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Related Concept Videos

Stages of General Anesthesia01:22

Stages of General Anesthesia

Various sedation levels offer significant advantages in facilitating procedural interventions for patients undergoing medical or invasive surgical procedures. These levels span from anxiolysis to general anesthesia, providing a spectrum of sedative effects to cater to specific patient needs. Anxiolysis reduces anxiety and is achieved through minimal sedation, enabling patients to remain awake and responsive while feeling more at ease during the procedure. This level can benefit minor...
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...
Sedatives and Hypnotics: Overview01:23

Sedatives and Hypnotics: Overview

Sedatives are drugs that alleviate anxiety, while hypnotics induce sleep. Both classes of medication suppress neuronal activity, leading to a calming effect for sedatives and facilitating sleep for hypnotics.
Sedative-hypnotics are categorized into barbiturates, benzodiazepines (BZDs), and non-benzodiazepines or Z-drugs. These drugs work by suppressing central nervous system activity, and this suppression is dose-dependent. Older sedative medications, like barbiturates, follow a linear curve in...
Endotracheal Intubation II: Nursing Management01:17

Endotracheal Intubation II: Nursing Management

Endotracheal intubation is a critical procedure that can be lifesaving for many patients with respiratory distress or failure. The role of nursing in managing endotracheal tubes is pivotal, as it involves pre-intubation preparation, assisting during the procedure, and post-extubation care.
1. Nursing Care of Patients Before Intubation
Before the endotracheal intubation procedure, nurses play an essential role in ensuring the process goes smoothly. The nurses must be familiar with intubation...
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.
Endoscopic Procedures IV: Sigmoidoscopy and Laproscopy01:26

Endoscopic Procedures IV: Sigmoidoscopy and Laproscopy

Sigmoidoscopy and laparoscopy are distinct medical procedures that enable physicians to internally inspect different parts of the GI tract. Although they serve different purposes, each is essential for diagnosing and, in some cases, treating various medical conditions.
Sigmoidoscopy
Sigmoidoscopy is a diagnostic procedure that uses a flexible sigmoidoscope equipped with a light source and camera to examine the rectum and sigmoid colon. The procedure involves inserting the tube through the anus...

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Related Experiment Video

Updated: Jun 23, 2026

Halogenated Agent Delivery in Porcine Model of Acute Respiratory Distress Syndrome via an Intensive Care Unit Type Device
09:36

Halogenated Agent Delivery in Porcine Model of Acute Respiratory Distress Syndrome via an Intensive Care Unit Type Device

Published on: September 24, 2020

Closed-loop control for intensive care unit sedation.

Wassim M Haddad1, James M Bailey

  • 1School of Aerospace Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0150, USA. wm.haddad@aerospace.gatech.edu

Best Practice & Research. Clinical Anaesthesiology
|May 20, 2009
PubMed
Summary
This summary is machine-generated.

Active control systems show promise for improving drug administration in anesthesia and critical care. Closed-loop control, using compartmental models, offers a more precise alternative to manual drug delivery for intensive care unit sedation.

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Last Updated: Jun 23, 2026

Halogenated Agent Delivery in Porcine Model of Acute Respiratory Distress Syndrome via an Intensive Care Unit Type Device
09:36

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Published on: September 24, 2020

Drug-Induced Sleep Endoscopy (DISE) with Target Controlled Infusion (TCI) and Bispectral Analysis in Obstructive Sleep Apnea
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Published on: December 6, 2016

Area of Science:

  • Pharmacology and Anesthesiology
  • Systems Biology and Control Theory

Background:

  • Manual drug administration in intensive care units (ICUs) is often imprecise and relies on clinician expertise.
  • Potent drugs significantly impact consciousness and vital functions, necessitating careful monitoring and control.
  • Current open-loop control methods can be tedious, time-consuming, and variable in quality.

Purpose of the Study:

  • To explore the clinical applications of active control in pharmacology, particularly for anesthesia and critical care.
  • To investigate the use of nonnegative and compartmental models for closed-loop drug administration.
  • To address the challenges and opportunities in developing closed-loop control systems for ICU sedation.

Main Methods:

  • Utilizing nonnegative and compartmental system theory for modeling physiological and pharmacological processes.
  • Developing and investigating various closed-loop control paradigms.
  • Applying these models to the specific problem of intensive care unit sedation control.

Main Results:

  • Nonnegative and compartmental models provide a robust framework for understanding drug dynamics.
  • Closed-loop control systems offer potential for improved drug delivery precision.
  • Several control algorithms, including adaptive and optimal control, are suitable for ICU sedation.

Conclusions:

  • Closed-loop control based on dynamical systems models warrants further investigation for enhancing drug delivery in ICUs.
  • Active control strategies can potentially optimize sedation management, improving patient outcomes.
  • The integration of advanced control theories can overcome limitations of manual drug administration.