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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...

Endoscopic Procedures IV: Sigmoidoscopy and Laproscopy

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
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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: Clinical Application as Spinal Anesthesia

Local Anesthetics: Clinical Application as Spinal Anesthesia

Spinal anesthetics are given during lower abdomen and limb surgeries to block sensory and motor neurons. They are administered in the mid to low lumbar regions, primarily acting on the cauda equina's nerve roots. The blockade level depends on the local anesthetic (LA) concentration. Usually, low LA concentrations are sufficient to block sensory fibers, while only high LA concentrations block motor fibers. Other factors like injection volume and speed, the patient's posture, and the drug...

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.

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Cardiomyopathy VII: Pre and Post Operative Nursing Management

Patients with hypertrophic cardiomyopathy (HCM) and left ventricular outflow tract (LVOT) obstruction who remain symptomatic despite optimal medical therapy may undergo a septal myectomy (Morrow procedure). This procedure involves excising a portion of the hypertrophied septum below the aortic valve using a heart-lung machine to improve blood flow through the LVOT. Effective preoperative and postoperative nursing management ensures successful patient outcomes, minimizes complications, and...

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Related Experiment Video

Updated: May 31, 2026

Non-Intubated Video-Assisted Thoracoscopic Surgery

Non-Intubated Video-Assisted Thoracoscopic Surgery

Published on: May 26, 2023

[Anesthesia and bariatric surgery].

F M Konrad¹, K M Kramer, T H Schroeder

¹Klinik für Anaesthesiologie und Intensivmedizin, Universitätsklinik Tübingen, Tübingen, Germany.

Der Anaesthesist

|July 15, 2011

Summary

This summary is machine-generated.

Obesity is a global epidemic disease. Bariatric surgery can improve obesity-related comorbidities, but requires careful anesthetic evaluation due to altered drug pharmacokinetics and risks like aspiration and thromboembolism.

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Area of Science:

Anesthesiology
Metabolic Disease Research
Surgical Innovation

Context:

Obesity is recognized as an independent disease and a worldwide epidemic by the WHO.
Obesity-associated comorbidities impact all organ systems, necessitating specialized medical and surgical interventions.
Bariatric surgery offers significant improvements or remission for obesity-correlated comorbidities.

Purpose:

To highlight the critical considerations for anesthetic management in extremely obese patients undergoing bariatric surgery.
To emphasize the importance of preoperative evaluation of cardiac and pulmonary comorbidities.
To outline anesthetic techniques and postoperative care strategies for this high-risk patient population.

Summary:

Anesthetic evaluation must focus on pre-existing cardiac and lung impairments, such as cardiomyopathy and obstructive respiratory dysfunctions.
Airway management strategies include standard intubation, fiber optic awake intubation, or rapid sequence induction, depending on risk factors.
Altered drug pharmacokinetics and the high risk of postoperative thromboembolic complications necessitate early and sufficient thrombotic prophylaxis.

Impact:

Improved anesthetic protocols can reduce perioperative morbidity and mortality in extremely obese patients.
Enhanced understanding of pharmacokinetics in obesity optimizes drug selection and dosing.
Proactive management of thromboembolic risk significantly lowers postoperative complication rates and improves patient outcomes.