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Related Concept Videos

Parenteral Anesthetics: Overview01:24

Parenteral Anesthetics: Overview

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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.
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General Anesthesia: Overview01:24

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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...
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Inhalational Anesthetics: Overview01:20

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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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Effect of Hepatic Disease on Pharmacokinetics: Dose Adjustments Due to Hepatic Impairment01:08

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Hepatic impairment, characterized by decreased liver function, does not uniformly mandate adjustments in drug dosage. Whether dosage modifications are necessary depends on various factors related to the drug's metabolism and elimination pathways. If a drug is primarily excreted via the kidneys and bypasses significant hepatic processing, if it undergoes minimal metabolic transformation in the liver, or if it is volatile and primarily expelled through the lungs, dose adjustments may not be...
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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...
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Pulmonary Function Tests01:25

Pulmonary Function Tests

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Pulmonary Function Tests (PFTs)
Pulmonary Function Tests are crucial diagnostic tools for assessing respiratory function, particularly in patients with chronic respiratory disorders. They comprehensively evaluate lung volumes, ventilatory function, breathing mechanics, diffusion, and gas exchange. These tests help diagnose pulmonary diseases and play a significant role in monitoring disease progression, evaluating disability, and assessing response to therapy.
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Anesthesia for Patients with Concomitant Hepatic and Pulmonary Dysfunction.

Geraldine C Diaz1, Michael F O'Connor1, John F Renz2

  • 1Department of Anesthesiology/Critical Care, University of Chicago, 5841 South Maryland Avenue, Chicago, IL 60637, USA.

Anesthesiology Clinics
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Patients with liver and lung failure face increased surgical risks. Understanding liver disease

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Area of Science:

  • Medicine
  • Anesthesiology
  • Pulmonology

Background:

  • Hepatic and pulmonary systems are interconnected, with failure in one impacting the other.
  • Improved treatments enhance quality of life and life expectancy for patients with combined organ failure.
  • The increasing prevalence of these patients necessitates careful surgical planning.

Purpose of the Study:

  • To highlight the relationship between hepatic and pulmonary function in patients undergoing surgery.
  • To emphasize the importance of evaluating hypoxemia in end-stage liver disease.
  • To inform anesthesiologists about the physiological effects of liver failure on pulmonary function.

Main Methods:

  • Review of current literature on hepatic and pulmonary failure.
  • Analysis of perioperative outcomes in patients with portopulmonary hypertension and hepatopulmonary syndrome.
  • Discussion of anesthetic considerations for patients with liver dysfunction.

Main Results:

  • Hypoxemia is common in end-stage liver disease and often treatable.
  • Portopulmonary hypertension and hepatopulmonary syndrome significantly increase perioperative risks.
  • Anesthesiologists must grasp liver failure's impact on pulmonary function.

Conclusions:

  • Successful surgical outcomes depend on anesthesiologists' understanding of liver failure's pulmonary implications.
  • Early recognition and management of pulmonary issues in liver disease are crucial.
  • Proactive anesthetic management can mitigate risks in this complex patient population.