Related Experiment Video
Updated: Mar 11, 2026
08:49
Assessing Changes in Volatile General Anesthetic Sensitivity of Mice after Local or Systemic Pharmacological Intervention
Published on: October 16, 2013
14.6K
Influence of general anaesthesia on the brainstem
L Bosch1, J Fernández-Candil1, A León2
1Servicio de Anestesiología y Reanimación, Parc de Salut Mar (PSM), Barcelona, España.
Revista Espanola De Anestesiologia Y Reanimacion
|November 27, 2016
Summary
General anesthesia affects brainstem functions, impacting vital body controls like breathing and heart rate. Anesthesiologists must understand these interactions for patient safety and homeostasis.
Area of Science:
- Neuroscience
- Anesthesiology
Background:
- The brainstem's role in controlling essential body functions under general anesthesia is not fully understood.
- Anesthesiologists need awareness of anesthetic drug interactions with brainstem function for maintaining homeostasis.
Purpose of the Study:
- To provide clinicians with a comprehensive overview of how anesthetic states affect brainstem functions and homeostatic changes.
- To review the influence of anesthetic drugs on brainstem function.
Main Methods:
- Clinical exploration of cranial nerves and reflexes.
- Analysis of electroencephalographic (EEG) changes and other electric brain activity.
- Review of neuroimaging techniques, particularly functional magnetic resonance imaging (fMRI).
Main Results:
- General anesthesia alters key brainstem-controlled functions including consciousness, protective reflexes, respiration, heart rate, temperature, and blood pressure.
- Understanding these effects is crucial for safe anesthetic practice.
Conclusions:
- The brainstem plays a critical role in mediating the homeostatic effects of general anesthesia.
- Integrating clinical, electrophysiological, and neuroimaging data enhances our understanding of brainstem function during anesthesia.
Keywords:
AnaesthesiaAnestesiaBrainstemCranial nervesExploración neurológicaFunciones vitalesNeurological examinationPares cranealesPropofolReflejoReflexTronco encefálicoVital functionsMore Related Videos
14:52Recording Brain Electromagnetic Activity During the Administration of the Gaseous Anesthetic Agents Xenon and Nitrous Oxide in Healthy Volunteers
Published on: January 13, 2018
11.6K
08:16Optogenetic Activation of Afferent Pathways in Brain Slices and Modulation of Responses by Volatile Anesthetics
Published on: July 23, 2020
2.7K
Related Concept Videos
01:24General Anesthesia: Overview
919
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...
General anesthesia induces unconsciousness in the whole body, while the others target specific areas or sensations. It is administered to minimize adverse effects, maintain...
919
01:22Stages of General Anesthesia
2.1K
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...
2.1K
01:24Parenteral Anesthetics: Overview
851
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.
851
01:20Inhalational Anesthetics: Overview
1.4K
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...
1.4K
01:11Local Anesthetics: Clinical Application as Spinal Anesthesia
1.7K
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...
1.7K
01:21Brainstem: Control Centers of Medulla
5.1K
The medulla oblongata is a crucial part of the brainstem responsible for controlling various autonomic and involuntary functions. It contains several nuclei, including the olivary, cuneate, gracile, and solitary nuclei.
Olivary Nucleus
The olivary nucleus, or inferior olivary nucleus, is located within the ventrolateral part of the medulla oblongata. It is primarily involved in motor coordination and motor learning. The olivary nucleus receives input from the spinal cord, cerebellum, and motor...
Olivary Nucleus
The olivary nucleus, or inferior olivary nucleus, is located within the ventrolateral part of the medulla oblongata. It is primarily involved in motor coordination and motor learning. The olivary nucleus receives input from the spinal cord, cerebellum, and motor...
5.1K