Related Experiment Video
Updated: Jun 12, 2026

Recording Brain Electromagnetic Activity During the Administration of the Gaseous Anesthetic Agents Xenon and Nitrous Oxide in Healthy Volunteers
Published on: January 13, 2018
Anesthesia for patients with neurologic disease.
1Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Washington State University, Pullman, WA 99164-6610, USA. sag@vetmed.wsu.edu
Anesthesia can alter cerebral blood flow, impacting patients with intracranial disease. Understanding factors like blood pressure, carbon dioxide, oxygen levels, and anesthetic types is crucial for safe patient management.
Area of Science:
- Neuroscience
- Anesthesiology
- Physiology
Background:
- Cerebral blood flow (CBF) regulation is vital, especially in patients with intracranial disease.
- CBF is autoregulated within a mean arterial pressure range of 50-150 mm Hg.
- Intracranial pressure (ICP) correlates with cerebral blood volume (CBV).
Purpose of the Study:
- To review factors affecting cerebral blood flow during anesthesia.
- To highlight potential risks for patients with intracranial disease.
Main Methods:
- Literature review of physiological regulation of cerebral blood flow.
- Analysis of the effects of anesthetic agents on cerebral hemodynamics.
- Examination of chemical regulation of CBF (PaCO2, PaO2).
Main Results:
- Cerebral blood flow autoregulation is maintained between 50-150 mm Hg mean arterial pressure.
- Chemical regulation: CBF increases with elevated arterial carbon dioxide (25-70 mm Hg) and reduced arterial oxygen (<60 mm Hg).
- Anesthetics impact CBF: Injectables (except ketamine) preserve CBF; inhalants may cause vasodilation, increasing CBF and ICP, though controlled ventilation mitigates this.
Conclusions:
- Anesthetic management requires careful consideration of factors influencing cerebral blood flow.
- Maintaining optimal arterial carbon dioxide and oxygen levels is critical.
- Understanding the differential effects of anesthetic agents on CBF and ICP is essential for neuroanesthesia.
Related Concept Videos
General Anesthesia: Overview
General anesthesia induces unconsciousness in the whole body, while the others target specific areas or sensations. It is administered to minimize adverse effects, maintain...
Stages of General Anesthesia
Local Anesthetics: Clinical Application as Spinal Anesthesia
Parenteral Anesthetics: Overview
Local Anesthetics: Adverse Effects
Once absorbed into the systemic circulation, local anesthetics can affect the organs that depend on the functioning of sodium...
Local Anesthetics: Clinical Application as Epidural Anesthesia
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...

