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Related Concept Videos

Stages of General Anesthesia01:22

Stages of General Anesthesia

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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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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.
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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.
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Parenteral Anesthetics: Overview01:24

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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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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...
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Related Experiment Video

Updated: Mar 21, 2026

Photoselective Vaporesection of the Prostate via an End-firing Lithium Triborate Crystal Laser
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Deep sedation in GreenLight laser prostatectomy.

Fotini Fligou1, Panagiotis Kallidonis2, Nicolaos Flaris1

  • 1Department of Anesthesiology, University of Patras, Greece.

Urology Annals
|May 4, 2016
PubMed
Summary

The combination of ketamine and propofol provides effective anesthesia for photoselective vaporization of the prostate (PVP). This method is safe for patients with co-morbidities, offering deep sedation with manageable side effects.

Keywords:
Ketamineketofollaser prostatectomyphotoselective vaporizationpropofolprostatesedation

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Area of Science:

  • Anesthesiology
  • Urology
  • Pharmacology

Background:

  • Photoselective vaporization of the prostate (PVP) is a common procedure for benign prostatic hyperplasia.
  • Anesthesia selection is crucial for patient safety and procedural success, especially in those with co-morbidities.

Purpose of the Study:

  • To evaluate the efficacy and safety of combined ketamine and propofol anesthesia for PVP.
  • To assess peri-operative parameters and side effects associated with this anesthetic combination.

Main Methods:

  • Twenty-six patients with benign prostatic hyperplasia undergoing PVP were studied.
  • Anesthesia was induced with midazolam, followed by a continuous infusion of propofol and ketamine.
  • Sedation levels, vital signs, and adverse events were monitored throughout the procedure.

Main Results:

  • The combined ketamine-propofol anesthesia allowed for efficient PVP procedures, with average infusion times of approximately 60 minutes.
  • Most patients achieved deep sedation without significant hemodynamic instability.
  • Common side effects included nausea (10 patients) and hallucinations (5 patients).

Conclusions:

  • Combined ketamine and propofol is an effective anesthetic technique for PVP.
  • The method is well-tolerated, even in patients with significant co-morbidities.
  • This anesthetic approach offers a safe and efficient option for PVP procedures.