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Clinical Trial Summary

Experimental nociceptive stimulation of the fetus and neonate induces pulmonary artery vasoconstriction. The investigators assessed whether echocardiography for Ductus arteriosus screening may generate this hemodynamic response and whether postural support would be able to modulate it.

Study design

Prospective, single center, randomized study in less than 29 weeks of gestation neonates, with a post natal age < 48 hours, and requiring invasive mechanical ventilation.

Crossover design with order of echocardiographies determined by computer randomization: in one group ultrasounds are performed with postural support, than standard conditions, in the other, ultrasounds are performed in standard conditions than with postural support.

The objective of the study is to assess the ratio of the acceleration time/ejection time of pulmonary arterial flow.

The others objectives are to assess echocardiographic-Doppler features (ductus arteriosus shunt pattern, pulmonary flow pattern, estimated systolic pulmonary arterial pressure, right and left ventricular functions using tissue Doppler imaging and speckle-tracking echocardiography), pain assessment with a clinical scale and heart rate variability analysis.

Clinical Trial Description


Study Design

Allocation: Randomized, Intervention Model: Crossover Assignment, Masking: Open Label, Primary Purpose: Prevention

Related Conditions & MeSH terms

NCT number NCT02893956
Study type Interventional
Source University Hospital, Montpellier
Status Completed
Phase N/A
Start date April 2014
Completion date June 2015

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