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相关概念视频

Nociception01:44

Nociception

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Nociception—the ability to feel pain—is essential for an organism’s survival and overall well-being. Noxious stimuli such as piercing pain from a sharp object, heat from an open flame, or contact with corrosive chemicals are first detected by sensory receptors, called nociceptors, located on nerve endings. Nociceptors express ion channels that convert noxious stimuli into electrical signals. When these signals reach the brain via sensory neurons, they are perceived as pain.
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Local Anesthetics: Differential Sensitivity of Nerve Fibers01:24

Local Anesthetics: Differential Sensitivity of Nerve Fibers

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Local anesthetics (LAs) block the sodium channels of nerve trunks, sensory nerve endings, and neuromuscular junctions. Although LAs can block all kinds of nerves, the sensitivity of nerve fibers differs according to nerve types and structures. LAs are known to block myelinated fibers faster than unmyelinated ones. Also, they block pain or sensory neurons at low concentrations without affecting the motor neurons involved in muscle contractions. This helps relieve labor pain without affecting the...
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Mechanically-gated Ion Channels01:12

Mechanically-gated Ion Channels

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Mechanically-gated ion channels are proteins found in eukaryotic and prokaryotic cell membranes that open in response to mechanical stress. Tension, compression, swelling, and shear stress can alter the conformation of the protein, opening a transmembrane channel that allows the passage of ions for signal transmission. In eukaryotes, mechanically-gated channels are distributed in several regions like the neurons, lungs, skin, bladder, and heart, where they play critical roles in numerous...
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Pulse amplitude and quality01:17

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Pulse amplitude is a crucial indicator of cardiac health because it provides valuable insights into the strength of left ventricular contractions and the overall uniformity of blood circulation within the vasculature. The strength of the pulse is directly related to the force with which the heart contracts and the volume of blood being pumped.
A weak or absent pulse may indicate reduced cardiac output or poor left ventricular contraction, which can be signs of cardiovascular dysfunction or...
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Sound Intensity Level00:53

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Humans perceive sound by hearing. The human ear helps sound waves reach the brain, which then interprets the waves and creates the perception of hearing. The loudness of the environment in which a person is located determines whether they can distinguish between different sound sources.
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Sensory Functions of the Skin01:16

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The skin is the largest organ of the human body and plays a crucial role in our sensory perception. It contains a vast network of sensory receptors that contribute to the skin's protective function by perceiving physical, biological, and environmental cues and generating relevant responses.
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Updated: Jan 12, 2026

Objective Nociceptive Assessment in Ventilated ICU Patients: A Feasibility Study Using Pupillometry and the Nociceptive Flexion Reflex
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发觉水平指数是对起器刺激的反应.

Cosmin Balan1, Robert-Thomas Barbulescu2, Andrei Dumitrache2

  • 11 st Department of Cardiovascular Anesthesia and Intensive Care Medicine, Prof. Dr. C.C. Iliescu Institute for Emergency Cardiovascular Diseases, Bucharest, Romania. cosmin13mara@yahoo.com.

Journal of clinical monitoring and computing
|November 3, 2025
PubMed
概括
此摘要是机器生成的。

感知水平 (NOL) 指数受到心脏起器干扰的影响. 将PMD-200TM监视器重新校准到节奏心率,可以准确地反映起节拍器刺激期间的感觉-反感觉平衡.

关键词:
心脏外科手术是什么心脏手术没有感知水平指数指数.没有感觉-反感觉平衡平衡.起器是一种心脏起器.

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相关实验视频

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Objective Nociceptive Assessment in Ventilated ICU Patients: A Feasibility Study Using Pupillometry and the Nociceptive Flexion Reflex
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科学领域:

  • 麻醉学 麻醉学
  • 心血管麻醉心血管麻醉
  • 在手术内监测.

背景情况:

  • 诺西塞普水平 (NOL) 指数是从光电感应学中获得的,它评估了手术期间的诺西塞普-抗诺西塞普平衡.
  • 心脏起器干扰可能会影响NOL指数的准确性,因为它依赖于光电脉学.

研究的目的:

  • 为了评估NOL指数对心脏起器刺激的反应,在没有 nociceptive输入的情况下.
  • 为了确定PMD-200TM监视器的重新校准是否可以减轻与NOL指数读数的节拍器干扰.

主要方法:

  • 研究了接受选择性心脏手术和接受机械呼吸的成年人.
  • 在连续关闭起器期间记录了NOL指数,双光谱指数,平均动脉压和心率,节奏为90和110次/分钟,再进行重新校准.
  • 用混合模型重复测量方法分析数据,并将双光谱指数作为共变量.

主要成果:

  • 随着时间的推移,心脏起器刺激显著影响了NOL指数值 (p < 0.001).
  • NOL指数从基线 (2.1) 增加到90bpm的8.4和110bpm的18.4.
  • 将PMD-200TM监控器重新校准到步调速率 (110 bpm) 将NOL指数恢复到基线水平 (1.1),保持稳定.

结论:

  • NOL指数受到心脏起器刺激的显著影响.
  • 将PMD-200TM监视器重新校准到节奏心率,可以在使用心脏起器时准确评估 nociception-antinociception平衡.
  • 这一发现对于带有心脏起器的患者进行可靠的手术内监测至关重要.