abortions, neglects to consider the suffering that could be prevented by allowing such research, disregards the fact that other forms of fetal research are performed at federal expense, infringes on the scientific freedom of federally employed scientists and compromises the federal government’s ability to control the quality of research. Efforts must be made to legally dismantle this wall before it further impedes the goals of medical researc

ISSN:1015-3837    

DOI:10.1159/000263596

出版商:S. Karger AG    

年代:1990

数据来源: Karger

ISSN:1015-3837    

DOI:10.1159/000263598

出版商:S. Karger AG    

年代:1990

数据来源: Karger

ISSN:1015-3837    

DOI:10.1159/000263599

出版商:S. Karger AG    

年代:1990

数据来源: Karger

ISSN:1015-3837    

DOI:10.1159/000263601

出版商:S. Karger AG    

年代:1990

数据来源: Karger

ISSN:1015-3837    

DOI:10.1159/000263578

出版商:S. Karger AG    

年代:1990

数据来源: Karger