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To obtain accurate blood pressure measurements in clinical settings, especially when traditional methods are insufficient, healthcare professionals utilize the Doppler ultrasound technique. This method uses high-frequency sound waves to detect blood flow within the arteries, which is crucial for patients with conditions that complicate circulatory system assessment.
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Endoscopic Ultrasound (EUS) and FibroScan are valuable diagnostic tools in gastroenterology and hepatology, each with specific applications and techniques.
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Protein Complex Assembly02:41

Protein Complex Assembly

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Protein Complexes with Interchangeable Parts01:57

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Groups of proteins may form a complex where each protein in this complex has a different role in the overall execution of the complex’s function. Often some of the proteins in the complex can be replaced by a closely related variant to give a complex that contains many of the same components yet is functionally distinct.
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Complex Numbers01:29

Complex Numbers

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The real number system cannot represent the square root of a negative number, which restricts solutions for certain equations, such as quadratics with negative discriminants. To address this, the complex number system was developed, introducing the imaginary unit i, where i = √(-1). This extension allows for the representation of all roots, including those involving negative radicands.A complex number is written in the form x + yi, where x and y are real numbers. Here, x represents the...
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Formation of Complex Ions03:45

Formation of Complex Ions

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A type of Lewis acid-base chemistry involves the formation of a complex ion (or a coordination complex) comprising a central atom, typically a transition metal cation, surrounded by ions or molecules called ligands. These ligands can be neutral molecules like H2O or NH3, or ions such as CN− or OH−. Often, the ligands act as Lewis bases, donating a pair of electrons to the central atom. These types of Lewis acid-base reactions are examples of a broad subdiscipline called coordination...
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Dichorionic twin pregnancy with selective fetal growth restriction: prognosis, complications and implications of Doppler abnormalities.

Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology·2025
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Diagnostic Yield of Exome Sequencing in Fetuses with Sonographic Features of Skeletal Dysplasias but Normal Karyotype or Chromosomal Microarray Analysis: A Systematic Review.

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Related Experiment Video

Updated: Jan 29, 2026

Point-of-Care Ultrasound: A Review of Ultrasound Parameters for Predicting Difficult Airways
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Point-of-Care Ultrasound: A Review of Ultrasound Parameters for Predicting Difficult Airways

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Ultrasound Assessment Before Complex or Difficult Cesarean Section.

Kwok-Yin Leung1

  • 1Obstetrics and Gynaecology, Gleneagles Hospital Hong Kong, Hong Kong, China.

Diagnostics (Basel, Switzerland)
|January 28, 2026
PubMed
Summary

Preoperative ultrasound can identify risks for difficult cesarean deliveries, improving maternal and fetal outcomes. This review explores its benefits for complex cesareans and discusses universal screening potential.

Keywords:
cesarean sectionfibroidplacenta accretaplacenta previaultrasound

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Last Updated: Jan 29, 2026

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Is My Mouse Pregnant? High-Frequency Ultrasound Assessment
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Area of Science:

  • Obstetrics and Gynecology
  • Medical Imaging
  • Surgical Risk Assessment

Background:

  • Complex cesareans carry significant short- and long-term complications, with complication rates rising with repeat procedures.
  • Increasing cesarean section incidence necessitates better methods for identifying high-risk cases.
  • Current practice often limits preoperative ultrasound to specific indications like placenta accreta spectrum (PAS) disorders.

Purpose of the Study:

  • To review the benefits and applications of preoperative ultrasound in managing complex or difficult cesarean deliveries.
  • To evaluate ultrasound's role in assessing maternal and fetal risk factors for surgical difficulty.
  • To discuss the potential for routine preoperative ultrasound before all cesarean sections.

Main Methods:

  • Review of existing literature on preoperative ultrasound in cesarean delivery.
  • Identification of ultrasonographic markers for surgical risk factors such as placenta previa, PAS, fibroids, adhesions, and fetal vessels.
  • Analysis of ultrasound's accessibility, ease of use, and patient acceptance in obstetrical care.

Main Results:

  • Ultrasound can identify anatomical changes and risk factors (placenta previa, PAS, fibroids, adhesions, fetal vessels) predicting intraoperative complications.
  • Ultrasound is readily available, accessible, easy to perform, and well-accepted by patients.
  • Limited research exists on its role beyond PAS risk assessment in complex cesareans.

Conclusions:

  • Preoperative ultrasound is a valuable tool for assessing risks in complex cesarean deliveries.
  • Further research is needed to determine the efficacy and feasibility of routine preoperative ultrasound for all cesarean sections.
  • Integrating ultrasound assessment could enhance patient safety and surgical planning for difficult cesareans.