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- Title
A késleltetett és az élettanilag megalapozott köldökzsinór-ellátás kórélettani háttere és klinikai jelentősége.
- Authors
Zsuzsanna, Nagy; Miklós, Szabó
- Abstract
Spontaneous placental transfusion may take up to 2-3 mins to complete, which insures that volumes are reduced during labour and that placental transfusion reflects a restoration of disturbed blood volume between placenta and fetus after birth. This explains that the benefits of delayed cord clamping (DCC) are placental transfusion (blood flows from placenta to the infant), increased haematocrit levels and increased birth weight, furthermore reduced rates of infant iron deficiency and anaemia. The cardiovascular transition at birth is triggered by lung aeration. In non-breathing term and preterm infants the immediate cord clamping increases the arterial blood pressure (30% within 4 heartbeats) and at the same time the preload and the cardiac output decrease by 30-50% because of the placental circulation arrest and the inadequate pulmonary circulation. The aim of the PBCC approach in preterm infants is to establish lung aeration, adequate pulmonary blood flow and pulmonary gas exchange prior to cord clamping. Maternal blood loss and the incidence of polycythaemia were within normal ranges and were not associated with duration of cord clamping. Further physiological research and larger randomised clinical studies are ongoing on effectiveness of PBCC in improving clinical benefits, which will help to spread these approches to become popular at our country too.
- Publication
Magyar Nőorvosok Lapja, 2021, Vol 84, Issue 3, p121
- ISSN
0025-021X
- Publication type
Article