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Related Concept Videos

Hemorrhagic Stroke l: Introduction01:17

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...
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...
Intestinal Obstruction II: Pathophysiology01:07

Intestinal Obstruction II: Pathophysiology

Intestinal obstruction triggers a series of physiological responses, starting with gas and fluid accumulation in the bowel segment proximal to the obstruction, leading to distension. This distended intestine compresses the diaphragm, hindering lung expansion and potentially leading to reduced respiratory effort, atelectasis, and pneumonia.To overcome the blockage, the gut intensifies contractions, causing colicky abdominal pain, nausea, and vomiting, which reduces fluid and food intake and...
Epistaxis01:30

Epistaxis

Epistaxis, or nosebleeds, occurs when small, swollen blood vessels in the nasal mucous membrane rupture. Typically, the anterior septum is the primary site of occurrence.
Etiology
Possible causes of this condition include high blood pressure, trauma, low humidity, upper respiratory tract infections, allergies, foreign bodies, nasal inhalation of corticosteroids or illicit drugs, excessive use of decongestant nasal sprays, facial or nasal surgery, anatomic malformation, tumors, or systemic...
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.
Measurement of Blood Pressure01:17

Measurement of Blood Pressure

Assessing blood pressure is a standard procedure executed in virtually all medical environments. The method utilized today was established over a hundred years ago by an innovative Russian doctor, Dr. Nikolai Korotkoff. The soft ticking noise, known as Korotkoff sounds, heard while taking blood pressure readings results from turbulent blood flow within the vessels. The apparatus required for this procedure includes a sphygmomanometer, a blood pressure cuff attached to a gauge, and a stethoscope.

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Related Experiment Video

Updated: Jun 1, 2026

Laparoscopic Extracorporeal Knot-Tying for Uterine Vessel Occlusion during Hysterectomy with Cervical Cerclage in Large Uteri
05:21

Laparoscopic Extracorporeal Knot-Tying for Uterine Vessel Occlusion during Hysterectomy with Cervical Cerclage in Large Uteri

Published on: September 12, 2025

Obstetric hemorrhage.

C McLintock1, A H James

  • 1National Women's Health, Auckland City Hospital, Auckland, New Zealand. claire.mclintock@adhb.govt.nz

Journal of Thrombosis and Haemostasis : JTH
|June 15, 2011
PubMed
Summary
This summary is machine-generated.

Massive obstetric hemorrhage, a leading cause of maternal death, requires careful management. Early identification of risk factors and tailored transfusion strategies are crucial for preventing and treating postpartum hemorrhage (PPH).

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Continuous Telemetric In Utero Tracheal Pressure Measurements in Fetal Lambs
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Continuous Telemetric In Utero Tracheal Pressure Measurements in Fetal Lambs

Published on: December 22, 2023

Related Experiment Videos

Last Updated: Jun 1, 2026

Laparoscopic Extracorporeal Knot-Tying for Uterine Vessel Occlusion during Hysterectomy with Cervical Cerclage in Large Uteri
05:21

Laparoscopic Extracorporeal Knot-Tying for Uterine Vessel Occlusion during Hysterectomy with Cervical Cerclage in Large Uteri

Published on: September 12, 2025

Continuous Telemetric In Utero Tracheal Pressure Measurements in Fetal Lambs
05:40

Continuous Telemetric In Utero Tracheal Pressure Measurements in Fetal Lambs

Published on: December 22, 2023

Area of Science:

  • Obstetrics and Gynecology
  • Hematology
  • Critical Care Medicine

Background:

  • Massive obstetric hemorrhage is a significant cause of maternal mortality worldwide, accounting for 25% of annual maternal deaths.
  • Postpartum hemorrhage (PPH) accounts for over 80% of obstetric hemorrhages, often occurring without identifiable risk factors.
  • Disseminated intravascular coagulation (DIC) is a frequent early complication in massive obstetric hemorrhage, differing from its presentation in surgical or trauma-induced bleeding.

Purpose of the Study:

  • To highlight the critical nature of massive obstetric hemorrhage and the need for effective management strategies.
  • To emphasize the importance of primary prevention through risk factor assessment for PPH.
  • To discuss current understanding and potential strategies for transfusion management in severe PPH, considering its unique pathophysiology.

Main Methods:

  • Review of existing literature and clinical data regarding obstetric hemorrhage and its management.
  • Analysis of the pathophysiology of massive obstetric hemorrhage, including DIC.
  • Evaluation of transfusion strategies and the potential role of agents like recombinant activated factor VII (rFVIIa).

Main Results:

  • While specific clinical trial data for PPH transfusion management is limited, strategies may need to differ from other bleeding situations, particularly regarding red blood cell to plasma component ratios.
  • Recombinant activated factor VII (rFVIIa) should be used with caution in managing major PPH.
  • Early hysterectomy is recommended for bleeding due to placenta accreta or uterine rupture, but a trial of rFVIIa may be considered for uterine atony unresponsive to transfusion.

Conclusions:

  • Effective management of massive obstetric hemorrhage requires a multi-faceted approach, including risk assessment, appropriate delivery settings, and tailored transfusion protocols.
  • Understanding the specific pathophysiological processes in PPH is essential for optimizing transfusion strategies.
  • While hysterectomy remains a key intervention for certain conditions, alternative treatments like rFVIIa may have a role in specific PPH scenarios.