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Related Concept Videos

Sleep Apnea01:21

Sleep Apnea

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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.
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Suctioning the Oropharyngeal Airway01:25

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In preparing for oropharyngeal airway suctioning, a nurse must gather all necessary equipment, including a suction unit with tubing, a prepackaged suction kit, sterile gloves, water or saline for irrigation, a water-soluble lubricant, and additional personal protective equipment (such as a gown, mask, and goggles) to control infections.
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Suctioning the Nasopharyngeal Airway01:29

Suctioning the Nasopharyngeal Airway

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Nasopharyngeal suctioning is a procedure to remove secretions from the upper part of the respiratory tract that the patient cannot clear independently. It helps maintain airway patency and prevents complications such as aspiration pneumonia.
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Cardiopulmonary Resuscitation II: ACLS Airway Management01:22

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Airway management is a key skill in emergency and critical care settings, as maintaining a clear airway is essential for adequate oxygenation and ventilation.Head Tilt-Chin Lift TechniqueThe head tilt-chin lift maneuver is an essential technique primarily used in patients without suspected cervical spine injuries. To perform this maneuver, one hand is placed on the patient’s forehead, and gentle pressure is applied backward to tilt the head. The fingertips of the other hand are positioned...
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Cardiopulmonary Resuscitation V: Advanced Airway Management Techniques01:30

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Airway management is essential in emergency and surgical medicine, ensuring ventilation and oxygenation in patients who cannot maintain their own airway. Clinicians use a range of techniques and devices to secure the airway, depending on the patient’s condition and the clinical context. Key methods include endotracheal intubation, rapid sequence intubation (RSI), supraglottic airway devices, and advanced visualization aids. In cases where these approaches fail, surgical airway...
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Hyperventilation refers to a higher-than-normal rate and depth of breathing, often associated with anxiety attacks. This excessive breathing surpasses the body's need to expel CO2, leading to a condition known as hypocapnia - an unusually low level of carbon dioxide in the blood. Hypocapnia can constrict cerebral blood vessels, reducing blood flow to the brain, which may result in dizziness or fainting. Early signs include tingling and muscle spasms in the hands and face, caused by falling...
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Related Experiment Video

Updated: Aug 6, 2025

Drug-Induced Sleep Endoscopy DISE with Target Controlled Infusion TCI and Bispectral Analysis in Obstructive Sleep Apnea
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Objective Pharyngeal Phenotyping in Obstructive Sleep Apnea With High-Resolution Manometry.

David T Kent1, William C Scott2, Cheng Ye3

  • 1Department of Otolaryngology-Head & Neck Surgery, Vanderbilt University Medical Center, Nashville, Tennessee, USA.

Otolaryngology--Head and Neck Surgery : Official Journal of American Academy of Otolaryngology-Head and Neck Surgery
|March 20, 2023
PubMed
Summary

High-resolution pharyngeal manometry (HRM) shows promise for objectively assessing upper airway collapse in obstructive sleep apnea (OSA). This new method could offer a reliable alternative to drug-induced sleep endoscopy (DISE) for surgical planning.

Keywords:
drug-induced sleep endoscopyhigh-resolution manometryobstructive sleep apneasleep surgery

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Area of Science:

  • Sleep Medicine
  • Medical Engineering
  • Otolaryngology

Background:

  • Obstructive sleep apnea (OSA) diagnosis often relies on drug-induced sleep endoscopy (DISE).
  • DISE is costly, subjective, and requires sedation.
  • Objective, dynamic upper airway phenotyping is needed for OSA surgical selection.

Purpose of the Study:

  • To investigate high-resolution pharyngeal manometry (HRM) for upper airway phenotyping in OSA.
  • To develop a software system using HRM to predict pharyngeal collapse sites.
  • To compare HRM-based predictions with DISE findings.

Main Methods:

  • Prospective cross-sectional study involving 40 participants.
  • Simultaneous HRM and DISE recordings were obtained.
  • A machine learning algorithm was developed to predict collapse severity from HRM data, validated against expert DISE review.

Main Results:

  • The machine learning model achieved high performance during training (average F1-score 0.86, accuracy 0.91).
  • A K-nearest neighbor model on a holdout set demonstrated excellent accuracy (F1-score 0.96, accuracy 0.97).
  • Prediction of complete concentric palatal collapse yielded an F1-score of 0.86.

Conclusions:

  • HRM shows potential for objective and dynamic pharyngeal mapping in OSA.
  • This technique may provide a reliable and reproducible method for assessing upper airway anatomy.
  • HRM could offer a new diagnostic pathway for OSA patients requiring surgical intervention.