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Related Concept Videos

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...
Physical Assessment of the Respiratory Tract II: Inspection01:27

Physical Assessment of the Respiratory Tract II: Inspection

Physical assessment of the respiratory tract through inspection is a crucial step in understanding the patient's respiratory health. It provides insights into the functioning of the respiratory system, the musculoskeletal structure, and even the patient's nutritional status. This comprehensive approach involves observing several vital aspects: chest configuration, breathing patterns, respiratory rates, skin color, and use of accessory muscles.
Chest Configuration
The chest configuration can...
Other Pulmonary Disorders01:17

Other Pulmonary Disorders

Respiratory disorders encompass a range of conditions with varying levels of severity. Asthma, marked by chronic airway inflammation and hypersensitivity, is one such condition. It can lead to airway obstruction due to factors like bronchial spasms, mucosal edema, increased mucus secretion, or epithelial damage. Asthma triggers are diverse, ranging from allergens to emotional upset, and treatment focuses on both immediate relief through bronchodilators and long-term inflammation suppression.
Respiratory Volumes and Capacities I01:26

Respiratory Volumes and Capacities I

Assessing the respiratory rate and rhythm for a complete minute is crucial for evaluating the breathing pattern. Even a minor increase in the patient's average respiratory rate, by as little as three to five breaths per minute, is an early and vital indicator of respiratory distress. Patients with a respiratory rate exceeding twenty-four breaths per minute require close monitoring to determine the physiological alterations. This careful observation is essential for prompt recognition and...
Decreased pulse rate01:14

Decreased pulse rate

Bradycardia is a medical condition in which the heart rate is slower than normal. It occurs when the heart's natural pacemaker, the sinus node, generates slower electrical impulses than the standard rhythm. In adults, bradycardia is diagnosed when the pulse rate falls below 60 beats per minute, indicating a deviation from the normal heart rate range.
There are specific risk factors that can elevate the likelihood of developing bradycardia. Advanced age is a significant factor, with bradycardia...
Anatomy of the Heart01:27

Anatomy of the Heart

The human heart is made up of three layers of tissue that are surrounded by the pericardium, a membrane that protects and confines the heart. The outermost layer, closest to the pericardium, is the epicardium. The pericardial cavity separates the pericardium from the epicardium. Beneath the epicardium is the myocardium, the middle layer, and the endocardium, the innermost layer. There are four chambers of the heart: the right atrium, the right ventricle, the left atrium, and the left ventricle.

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Related Experiment Video

Updated: May 8, 2026

A Model to Simulate Clinically Relevant Hypoxia in Humans
09:54

A Model to Simulate Clinically Relevant Hypoxia in Humans

Published on: December 22, 2016

Sleep apnoea and the heart.

Patrick Lévy1, Silke Ryan, Olaf Oldenburg

  • 1Univ. Grenoble Alpes, Hypoxia Physiopathology Laboratory, Grenoble, France. Patrick.levy@ujf-grenoble.fr

European Respiratory Review : an Official Journal of the European Respiratory Society
|September 3, 2013
PubMed
Summary

Sleep apnoea significantly impairs daily function and increases cardiovascular risks. While linked to heart issues, whether treating sleep apnoea reverses these chronic cardiovascular consequences requires further large-scale studies.

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

  • Cardiology
  • Sleep Medicine
  • Internal Medicine

Background:

  • Sleep apnoea is linked to impaired daytime function, cardiovascular diseases, and increased mortality.
  • Mechanisms include sympathetic activation, oxidative stress, and systemic inflammation.
  • Established associations exist between sleep apnoea and hypertension, arrhythmias, coronary heart disease, and heart failure.

Purpose of the Study:

  • To review the established associations between sleep apnoea and cardiovascular diseases.
  • To discuss the bidirectional relationship between heart failure and sleep apnoea.
  • To highlight the need for further research on the effects of sleep apnoea treatment on cardiovascular outcomes.

Main Methods:

  • Review of existing literature and experimental data.
  • Analysis of established associations in sleep apnoea patients.
  • Discussion of data from intermittent hypoxia studies.

Main Results:

  • Sleep apnoea is strongly associated with hypertension, arrhythmias, coronary heart disease, and heart failure.
  • Obstructive sleep apnoea is a risk factor for heart failure; central sleep apnoea is often a consequence of heart failure.
  • The reversal of chronic cardiovascular consequences by treating sleep apnoea is not fully established.

Conclusions:

  • Sleep apnoea poses significant cardiovascular risks.
  • The precise impact of treating sleep apnoea on heart failure morbidity and mortality requires confirmation through large randomized controlled trials.
  • Further research is essential to fully elucidate the benefits of sleep apnoea treatment for cardiovascular health.