|Other titles||Closure of the ductus arteriosus and its bearing on arteriosclerosis|
|Statement||by Oskar Klotz.|
|Series||CIHM/ICMH Microfiche series = CIHM/ICMH collection de microfiches -- no. 86157|
|The Physical Object|
|Pagination||1 microfiche (14 fr.)|
|Number of Pages||14|
Desligneres S, Larroche JC. Ductus arteriosus. I. Anatomical and histological study of its development during the second half of gestation and its closure after birth. II. Histological study of a few cases of patent ductus arteriosus in infancy. Biol Neonate. ; 16 (5)– Fay JE, Travill A. The "valve" of the ductus arteriosus--an Cited by: In , Giambattista Carcano described the ductus arteriosus in his book on the great cardiac vessels of the fetus However, Leo Bottali came to be associated with the arterial duct even though Bottali had misapplied the term ductus to the foramen ovale It was not until Rokitansky's handbook of followed by his beautifully illustrated monograph of that patent ductus arteriosus. This initial functional constriction of the ductus arteriosus is responsible for its ultimate anatomical closure; the loss of luminal blood flow produces a zone of hypoxia in the muscle media of the ductus necessary for irreversible anatomical closure. This hypoxic zone is associated with local induction of smooth muscle cell death in the media and local production of hypoxia-inducible growth by: Objective The mean closure time of the ductus arteriosus (DA) in full-term neonates is presumed to be 1–2 days after birth; however, whether this rate is accurate throughout the neonatal period is still unclear. In addition, the clinical determinants that influence DA closure remain unknown. Methods Echocardiography was performed times ( in boys, in girls) in participants Cited by: 3.
1) The ductus arteriosus connects the pulmonary artery to the pulmonary vein 2) It bypasses the pulmonary circuit 3) Its remnant is called ligamentum arteriosum. What large nerve is associated with the ductus arteriosus and later the ligamentum arteriosum? The recurrent laryngeal nerve. What is the O2 saturation in each area of fetal circulation? What does the umbilical vein turn into? Ligamentum teres hepatis. What does ductus . In utero, most of the RV stroke volume bypasses the still unexpanded lungs and enters the systemic circulation through the ductus arteriosus. In the vast majority of infants, the ductus arteriosus closes within the first week of life. There is delayed closure of the ductus arteriosus in preterm infants. c. Oxygen is the most important factor in controlling the closure of the Ductus Arteriosus d. Umbilical Arteries constrict at birth to preserve the infants blood. Know what happens to the umbilical vein, ductus venosus, umbilical arteries, foramen oval, and the ductus arteriosus in the adult body. Fetal Circulation Exam Three 14 Terms.
The ductus arteriosus, also called the ductus Botalli, is a blood vessel in the developing fetus connecting the trunk of the pulmonary artery to the proximal descending aorta. It allows most of the blood from the right ventricle to bypass the fetus's fluid-filled non-functioning lungs. Upon closure at birth, it becomes the ligamentum sor: aortic arch 6. They showed that, as for the ductus arteriosus, prostaglandin acts to keep the ductus venosus open, and cytochrome P haemoprotein and thromboxane A 2 promote its closure. In this study, we investigated whether or not antenatal maternal corticosteroid affected the time of closure, and found that the ductus venosus closed earlier in the Cited by: Barry A. Love, in Comprehensive Pediatric Hospital Medicine, Patent Ductus Arteriosus. The ductus arteriosus is the conduit for fetal blood to bypass the lungs in utero. The ductus usually closes in the first days of life. If it does not close, as pulmonary vascular resistance falls, blood shunts from the aorta into the pulmonary artery (Fig. ). In a separate line of investigation (Scheme 2), oxygen sensing has been identified with a mitochondrial redox mechanism, being located in ductus muscle and generating a reactive oxygen species in a stimulus-dependent redox signal is thought to produce its effect by inhibiting a distinct set of voltage-gated K + (K v) channels (ie, K v and K v ) and causing, via the attendant Cited by: