Low systemic blood flow and pathophysiology of the preterm transitional circulation.

Abstract:

:The transitional circulation of the preterm infant differs significantly from the term infant. The preterm infant is uniquely at risk of hypotension and low systemic blood flow states due to failure or delay in the normal transitional circulation processes. The maintenance of normal tissue oxygenation requires maintenance of systemic blood flow and normal blood oxygen levels. Reduction in either of these physiological parameters may result in organ damage, leading to complications such as intraventricular haemorrhage and longer term neurodevelopmental disability. The identification and ongoing monitoring of low systemic blood flow in the preterm infant is more challenging than in older children and some of the assessment techniques used in paediatric and adult intensive care settings do not apply to the neonatal setting. The presence of ductal and atrial shunts makes the measurement of cardiac output problematic in the preterm infant so other newer ways of measuring systemic blood flow need to be considered. The proper treatment of hypotensive and low cardiac output states in the preterm infant requires primarily an understanding of the underlying pathophysiology.

journal_name

Early Hum Dev

journal_title

Early human development

authors

Kluckow M

doi

10.1016/j.earlhumdev.2005.03.006

keywords:

subject

Has Abstract

pub_date

2005-05-01 00:00:00

pages

429-37

issue

5

eissn

0378-3782

issn

1872-6232

pii

S0378-3782(05)00064-2

journal_volume

81

pub_type

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