Related Experiment Video
Updated: Jul 14, 2026
05:45
Experimental Approach to Examine Leptin Signaling in the Carotid Bodies and its Effects on Control of Breathing
Published on: October 25, 2019
Sleep-related hypoventilation/hypoxemic syndromes
Kenneth R Casey1, Kathia Ortiz Cantillo, Lee K Brown
1Division of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine, University of New Mexico School of Medicine, 1101 Medical Arts Ave NE, Building 2, Albuquerque, NM 87102, USA.
Chest
|June 15, 2007
Summary
Sleep-related hypoventilation syndromes involve abnormal gas exchange during sleep, affecting individuals with respiratory, neurologic, or neuromuscular conditions. Treatment often includes nocturnal ventilatory support, commonly noninvasive positive pressure ventilation.
Area of Science:
- Sleep Medicine
- Respiratory Medicine
- Neurology
Background:
- Sleep-related hypoventilation/hypoxemic syndromes are classified under the International Classification of Sleep Disorders.
- These syndromes encompass a spectrum from common conditions like COPD with nocturnal gas exchange issues to rare disorders like congenital central hypoventilation syndrome.
- Abnormal gas exchange worsening or occurring exclusively during sleep characterizes these conditions.
Purpose of the Study:
- To review the classification and characteristics of sleep-related hypoventilation/hypoxemic syndromes.
- To highlight the impact of sleep state, posture, and circadian rhythms on respiration.
- To discuss the interaction of sleep-related respiratory changes with underlying diseases.
Main Methods:
- Review of the latest edition of The International Classification of Sleep Disorders: Diagnostic and Coding Manual.
- Analysis of the pathophysiology linking sleep, breathing control, and pulmonary mechanics.
- Examination of treatment strategies for these syndromes.
Main Results:
- Sleep state, posture, and circadian rhythms can significantly alter breathing control and pulmonary mechanics.
- These alterations can exacerbate underlying respiratory, neurologic, or neuromuscular diseases, leading to hypoventilation/hypoxemia during sleep.
- Nocturnal ventilatory support, particularly noninvasive positive pressure ventilation, is a common treatment.
Conclusions:
- Sleep-related hypoventilation/hypoxemic syndromes are a diverse group of disorders unified by sleep-disordered breathing.
- Understanding the interplay between sleep physiology and disease is crucial for diagnosis and management.
- Noninvasive positive pressure ventilation is a primary therapeutic intervention for many of these conditions.
Related Concept Videos
01:21Acute Respiratory Failure-II
Type I Respiratory Failure, or hypoxemic respiratory failure, occurs when the partial pressure of oxygen (PaO2) in arterial blood falls below 60 mmHg while breathing room air without a corresponding increase in arterial carbon dioxide levels (PaCO2). This condition highlights a significant impairment in the lungs' capacity to oxygenate the blood.
The underlying physiological abnormalities that contribute to hypoxemic respiratory failure include:
The underlying physiological abnormalities that contribute to hypoxemic respiratory failure include:
01:25Hyperpnea and Hyperventilation
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...
01:30Alterations 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...
In Biot's breathing, the respiratory rate and depth are irregular, alternating between periods of deep gasping and apnea. Common causes include...
01:23Hypoxia
Hypoxia is a medical condition characterized by an inadequate oxygen supply to body tissues. It typically manifests as a bluish discoloration of the skin and mucosae, especially in fair-skinned individuals, when hemoglobin (Hb) saturation drops below 75%.
Types of Hypoxia
There are four primary types of hypoxia, each resulting from a different cause:
1. Anemic hypoxia: This type occurs due to insufficient oxygen delivery caused by a lack of red blood cells (RBCs) or RBCs with abnormal or...
Types of Hypoxia
There are four primary types of hypoxia, each resulting from a different cause:
1. Anemic hypoxia: This type occurs due to insufficient oxygen delivery caused by a lack of red blood cells (RBCs) or RBCs with abnormal or...
01:23Acute 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...
01:23Physiological Control of Respiration
Introduction
Breathing, a seemingly passive process, is regulated by the respiratory center in the brainstem. This center coordinates the involuntary control of respirations, which means it occurs without conscious effort, ensuring a smooth and uninterrupted pattern.
Regulation of Ventilation
The body maintains ventilation by monitoring levels of carbon dioxide (CO2), oxygen (O2), and hydrogen ion concentration (pH) in the arterial blood. Among these factors, the level of CO2 plays a crucial...
Breathing, a seemingly passive process, is regulated by the respiratory center in the brainstem. This center coordinates the involuntary control of respirations, which means it occurs without conscious effort, ensuring a smooth and uninterrupted pattern.
Regulation of Ventilation
The body maintains ventilation by monitoring levels of carbon dioxide (CO2), oxygen (O2), and hydrogen ion concentration (pH) in the arterial blood. Among these factors, the level of CO2 plays a crucial...