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Related Concept Videos

Anatomical Positions01:11

Anatomical Positions

In anatomy, several standard anatomical positions are used as references for describing the position and orientation of different body parts. These positions help provide a common frame of reference when discussing anatomical structures. The anatomical position is the standard reference point for describing the body's position and orientation. In this position:
The body is upright, facing forward, and standing erect.
The feet are parallel and flat on the floor.
The arms are hanging by the...
Sleep Apnea01:21

Sleep Apnea

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...
Acute Respiratory Failure-IV01:23

Acute Respiratory Failure-IV

Respiratory failure can manifest suddenly or gradually, characterized by a rapid decline in PaO2 and a rapid rise in PaCO2. This situation indicates a severe respiratory problem that may quickly become a life-threatening emergency. One of the early signs of hypoxemic Acute Respiratory Failure (ARF) is a change in mental status due to the brain's sensitivity to oxygen levels and changes in acid-base balance. Symptoms such as restlessness, confusion, and agitation suggest inadequate oxygen...
Cardiopulmonary Resuscitation II: ACLS Airway Management01:22

Cardiopulmonary Resuscitation II: ACLS Airway Management

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 under...
Response Surface Methodology01:16

Response Surface Methodology

Response Surface Methodology (RSM) is a collection of statistical and mathematical techniques used to develop, improve, and optimize processes. It is particularly valuable when many input variables or factors potentially influence a response variable.
The process of RSM involves several key steps:
Alterations in Respiration II01:30

Alterations in Respiration II

There are numerous types of normal and abnormal respiration. Based on ventilatory movements, breathing patterns are classified as regular, deep, or shallow. Examples include Biot's breathing, Cheyne-Stokes respiration, Kussmaul's breathing, hyperventilation, and hypoventilation. Each pattern is clinically significant and aids in evaluating patients.
In Biot's breathing, the respiratory rate and depth are irregular, alternating between periods of deep gasping and apnea. Common causes include...

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Related Experiment Video

Updated: Jun 25, 2026

Drug-Induced Sleep Endoscopy (DISE) with Target Controlled Infusion (TCI) and Bispectral Analysis in Obstructive Sleep Apnea
07:54

Drug-Induced Sleep Endoscopy (DISE) with Target Controlled Infusion (TCI) and Bispectral Analysis in Obstructive Sleep Apnea

Published on: December 6, 2016

Determining optimal sleep position in patients with positional sleep-disordered breathing using response surface

Jung Bok Lee1, Young Hwan Park, Jung Hwa Hong

  • 1Institute of Human Genomic Study, College of Medicine, Korea University, Ansan, Gyeonggi-Do, Korea.

Journal of Sleep Research
|March 3, 2009
PubMed
Summary

Sleeping in a lateral position (LP) significantly reduces snoring and apnea in mild to moderate sleep apnea patients. Optimal results require considering head, shoulder, and neck support alongside the degree of lateral rotation.

Related Experiment Videos

Last Updated: Jun 25, 2026

Drug-Induced Sleep Endoscopy (DISE) with Target Controlled Infusion (TCI) and Bispectral Analysis in Obstructive Sleep Apnea
07:54

Drug-Induced Sleep Endoscopy (DISE) with Target Controlled Infusion (TCI) and Bispectral Analysis in Obstructive Sleep Apnea

Published on: December 6, 2016

Area of Science:

  • Sleep Medicine
  • Respiratory Physiology
  • Biomedical Engineering

Background:

  • Positional therapy is effective for mild to moderate sleep apnea.
  • The impact of specific head and shoulder postures in the lateral position on sleep disorder reduction remains under-investigated.

Purpose of the Study:

  • To evaluate effective sleeping positions and their determinants for reducing snoring and apnea.
  • To identify optimal sleep postures combining lateral position, cervical vertebrae support with head tilting (CVS-HT), and scapula support (SS).

Main Methods:

  • Response surface analysis (RSA) using a central composite design.
  • Polysomnography evaluation over two nights for 16 patients with mild/moderate positional sleep apnea and snoring.
  • Assessment of lateral position (LP), CVS-HT, and SS effects on snoring and apnea-hypopnea index (AHI).

Main Results:

  • Lateral position (LP) with at least 30 degrees rotation showed the most significant effect on reducing snoring rate (P=0.0057) and AHI (P=0.0319).
  • Interactions were found between LP and CVS-HT for snoring rate (P=0.0423), and between LP, CVS-HT, and SS for AHI (P=0.0310, P=0.0265).
  • Optimal positions reduced mild snoring by over 80% and AHI by at least 80% with specific rotation and support parameters.

Conclusions:

  • Lateral position (LP) is a dominant factor in reducing sleep apnea and snoring.
  • Concurrent consideration of cervical vertebrae support with head tilting (CVS-HT) and scapula support (SS) is crucial for determining effective sleep positions.
  • These findings offer guidance for optimizing positional therapy in patients with positional sleep apnea or snoring.