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Related Concept Videos

General Anesthesia: Overview01:24

General Anesthesia: Overview

Anesthesia is a medical procedure that uses drugs for CNS suppression to enable painless surgeries and procedures. The selection of anesthetics is influenced by their pharmacokinetic properties, side effects, and patient characteristics. Various types of anesthesia include general, local, regional, spinal, and inhalational.
General anesthesia induces unconsciousness in the whole body, while the others target specific areas or sensations. It is administered to minimize adverse effects, maintain...
Parenteral Anesthetics: Overview01:24

Parenteral Anesthetics: Overview

Intravenous anesthetics are drugs administered parenterally to induce anesthesia or sedation. Propofol is a widely used agent formulated as a 1% emulsion in soybean oil, glycerol, and egg phosphatide. It induces rapid anesthesia primarily due to its rapid distribution from the bloodstream to target tissues and is metabolized in the liver. However, it can cause significant pain on injection and hypertriglyceridemia. Fospropofol, a water-based prodrug of propofol, lacks these adverse effects.
Hemoglobin01:24

Hemoglobin

Hemoglobin is a globular protein made up of four subunits. Two of these subunits are alpha chains, and the other two are beta chains. Each subunit contains a molecule of heme, which has an iron atom and can bind to oxygen. When an oxygen molecule binds to one heme group, it changes the shape of hemoglobin, making it easier for the other heme groups to bind oxygen as well.
When all four heme groups are bound to oxygen, the resulting molecule is called oxyhemoglobin. As a result, arterial blood...
Hypoxia01:23

Hypoxia

Hypoxia is a medical condition characterized by an inadequate oxygen supply to body tissues. It typically manifests as a bluish discoloration of the skin and mucosae, especially in fair-skinned individuals, when hemoglobin (Hb) saturation drops below 75%.
Types of Hypoxia
There are four primary types of hypoxia, each resulting from a different cause:
1. Anemic hypoxia: This type occurs due to insufficient oxygen delivery caused by a lack of red blood cells (RBCs) or RBCs with abnormal or...
Oxygen Transport in the Blood01:27

Oxygen Transport in the Blood

Hemoglobin (Hb) is a crucial molecule in the human body, consisting of four polypeptide chains, each bound to an iron-containing heme group. This unique structure enables hemoglobin to bind to oxygen, with each molecule capable of combining with four molecules of oxygen, leading to rapid and reversible oxygen loading. When fully loaded with oxygen, it is called oxyhemoglobin, while hemoglobin that has released oxygen is called reduced hemoglobin or deoxyhemoglobin. As hemoglobin binds oxygen,...
Inhalational Anesthetics: Overview01:20

Inhalational Anesthetics: Overview

Inhalation anesthetics are drugs that induce general anesthesia upon inhalation. They work by increasing the sensitivity of GABAA receptors or inhibiting NMDA receptors, leading to a decrease in central nervous system activity. The depth of anesthesia can be rapidly adjusted by changing the concentration of the inhaled gas. Some common examples of inhalational anesthetics include volatile liquids like isoflurane, desflurane, sevoflurane and gases like xenon and nitrous oxide. Isoflurane, a...

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Related Experiment Video

Updated: Jun 20, 2026

Invasive Hemodynamic Characterization of the Portal-hypertensive Syndrome in Cirrhotic Rats
09:37

Invasive Hemodynamic Characterization of the Portal-hypertensive Syndrome in Cirrhotic Rats

Published on: August 1, 2018

Anesthesia and hemoglobinopathies.

Paul G Firth1

  • 1Department of Anesthesia and Critical Care, Massachusetts General Hospital, Boston, MA 02114, USA. pfirth@partners.org

Anesthesiology Clinics
|August 26, 2009
PubMed
Summary
This summary is machine-generated.

Hemoglobinopathies, like sickle cell disease and thalassemia, involve abnormal hemoglobin. New research highlights vascular inflammation

Related Experiment Videos

Last Updated: Jun 20, 2026

Invasive Hemodynamic Characterization of the Portal-hypertensive Syndrome in Cirrhotic Rats
09:37

Invasive Hemodynamic Characterization of the Portal-hypertensive Syndrome in Cirrhotic Rats

Published on: August 1, 2018

Area of Science:

  • Anesthesiology
  • Hematology
  • Vascular Biology

Background:

  • Hemoglobinopathies encompass a group of genetic disorders characterized by structural abnormalities or reduced production of hemoglobin.
  • Common examples include sickle cell disease and thalassemias, which can lead to cyanosis and other complications.
  • Recent research has elucidated the role of nitric oxide signaling dysfunction in the pathophysiology of these conditions.

Purpose of the Study:

  • To review common hemoglobinopathies.
  • To summarize the pathophysiology of hemoglobinopathies relevant to anesthesiology.
  • To outline current perioperative management strategies for patients with hemoglobinopathies.

Main Methods:

  • Literature review of common hemoglobinopathies.
  • Summary of current understanding of pathophysiology, focusing on nitric oxide signaling and vascular inflammation.
  • Outline of perioperative care guidelines.

Main Results:

  • Chronic vascular inflammation and damage are key factors in disease expression.
  • Hemoglobinopathies present unique challenges for anesthesiologists, either as the primary surgical indication or as a complicating factor.
  • Understanding pathophysiology is crucial for effective perioperative management.

Conclusions:

  • Hemoglobinopathies require careful consideration in surgical patients.
  • Advances in understanding pathophysiology inform perioperative anesthetic management.
  • Effective management involves a multidisciplinary approach to address disease-specific complications.