Non-Invasive Estimation of Hemoglobin Using a Multi-Model Stacking Regressor

Artificial Intelligence in Pregnancy: A Scoping Review

“…• A real time prediction system using wearable devices and mobile generated data was proposed by authors in [58] to help pregnant women make quick decisions in case of miscarriage or probable miscarriage. • Maternal anemia was addressed using ML models by [173] and [174]. • Postpartum complications were reported by [175] (health administrative data and ML techniques were applied to predict the risk of common maternal postpartum complications) and [52] (DM models were used to create to predict the need for neonatal resuscitation)…”

Correlation between pleth variability index and ultrasonic inferior vena cava-collapsibility index in parturients with twin pregnancies undergoing cesarean section under spinal anesthesia

“…The principle is that during mechanical ventilation or spontaneous breathing, intra-thoracic pressure changes periodically and the IVC return resistance changes periodically with it, when the circulating volume is insufficient, the more the IVC return blood flow is affected by intra-thoracic pressure changes, the more pronounced its respiratory variability. The IVC is influenced by intra-thoracic respiratory cycle pressure changes, such as venous return factors, pulmonary circulation resistance, and right heart preload, but the specific reference standards for IVC width and respiratory variability are still not uniform [ 11 ]. When maternal blood volume is insufficient, IVC collapse is significantly greater; when blood volume is excessive, the IVC is relatively full.…”

“…It has been shown that the IVC collapse index decreases with increasing weeks of gestation [(40.8 ± 15.2)% at < 14 weeks of gestation, (32.6 ± 19.9)% at 20–28 weeks, and (26.5 ± 11.8%) at 28–34 weeks], with a rebound [(32.2 ± 19.9)%] by full term (> 27 weeks), with a significant difference ( F = 3.557, P = 0.017), with < 14 weeks of gestation significantly higher than 28–34 weeks ( P = 0.009) [ 11 , 12 ]. PVI is effective in determining changes in blood volume after general anesthesia combined with epidural block and has recently been used successfully in some studies to assess volume status in spontaneously breathing women [ 11 , 12 ]. The limitations of this study may lie in the fact that intraoperative PVI does not reflect maternal volume status because of the unstable tidal volume and surgical maneuvers during spontaneous breathing.…”

“…The Masimo ® Radical 7 (SET ® sensor) used in this study is more stable than the Masimo ® Radical 5 used in other studies, minimizing interference from autonomic respiratory variability. We believe that the combination of the PVI with the US measurement of the IVC-CI provides better sensitivity and enhanced specificity as a clinically valuable predictor of maternal volume in twin pregnancies [ 11 , 12 ]. Previous editions of the relevant guidelines recommended maternal measurement in the left lateral position and at end-expiration, with the latest version recommending the supine position, but due to the greater impact of the enlarged uterus on IVC reflux compression in the supine position in women with twin pregnancies, we have adopted a 15° left lateral position to reduce the impact on IVC [ 13 ].…”

A Systematic Mapping Study on Research in Anemia Assessment with Non-Invasive Devices

“…Co-oximeters are the only kind of non-invasive device already on the market, although a lot of papers propose improvements to this technology: 13 papers published in 2019 have been identified as setting a proposal to improve measurements by the use of optical sensors. The main trends to enhance co-oximetry are the use of artificial intelligence approaches [40][41][42][43][44][45][46], find the optimum wavelengths [40][41][42][43][47][48][49][50][51][52], noise reduction [45,46], and minimize illumination influence [45].…”