scholarly journals OP25.09: In intrauterine growth restriction pulsatility indices of the fetal vessels correlate with neonatal circulation measured with near-infrared spectroscopy

2014 ◽  
Vol 44 (S1) ◽  
pp. 124-124
Author(s):  
J.C. Tanis ◽  
M.R. Boelen ◽  
D.M. Schmitz ◽  
L. Casarella ◽  
M.E. van der Laan ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Near Infrared Spectroscopy ◽  
Intrauterine Growth Restriction ◽  
Near Infrared ◽  
Growth Restriction ◽  
Intrauterine Growth ◽  
Fetal Vessels

Ante and Postnatal Ultrasound Contribution and Near-infrared Spectroscopy (NIRS) Monitoring in Preterm Newborns with Intrauterine Growth Restriction Under 32 Weeks of Gestation

2019 ◽  
Vol 70 (4) ◽  
pp. 1429-1433
Author(s):  
Mihaela Tunescu ◽  
Gabriela Olariu ◽  
Adrian Ratiu ◽  
Constantin Ilie
Keyword(s):  
Infrared Spectroscopy ◽  
Near Infrared Spectroscopy ◽  
Intrauterine Growth Restriction ◽  
Near Infrared ◽  
Neonatal Morbidity ◽  
Intrauterine Growth ◽  
Gestation Age ◽  
The World ◽  
Important Health ◽  
Preterm Newborns

IUGR remains an important health problem in developing countries around the world, being one of the major obstetrical syndromes associated with placental defects, but also one of the topical issues of neonatology, and in particular the association between IUGR and prematurity under 32 weeks of gestation. Neonatal morbidity and mortality remain significant and has an important economic impact. The need for more stringent diagnostic criteria remains a problem. The study proposes to follow the time of extraction of a premature pregnancy IUGR with gestation age �32 weeks, taking into account the centralization of bloodflow as well as IH (hypoxic index) during observation, following the immediate consequences on this new category - as well as their prognosis depending on the associated pathology using cerebral serial Doppler ultrasounds and near-infrared spectroscopy (NIRS).

scholarly journals Enteral feeding of intrauterine growth restriction preterm infants: theoretical risks and practical implications

2017 ◽  
Vol 39 (2) ◽  
Author(s):  
Valentina Bozzetti ◽  
Paolo E. Tagliabue
Keyword(s):  
Blood Flow ◽  
Intrauterine Growth Restriction ◽  
Near Infrared ◽  
Growth Restriction ◽  
Splanchnic Perfusion ◽  
Intrauterine Growth ◽  
Gut Function ◽  
Consequent Reduction ◽  
Splanchnic Oxygenation ◽  
Practical Implications

Intrauterine growth restriction (IUGR) infants are thought to have impaired gut function after birth secondary to intrauterine redistribution of the blood flow, due to placental insufficiency, with a consequent reduction of gut perfusion. For this reason, infants complicated by IUGR have been considered at higher risk of feeding intolerance. Postnatal evaluation of splanchnic perfusion, through Doppler of the superior mesenteric artery, and of splanchnic oxygenation, through near infrared spectroscopy measurements, may be useful in evaluating the persistence (or not) of the redistribution of blood flow occurred <em>in utero</em>.

204 Discriminating intrauterine growth-restricted piglets through near-infrared spectroscopy of amniotic fluids

2020 ◽  
Vol 32 (2) ◽  
pp. 230
Author(s):  
J. M. Feugang ◽  
M. Santos-Rivera ◽  
A. E. Grant ◽  
S. B. Park ◽  
D. Devos-Burnett ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Amniotic Fluid ◽  
Near Infrared Spectroscopy ◽  
Gestational Age ◽  
Near Infrared ◽  
Economic Losses ◽  
Data Set ◽  
Linear Discriminant ◽  
Intrauterine Growth ◽  
Size Classification

The occurrence of intrauterine growth restriction (IUGR) is a great concern in animal production systems, leading to substantial economic losses. The multifactorial causes of IUGR make their prediction before or during pregnancy a challenging task. The amniotic fluid, containing chemical secretions of both the developing fetus and the amnion-allantois membrane, may offer a unique opportunity to investigate the causes of IUGR in piglets. Here we applied near-infrared spectroscopy (NIRS) as a rapid tool to discriminate the chemical composition of the amniotic fluid from IUGR fetuses at different gestational ages. The uteri of gravid sows were dissected at 60% (n=6 sows) and 90% (n=6 sows) of gestational age. Amniotic fluids were collected with a sterile 10-mL syringe connected to an 18-G needle under visual guidance, and samples without blood contamination were kept at 4°C while the fetus was measured. Samples were selected according to fetal weight and were classified as small (mean − 2 SD), medium (mean), and large (mean + 2 SD) sizes in each litter. Selected samples were kept at −80°C until NIRS transmittance spectra collection (350-2500nm). At 60% of gestational age, male fetuses weighed 96±1.2, 133±1.7, and 159±1.9g and female fetuses weighed 117±1.1, 137±1.8, and 152±1.8g for small, medium, and large groups, respectively. The fetal weights at 90% of gestational age averaged 517±0.6, 757±0.6, and 912±0.7g for males and 532±0.6, 718±0.9, and 911±0.6g for females for small, medium, and large sizes, respectively. Chemometric analysis of the amniotic fluid spectra was applied to the wavelength range 1300-1600nm using a balanced data set (n=425) with an 80/20 calibration/validation distribution for linear discriminant analysis (LDA-PCA). Overall, we were able to discriminate samples according to fetal size and gestational age; LDA-PCA showed the highest size classification occurring with spectra derived from the small fetuses with an accuracy of 94.5-100% and 100% and 70.6% for the calibration and validation processes from 60% and 90% of gestational age, respectively. By contrast, when the analysis considered each sex at 60% of gestational age, the medium and small fetuses presented the highest size classification for females and males correspondingly. At 90% of gestational age, the large fetuses presented the best discrimination for both sexes. In conclusion, we were able to detect and discriminate chemical changes of the amniotic fluid from different fetuses using NIRS, indicating that this fluid contains molecules that may characterise IUGR in piglets. These observations will permit future investigations to identify specific molecules associated with IUGR that would lead to possible real-time corrective actions before birth. This work was supported by USDA-ARS grant no. 58-6402-3-018.

scholarly journals Evaluation of placental function using near infrared spectroscopy during fetal growth restriction

2010 ◽  
Vol 38 (1) ◽  
Author(s):  
Junichi Hasegawa ◽  
Masamitsu Nakamura ◽  
Ryu Matsuoka ◽  
Takashi Mimura ◽  
Kiyotake Ichizuka ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Near Infrared Spectroscopy ◽  
Fetal Growth ◽  
Fetal Growth Restriction ◽  
Near Infrared ◽  
Growth Restriction ◽  
Placental Function
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