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Pathophysiology of Diabetes01:20

Pathophysiology of Diabetes

Diabetes mellitus is a chronic metabolic disorder characterized by hyperglycemia. The four categories of diabetes are type 1 diabetes, type 2 diabetes, other specific types of diabetes, and gestational diabetes.
Type 1 diabetes is characterized by autoimmune-mediated destruction of pancreatic β cells, with environmental factors potentially triggering this process in genetically susceptible individuals. Despite many not having a family history, certain genes increase susceptibility, suggesting a...
Hemorrhagic Stroke ll: Pathophysiology01:29

Hemorrhagic Stroke ll: Pathophysiology

A hemorrhagic stroke develops when a cerebral blood vessel ruptures, allowing blood to escape into the surrounding brain tissue, as in intracerebral hemorrhage (ICH), or into the subarachnoid space, as in subarachnoid hemorrhage (SAH). Because the skull is a rigid compartment, the sudden presence of extravascular blood rapidly increases intracranial pressure and compresses adjacent neural structures, leading to immediate tissue injury and impaired cerebral perfusion.Mass Effect and Primary...
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Hemorrhagic Stroke l: Introduction

A hemorrhagic stroke is an acute neurological event that occurs when a weakened cerebral blood vessel ruptures, allowing blood to accumulate within or around the brain. The sudden release of blood forms a focal hematoma that increases intracranial pressure, displaces neural tissue, and can obstruct cerebrospinal fluid pathways. These effects may be compounded by intraventricular extension of the hemorrhage, cerebral edema, or compression of adjacent structures, all of which contribute to...
Fetal Circulation01:14

Fetal Circulation

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Disorders of Hemostasis01:24

Disorders of Hemostasis

Hemostasis, the process that stops bleeding after a blood vessel injury, is crucial for maintaining the integrity of the circulatory system. However, disorders of hemostasis can disrupt this delicate balance, leading to either excessive clotting or bleeding. These disorders can be broadly classified into thromboembolic disorders and bleeding disorders.
Thromboembolic Disorders
Two factors primarily cause thromboembolic conditions.
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Updated: Jun 16, 2026

Mouse Model of Surgical Uterine Injury and Subsequent Pregnancy Outcomes
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Published on: June 27, 2025

Placenta accreta and postpartum hemorrhage.

Andrew D Hull1, Robert Resnik

  • 1Department of Reproductive Medicine, Division of Perinatal Medicine, University of California San Diego, CA 92103-8433, USA. adhull@ucsd.edu

Clinical Obstetrics and Gynecology
|February 10, 2010
PubMed
Summary

Placenta accreta, abnormal placental adherence, can cause severe postpartum hemorrhage. Prenatal diagnosis and elective delivery at specialized centers improve outcomes for this high-risk condition.

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Area of Science:

  • Obstetrics and Gynecology
  • Maternal-Fetal Medicine

Background:

  • Placenta accreta involves abnormal adherence of the placenta to the uterine wall.
  • This condition can lead to severe postpartum hemorrhage due to failure of normal placental separation after delivery.

Purpose of the Study:

  • To summarize the key aspects of placenta accreta management.
  • To highlight the importance of prenatal diagnosis and specialized care.

Main Methods:

  • Review of existing literature and clinical guidelines on placenta accreta.
  • Emphasis on diagnostic and management strategies.

Main Results:

  • Prenatal diagnosis of placenta accreta is crucial for optimal outcomes.
  • Elective delivery in specialized centers is associated with the best results.
  • Effective management requires a multidisciplinary approach.

Conclusions:

  • Timely diagnosis and planned delivery significantly improve maternal outcomes in placenta accreta.
  • Establishment of obstetric hemorrhage protocols is essential for all units.
  • Care coordination at expert centers is vital for managing this complex obstetric emergency.