Apnea Measurement
Apnea Measurement - Related Videos
01:21
Sleep Apnea
0 Views •
2024
Sleep apnea is a condition where breathing stops intermittently during sleep, often leading to significant health issues. Each episode can last from 10 to 20 seconds or more and is frequently accompanied by a brief arousal from sleep. This disturbance, largely unnoticed by the individual, can lead to severe daytime fatigue. Commonly, individuals seek help after being informed by their partners about loud snoring and noticeable breathing pauses during sleep. The condition is more prevalent among...
07:54
Drug-Induced Sleep Endoscopy (DISE) with Target Controlled Infusion (TCI) and Bispectral Analysis in Obstructive Sleep Apnea
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Cited by 16 •
2016
The aim of this study was to establish a standardized protocol for sleep endoscopy to differentiate obstruction patterns in obstructive sleep apnea (OSA). Target-controlled infusion (TCI) of the sedative was combined with real-time monitoring of the depth of sedation using bispectral analysis.
07:52
Expired CO2 Measurement in Intubated or Spontaneously Breathing Patients from the Emergency Department
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Cited by 3 •
2011
This video describes how to perform CO2 measurement in intubated as well as spontaneously breathing patients. The main clinical indications refer to emergency situations: (1) verifying adequate positioning of an endotracheal tube; (2) achieving normocapnia in trauma patients; (3) monitoring ventilation in the case of procedural sedation.
10:25
Multi-system Monitoring for Identification of Seizures, Arrhythmias and Apnea in Conscious Restrained Rabbits
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Cited by 5 •
2021
Using simultaneous video-EEG-ECG-oximetry-capnography, we developed a methodology to evaluate the susceptibility of rabbit models to develop provoked arrhythmias and seizures. This novel recording system establishes a platform to test the efficacy and safety of therapeutics and can capture the complex cascade of multi-system events that culminate in sudden death.
07:22
Standardized Method for Measuring Collection Efficiency from Wipe-sampling of Trace Explosives
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Cited by 7 •
2017
Optimized sampling protocols and the development of new wipe materials can be facilitated by standardized measurements of collection efficiency from wipe-sampling. Our approach for sampling trace explosives uses an automated device to control speed, force, and distance during wipe-sampling followed by extraction of collected explosives.
FAQs
Classification depends on comparing airflow with respiratory effort. An obstructive event shows reduced or absent airflow while breathing effort continues, indicating a blocked airway. A central event combines reduced or absent airflow with decreased or stopped effort. This distinction separates a problem involving airway patency from one involving diminished respiratory drive, making the resulting respiratory profile more informative.
Airflow and effort describe the immediate respiratory event, whereas blood oxygen saturation indicates a physiological consequence of interrupted breathing. Additional breathing-related signals can add context to the timing and pattern of events. Examining these measures together helps researchers relate individual pauses to broader respiratory disruption rather than interpreting airflow changes in isolation.
Apnea indices convert detected respiratory events into quantitative measures that can be compared across assessments. Reliability matters because missed or misclassified pauses could obscure whether respiratory disruption is primarily obstructive or central. Consistent indices therefore support evaluation of respiratory disorders, comparison before and after treatment, and analysis of how interrupted breathing relates to neural regulation.
An assessment begins by recording airflow and respiratory effort, with oxygen saturation and other breathing-related signals added when relevant. Detected reductions or absences are then characterized according to accompanying effort, and the resulting events are summarized quantitatively. This workflow produces both event-level information and an overall apnea index for clinical assessment or neuroscience experiments.
In neuroscience, the method is useful when investigators need to connect breathing disruption with control systems in the nervous system. Measurements can characterize sleep-disordered breathing, examine brainstem regulation of respiration, and assess autonomic control. They also provide a way to study respiratory patterns alongside neural activity, helping frame pauses as physiological events with neural as well as airway relevance.
Treatment evaluation relies on comparing quantitative respiratory findings across assessments. Changes in the frequency or classification of detected events can indicate whether respiratory disruption has improved and whether obstructive or central patterns remain. Because the measurements also track oxygen saturation and related signals, follow-up can consider both event burden and associated physiological consequences.