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Related Concept Videos

Pulse01:16

Pulse

2.2K
When the heart pumps blood out, arterial elastic fibers play a crucial role in sustaining a high-pressure gradient. They expand to accommodate the received blood and then recoil - a process known as the pulse that can be either manually palpated or electronically quantified. Despite a reduction in its effect with increased distance from the heart, elements of the pulse's systolic and diastolic components persist, observable even at the arteriole level.
The pulse serves as a clinical...
2.2K
Pulse01:05

Pulse

4.2K
The pulse is one of the most fundamental physiological indicators of the body's cardiovascular health. It is the rhythmic expansion and contraction of the arterial walls in response to the pressure generated by the heart's pumping action.
Pulse Rate and its Significance
Pulse rate, often measured in beats per minute (bpm), reflects the heart rate (HR), which is influenced by numerous factors such as stress, physical activity, and hormonal changes. A normal resting adult pulse rate falls...
4.2K
NMR Spectrometers: Radiofrequency Pulses and Pulse Sequences01:17

NMR Spectrometers: Radiofrequency Pulses and Pulse Sequences

1.8K
A pulse is a short burst of radio waves distributed over a range of frequencies that simultaneously excites all the nuclei in the sample. Upon passing a radio frequency pulse along the x-axis, the nuclei absorb energy corresponding to their Larmor frequencies and achieve resonance. This shifts the net magnetization vector from the z-axis toward the transverse plane. This angle of rotation of the magnetization vector, or the flip angle, is proportional to the duration and intensity of the pulse.
1.8K
Pulse Oximetry01:24

Pulse Oximetry

1.4K
Pulse oximetry, or SpO2, is a non-invasive method for continuously monitoring arterial oxygen saturation (SaO2). This procedure involves attaching a probe or sensor to the patient's fingertip, forehead, earlobe, or nose bridge. The sensor works by detecting changes in oxygen saturation levels through light signals generated by the oximeter and reflected by the pulsing blood under the probe.
Purpose
Average SpO2 values are greater than 95%. If the readings fall below 90%, it indicates that...
1.4K
Regulation of Pulse01:20

Regulation of Pulse

2.3K
Pulse regulation involves physiological mechanisms that ensure adequate blood flow throughout the body. The heartbeat, regulated by the autonomic nervous system, is influenced by hormonal balance, physical activity, and emotional state.
2.3K
Pulse rhythm01:30

Pulse rhythm

1.4K
Pulse rhythm refers to the pattern of pulsations within specific intervals, offering valuable insights into the regularity or irregularity of the heart's beats as observed through the pattern of pulsation within specific intervals. A regular pulse exhibits a consistent heart rate with uniform waveforms and pulsation force, variations of which can be classified as normal, weak, or bounding.
Conversely, an irregular pulse pattern is termed dysrhythmia, stemming from disruptions in cardiac...
1.4K

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Related Experiment Video

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Dynamic Navigation for Dental Implant Placement
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Optical surgical navigation system causes pulse oximeter malfunction.

Masaaki Satoh1, Tetsuhito Hara1, Kenji Tamai1

  • 1Department of Anesthesiology and Critical Care Medicine, Jichi Medical University, Yakushiji, Shimotsuke-City, Tochigi 329-0498 Japan.

JA Clinical Reports
|March 3, 2018
PubMed
Summary

Optical navigation systems can interfere with pulse oximetry, causing inaccurate readings during surgery. This case report highlights potential pulse jamming and discusses management strategies for this interference.

Keywords:
Anesthetic managementLaserNeuronavigatorSaw-tooth wavesTracking technology

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Area of Science:

  • Surgical Technology
  • Anesthesiology
  • Biomedical Engineering

Background:

  • Optical surgical navigation systems aid surgical approaches.
  • Pulse oximeters are crucial for anesthetic management.
  • Interference between surgical navigation and patient monitoring is a concern.

Purpose of the Study:

  • To report the first observed interference between an optical surgical navigation system and pulse oximetry.
  • To describe the specific issues encountered, including saw-tooth waves and inaccurate saturation readings.
  • To discuss the potential causes and management of this interference.

Main Methods:

  • Observation of pulse oximeter waveform and saturation data during activation of an optical surgical navigation system.
  • Analysis of the observed interference patterns (saw-tooth waves).
  • Case study approach to document the event and its characteristics.

Main Results:

  • Activation of the optical navigation system led to saw-tooth waves on the pulse oximeter.
  • The pulse oximeter was unable to accurately record percutaneous arterial saturation during system use.
  • This represents the first reported instance of optical navigation system interference with pulse oximetry.

Conclusions:

  • Optical surgical navigation systems can interfere with pulse oximetry, impacting patient monitoring.
  • Understanding and managing this interference is critical for safe surgical procedures.
  • Further investigation into the mechanisms of pulse jamming and mitigation strategies is warranted.