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General Anesthesia: Overview

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: Overview

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.

Stages of General Anesthesia

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...

Local Anesthetics: Pharmacokinetics

Local Anesthetics: Pharmacokinetics

The potency and duration of action of local anesthetics (LAs) are determined by their pharmacokinetics. Pharmacokinetics describes how LAs are absorbed, distributed, metabolized, and eliminated from the body. When administered to the vascular tissues, LAs are quickly absorbed and enter the systemic circulation, reducing their localized effects. Adding vasoconstrictors such as epinephrine to LAs reduces their absorption into the systemic circulation, making them clinically effective. The...

Inhalational Anesthetics: Overview

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...

Local Anesthetics: Clinical Application as Epidural Anesthesia

Local Anesthetics: Clinical Application as Epidural Anesthesia

Epidural anesthetics are administered in the fat-filled epidural space, the outermost part of the spinal canal. This technique is commonly employed for pain management and anesthesia during lower abdomen and pelvis surgeries or labor and delivery.
Since epidural anesthetics can be infused through an epidural catheter, all types of drugs, including short-acting ones, can be administered. Chloroprocaine and lidocaine are examples of short and long-duration anesthetics, respectively. Bupivacaine...

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Non-Intubated Video-Assisted Thoracoscopic Surgery

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[Do anesthetic techniques influence postoperative outcomes? Part I].

N Esteve¹, J Valdivia, A Ferrer

¹Hospital Universitario Son Espases, Palma de Mallorca, Islas Baleares, España. neus.esteve@ssib.es

Revista Espanola De Anestesiologia Y Reanimacion

|November 3, 2012

Summary

Anesthetic techniques significantly impact postoperative outcomes, especially in high-risk surgical patients. Research should explore intermediate outcomes to better understand these effects on mortality and complications.

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Area of Science:

Anesthesiology
Perioperative Medicine
Surgical Outcomes Research

Context:

High-risk patients undergoing non-cardiac surgery face elevated postoperative complications and mortality.
Recent advancements necessitate updated research indicators for anesthetic techniques' impact on outcomes.
Focusing on intermediate outcomes may better differentiate anesthetic technique effectiveness.

Purpose:

To review major controversies regarding anesthetic techniques' influence on postoperative outcomes.
To group the impact of anesthetic techniques into nine key investigation areas.
To discuss the foundation of postoperative outcomes research, mortality, and cardiovascular/respiratory complications.

Summary:

This review examines the influence of anesthetic techniques on postoperative outcomes in high-risk surgical patients.
It covers mortality, cardiovascular, and respiratory complications as critical areas of investigation.
The study emphasizes the need for new indicators and intermediate outcomes in perioperative research.

Impact:

Informs clinical practice regarding anesthetic choices for high-risk surgical patients.
Guides future research directions in perioperative medicine and anesthesiology.
Aims to improve postoperative mortality and morbidity through evidence-based insights.